Android: app crashing after launch activity [duplicate]

Android: app crashing after launch activity [duplicate] - java

This question already has answers here:
Why does my Android app crash with a NullPointerException when initializing a variable with findViewById(R.id.******) at the beginning of the class?
(9 answers)
Closed 6 years ago.
I have this app but for some reason I can't get it to work past the launch screen. After a user clicks an item on the listview it generates a random int in the activity and based on that changes the textView. If the user's input matches the right .contains strings it'll print out a toast.
Here is the launch activity:
package com.eoincoogan.owner.omegaphi;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class LaunchActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_launch);
ListView lv = (ListView) findViewById(R.id.subjectListView);
String[] subjectArray = new String[]{"Physics","Chemistry","Economics", "Geography"};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, subjectArray);
lv.setAdapter(adapter);
lv.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (position == 0) {
Intent intent = new Intent(LaunchActivity.this, PhysicsFragment.class);
startActivity(intent);
} else if (position == 1) {
Intent intent = new Intent(LaunchActivity.this, ChemFragment.class);
startActivity(intent);
} else if (position == 2) {
Intent intent = new Intent(LaunchActivity.this, EconFragment.class);
startActivity(intent);
} else if (position == 3) {
Intent intent = new Intent(LaunchActivity.this, GeoActivity.class);
startActivity(intent);
}
}
}
);
}
}
Here is the activity after the LaunchActivity:
package com.eoincoogan.owner.omegaphi;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Random;
public class PhysicsFragment extends AppCompatActivity {
private TextView definitionTextView = (TextView) findViewById(R.id.definitonTextView);
String definitionText = definitionTextView.getText().toString();
private EditText userInputText = (EditText) findViewById(R.id.userInputText);
String userInput = userInputText.getText().toString();
Random rand = new Random();
int value = rand.nextInt(3);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_physics_fragment);
Button button = (Button)findViewById(R.id.button);
Button buttonTwo = (Button)findViewById(R.id.button2);
final Toast firstToast = Toast.makeText(this, "Correct", Toast.LENGTH_LONG);
final Toast secondToast = Toast.makeText(this, "Correct", Toast.LENGTH_LONG);
button.setOnClickListener(
new Button.OnClickListener() {
public void onClick(View v) {
switch (value) {
case 0:
definitionText = "Diode";
if (userInput.contains("Current" + "one way" + "allows")) {
firstToast.show();
} else {
secondToast.show();
}
case 1:
definitionText = "First law of refraction";
if (userInput.contains("insidence" + "normal" + "refracted" + "ray")) {
firstToast.show();
} else {
secondToast.show();
}
case 2:
definitionText = "Second law of refraction";
if (userInput.contains("angle" + "incidence" + "reflection" + "equal")) {
firstToast.show();
} else {
secondToast.show();
}
}
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
);
//button to launch screen//
buttonTwo.setOnClickListener(
new Button.OnClickListener(){
#Override
public void onClick(View v) {
Intent myIntent = new Intent(PhysicsFragment.this, LaunchActivity.class);
startActivity(myIntent);
}
}
);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_driver, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Any help would be much appreciated.

add LaunchActivity to Manifest file
<activity android:name=".LaunchActivity"></activity>
java file,
Intent myIntent = new Intent(context, LaunchActivity.class);
startActivity(myIntent);

Related

How to save the data a user inputs into the device's local internal storage?

