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Previous button and next button

I have <> and <> buttons in my quiz app, but if the user is in the first question since there is no previous question there should be toast which says "this is the first question" and the same with <>button.
Here is my code for buttons (which is incorrect):
mNextButton = (Button)findViewById(R.id.next_button);
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mCurreentIndex=0;
if (mCurreentIndex>mQuestionBank.length){
Toast.makeText(QuizActivity.this,R.string.last_question,Toast.LENGTH_LONG).show();
}
updateQuestion();
}
});
mPreviousButton = (Button)findViewById(R.id.previous_button);
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mCurreentIndex--;
if (mCurreentIndex<mQuestionBank.length){
Toast.makeText(QuizActivity.this, R.string.first_question,Toast.LENGTH_LONG).show();
}
updateQuestion();
}
});

mNextButton = (Button)findViewById(R.id.next_button);
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//mCurreentIndex=0;// not valid
if (mCurreentIndex>=mQuestionBank.length){
Toast.makeText(QuizActivity.this,getString(R.string.last_question),Toast.LENGTH_LONG).show();
return;
}
mCurreentIndex++;
updateQuestion();
}
});
mPreviousButton = (Button)findViewById(R.id.previous_button);
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mCurreentIndex<=0){
Toast.makeText(QuizActivity.this, getString(R.string.first_question),Toast.LENGTH_LONG).show();
return;
}
mCurreentIndex--;
updateQuestion();
}
});

Try this
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mCurreentIndex<=0){
Toast.makeText(QuizActivity.this, R.string.first_question,Toast.LENGTH_LONG).show();
}else{
mCurreentIndex--;
updateQuestion();
}
}
});
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mCurreentIndex>=mQuestionBank.length){
Toast.makeText(QuizActivity.this,getString(R.string.last_question),Toast.LENGTH_LONG).show();
}else{
mCurreentIndex++;
updateQuestion();
}
}
});

You have just display toast message but next statement also execute after displaying toast. For your solution you need to use "return" or if..else block.
mNextButton = (Button)findViewById(R.id.next_button);
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mCurreentIndex=0;
if (mCurreentIndex>mQuestionBank.length){
Toast.makeText(QuizActivity.this,R.string.last_question,Toast.LENGTH_LONG).show();
return;
}
updateQuestion();
}
});
mPreviousButton = (Button)findViewById(R.id.previous_button);
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mCurreentIndex--;
if (mCurreentIndex<mQuestionBank.length){
Toast.makeText(QuizActivity.this, R.string.first_question,Toast.LENGTH_LONG).show();
return;
}
updateQuestion();
}
});

//Previous Button Condition;
mCurreentIndex--;
if (mCurreentIndex<mQuestionBank.length && mCurreentIndex>=0){
Toast.makeText(QuizActivity.this, R.string.first_question,Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(QuizActivity.this, "This is first question",Toast.LENGTH_LONG).show();
mCurreentIndex++;
}
//Next Button Condition;
mCurreentIndex++;
if (mCurreentIndex<mQuestionBank.length){
Toast.makeText(QuizActivity.this,R.string.last_question,Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(QuizActivity.this, "This is last Question",Toast.LENGTH_LONG).show();
mCurreentIndex--;
}

