Hi i'm new here and firstly i want to apologise for my language .I wanted to create my first android app ,and im curently struggle with some issues.
MainActivity ,which represents my main screen containing two buttons and spinner.In spinner user can choose one text file and after selection spinnerActivity should be triggered(screen with opened text file).I found problem because not every record from spinner trigger activity with text file that i want (one trigger file that i want and other trigger screen with empty TextView). Here is layout of spinnerActivity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<TextView
android:id="#+id/textView2"
android:layout_width="199dp"
android:layout_height="89dp"
android:layout_below="#+id/editText1"
android:layout_centerHorizontal="true"
android:text="nie dziala" />
<TextView
android:id="#+id/proximityTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0.0"
android:textAppearance="?android:attr/textAppearanceLarge"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
Code of MainACtivity
package com.example.myapp;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
public class MainActivity extends ActionBarActivity implements OnItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button click=(Button)findViewById(R.id.button2);
click.setOnClickListener(new View.OnClickListener(){ //nowy actionlistener
#Override
public void onClick(View v) {
Intent activitylauncher=new Intent(MainActivity.this,AboutActivity.class);
//tworzenie nowej intencji Create an intent for a specific component.
startActivity(activitylauncher);
}
});
final Button click2=(Button)findViewById(R.id.button1);
click2.setOnClickListener(new View.OnClickListener() { //nowy actionlistener
#Override
public void onClick(View v) {
Intent activitylauncher=new Intent(MainActivity.this,RandomActivity.class);
//tworzenie nowej intencji Create an intent for a specific component.
startActivity(activitylauncher);
}
});
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,R.array.recipie_array, android.R.layout.simple_spinner_item);
// Specify the layut to use when the list of choices appears
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
}
public void onItemSelected(AdapterView<?> parent, View view,
int pos, long id) {
// String i=Integer.toString(pos);
if(pos==1)
{
Intent intent3 = new Intent(MainActivity.this, SpinnerActivity.class);
intent3.putExtra("txt",(pos));
startActivity(intent3);
}
if(pos==2)
{
Intent intent3 = new Intent(MainActivity.this, SpinnerActivity.class);
startActivity(intent3);
}
if(pos==1)
{
Intent intent3 = new Intent(MainActivity.this, SpinnerActivity.class);
startActivity(intent3);
}
}
// An item was selected. You can retrieve the selected item using
// parent.getItemAtPosition(pos)
public void onNothingSelected(AdapterView<?> parent) {
// Another interface callback
}
#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);
}
}
and the code of spinneractivity
package com.example.myapp;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import android.content.Intent;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
public class SpinnerActivity extends ActionBarActivity implements SensorEventListener {
TextView proxText;
SensorManager sm;
Sensor proxSensor;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_spinner);
//proximitymeter
sm=(SensorManager)getSystemService(SENSOR_SERVICE);
proxSensor=sm.getDefaultSensor(Sensor.TYPE_PROXIMITY);
proxText=(TextView)findViewById(R.id.proximityTextView);
sm.registerListener(this,proxSensor,SensorManager.SENSOR_DELAY_NORMAL);
Intent intent3 = getIntent();
int value = intent3.getIntExtra("txt", 0);
//finish();
if (value==1)
{
open("przepis1.txt");
}
if (value==2)
{
open("przepis2.txt");
}
if (value==3)
{
open("przepis3.txt");
}
}
public void open(String name){
File sdcard = Environment.getExternalStorageDirectory();
//Get the text file
File file = new File(sdcard,name);
//Read text from file
StringBuilder text = new StringBuilder();
try {
BufferedReader bufor = new BufferedReader(new FileReader(file));
String line;
while ((line = bufor.readLine()) != null) {
text.append(line);
text.append('\n');
}
bufor.close();
}
catch (IOException e) {
//You'll need to add proper error handling here
}
//Find the view by its id
TextView tv = (TextView)findViewById(R.id.textView2);
//Set the text
tv.setText(text);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.spinner, 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);
}
#Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
//proxText.setText(String.valueOf(event.values[0]));
}
#Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
}
Can someone look at this and help me with finding bugs?Thanks
Position starts form 0, I think problem is with the conditions,
You can write like this-
public void onItemSelected(AdapterView<?> parent, View view,
int pos, long id) {
Intent intent = new Intent(MainActivity.this, SpinnerActivity.class);
intent.putExtra("txt", pos + 1);
startActivity(intent);
}
Related
I can not figure out why this code output always show NaN. Is there anybody who can help me figure out where I did mistake?