I'm developing a Grade/GPA Calculator app on Android during my free time. What the app basically does until now is let the user add Semesters in the Main Activity and when the user clicks on a certain Semester the user is redirected to another Activity where the user can add new Courses for that specific semester. The problem I'm having is that when the user hits on the back button to go to to the Main Activity where the Semesters are located the courses that were added in that semester are erased. The same happens when I go to the phone's homepage and re-launch the app, everything that the user had created has been deleted.
I'm pretty sure my problem is that I'm not saving the data that the user creates to the phone's storage/app's storage, but I can't seem to figure out on how to do this. If anyone can point me in the right direction I would appreciate it. Thanks!
This is my MainActivity class's code: (My MainActivity is where Semesters are added)
package com.example.gradecalculator;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import java.util.ArrayList;
import java.util.Random;
public class MainActivity extends AppCompatActivity {
// Private Fields
private Dialog d;
private EditText semesterName;
private ListView semesterListView;
private ArrayList<String> semesterArray = new ArrayList<String>();
private SemesterAdapter customSemesterAdapter;
private ArrayList<Semester> mySemesters = new ArrayList<>();
private ArrayList<String> semesterBackgrounds = new ArrayList<String>();
private String getSemesterName;
private int randomBackground[] = new int[7];
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initiating toolbar
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Making a new dialog
d = new Dialog(this);
// Initializing variables
semesterName = (EditText) d.findViewById(R.id.editTextSemesterName);
semesterListView = (ListView) findViewById(R.id.semesterList);
// Calling the removeSemesters() method
removeSemesters();
// Adding backgrounds to the backgrounds ArrayList
semesterBackgrounds.add("orange_background");
semesterBackgrounds.add("green_background");
semesterBackgrounds.add("aqua_background");
semesterBackgrounds.add("blue_background");
semesterBackgrounds.add("pink_background");
semesterBackgrounds.add("purple_background");
semesterBackgrounds.add("red_background");
semesterBackgrounds.add("yellow_background");
}
// Creating a custom Menu
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.top_menu, menu);
return true;
}
// Buttons in the custom Menu
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.editButton:
Toast.makeText(this, "Delete the desired Semesters by clicking on the trash button located to the right of each Semester", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
// When user clicks on "+New Semester" button open a popup where the user is prompted to
// type in the Semester Name and when "Done" is clicked the new semester appears in the Main
// Activity
public void newSemesterPopup(View v) {
TextView closePopup;
ImageButton doneButton;
d.setContentView(R.layout.new_semester_popup);
semesterName = (EditText) d.findViewById(R.id.editTextSemesterName);
semesterListView = (ListView) findViewById(R.id.semesterList);
doneButton = (ImageButton) d.findViewById(R.id.doneButton);
doneButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
addSemesters();
}
});
closePopup = (TextView) d.findViewById(R.id.exitButton);
closePopup.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
d.dismiss();
}
});
d.show();
}
// Adds semesters to Main Activity
public void addSemesters() {
getSemesterName = semesterName.getText().toString();
if (semesterArray.contains(getSemesterName)) {
Toast.makeText(getBaseContext(), "Semester Name Already Exists", Toast.LENGTH_SHORT).show();
} else if (getSemesterName == null || getSemesterName.trim().equals("")) {
Toast.makeText(getBaseContext(), "Cannot Add Empty Semester Name", Toast.LENGTH_SHORT).show();
} else {
semesterArray.add(getSemesterName);
mySemesters.add(new Semester(getSemesterName, semesterBackgrounds.get(new Random().nextInt(randomBackground.length))));
customSemesterAdapter = new SemesterAdapter(getApplicationContext(), R.layout.semester_row, mySemesters);
semesterListView.setAdapter(customSemesterAdapter);
d.dismiss();
}
}
// Removes unwanted semesters from Main Activity
public void removeSemesters() {
semesterListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {
AlertDialog.Builder deleteAlert = new AlertDialog.Builder(MainActivity.this);
deleteAlert.setTitle("Semester Deletion Process");
deleteAlert.setMessage("Are you sure you want to delete the selected Semesters?");
deleteAlert.setNegativeButton("No! Cancel", null);
deleteAlert.setPositiveButton("Yes! Delete", new AlertDialog.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
customSemesterAdapter.remove(customSemesterAdapter.getItem(position));
semesterArray.remove(position);
customSemesterAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this, "Semester Deleted Successfully.", Toast.LENGTH_SHORT).show();
}
});
deleteAlert.show();
return false;
}
});
openSemestersActivity();
}
// Open the SemesterActivity and uses .putExtra to pass data to the SemesterActivity to tell it what semester to render
// data accordingly
public void openSemestersActivity() {
final Intent semester = new Intent(this, SemesterActivity.class);
semesterListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
semester.putExtra("semester", semesterName.getText().toString());
startActivity(semester);
}
});
}
}
This is my SemesterActivity code: (My SemestersActivity is where Courses are added)
package com.example.gradecalculator;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import java.util.ArrayList;
import java.util.Random;
public class SemesterActivity extends AppCompatActivity {
// Private Fields
private Dialog d;
private EditText courseName;
private EditText courseCode;
private EditText courseCredits;
private ListView courseListView;
private ArrayList<String> courseArray = new ArrayList<String>();
private CourseAdapter customCourseAdapter;
private ArrayList<Course> myCourses = new ArrayList<>();
private ArrayList<String> coursesBackgrounds = new ArrayList<String>();
private String getCourseName;
private String getCourseCode;
private String getCourseCredits;
private int randomBackground[] = new int[7];
private TextView courseNameView;
private TextView courseCodeView;
private TextView courseCreditsView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_semester);
d = new Dialog(this);
courseNameView = (TextView) d.findViewById(R.id.editTextCourseName);
courseCodeView = (TextView) d.findViewById(R.id.editTextCourseCode);
courseCreditsView = (TextView) d.findViewById(R.id.editTextCourseCredits);
courseListView = (ListView) findViewById(R.id.coursesList);
// Retrieving the Extra and determining the semester we want to load
Intent myIntent = getIntent();
String semester = myIntent.getStringExtra("semester");
removeCourses();
// Initiating toolbar
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Adding backgrounds to the backgrounds ArrayList
coursesBackgrounds.add("orange_background_big");
coursesBackgrounds.add("green_background_big");
coursesBackgrounds.add("aqua_background_big");
coursesBackgrounds.add("blue_background_big");
coursesBackgrounds.add("pink_background_big");
coursesBackgrounds.add("purple_background_big");
coursesBackgrounds.add("red_background_big");
coursesBackgrounds.add("yellow_background_big");
}
// Creating a custom Menu
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.top_menu, menu);
return true;
}
// Buttons in the custom Menu
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.editButton:
Toast.makeText(this, "Delete the desired Courses by clicking on the trash button located to the right of each Semester", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
// New course popup
public void newCoursePopup(View v) {
TextView closePopup;
ImageButton doneButton;
d.setContentView(R.layout.new_course_popup);
courseName = (EditText) d.findViewById(R.id.editTextCourseName);
courseCode = (EditText) d.findViewById(R.id.editTextCourseCode);
courseCredits = (EditText) d.findViewById(R.id.editTextCourseCredits);
doneButton = (ImageButton) d.findViewById(R.id.doneButton);
doneButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
addCourses();
}
});
closePopup = (TextView) d.findViewById(R.id.exitButton);
closePopup.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
d.dismiss();
}
});
d.show();
}
// Adding courses to the Semester
public void addCourses() {
getCourseName = courseName.getText().toString();
getCourseCode = courseCode.getText().toString();
getCourseCredits = courseCredits.getText().toString();
if(courseArray.contains(getCourseName)) {
Toast.makeText(getBaseContext(), "Course Name Already Exists", Toast.LENGTH_SHORT).show();
}
else if(getCourseName == null || getCourseName.trim().equals("")) {
Toast.makeText(getBaseContext(), "Cannot Add Empty Course Name", Toast.LENGTH_SHORT).show();
}
else {
courseArray.add(getCourseName);
myCourses.add(new Course(getCourseName, getCourseCode, getCourseCredits, coursesBackgrounds.get(new Random().nextInt(randomBackground.length))));
customCourseAdapter = new CourseAdapter(getApplicationContext(), R.layout.course_row, myCourses);
courseListView.setAdapter(customCourseAdapter);
d.dismiss();
}
}
// Removing courses from the Semester
public void removeCourses() {
courseListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {
AlertDialog.Builder deleteAlert = new AlertDialog.Builder(SemesterActivity.this);
deleteAlert.setTitle("Course Deletion Process");
deleteAlert.setMessage("Are you sure you want to delete the selected Courses?");
deleteAlert.setNegativeButton("No! Cancel", null);
deleteAlert.setPositiveButton("Yes! Delete", new AlertDialog.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
customCourseAdapter.remove(customCourseAdapter.getItem(position));
courseArray.remove(position);
customCourseAdapter.notifyDataSetInvalidated();
Toast.makeText(SemesterActivity.this, "Course Deleted Successfully", Toast.LENGTH_SHORT).show();
}
});
deleteAlert.show();
return false;
}
});
}
}