public class QuizActivity extends AppCompatActivity {
private static final String TAG = "QuizActivity";
private static final String KEY_INDEX = "index";
private Button mTrueButton;
private Button mFalseButton;
private Button mNextButton;
private Button mPreviousButton;
private TextView mQuestionTextView;
private Question[] mQuestionBank = new Question[]{
new Question(R.string.question_australia, true),
new Question(R.string.question_oceans, true),
new Question(R.string.question_mideast, false),
new Question(R.string.question_africa, false),
new Question(R.string.question_americas, true),
new Question(R.string.question_asia, true),
};
private int mCurreentIndex = 0;
private boolean[] QuestionsAnswered = new boolean[mQuestionBank.length];
#Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG,"onCreate(Bundle) called");
setContentView(R.layout.activity_quiz);
if (savedInstanceState != null) {
mCurreentIndex =savedInstanceState.getInt(KEY_INDEX, 0);
QuestionsAnswered = savedInstanceState.getBooleanArray(KEY_INDEX);
}
mQuestionTextView = (TextView)findViewById(R.id.question_text_view);
mTrueButton = (Button)findViewById(R.id.true_button);
mTrueButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
checkAnswer(true);
}
});
mFalseButton = (Button)findViewById(R.id.false_button);
mFalseButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
checkAnswer(false);
}
});
mNextButton = (Button)findViewById(R.id.next_button);
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mCurreentIndex = (mCurreentIndex+mQuestionBank.length +1) % mQuestionBank.length;
updateQuestion();
}
});
mPreviousButton = (Button)findViewById(R.id.previous_button);
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mCurreentIndex= (mCurreentIndex+ mQuestionBank.length - 1) % mQuestionBank.length;
updateQuestion();
}
});
updateQuestion();
}
#Override
protected void onStart() {
super.onStart();
Log.d(TAG, "onStart() called");
}
#Override
protected void onResume() {
super.onResume();
Log.d(TAG, "onResume() called");
}
#Override
protected void onPause() {
super.onPause();
Log.d(TAG, "onPause() called");
}
#Override
protected void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putInt(KEY_INDEX,mCurreentIndex);
savedInstanceState.putBooleanArray(KEY_INDEX,QuestionsAnswered);
}
#Override
protected void onStop() {
super.onStop();
Log.d(TAG, "onStop() called");
}
#Override
protected void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy() called");
}
private void updateQuestion(){
int question = mQuestionBank[mCurreentIndex].getTextResId();
mQuestionTextView.setText(question);
mTrueButton.setEnabled(!QuestionsAnswered[mCurreentIndex]);
mFalseButton.setEnabled(!QuestionsAnswered[mCurreentIndex]);
}
private void checkAnswer(boolean userPressedTrue) {
boolean answerIsTrue = mQuestionBank[mCurreentIndex].isAnswerTrue();
int messageResId = 0;
if (userPressedTrue == answerIsTrue) {
messageResId = R.string.correct_toast;
} else {
messageResId = R.string.incorrect_toast;
}
Toast.makeText(this, messageResId, Toast.LENGTH_LONG).show();
QuestionsAnswered[mCurreentIndex] = true;
mTrueButton.setEnabled(false);
mFalseButton.setEnabled(false);
}
}