package com.example.user.solar_calculator;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.content.Context;
import android.content.Intent;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.Toast;
public class efficiency extends Activity {
Button button;
EditText efficiency;
EditText vol;
String e,v;
double e1,wat,v1, AC_Load_in_ampere_hour_calculation,dc;
double load,load_vol,Total_Daily_load,lol;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_efficiency);
initControls();
addListenerOnButton();
}
public void initControls() {
efficiency=(EditText)findViewById(R.id.editText1);
vol=(EditText)findViewById(R.id.editText2);
button=(Button)findViewById(R.id.button);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
try {
e1=Double.parseDouble(efficiency.getText().toString()); // Make use of autoboxing. It's also easier to read.
} catch (NumberFormatException e) {
e1=1;
}
try {
v1=Double.parseDouble(vol.getText().toString());// Make use of autoboxing. It's also easier to read.
} catch (NumberFormatException e) {
v1=1;
}
Bundle extras = getIntent().getExtras();
if(extras !=null) {
String value = extras.getString("FOUR");
load=Double.parseDouble(value.toString());
}
wat=load_vol*(1+.1);
AC_Load_in_ampere_hour_calculation = (load)/( v1* (e1/100));
Total_Daily_load=AC_Load_in_ampere_hour_calculation+dc;
Intent i = new Intent(efficiency.this, calculation.class);
//Create the bundle
Bundle bundle = new Bundle();
//Add your data to bundle
bundle.putString("seven", String.valueOf(AC_Load_in_ampere_hour_calculation));
bundle.putString("eight", String.valueOf(Total_Daily_load));
bundle.putString("nine", String.valueOf(dc));
//Add the bundle to the intent
i.putExtras(bundle);
//Fire that second activity
startActivity(i);
}
});
}
public void addListenerOnButton() {
final Context context = this;
button = (Button) findViewById(R.id.button);
}
#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_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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
I think the line who cause problem is AC_Load_in_ampere_hour_calculation = (load)/( v1* (e1/100));
Because if v1 = 0 it will be impossible.
The app crashes when i tried to test, i am using fragments to create the app:
App crashed
I have this in audioFragment.java:
package amaguenet.com.reproductorxassidas;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.media.MediaPlayer;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class audioFragment extends Fragment {
// variable declaration
private ListView mainList;
private MediaPlayer mp;
private final String[] listContent = {"Ahonzubilahi Min Mayli", "Ajabani Khayru Baqin", "Ajabani Rabbu Sama", "Ala Innani Usni",
"Alal Muntaqa Khayril Baraya"};
private final int[] resID = {R.raw.ahonzu_bilahi_min_mayli, R.raw.ajabani_khayru_baqin, R.raw.ajabani_rabbu_sama,
R.raw.ala_innani_usni, R.raw.alal_muntaqa_khayril_baraya};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_audio, container, false);
// Initializing variables
mp = new MediaPlayer();
mainList = (ListView) v.findViewById(R.id.listView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, listContent);
mainList.setAdapter(adapter);
mainList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view,
int position, long id) {
playSong(position);
}
});
return v;
}
public void playSong(int songIndex) {
// Play song
mp.reset();// stops any current playing song
mp = MediaPlayer.create(getActivity().getApplicationContext(), resID[songIndex]);// create's
// new
// mediaplayer
// with
// song.
mp.start(); // starting mediaplayer
}
#Override
public void onDestroy() {
super.onDestroy();
mp.release();
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Inflate the menu; this adds items to the action bar if it is present.
super.onCreateOptionsMenu(menu, inflater);
}
#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);
}
public interface OnFragmentInteractionListener {
}
}
And this in a in fragment_audio (the layout):
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="amaguenet.com.reproductorxassidas.audioFragment"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
</ListView>
</RelativeLayout>
Can some helps with this, i am using Fragments in Android Studio?