There are a couple of databases you can look into; You can use Room or Realm. You can also check out online DBs like Firestore by Firebase. The beauty about having an online db a user(Student) can access their data from a different phone if they lose or replace their current one. A recommended way to go is to have both to cover both scenarios.

Reload Data on Spinner itemSelected

I guess i'm implementing the spinner onItemSelected inappropriately.
So i have spinner values loaded from my database. I'm trying to load data according to the spinner selected but the spinner doesn't persist and the id doesn't pass to the activity. It loads a default id of 1 instead of the selected spinner id. So i'm not sure if the spinner id is being passed. How do i check these and correct them?
package com.example.app;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Color;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.AppBarLayout;
import android.support.design.widget.BottomNavigationView;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Response;
import com.android.volley.RetryPolicy;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.google.firebase.messaging.FirebaseMessaging;
import com.example.app.Config;
import com.example.app.R;
import com.example.app.fragment.FragmentCategory;
import com.example.app.fragment.FragmentFavorite;
import com.example.app.fragment.FragmentProfile;
import com.example.app.fragment.FragmentRecent;
import com.example.app.fragment.FragmentVideo;
import com.example.app.models.Constituency;
import com.example.app.utils.AppBarLayoutBehavior;
import com.example.app.utils.Constant;
import com.example.app.utils.GDPR;
import com.squareup.picasso.Picasso;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import uk.co.chrisjenx.calligraphy.CalligraphyConfig;
public class MainActivity extends AppCompatActivity {
String URL="https://xxx.xxx.xxx/api/get_constituency_index/?api_key="+
Config.API_KEY;
private long exitTime = 0;
MyApplication myApplication;
View view;
private BottomNavigationView navigation;
public ViewPager viewPager;
private Toolbar toolbar;
MenuItem prevMenuItem;
int pager_number = 5;
BroadcastReceiver broadcastReceiver;
Spinner mySpinner;
ArrayList<String> spinnerConstituencyName;
int spinConstID;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Set Font
CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
.setDefaultFontPath("fonts/Arkhip_font.ttf")
.setFontAttrId(R.attr.fontPath)
.build());
setContentView(R.layout.activity_main);
view = findViewById(android.R.id.content);
if (Config.ENABLE_RTL_MODE) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
}
}
AppBarLayout appBarLayout = findViewById(R.id.tab_appbar_layout);
((CoordinatorLayout.LayoutParams) appBarLayout.getLayoutParams()).setBehavior(new AppBarLayoutBehavior());
myApplication = MyApplication.getInstance();
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setTitle(R.string.app_name);
spinnerConstituencyName = new ArrayList<>();
mySpinner = findViewById(R.id.mySpinner);
loadSpinnerData(URL);
mySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
int check = 0;
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
/*String spinConstituency = mySpinner.getItemAtPosition(mySpinner.getSelectedItemPosition()).toString();
Toast.makeText(getApplicationContext(), spinConstituency, Toast.LENGTH_LONG).show();*/
if ( ++check > 1 ){
PrefManager prefManager = new PrefManager(MainActivity.this);
prefManager.writeString("" + spinConstID);
Intent intent = getIntent();
startActivity(intent);
Toast.makeText(getApplicationContext(), mySpinner.getItemAtPosition(mySpinner.getSelectedItemPosition()).toString() + " Showing", Toast.LENGTH_SHORT).show();
finish();
}
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
viewPager = findViewById(R.id.viewpager);
viewPager.setAdapter(new MyAdapter(getSupportFragmentManager()));
viewPager.setOffscreenPageLimit(pager_number);
navigation = findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.navigation_home:
viewPager.setCurrentItem(0);
return true;
case R.id.navigation_category:
viewPager.setCurrentItem(1);
return true;
case R.id.navigation_video:
viewPager.setCurrentItem(2);
return true;
case R.id.navigation_favorite:
viewPager.setCurrentItem(3);
return true;
case R.id.navigation_profile:
viewPager.setCurrentItem(4);
return true;
}
return false;
}
});
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
if (prevMenuItem != null) {
prevMenuItem.setChecked(false);
} else {
navigation.getMenu().getItem(0).setChecked(false);
}
navigation.getMenu().getItem(position).setChecked(true);
prevMenuItem = navigation.getMenu().getItem(position);
if (viewPager.getCurrentItem() == 1) {
toolbar.setTitle(getResources().getString(R.string.title_nav_category));
} else if (viewPager.getCurrentItem() == 2) {
toolbar.setTitle(getResources().getString(R.string.title_nav_video));
} else if (viewPager.getCurrentItem() == 3) {
toolbar.setTitle(getResources().getString(R.string.title_nav_favorite));
} else if (viewPager.getCurrentItem() == 4) {
toolbar.setTitle(getResources().getString(R.string.title_nav_favorite));
} else {
toolbar.setTitle(R.string.app_name);
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
if (Config.ENABLE_RTL_MODE) {
viewPager.setRotationY(180);
}
broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
// checking for type intent filter
if (intent.getAction().equals(Constant.REGISTRATION_COMPLETE)) {
// now subscribe to global topic to receive app wide notifications
FirebaseMessaging.getInstance().subscribeToTopic(Constant.TOPIC_GLOBAL);
} else if (intent.getAction().equals(Constant.PUSH_NOTIFICATION)) {
// new push notification is received
String message = intent.getStringExtra("message");
Toast.makeText(getApplicationContext(), "Push notification: " + message, Toast.LENGTH_LONG).show();
}
}
};
Intent intent = getIntent();
final String message = intent.getStringExtra("message");
