I'am new to Android Studio, here is my problem, i used some other solutions but they were not useful. i don't know what is the problem with that.
Code is given below,
public class SignUpActivity extends AppCompatActivity {
EditText etName;
EditText etEmail;
EditText etPass;
RadioButton radioButton1;
RadioButton radioButton2;
RadioGroup radioGroup;
Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_up);
Button sgButton = findViewById(R.id.sgButton);
etEmail = findViewById(R.id.input_Email);
etPass = findViewById(R.id.input_password);
etName = findViewById(R.id.inputName);
radioButton1 = findViewById(R.id.f);
radioButton2 = findViewById(R.id.m);
radioGroup = findViewById(R.id.radioGroup);
sgButton.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
final String name = etName.getText().toString();
final String email = etEmail.getText().toString();
final String pass = etPass.getText().toString();
Toast toast = Toast.makeText(SignUpActivity.this,
"Crunch you felt it", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER_HORIZONTAL,0,0);
toast.show(); // here is the Code for Toast.
}
}
);
}
}
Any help will be appreciated.
Related
I have three spinners in my activity. So I have to open specific activity based on the input of three spinners; if I have entered "1" in my first spinner "cse" in my second spinner and "b" in my third spinner I have to open the respected activity and so on for different combinations.
I have tried using if statements and the app is crashing every time since.
Please beware of the comments in the code those are the codes which I have tried and didn't get any result.
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener{
private Button btn;
/*TextView selection1;
TextView selection2;
TextView selection3;*/
Spinner spin1;
Spinner spin2;
Spinner spin3;
String[] years = {"1","2","3","4"};
String[] branches = {"CSE","ECE","EEE","CIVIL","IT","MECH"};
String[] sections = {"A","B","C"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Spinner spin1 = (Spinner) findViewById(R.id.spinner1);
spin1.setOnItemSelectedListener(this);
/*List<String> branches = new ArrayList<String>();
branches.add("CSE");
branches.add("ECE");
branches.add("IT");
branches.add("MECH");
branches.add("CIVIL");
branches.add("EEE");*/
ArrayAdapter<String> dataAdapter =new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,years);
//Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//attaching dataAdapter to spinner
spin1.setAdapter(dataAdapter);
Spinner spin2 = (Spinner) findViewById(R.id.spinner2);
spin2.setOnItemSelectedListener(this);
ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,branches);
dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spin2.setAdapter(dataAdapter2);
Spinner spin3 = (Spinner) findViewById(R.id.spinner3);
spin3.setOnItemSelectedListener(this);
ArrayAdapter<String> dataAdapter3 = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,sections);
dataAdapter3.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spin3.setAdapter(dataAdapter3);
Button btn= (Button) findViewById(R.id.display);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
displaycheck();
}
});
}
public void displaycheck(){
/*Spinner s1 = (Spinner)findViewById(R.id.spinner1);
Spinner s2 = (Spinner)findViewById(R.id.spinner2);
Spinner s3 = (Spinner)findViewById(R.id.spinner3);
String sp1 = s1.getPrompt().toString();
String sp2 = s2.getPrompt().toString();
String sp3 = s3.getPrompt().toString();
if (sp1.equals("3")&&sp2.equals("CSE")&&sp3.equals("B")){*/
Toast.makeText(this, "Welcome", Toast.LENGTH_LONG).show();
Intent it = new Intent(this,M2.class);
startActivity(it);
//}
/*else{
Toast.makeText(this, "Invalid input", Toast.LENGTH_LONG).show();
}*/
}
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//on selecting a spinner item
String item = parent.getItemAtPosition(position).toString();
/*if (spin1.getSelectedItem().toString().equals("3")) {
if (spin2.getSelectedItem().toString().equals("CSE")) {
if (spin3.getSelectedItem().toString().equals("B")) {*/
Toast.makeText(parent.getContext(), "Selected: " + item, Toast.LENGTH_LONG).show();
/*Intent it = new Intent(this, M2.class);
startActivity(it);*/
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
/*Button btn =(Button)findViewById(R.id.display);
btn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
displaycheck();
}
}
);
}
public void displaycheck(){
Spinner s1 =(Spinner) findViewById(R.id.spinner1);
Spinner s2 = (Spinner) findViewById(R.id.spinner2);
Spinner s3 = (Spinner) findViewById(R.id.spinner3);
String ye = y.getText().toString();
String br = b.getText().toString();
String se = s.getText().toString();
if (ye.equals("3")&&br.equals("cse")&&se.equals("b")) {
Toast.makeText(this, "ra ra ", Toast.LENGTH_LONG).show();
Intent it = new Intent(this, M2.class);
startActivity(it);
}
else{
Toast.makeText(this, "po po", Toast.LENGTH_LONG).show();
}
}*/
}
You are not giving value to variable which are global - Activity Scope - spin1, spin2, spin3.
Instead your are giving value to onCreate or Method specific scope; when you're fetching value from it it's never initialized.
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener{
private Button btn;
Spinner spin1;
Spinner spin2;
Spinner spin3;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get spinner in variable
spin1 = (Spinner) findViewById(R.id.spinner1);
...