You can use getIdentifier() method, here is a simple example:
private final int resID = getContext().getResources().getIdentifier(direction, "raw", PACKAGE_NAME);
direction - string with your file name f.e: "ahonzu_bilahi_min_mayli"
PACKAGE_NAME - is your package name
Fairly new to Android and I am trying to do some background color changes. Basically I have a main activity that only has a FrameLayout in it's xml. When the activity is created it opens up a fragment for my program. I have a menu item that when clicked pops a dialog box with 3 seekbars(red, green, blue). I want to change the background color to whatever the seekbars position is. I have all the code finished for the seekbars and I know it works on a simple app I created. For reasons to me unknown my app fails when i try to open the dialog box. What is the proper way to set this up in the Main Activity? I want the user to be able to change the background color whenever they want. All my fragment layouts are transparent. This is the tutorial I have been working off of. http://android-er.blogspot.com/2009/08/change-background-color-by-seekbar.html Any advice would be great. I think my problem is I do not fully understand how to access my main_activity's FrameLayout from with-in my MainActivity java class.
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical"
android:background="#e3a153">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragmentView"></FrameLayout>
</LinearLayout>
Color_seekbar_selecter.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/myScreen"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Change color"
/>
<SeekBar
android:id="#+id/mySeekingBar_R"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"/>
<SeekBar
android:id="#+id/mySeekingBar_G"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"/>
<SeekBar
android:id="#+id/mySeekingBar_B"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"/>
</LinearLayout>
menu_main.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".MainActivity">
<item android:id="#+id/menu_settings"
android:title="Green" />
<item android:id="#+id/menu_red"
android:title="Red" />
<item android:id="#+id/menu_blue"
android:title="Blue" />
<item android:id="#+id/menu_tan"
android:title="Tan" />
</menu>
MainActivity.java
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Color;
import android.os.Build;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.text.Layout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.Toast;
import java.util.zip.Inflater;
public class MainActivity extends ActionBarActivity {
//public CategoryFragment categoryFragment;
//public RecipeFragment recipeFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(savedInstanceState == null)
{
CategoryFragment categoryFragment = new CategoryFragment();
getSupportFragmentManager().beginTransaction()
.add(R.id.fragmentView, categoryFragment, "categoryFrag")
.commit();
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onDestroy() {
super.onDestroy();
}
#Override
protected void onPostResume() {
super.onPostResume();
}
#Override
protected void onPause() {
super.onPause();
}
#Override
protected void onResume() {
super.onResume();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate( R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId())
{
case R.id.menu_green:
}
return super.onOptionsItemSelected(item);
}
}
I have tried for hours to figure this out, but I just don't know where to put what.
This is the code from the example that I found in the link posted above.
import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.SeekBar;
public class SeekColorActivity extends Activity {
private int seekR, seekG, seekB;
SeekBar redSeekBar, greenSeekBar, blueSeekBar;
LinearLayout mScreen;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mScreen = (LinearLayout) findViewById(R.id.myScreen);
redSeekBar = (SeekBar) findViewById(R.id.mySeekingBar_R);
greenSeekBar = (SeekBar) findViewById(R.id.mySeekingBar_G);
blueSeekBar = (SeekBar) findViewById(R.id.mySeekingBar_B);
updateBackground();
redSeekBar.setOnSeekBarChangeListener(seekBarChangeListener);
greenSeekBar.setOnSeekBarChangeListener(seekBarChangeListener);
blueSeekBar.setOnSeekBarChangeListener(seekBarChangeListener);
}
private SeekBar.OnSeekBarChangeListener seekBarChangeListener
= new SeekBar.OnSeekBarChangeListener()
{
#Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
updateBackground();
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
};
private void updateBackground()
{
seekR = redSeekBar.getProgress();
seekG = greenSeekBar.getProgress();
seekB = blueSeekBar.getProgress();
mScreen.setBackgroundColor(
0xff000000
+ seekR * 0x10000
+ seekG * 0x100
+ seekB
);
}
}