final String imageUrl = intent.getStringExtra("image");
final long nid = intent.getLongExtra("id", 0);
final String link = intent.getStringExtra("link");
if (message != null) {
LayoutInflater layoutInflaterAndroid = LayoutInflater.from(MainActivity.this);
View mView = layoutInflaterAndroid.inflate(R.layout.custom_dialog_notif, null);
final AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
alert.setView(mView);
final TextView notification_title = mView.findViewById(R.id.news_title);
final TextView notification_message = mView.findViewById(R.id.news_message);
final ImageView notification_image = mView.findViewById(R.id.news_image);
if (imageUrl.endsWith(".jpg") || imageUrl.endsWith(".jpeg") || imageUrl.endsWith(".png") || imageUrl.endsWith(".gif")) {
notification_title.setText(message);
notification_message.setVisibility(View.GONE);
Picasso.with(MainActivity.this)
.load(imageUrl.replace(" ", "%20"))
.placeholder(R.drawable.ic_thumbnail)
.resize(200, 200)
.centerCrop()
.into(notification_image);
alert.setPositiveButton(R.string.dialog_read_more, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(getApplicationContext(), ActivityNotificationDetail.class);
intent.putExtra("id", nid);
startActivity(intent);
}
});
alert.setNegativeButton(R.string.dialog_dismiss, null);
} else {
notification_title.setText(getResources().getString(R.string.app_name));
notification_message.setVisibility(View.VISIBLE);
notification_message.setText(message);
notification_image.setVisibility(View.GONE);
//Toast.makeText(getApplicationContext(), "link : " + link, Toast.LENGTH_SHORT).show();
if (!link.equals("")) {
alert.setPositiveButton("Continue", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Intent open = new Intent(Intent.ACTION_VIEW, Uri.parse(link));
startActivity(open);
}
});
alert.setNegativeButton(R.string.dialog_dismiss, null);
} else {
alert.setPositiveButton(R.string.dialog_ok, null);
}
}
alert.setCancelable(false);
alert.show();
}
GDPR.updateConsentStatus(this);
}
public class MyAdapter extends FragmentPagerAdapter {
private MyAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new FragmentRecent();
case 1:
return new FragmentCategory();
case 2:
return new FragmentVideo();
case 3:
return new FragmentFavorite();
case 4:
return new FragmentProfile();
}
return null;
}
#Override
public int getCount() {
return pager_number;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.search:
Intent intent = new Intent(getApplicationContext(), ActivitySearch.class);
startActivity(intent);
return true;
default:
return super.onOptionsItemSelected(menuItem);
}
}
#Override
public void onBackPressed() {
if (viewPager.getCurrentItem() != 0) {
viewPager.setCurrentItem((0), true);
} else {
exitApp();
}
}
public void exitApp() {
if ((System.currentTimeMillis() - exitTime) > 2000) {
Toast.makeText(this, getString(R.string.press_again_to_exit), Toast.LENGTH_SHORT).show();
exitTime = System.currentTimeMillis();
} else {
finish();
}
}
#Override
protected void onResume() {
super.onResume();
}
private int getIndex(Spinner spinner, String myString){
int index = 0;
for (int i=0;i<spinner.getCount();i++){
if (spinner.getItemAtPosition(i).equals(myString)){
index = i;
}
}
return index;
}
private void loadSpinnerData(String url) {
RequestQueue requestQueue=Volley.newRequestQueue(getApplicationContext());
StringRequest stringRequest=new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try{
JSONObject jsonObject=new JSONObject(response);
if(jsonObject.getString("status").equals("ok")){
JSONArray jsonArray=jsonObject.getJSONArray("constituencies");
for(int i=0;i<jsonArray.length();i++){
JSONObject jsonObject1=jsonArray.getJSONObject(i);
String spinConstituency=jsonObject1.getString("constituency_name");
spinConstID = jsonObject1.getInt("const_id");
spinnerConstituencyName.add(spinConstituency);
}
}
ArrayAdapter<String> myAdapter = new ArrayAdapter<String>(MainActivity.this,
R.layout.custom_spinner_item, spinnerConstituencyName){
#Override
public View getDropDownView(int position, View convertView,
ViewGroup parent) {
View view = super.getDropDownView(position, convertView, parent);
TextView tv = (TextView) view;
if(position%2 == 1) {
// Set the item background color
tv.setBackgroundColor(Color.parseColor("#910D3F"));
}
else {
// Set the alternate item background color
tv.setBackgroundColor(Color.parseColor("#41061C"));
}
return view;
}
};
mySpinner.setPrompt("Select Your Constituency");
myAdapter.setDropDownViewResource(R.layout.custom_spinner_item);
mySpinner.setAdapter(myAdapter);
//RECEIVE DATA VIA INTENT
Intent i = getIntent();
String name = i.getStringExtra("NAME_KEY");
mySpinner.setSelection(getIndex(mySpinner, name));
}catch (JSONException e){e.printStackTrace();}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
});
int socketTimeout = 30000;
RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
stringRequest.setRetryPolicy(policy);
requestQueue.add(stringRequest);
}
}

Here is the problem (On Spinner Item selection)
Intent intent = getIntent();
startActivity(intent);
Toast.makeText(getApplicationContext(), mySpinner.getItemAtPosition(mySpinner.getSelectedItemPosition()).toString() + " Showing", Toast.LENGTH_SHORT).show();
finish();
**You are starting current activity as new and finish current activity, it means when you select any of items from spinner it will start a new activity and your on create executed again and again, so please place other logic or you can send your values in your activity using intent.putextra() and check in oncreate for null and if values is not null you can set spinner.setSelected(Your Position). For Fragment You can use
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.detach(ComingSoonFragment.this).attach(ComingSoonFragment.this).commit();
for refresh your fragment and pass your data with bundle and check for null if your bundle is null then use your code for defalt and if not null then set your data according to your id.
**
Thanks