// Your adapter, ItemListener, DropDownViewResource
spin2 = (Spinner) findViewById(R.id.spinner2);
... // Your adapter, ItemListener, DropDownViewResource
spin3 = (Spinner) findViewById(R.id.spinner3);
... // Your adapter, ItemListener, DropDownViewResource
Button btn= (Button) findViewById(R.id.display);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
displaycheck();
}
});
}
public void displaycheck(){
String sp1 = spin1.getSelectedItem().toString();
String sp2 = spin2.getSelectedItem().toString();
String sp3 = spin3.getSelectedItem().toString();
// Your combinations check
if (sp1.equals("3")&&sp2.equals("CSE")&&sp3.equals("B")){
// based on combination - redirect user
}
}
}
To get selected item from spinner you use this
String value1 = s1.getSelectedItem().toString();
String value2 = s2.getSelectedItem().toString();
String value3 = s3.getSelectedItem().toString();
Now you can check the values with any logic for example:
if(value1.equals("a") && value2.equals("cse") && value3.equals("b"))
openActivityCodeHere();
public class JobSignup extends AppCompatActivity {
private Button btn;
private ImageView imageview;
private static final String IMAGE_DIRECTORY = "/demonuts";
private int GALLERY = 1, CAMERA = 2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_job_signup);
FirebaseDatabase database = FirebaseDatabase.getInstance();
final DatabaseReference myRef = database.getReferenceFromUrl("https://rozgarinepal100.firebaseio.com/");
final TextView userName = (TextView) findViewById(R.id.userName);
final EditText writeName = (EditText) findViewById(R.id.writeName);
ImageButton sendDataToFirebase = (ImageButton) findViewById(R.id.sendDataToFirebase);
final TextView dateOfBirth = (TextView) findViewById(R.id.dateOfBirth);
final EditText enterDateOfBirth = (EditText) findViewById(R.id.enterDateOfBirth);
if ( writeName.getText().toString().length() == 0)
{
writeName.setError("Username Compulsory");
}
// if( TextUtils.isEmpty(writeName.getText())) {
// /**
// * You can Toast a message here that the Username is Empty
// **/
//
// writeName.setError("First name is required!");
//
// }
sendDataToFirebase.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
myRef.child("0").child(userName.getText().toString()).setValue(writeName.getText().toString());
//myRef.child("NAME:").setValue("Kathmandu University");
myRef.child("0").child(dateOfBirth.getText().toString()).setValue(enterDateOfBirth.getText().toString());
}
});
}
public void onClick(View v) {
Intent i = new Intent(this, HomeActivity.class);
startActivity(i);
}
}
My code is running fine and database is also saved on click but on click it is not going to the next class using intent.Here in the onclick listener function i have added link for database when the button is clicked on android.Database is running fine on click operation but i am not able to go the next class which i have created.I have the only problem to go the next class when the same button is clicked.I am trying to enable the database and goto the next class using same button.
Try this, It will work...
sendDataToFirebase.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
myRef.child("0").child(userName.getText().toString()).setValue(writeName.getText().toString());
//myRef.child("NAME:").setValue("Kathmandu University");
myRef.child("0").child(dateOfBirth.getText().toString()).setValue(enterDateOfBirth.getText().toString());
Intent i = new Intent(JobSignup.this, HomeActivity.class);
startActivity(i);
}
});
I am doing this project, can anyone help me to delete individual elements from the text view?enter image description here
here's i implemented the 'button' to insert and 'button2' to delete, and here's the code down bellow
public class MainActivity extends Activity {
private EditText editText;
private Button button;
private TextView textView;
private static final String TAG = "MainActivity";
// To hold all data in different mode : Portrait and landscape
private final String text_context = "TX";
#Override
protected void onCreate(Bundle savedInstanceState) {
Log.d(TAG, "onCreate: in");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = (EditText)findViewById(R.id.editText);
button = (Button)findViewById(R.id.button);
textView = (TextView)findViewById((R.id.textView));
textView.setText(""); // make it no text at runtime, but text at view
textView.setMovementMethod(new ScrollingMovementMethod()); // make it scrolling
editText.setText("");
final View.OnClickListener onClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
String result = editText.getText().toString();
result += "\n";
textView.append(result);
editText.setText(""); // text on EDITTEXT will disappear as soon as we click the button
}
};
final View.OnClickListener onClickListener1 = new View.OnClickListener() {
#Override
public void onClick(View view) {
}
};
if(editText != null)
button.setOnClickListener(onClickListener);
Log.d(TAG, "onCreate:out");
}
}
Please help me TO IMPLEMENT DELETE ACTION VIA BUTTON2....
Right now your onclick listeners are generically listening for clicks on any view.