categoryFragment.java
package com.example.mikesgamerig.finalproject;
import android.app.AlertDialog;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
public class CategoryFragment extends Fragment {
private ArrayList<String> categoryNameArrayList;
private ArrayAdapter<String> adapter;
private AlertDialog alertDialog;
private AlertDialog alertDialogDelete;
private EditText categoryEditText;
private String getCategoryName;
private List<Category> cats;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//create view
View rootView = inflater.inflate(R.layout.fragment_category, container, false);
//initialize all variables and widgets
inflater = getLayoutInflater(savedInstanceState);
alertDialog = new AlertDialog.Builder(getActivity()).create();
alertDialog.setView(inflater.inflate(R.layout.dialog_add_category, null));
alertDialogDelete = new AlertDialog.Builder(getActivity()).create();
alertDialogDelete.setView(inflater.inflate(R.layout.dialog_delete_category, null));
Button buttonAddCategory = (Button) rootView.findViewById(R.id.addCategoryButton);
ListView categoryListView = (ListView) rootView.findViewById(R.id.list);
//Array list to store names of categories
categoryNameArrayList = new ArrayList<String>();
//List of Category Objects
cats = Category.listAll(Category.class);
getCategoryNames();
//iterate through the CategoryList and attach to the ArrayList
//create adapter and fill the listView with all the name of categories
adapter = new ArrayAdapter<String>(getActivity(), R.layout.rowlayout, R.id.label, categoryNameArrayList);
categoryListView.setAdapter(adapter);
//set OnClick listener for the add category Button.
// This calls another method that will open a custom dialog box
buttonAddCategory.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
DisplayAddCategoryDialogBox();
}
});
//set an onItemLongClick listener for the ListView.
//First have to setLongClickable to true.
//the OnItemLongClick listener will call a method to open a custom Dialog to delete a category.
categoryListView.setLongClickable(true);
categoryListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
DeleteCategory(i);
return true;
}
});
//opens up a new fragment with a list of recipes for the specific category.
categoryListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String name = categoryNameArrayList.get(i);
RecipeFragment fragment = new RecipeFragment();
fragment.SetTitleName(name);
getFragmentManager().beginTransaction()
.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left, R.anim.slide_in_left, R.anim.slide_out_right)
.replace(R.id.fragmentView, fragment)
.addToBackStack(null).commit();
}
});
return rootView;
}
//This method will Display a custom add category Dialog Box.
public void DisplayAddCategoryDialogBox(){
//Show the Dialog box to enter a new category name.
alertDialog.show();
categoryEditText = (EditText) alertDialog.findViewById(R.id.categoryEditText);
Button saveCategoryDialogBtn = (Button) alertDialog.findViewById(R.id.saveBtn);
Button cancelDialogButton = (Button) alertDialog.findViewById(R.id.cancelBtn);
saveCategoryDialogBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
getCategoryName = categoryEditText.getText().toString();
//Log.d("STRING VALUE:", getCategoryName);
Category test = new Category(getCategoryName);
test.save();
categoryNameArrayList.add(test.getName());
//Log.d("added Value: ", test.getName());
adapter.notifyDataSetChanged();
alertDialog.hide();
}
});
cancelDialogButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
alertDialog.hide();
}
});
}
//this method will display a custom Delete Category Alert Dialog box.
public void DeleteCategory(final int i)
{
alertDialogDelete.show();
Button noBtn = (Button) alertDialogDelete.findViewById(R.id.noBtn);
noBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
alertDialogDelete.hide();
}
});
Button yesBtn = (Button) alertDialogDelete.findViewById(R.id.yesBtn);
yesBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String tempString = categoryNameArrayList.get(i);
//Log.d("VALUE OF STRING= ", tempString);
categoryNameArrayList.remove(i);
for (Category category : cats) {
String name = category.getName();
if (name.equals(tempString)) {
category.delete();
}
}
adapter.notifyDataSetChanged();
alertDialogDelete.hide();
}
});
}
//Filles the Array
public void getCategoryNames()
{
for(Category category : cats)
{
String name = category.getName();
categoryNameArrayList.add(name);
}
}
}
I am trying to build sample Android app in which the main activity contains a YouTubePlayerFragment. I get no errors with my implementation, but when I run this app on an AVD or my phone, the fragment for the YouTubePlayerFragment is just a black box. No video loads.