In your spinner inside OnItemSelectedListener use parent.getItemAtPosition(position) to get the correct value
mySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(position).toString(),
Toast.LENGTH_SHORT).show();
//Do your staff here
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});

Android - items are inserted twice into database

I am making a checklist app and whenever I delete a checklist and then create a new one, the database creates a copy of the items in the new checklist and displays that into the ListView.
This is the class where I open and create tags:
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.preference.PreferenceManager;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.content.SharedPreferences;
import android.widget.TextView;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.lang.reflect.Type;
import static android.widget.AdapterView.*;
/*
Issues-
After deleting an item, and adding a new item and then editing that item:
listview has both the version edited after and before.
*/
public class MainActivity extends AppCompatActivity {
ListView mainScreenListView;
Button addChecklist;
ArrayList<String> listOptions = new ArrayList<String>();
ArrayAdapter<String> mainScreen;
Button deleteDB;
DatabaseHandler db;
List tags;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Removes the action bar at the top of the screen
getSupportActionBar().hide();
setContentView(R.layout.activity_main);
//Sets variables to xml elements
db = new DatabaseHandler(getApplicationContext());
mainScreenListView = (ListView) findViewById(R.id.listView);
addChecklist = (Button) findViewById(R.id.addCheckList);
deleteDB = (Button) findViewById(R.id.deleteDB);
//Sets background color of the listview
mainScreenListView.setBackgroundColor(Color.YELLOW);
mainScreen = new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_list_item_1, listOptions);
mainScreenListView.setAdapter(mainScreen);
tags = db.getAllTags();
if (!tags.isEmpty()) {
for (Object a : tags) {
Tag tag = (Tag) a;
listOptions.add(tag.getTagName());
mainScreen.notifyDataSetChanged();
}
}
registerForContextMenu(mainScreenListView);
//Data is given to this method to move to the next activity when the Add Checklist button is pressed
addChecklist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this, WriteList.class);
startActivityForResult(i, 1);
}
});
/*
When any item in the ListView is clicked, this method retrieves the name of the item as a string
and sends this info to the next activity
*/
mainScreenListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent moveToWriteList = new Intent(MainActivity.this, WriteList.class);
moveToWriteList.putExtra("title", mainScreenListView.getItemAtPosition(position).toString());
startActivity(moveToWriteList);
}
});
deleteDB.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
db.deleteAll();
listOptions.clear();
mainScreen.notifyDataSetChanged();
}
});
}
/*
This method retrieves any intent information sent back by the 2nd activity.
This info is added into the Arraylist which is the displayed in the listview.
*/
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1) {
if (resultCode == RESULT_OK) {
String title = data.getStringExtra("title");
listOptions.add(title);
tags = db.getAllTags();
mainScreen.notifyDataSetChanged();
}
}
}
//Creates the contextual menu that allows the option to edit/delete an item
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.contextual_menu, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()) {
case R.id.edit:
for (Object a : tags) {
Tag tag = (Tag) a;
if (tag.getTagName().equals(listOptions.get(info.position))) {
showInputBox(listOptions.get(info.position), info.position, tag.getId());
}
}
break;
case R.id.delete:
for (Object a : tags) {
Tag tag = (Tag) a;
if (tag.getTagName().equals(listOptions.get(info.position))) {
db.deleteTag(tag);
listOptions.remove(info.position);
mainScreen.notifyDataSetChanged();
break;
}
}
break;
}
return super.onContextItemSelected(item);
}
public void showInputBox(String oldItem, final int index, final long tag_id) {
final Dialog dialog = new Dialog(MainActivity.this);
dialog.setTitle("Input Box");
dialog.setContentView(R.layout.input_box);
TextView textMessage = (TextView) dialog.findViewById(R.id.txtmessage);
textMessage.setText("Update Item");
textMessage.setTextColor(Color.parseColor("#ff2222"));
final EditText editText = (EditText) dialog.findViewById(R.id.txtinput);
editText.setText(oldItem);
Button bt = (Button) dialog.findViewById(R.id.btdone);
bt.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String newItem = editText.getText().toString();
System.out.println("Showinputbox: index is: " + index);
listOptions.set(index, newItem);
int newTag_id = (int) tag_id;
Tag tag = new Tag(newTag_id, newItem);
db.updateTag(tag);
mainScreen.notifyDataSetChanged();
dialog.dismiss();
}
});
}
}
Creating of tags happen when the user types in the title of the checklist and then the items, although I realised a better way is to create it in MainActivity:
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Color;
import android.support.annotation.RequiresPermission;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import java.sql.SQLOutput;
import java.util.ArrayList;
import java.util.List;
import static android.widget.AdapterView.*;
/*
todo - refers to the the note object that is created whenever the user enters an item into the checklist
tag- refers to the checklist as a whole ('Shopping', 'Gym', etc)
*/
public class WriteList extends AppCompatActivity {
ArrayAdapter<String> listAdapter;
ArrayList<String> listItems = new ArrayList<String>();
ListView mainList;
EditText title;
EditText inputText;
Button addItem;
Button titleOK;
DatabaseHandler db;
long tag_id;
List<Todo> list;
private static final String logTag = "WriteList";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Removes the action bar at the top of the screen
getSupportActionBar().hide();
setContentView(R.layout.activity_write_list);
//Sets variables to xml elements
db = new DatabaseHandler(getApplicationContext());
mainList = (ListView) findViewById(R.id.listView);
title = (EditText) findViewById(R.id.title);
inputText = (EditText) findViewById(R.id.inputText);
addItem = (Button) findViewById(R.id.addItem);
titleOK = (Button) findViewById(R.id.titleOK);
//Sets background color of the listview
mainList.setBackgroundColor(Color.parseColor("#ffff9d"));
//Sets the hint to the EditText elements so the user knows what to type
inputText.setHint("Enter an item...");
title.setHint("Enter a title...");
//Links Adapter to the ListView which shows the ArrayList items
listAdapter = new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_list_item_1, listItems);
mainList.setAdapter(listAdapter);
registerForContextMenu(mainList);
Intent intent = getIntent();
Bundle b = intent.getExtras();
if (b != null) {
String newTitle = (String) b.get("title");
title.setText(newTitle);
tag_id = db.getTagName(newTitle);
//Retrieves all items connected with the checklist name (newTitle)
list = db.getAllToDosByTag(newTitle);
for (Todo todo : list) {
listItems.add(todo.getNote());
}
listAdapter.notifyDataSetChanged();
}
//Saves the title into the DB by creating a row in the Tag Table
titleOK.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String getTitle = title.getText().toString();
Tag tag = new Tag(getTitle);
tag_id = db.createTag(tag);
}
});
//db.deleteAll();
//Saves each todoNote item into the DB and displays in the ListView
addItem.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String input = inputText.getText().toString();
Log.i(logTag, "Adding item to db...");
if (null != input && input.length() > 0) {
listItems.add(input);
Todo todo = new Todo(input, 0);
long todo_id = db.createToDo(todo, tag_id);
listAdapter.notifyDataSetChanged();
inputText.getText().clear();
}
}
});
}
//Creates the contextual menu that allows the option to edit/delete an item
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.contextual_menu, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()) {
case R.id.edit:
for (Object a : list) {
Todo todo = (Todo) a;
if (todo.getNote().equals(listItems.get(info.position))) {
showInputBox(listItems.get(info.position), info.position, todo.getId());
}
}
break;
case R.id.delete:
for (Object a : list) {
Todo todo = (Todo) a;
if (todo.getNote().equals(listItems.get(info.position))) {
db.deleteToDo(todo.getId());
listItems.remove(info.position);
listAdapter.notifyDataSetChanged();
break;
}
}
break;
}
return super.onContextItemSelected(item);
}
public void onBackPressed() {
Log.i(logTag, "Back button pressed: going back to previous activity");
Intent intent = new Intent();
intent.putExtra("title", title.getText().toString());
setResult(RESULT_OK, intent);
finish();
}
public void showInputBox(String oldItem, final int index, final long todo_id) {
final Dialog dialog = new Dialog(WriteList.this);
dialog.setTitle("Input Box");
dialog.setContentView(R.layout.input_box);
TextView textMessage = (TextView) dialog.findViewById(R.id.txtmessage);
textMessage.setText("Update Item");
textMessage.setTextColor(Color.parseColor("#ff2222"));
final EditText editText = (EditText) dialog.findViewById(R.id.txtinput);
editText.setText(oldItem);
Button bt = (Button) dialog.findViewById(R.id.btdone);
bt.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String newItem = editText.getText().toString();
listItems.set(index, newItem);
int newTodoID = (int) todo_id;
Todo todo = new Todo(newTodoID, newItem, 0);
db.updateToDo(todo);
listAdapter.notifyDataSetChanged();
dialog.dismiss();
}
});
dialog.show();
}
}