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Handle button events
}
});
button2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Handle button2 events
}
});
Or better yet implement View.OnClickListener() on your activity
Use regex
String input = editText.getText().toString();
String regex = "\\b" + input + "\\b";
String tvText = textView.getText().toString();
tvText = tvText.replaceAll(regex, "");
textView.setText(tvText);
Put this code in
final View.OnClickListener onClickListener1 = new View.OnClickListener() {
#Override
public void onClick(View view) {
//code goes here
}
};
if(editText != null)
// add this onclick to your button2
button2.setOnClickListener(onClickListener1);
Log.d(TAG, "onCreate:out");
}
I like to save and disable a button, after I use the button (the code line below):
btn1.setEnabled(false);
I already know that I must use SharedPreferences, but I still need help with the code. I have already tried a lot but without success. Thats my Code.
public class Pass extends AppCompatActivity implements View.OnClickListener {
private Button btn1;
private EditText text1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pass);
btn1 = (Button) findViewById(R.id.button);
btn1.setOnClickListener(this);
text1 = (EditText) findViewById(R.id.editText);
text1.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
}
public void onClick (View view){
if (text1.getText().toString().equals("Pass)){
AlertDialog ad = new AlertDialog.Builder(this).create();
ad.setMessage("Super");
ad.show();
Intent intent = new Intent(this,Popup.class);
startActivity(intent);
btn1.setEnabled(false);
}else{
String message = "Leider falsch";
Toast.makeText(this,message, Toast.LENGTH_LONG).show();
}
}
}
Thanks for help
public class Pass extends AppCompatActivity implements View.OnClickListener
{
private Button btn1;
private EditText text1;
private SharedPreferences sharefPref;
private SharedPreferences.Editor editor;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pass);
btn1 = (Button) findViewById(R.id.button);
btn1.setOnClickListener(this);
text1 = (EditText) findViewById(R.id.editText);
text1.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
editor = sharedPref.edit();
}
public void onClick (View view){
if(sharedPref.getBoolean("YourKey"),true)
{
editor.putBoolean("YourKey",false);
editor.commit();
if (text1.getText().toString().equals("Pass)){
AlertDialog ad = new AlertDialog.Builder(this).create();
ad.setMessage("Super");
ad.show();
Intent intent = new Intent(this,Popup.class);
startActivity(intent);
}else{
String message = "Leider falsch";
Toast.makeText(this,message, Toast.LENGTH_LONG).show();
}
}
}
}
I have search a lot in different sites to solve this problem but I can't till now.
I have a simple app with 50 articles, two buttons, previous and next.
All works fine till the last article 50 where the problem is that the user can't choose the previous button 49, only can load from the beginning.
Here is my code: MainActivity.java
public class MainActivity extends AppCompatActivity {
private TextView meditCenterText;
private Button mStartButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
meditCenterText = (TextView) findViewById(R.id.editCenterText);
mStartButton = (Button) findViewById(R.id.startButton);
meditCenterText.setMovementMethod(new ScrollingMovementMethod());
mStartButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String TextView = meditCenterText.getText().toString();
startStory(TextView);
}
});
}
private void startStory(String TextView) {
Intent intent = new Intent(this, StoryActivity.class);
intent.putExtra("TextView", TextView);
startActivity(intent);
}
#Override
protected void onResume() {
super.onResume();
meditCenterText.setText("..... ");
}}
StoryActivity.java
public class StoryActivity extends AppCompatActivity {
public static final String TAG = StoryActivity.class.getSimpleName();
private Story mStory = new Story();
private ImageView mImageView;
private TextView mTextView;
private Page mCurrentPage;
private String mName;
private Button mPreviousButton;
private Button mNextButton;
private ScrollView mScrollView;
private Button mStartButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_story2);
//Intent intent = getIntent();
//mName = intent.getStringExtra(getString(R.string.key_name));
if(mName == null){
mName = "";
}
Log.d(TAG, mName);
mImageView = (ImageView)findViewById(R.id.storyImageView);
mTextView = (TextView)findViewById(R.id.storyTextView);
mPreviousButton = (Button)findViewById(R.id.previousButton);
mNextButton = (Button)findViewById(R.id.nextButton);
mTextView.setMovementMethod(new ScrollingMovementMethod());
loadPage(0);
}
private void loadPage(int choice){
mCurrentPage = mStory.getPage(choice);
Drawable drawable = getResources().getDrawable(mCurrentPage.getImageId());
mImageView.setImageDrawable(drawable);
String pageText = mCurrentPage.getText();
//add the name if placeholder included.
//pageText = String.format(pageText,mName);
mTextView.setText(pageText);
if(mCurrentPage.isSingle()){
mPreviousButton.setVisibility(View.VISIBLE);
mNextButton.setText("Start From The Beginning");
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mPreviousButton.setVisibility(View.VISIBLE);
loadPage(0);
}
});
}else{
mPreviousButton.setText(mCurrentPage.getChoices().getText1());
mNextButton.setText(mCurrentPage.getChoices().getText2());
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int previousPage = mCurrentPage.getChoices().getPreviousPage();
loadPage(previousPage);
}
});
mNextButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
int nextPage = mCurrentPage.getChoices().getNextPage();
loadPage(nextPage);
}
});
}}
}
Thanks for help.
It's probably the logic in your Page class. Have a proper look at it, otherwise from the android side everything is alright. One last thing, you should probably use a ViewPager for your app instead of changing the text every time you load a new oage