Any help is greatly appreciated.
Here is my code:
YouTubeFragment.java
package androidsample.example.com.fragments1;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerFragment;
public class YouTubeFragment extends YouTubePlayerFragment implements YouTubePlayer.OnInitializedListener {
// TODO: Rename and change types and number of parameters
public static YouTubeFragment newInstance() {
YouTubeFragment fragment = new YouTubeFragment();
return fragment;
}
private void init(){
initialize(DeveloperKey.DEVELOPER_KEY, this);
}
public YouTubeFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.activity_main, container, false);
YouTubeFragment ytf = newInstance();
ytf.init();
//inside fragment use getFragmentManager instead of getFragmentSupportManager
getFragmentManager().beginTransaction()
.add(R.id.youTubePlayer, ytf)
.commit();
return view;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onDetach() {
super.onDetach();
}
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
if (!wasRestored) {
player.cueVideo("nCgQDjiotG0");
}
}
#Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
Toast.makeText(getActivity(), "Failured to Initialize!", Toast.LENGTH_LONG).show();
}
}
MainActivity.java
package androidsample.example.com.fragments1;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#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_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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<fragment
android:name="com.google.android.youtube.player.YouTubePlayerFragment"
android:id="#+id/youTubePlayer"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</RelativeLayout>
I don't think you need to create a newInstance(). The instance is created in your xml. And when you are in onCreateView that is a specific instance already.
So you should be able to replace these lines
YouTubeFragment ytf = newInstance();
ytf.init();
With
this.init();
Or more simply
init();
With some help, I have a working version of this (problems with target SDK 21, using 19):
YouTubeFailureRecoveryActivity.java
package androidsample.example.com.fragments2;
import android.widget.Toast;
import com.google.android.youtube.player.YouTubeBaseActivity;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerFragment;
public class YouTubeFailureRecoveryActivity extends YouTubeBaseActivity implements
YouTubePlayer.OnInitializedListener{
private static final int RECOVERY_DIALOG_REQUEST = 1;
#Override
public void onInitializationFailure(YouTubePlayer.Provider provider,
YouTubeInitializationResult errorReason) {
if (errorReason.isUserRecoverableError()) {
errorReason.getErrorDialog(this, RECOVERY_DIALOG_REQUEST).show();
} else {
//String errorMessage = String.format(getString(R.string.error_player), errorReason.toString());
String errorMessage = "custom ERror MessAgE";
Toast.makeText(this, errorMessage, Toast.LENGTH_LONG).show();
}
}
#Override
public void onInitializationSuccess(YouTubePlayer.Provider arg0, YouTubePlayer player,
boolean wasRestored) {
// TODO Auto-generated method stub
if (!wasRestored) {
player.cueVideo("nCgQDjiotG0");
}
}
protected YouTubePlayer.Provider getYouTubePlayerProvider() {
// TODO Auto-generated method stub
return (YouTubePlayerFragment) getFragmentManager().findFragmentById(
R.id.youtube_fragment);
}
}
MainActivity.java
package androidsample.example.com.fragments2;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.youtube.player.YouTubePlayerFragment;
public class MainActivity extends YouTubeFailureRecoveryActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
YouTubePlayerFragment youTubePlayerFragment = (YouTubePlayerFragment) getFragmentManager()
.findFragmentById(R.id.youtube_fragment);
youTubePlayerFragment.initialize(DeveloperKey.DEVELOPER_KEY, this);
}
#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_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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity">
<fragment
android:id="#+id/youtube_fragment"
android:name="com.google.android.youtube.player.YouTubePlayerFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
I am working in Eclipse and struggling with a certain step in my assignment so any help would be appriciated because I actually dont know how to do it even though I realise how glaringly simple it probably is...
I have a shopping app and I have created my CheckoutActivity... now... it needs to start when the user clicks the checkout button in my CartActivity.