I think your problem occurs because when you delete, you do not remove the deleted tag from the tags variable which currently holds all the tags. On the delete action you should also remove the deleted tag from this list. I rewrote a bit your switch statement over delete
case R.id.delete:
Tag tagToBeDeleted = null;
for (Object a : tags) {
Tag tag = (Tag) a;
if (tag.getTagName().equals(listOptions.get(info.position))) {
tagToBeDeleted = tag;
break;
}
}
if(tagToBeDeleted != null) {
tags.remove(tagToBeDeleted);
db.deleteTag(tagToBeDeleted);
listOptions.remove(info.position);
mainScreen.notifyDataSetChanged();
}
break;

The error lies in the Todo_Tags table. When you delete an item from a table, you should make sure that you are deleting that same item from any other tables if necessary otherwise it will cause issues when you are re-inserting any items.

Why was there a run error with some functions?

MainActivity mActivity = new MainActivity();
mActivity.countRecords();
The Way I Used to call function countRecords() Which it was inside OnClickListenerCreateStudent class But I found the message when the button is pressed but with this a way no problems
((MainActivity)context).countRecords(); What is the difference between them now ?
package com.example.train1;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button buttonCreateLocation = (Button) findViewById(R.id.buttonCreateStudent);
buttonCreateLocation.setOnClickListener(new OnClickListenerCreateStudent());
countRecords();
}
public void countRecords() {
int recordCount = new TableControllerStudent(this).count();
TextView textViewRecordCount = (TextView) findViewById(R.id.textViewRecordCount);
textViewRecordCount.setText(recordCount + " records found.");
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
package com.example.train1;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import android.app.Activity;
public class OnClickListenerCreateStudent implements View.OnClickListener {
//MainActivity M_activity;
//MainActivity mActivity// = new MainActivity();
#Override
public void onClick(View view) {
//M_activity = new MainActivity();
final Context context = view.getContext();
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View formElementsView = inflater.inflate(R.layout.student_input_form, null, false);
final EditText editTextStudentFirstname = (EditText) formElementsView.findViewById(R.id.editTextStudentFirstname);
final EditText editTextStudentEmail = (EditText) formElementsView.findViewById(R.id.editTextStudentEmail);
new AlertDialog.Builder(context).setView(formElementsView).setTitle("Create Student")
.setPositiveButton("Add",
new DialogInterface.OnClickListener() {
// countRecords();
public void onClick(DialogInterface dialog, int id) {
String studentFirstname = editTextStudentFirstname.getText().toString();
String studentEmail = editTextStudentEmail.getText().toString();
ObjectStudent objectStudent = new ObjectStudent();
objectStudent.firstname= studentFirstname;
objectStudent.email= studentEmail;
// call to table controller stud and put objectData
boolean createSuccessful = new TableControllerStudent(context).create(objectStudent);
if(createSuccessful){
Toast.makeText(context, "Student information was saved.", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(context, "Unable to save student information.", Toast.LENGTH_SHORT).show();
}
((MainActivity)context).countRecords();
MainActivity mActivity = new MainActivity();
mActivity.countRecords();
//((MainActivity)).
dialog.cancel();
}
}).show();
// Toast.makeText(context," "+context , Toast.LENGTH_LONG).show();
}
public class ObjectStudent {
int id;
String firstname;
String email;
public ObjectStudent(){
}
}
// class End
}