App force closes after implementing media player

I programmed a quiz app there is one question, 3 choices, and ONE correct answer. Now I set up that on click on the right answer the MediaPlayer starts playing the sound. It worked fine but after I rebuilt the app forcecloses during splashscreen. Logcat says the error is the public void onClick(View view) under the FOR query.
Thanks for watching :D
public class QuizActivity extends AppCompatActivity {
private ActionBarDrawerToggle mToggle;
private QuestionLibrary mQuestionLibrary = new QuestionLibrary();
private TextView mScoreView;
private TextView mQuestionView;
private Button mButtonChoice1;
private Button mButtonChoice2;
private Button mButtonChoice3;
private String mAnswer;
private int mScore = 0;
private int mQuestionNumber = 0;
Dialog dialog;
TextView closeButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quiz);
final MediaPlayer mp = new MediaPlayer();
createDialog();
Button dialogButton = (Button) findViewById(R.id.dialogbtn);
dialogButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.show();
}
});
closeButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
TextView shareTextView = (TextView) findViewById(R.id.share);
shareTextView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent myIntent = new Intent(Intent.ACTION_SEND);
myIntent.setType("text/plain");
myIntent.putExtra(Intent.EXTRA_SUBJECT, "Hello!");
myIntent.putExtra(Intent.EXTRA_TEXT, "My highscore in Quizzi is very high! I bet you can't beat me except you are cleverer than me. Download the app now! https://play.google.com/store/apps/details?id=amapps.impossiblequiz");
startActivity(Intent.createChooser(myIntent, "Share with:"));
}
});
mQuestionLibrary.shuffle();
setSupportActionBar((Toolbar) findViewById(R.id.nav_action));
DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.open, R.string.close);
mDrawerLayout.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true); // Able to see the Navigation Burger "Button"
((NavigationView) findViewById(R.id.nv1)).setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.nav_stats:
startActivity(new Intent(QuizActivity.this, Menu2.class));
break;
case R.id.nav_about:
startActivity(new Intent(QuizActivity.this, Menu3.class));
break;
}
return true;
}
});
mScoreView = (TextView) findViewById(R.id.score_score);
mQuestionView = (TextView) findViewById(R.id.question);
mButtonChoice1 = (Button) findViewById(R.id.choice1);
mButtonChoice2 = (Button) findViewById(R.id.choice2);
mButtonChoice3 = (Button) findViewById(R.id.choice3);
final List<Button> choices = new ArrayList<>();
choices.add(mButtonChoice1);
choices.add(mButtonChoice2);
choices.add(mButtonChoice3);
updateQuestion();
for (final Button choice : choices) {
choice.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (choice.getText().equals(mAnswer)) {
try {
mp.reset();
AssetFileDescriptor afd;
afd = getAssets().openFd("sample.mp3");
mp.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength());
mp.prepare();
mp.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
updateScore();
updateQuestion();
Toast.makeText(QuizActivity.this, "Correct", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(QuizActivity.this, "Wrong... Try again!", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(QuizActivity.this, Menu2.class);
intent.putExtra("score", mScore); // pass score to Menu2
startActivity(intent);
}
}
});
}
}
private void updateQuestion() {
if (mQuestionNumber < mQuestionLibrary.getLength()) {
mQuestionView.setText(mQuestionLibrary.getQuestion(mQuestionNumber));
mButtonChoice1.setText(mQuestionLibrary.getChoice1(mQuestionNumber));
mButtonChoice2.setText(mQuestionLibrary.getChoice2(mQuestionNumber));
mButtonChoice3.setText(mQuestionLibrary.getChoice3(mQuestionNumber));
mAnswer = mQuestionLibrary.getCorrectAnswer(mQuestionNumber++);
} else {
Toast.makeText(QuizActivity.this, "Last Question! You are very intelligent!", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(QuizActivity.this, Menu2.class);
intent.putExtra("score", mScore);
startActivity(intent);
}
}
private void updateScore() {
mScoreView.setText(String.valueOf(++mScore));
SharedPreferences mypref = getPreferences(MODE_PRIVATE);
int highScore = mypref.getInt("highScore", 0);
if (mScore > highScore) {
SharedPreferences.Editor editor = mypref.edit();
editor.putInt("highScore", mScore);
editor.apply();
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
return mToggle.onOptionsItemSelected(item) || super.onOptionsItemSelected(item);
}
private void createDialog() {
dialog = new Dialog(this);
dialog.setTitle("Tutorial");
dialog.setContentView(R.layout.popup_menu1_1);
closeButton = (TextView) dialog.findViewById(R.id.closeTXT);
}
}

Try something like:
OnCreate{
mButtonChoice1 = (Button) findViewById(R.id.choice1);
mButtonChoice2 = (Button) findViewById(R.id.choice2);
mButtonChoice3 = (Button) findViewById(R.id.choice3);
mButtonChoice1.setOnClickListener(this);
mButtonChoice2.setOnClickListener(this);
mButtonChoice3.setOnClickListener(this);
}
public void onClick(View v) {
Button b = (Button)v;
String buttonText = b.getText().toString();
if(buttonText.equals(something)){
if (mp.isPlaying()) {
mp.stop();
mp.release();
mp = new MediaPlayer();
}
AssetFileDescriptor descriptor = getAssets().openFd("sample.mp3"");
mp.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength());
descriptor.close();
mp.prepare();
mp.start();
}
}