I need to add code in the ocCreate method of my CartActivity (which I will provide below) that specifies the listener for the Checkout button. then I need to define a button variable named btn inside the onCreate. I then need to assign the button element from the view using the id that you specified in my activity_cart.xml layout.
All I have so far is this... and I have no idea what to do...
btn.setOnClickListener(new OnClickListener() {
public void onClick(final View v) {
//I cant figure out how to get it to start the CheckoutActivity
}
});
Just in case you need to see the code I have so far... here is the code I have for my cartActivty
package uk.ac.uk.st265.shopper;
import java.text.DecimalFormat;
import java.util.List;
import java.util.ResourceBundle.Control;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.support.v4.app.NavUtils;
public class CartActivity extends Activity {
CartListAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cart);
TextView text = (TextView) findViewById(R.id.total_price); // its not in
// XML
DecimalFormat df = new DecimalFormat("#.00");
text.setText("£"
+ df.format(((ShopperApp) getApplication()).getCartTotal()));
adapter = new CartListAdapter(this);
ListView cartList = (ListView) findViewById(R.id.cart_list);
adapter.setItemList(((ShopperApp) getApplication()).cart);
cartList.setAdapter(adapter);
// Show the Up button in the action bar.
setupActionBar();
//work5ass2part6
//btn.setOnClickListener(new OnClickListener() {
//public void onClick(final View v) {
// I cant figure out how to get it to start the CheckoutActivity
//}
//});
}
/**
* Set up the {#link android.app.ActionBar}.
*/
private void setupActionBar() {
getActionBar().setDisplayHomeAsUpEnabled(true);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.cart, menu);
return true;
}
public class CartListAdapter extends BaseAdapter {
private final Context context;
private List<Product> itemList;
public CartListAdapter(Context c) {
context = c;
}
public void setItemList(List<Product> itemList) {
// this.itemList = itemList;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 0;
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View cell = convertView;
if (cell == null) {
// get layout from mobile xml
LayoutInflater inflater = ((Activity) context)
.getLayoutInflater();
cell = inflater.inflate(R.layout.adapter_cart, parent, false);
}
Product p = itemList.get(position);
// set value into text view according to position
TextView textView = (TextView) cell
.findViewById(R.id.product_title);
textView.setText(p.getProductName());
textView = (TextView) cell.findViewById(R.id.product_info);
textView.setText("Price " + p.getPrice());
// set value into image view according to position
ImageView imgView = (ImageView) cell
.findViewById(R.id.product_image);
// clear the image
imgView.setImageDrawable(null);
// and load from the network
p.loadImage(imgView, 54, 54);
return cell;
}
public List<Product> getItemList() {
return itemList;
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
// This ID represents the Home or Up button. In the case of this
// activity, the Up button is shown. Use NavUtils to allow users
// to navigate up one level in the application structure. For
// more details, see the Navigation pattern on Android Design:
//
// http://developer.android.com/design/patterns/navigation.html#up-vs-back
//
case R.id.show_cart:
// Create the intent for the cart activity
Intent intent = new Intent(getApplicationContext(),
CartActivity.class);
startActivity(intent);
NavUtils.navigateUpFromSameTask(this);
return true;
}
return super.onOptionsItemSelected(item);
}
}
and here is the code I have so far on my CheckoutActivity:
package uk.ac.uk.st265.shopper;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.app.NavUtils;
public class CheckoutActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_checkout);
// Show the Up button in the action bar.
setupActionBar();
}
/**
* Set up the {#link android.app.ActionBar}.
*/
private void setupActionBar() {
getActionBar().setDisplayHomeAsUpEnabled(true);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.checkout, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
// This ID represents the Home or Up button. In the case of this
// activity, the Up button is shown. Use NavUtils to allow users
// to navigate up one level in the application structure. For
// more details, see the Navigation pattern on Android Design:
//
// http://developer.android.com/design/patterns/navigation.html#up-vs-back
//
NavUtils.navigateUpFromSameTask(this);
return true;
}
return super.onOptionsItemSelected(item);
}
}
Intent myIntent = new Intent(CurrentActivity.this, NextActivity.class);
// myIntent.putExtra("key", value); //if you want to pass parameter
CurrentActivity.this.startActivity(myIntent);