Never create your activities with the constructor, they're bound to not be initialized correctly sooner or later.
Create the Activity via the Intent, as in the docs:
Intent intent = new Intent(this, DisplayMessageActivity.class);

I have two activity.When i was click on first activity list view,second activity open. number of count in first activity also increase

I have two activities. When I clicked on first activity in list view, second activity opened .Second activity have one button number of item. when I clicked on second activity number of count goes to first activity. It is repeated process but number of count in first activity also gets increased.
My first activity..
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin;
import android.app.ActionBar;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AbsListView;
import android.os.Bundle;
import android.util.Log;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.adapter.ListAdapterAddItems;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.ListModel;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.json.JSONfunctions;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.URLEncoder;
import java.util.ArrayList;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class DetaisRESTActivity extends Activity {
String messagevaluename,totalamount,valueid,valueid1,valuename,pos;
public String countString=null;
public int count=0;
public String message=null;
public static String message1=null;
JSONObject jsonobject;
JSONArray jsonarray;
ListView listview;
ArrayList aa;
public TextView mTitleTextView;
public ImageButton imageButton;
ListAdapterAddItems adapter;
public TextView restaurantname = null;
public TextView ruppees = null;
String restaurantmenuname,rastaurantname;
ProgressDialog mProgressDialog;
ArrayList<ListModel> arraylist;
public static String RASTAURANTNAMEDETAILS = "RestaurantPizzaItemName";
public static String RASTAURANTRUPPEES = "RestaurantPizzaItemPrice";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.activity_detais_rest);
// getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.titlebar);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
LayoutInflater mInflater = LayoutInflater.from(this);
View mCustomView = mInflater.inflate(R.layout.titlebar, null);
mTitleTextView = (TextView) mCustomView.findViewById(R.id.textView123456789);
imageButton = (ImageButton) mCustomView
.findViewById(R.id.imageButton2);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), "Refresh Clicked!",
Toast.LENGTH_LONG).show();
Intent i=new Intent(DetaisRESTActivity.this,TotalPriceActivity.class);
startActivity(i);
}
});
actionBar.setCustomView(mCustomView);
actionBar.setDisplayShowCustomEnabled(true);
Intent intent = getIntent();
// get the extra value
valuename = intent.getStringExtra("restaurantmenuname");
valueid = intent.getStringExtra("restaurantmenunameid");
valueid1 = intent.getStringExtra("idsrestaurantMenuId5");
//totalamount = intent.getStringExtra("ruppees");
Log.i("valueid",valueid);
Log.i("valuename",valuename);
Log.i("valueid1",valueid1);
// Log.i("totalamount",totalamount);
new DownloadJSON().execute();
}
// DownloadJSON AsyncTask
private class DownloadJSON extends AsyncTask<Void,Void,Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Create a progressdialog
mProgressDialog = new ProgressDialog(DetaisRESTActivity.this);
// Set progressdialog title
mProgressDialog.setTitle("Android JSON Parse Tutorial");
// Set progressdialog message
mProgressDialog.setMessage("Loading...");
mProgressDialog.setIndeterminate(false);
// Show progressdialog
mProgressDialog.show();
Toast.makeText(DetaisRESTActivity.this, "Successs", Toast.LENGTH_LONG).show();
}
#Override
protected Void doInBackground(Void... params) {
// Create an array
arraylist = new ArrayList<ListModel>();
// Retrieve JSON Objects from the given URL address
// Log.i("123",value1);
jsonobject = JSONfunctions.getJSONfromURL("http://firstchoicefood.in/fcfapiphpexpert/phpexpert_restaurantMenuItem.php?r=" + URLEncoder.encode(valuename) + "&resid=" + URLEncoder.encode(valueid1) + "&RestaurantCategoryID=" + URLEncoder.encode(valueid) + "");
try {
// Locate the array name in JSON
jsonarray = jsonobject.getJSONArray("RestaurantMenItems");
Log.i("1234",""+jsonarray);
for (int i = 0; i < jsonarray.length(); i++) {
jsonobject = jsonarray.getJSONObject(i);
ListModel sched = new ListModel();
sched.setId(jsonobject.getString("id"));
sched.setProductName(jsonobject.getString("RestaurantPizzaItemName"));
sched.setPrice(jsonobject.getString("RestaurantPizzaItemPrice"));
arraylist.add(sched);
}
} catch (JSONException e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void args) {
// Locate the listview in listview_main.xml
listview = (ListView) findViewById(R.id.listViewdetails);
adapter = new ListAdapterAddItems();
listview.setAdapter(adapter);
// Close the progressdialog
mProgressDialog.dismiss();
//listview.invalidateViews();
adapter.notifyDataSetChanged();
// listview.notifyAll();
listview.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3)
{
// Get Person "behind" the clicked item
ListModel p =(ListModel)listview.getItemAtPosition(position);
// Log the fields to check if we got the info we want
Log.i("SomeTag",""+p.getId());
//String itemvalue=(String)listview.getItemAtPosition(position);
Log.i("SomeTag", "Persons name: " + p.getProductName());
Log.i("SomeTag", "Ruppees: " + p.getPrice());
//count++;
//countString=String.valueOf(count);
Toast toast = Toast.makeText(getApplicationContext(),
"Item " + (position + 1),
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
//Toast.makeText(getBaseContext(),
// countString, Toast.LENGTH_LONG).show();
Log.i("postititi",""+position);
// mTitleTextView.setText(countString);
Intent intent=new Intent(DetaisRESTActivity.this,QuentityActivity.class);
intent.putExtra("quentity",countString);
intent.putExtra("valueid",valueid);
intent.putExtra("valuename",valuename);
intent.putExtra("valueid1",valueid1);
intent.putExtra("id",p.getId());
intent.putExtra("name",p.getProductName());
intent.putExtra("price",p.getPrice());
startActivityForResult(intent,2);
// startActivity(intent);
}
});
}
}
// Call Back method to get the Message form other Activity
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
// check if the request code is same as what is passed here it is 2
if(requestCode==2)
{
// aa=new ArrayList();
pos=data.getStringExtra("POSITION");
message=data.getStringExtra("MESSAGE");
message1=data.getStringExtra("COUNTSTRING");
messagevaluename=data.getStringExtra("VALUENAME");
Log.i("xxxxxxxxxxx",message);
Log.i("xxxxxxxxxxx1234",pos);
Log.i("xxxxxxxxxxx5678count",message1);
Log.i("messagevaluename",messagevaluename);
//ruppees.setText(message);
mTitleTextView.setText(message1);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), message,
Toast.LENGTH_LONG).show();
Intent i=new Intent(DetaisRESTActivity.this,TotalPriceActivity.class);
i.putExtra("ruppees",message);
i.putExtra("id",pos);
i.putExtra("messagevaluename",messagevaluename);
startActivity(i);
}
});
}
}
//==========================
class ListAdapterAddItems extends ArrayAdapter<ListModel>
{
ListAdapterAddItems(){
super(DetaisRESTActivity.this,android.R.layout.simple_list_item_1,arraylist);
//imageLoader = new ImageLoader(MainActivity.this);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if(convertView == null){
LayoutInflater inflater = getLayoutInflater();
convertView = inflater.inflate(R.layout.cartlistitem, null);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();
}
holder.populateFrom(arraylist.get(position));
// arraylist.get(position).getPrice();
return convertView;
}
}
class ViewHolder {
ViewHolder(View row) {
restaurantname = (TextView) row.findViewById(R.id.rastaurantnamedetailsrestaurant);
ruppees = (TextView) row.findViewById(R.id.rastaurantcuisinedetalsrestaurant);
}
// Notice we have to change our populateFrom() to take an argument of type "Person"
void populateFrom(ListModel r) {
restaurantname.setText(r.getProductName());
ruppees.setText(r.getPrice());
}
}
//=============================================================
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_detais_rest, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
return super.onOptionsItemSelected(item);
}
}
Second activity....
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin;
import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.ListModel;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.json.JSONfunctions;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.URLEncoder;
import java.util.ArrayList;
public class QuentityActivity extends Activity {
String value=null;
public String TotAmt=null;
String Name;
ImageButton positive,negative;
String position;
int count = 1;
int tot_amt = 0;
public String countString=null;
String Rs,name,price;
String valueid,valueid1,valuename;
JSONObject jsonobject;
JSONArray jsonarray;
ListView listview;
public TextView ruppees,submenuname,totalruppees,quantity,addtocart;
ProgressDialog mProgressDialog;
ArrayList<ListModel> arraylist;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quentity);
ActionBar actionBar = getActionBar();
// Enabling Up / Back navigation
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
Intent intent = getIntent();
// get the extra value
value = intent.getStringExtra("quentity");
valuename = intent.getStringExtra("valuename");
valueid = intent.getStringExtra("valueid");
valueid1 = intent.getStringExtra("valueid1");
name=intent.getStringExtra("name");
price=intent.getStringExtra("price");
position=intent.getStringExtra("id");
Log.i("valueid",valueid);
Log.i("valuename",valuename);
Log.i("valueid1",valueid1);
Log.i("name",name);
Log.i("price",price);
Log.i("id1",position);
quantity=(TextView)findViewById(R.id.rastaurantcuisinedetalsrestaurantquantity);
totalruppees=(TextView)findViewById(R.id.rastaurantnamequentitytotal1);
submenuname=(TextView)findViewById(R.id.rastaurantnamesubmenuquentity);
ruppees=(TextView)findViewById(R.id.rastaurantnamequentity1);
positive=(ImageButton)findViewById(R.id.imageButtonpositive);
negative=(ImageButton)findViewById(R.id.imageButtonnegative);
addtocart=(TextView)findViewById(R.id.textViewaddtocart);
buttonclick();
addtocart();
// value1 = intent.getStringExtra("numericitem");
// int numericvalue = intent.getIntExtra("numericitem", 11);
submenuname.setText(name);
ruppees.setText(price);
totalruppees.setText(price);
// new DownloadJSON().execute();
}
public void buttonclick(){
positive.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String getString =quantity.getText().toString();
String totalAmtString = ruppees.getText().toString();
int totAmount = Integer.parseInt(totalAmtString);
//count = Integer.parseInt(getString);
count++;
countString = String.valueOf(count);
tot_amt = totAmount * count;
TotAmt = String.valueOf(tot_amt);
totalruppees.setText(TotAmt);
quantity.setText(countString);
}
});
negative.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String getString =quantity.getText().toString();
String totalAmtString = ruppees.getText().toString();
int totAmount = Integer.parseInt(totalAmtString);
//count = Integer.parseInt(getString);
if (count > 1)
count--;
countString = String.valueOf(count);
tot_amt = totAmount * count;
TotAmt = String.valueOf(tot_amt);
totalruppees.setText(TotAmt);
quantity.setText(countString);
}
});
}
public void addtocart(){
addtocart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent=new Intent();
intent.putExtra("MESSAGE",TotAmt);
intent.putExtra("POSITION",position);
intent.putExtra("COUNTSTRING",countString);
intent.putExtra("VALUENAME",valuename);
setResult(2,intent);
finish();//finishing activity
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_quentity, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

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