android mediaplayer pause not working

I have a problem with pausing a MediaPlayer. When I play it, and click the pause button it's working, but when it's playing longer than 10 seconds it's not pausing.
Here is my code:
private TextView tvState;
private MediaPlayer mediaPlayer = new MediaPlayer();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_player);
ImageButton btnPlay = (ImageButton) findViewById(R.id.btnPlay);
ImageButton btnPause = (ImageButton) findViewById(R.id.btnPause);
TextView tvAuthor = (TextView) findViewById(R.id.tvAuthor);
TextView tvSong = (TextView) findViewById(R.id.tvSong);
tvState = (TextView) findViewById(R.id.tvState);
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
String json = bundle.getString("songModel");
final SongModel songModel = new Gson().fromJson(json, SongModel.class);
tvAuthor.setText(songModel.getAuthor());
tvSong.setText(songModel.getName());
PrepareMediaPlayer(songModel);
}
btnPlay.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (!mediaPlayer.isPlaying()) {
mediaPlayer.start();
} else if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
if (mediaPlayer.isPlaying()) {
tvState.setText("Played");
}
}
});
btnPause.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();
}
if (!mediaPlayer.isPlaying()) {
tvState.setText("Paused");
}
}
});
}
public void PrepareMediaPlayer(SongModel song) {
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mediaPlayer.setDataSource(song.getLink());
} catch (IOException e) {
e.printStackTrace();
}
mediaPlayer.prepareAsync();
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
if (!mp.isPlaying()) {
mp.start();
}
}
});
mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
return false;
}
});
}
My OS: Android 4.0.4, API 15

android.widget.Button cannot be cast to android.widget.CheckBox

I'm getting the error from the title in my Android project. I have searched for similar issues, which had me checkboxes casting, which seems ok, and also to clean and rebuild the project, which it did not work.
The app is crashing when I click the "Register" Button after a register form that contains EditTexts (for username, email and password) and Checkboxes for the user to pick multiple items. What should I do next?
public class RegisterActivity extends Activity {
ArrayList<Sport> sports = new ArrayList<>();
ArrayList<Sport> selectedSports = new ArrayList<>();
private void initializeSports(){
String[] sportsArray = getResources().getStringArray(array.sportsName);
for (int i = 0; i < sportsArray.length; i++){
sports.add(new Sport(i + 1, sportsArray[i]));
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(layout.activity_register);
initializeSports();
final EditText etEmail = (EditText) findViewById(id.etEmail);
final EditText etUsername = (EditText) findViewById(id.etUsername);
final EditText etPassword = (EditText) findViewById(id.etPassword);
final Button bRegister = (Button) findViewById(id.bRegister);
final CheckBox cbSoccer = (CheckBox) findViewById(id.cbSoccer);
cbSoccer.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
final CheckBox cbFootball = (CheckBox) findViewById(id.cbFootball);
cbFootball.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
final CheckBox cbBasket = (CheckBox) findViewById(id.cbBasket);
cbBasket.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
final CheckBox cbTennis = (CheckBox) findViewById(id.cbTennis);
cbTennis.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
final CheckBox cbSwimming = (CheckBox) findViewById(id.cbSwimming);
cbSwimming.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
final CheckBox cbGym = (CheckBox) findViewById(id.cbGym);
cbGym.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
final CheckBox cbOther = (CheckBox) findViewById(id.cbOther);
cbOther.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
selectItem(v);
}
});
bRegister.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final String username = etUsername.getText().toString();
final String email = etEmail.getText().toString();
final String passcode = etPassword.getText().toString();
selectItem(v);
Response.Listener<String> responseListener = new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject jsonResponse = new JSONObject(response);
boolean success = jsonResponse.getBoolean("success");
if (success) {
Intent intent = new Intent(RegisterActivity.this, LoginActivity.class);
RegisterActivity.this.startActivity(intent);
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(RegisterActivity.this);
builder.setMessage("Register Failed")
.setNegativeButton("Retry", null)
.create()
.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
RegisterRequest registerRequest = new RegisterRequest(username, email, passcode, selectedSports, responseListener);
RequestQueue queue = Volley.newRequestQueue(RegisterActivity.this);
queue.add(registerRequest);
}
});
}
public void selectItem(View v){
boolean checked = ((CheckBox)v).isChecked();
switch(v.getId()){
case R.id.cbSoccer:
if(checked){
selectedSports.add(sports.get(0));
} else{
selectedSports.remove(sports.get(0));
} break;
case R.id.cbFootball:
if(checked){
selectedSports.add(sports.get(1));
} else{
selectedSports.remove(sports.get(1));
} break;
case R.id.cbTennis:
if(checked){
selectedSports.add(sports.get(2));
} else{
selectedSports.remove(sports.get(2));
} break;
case R.id.cbSwimming:
if(checked){
selectedSports.add(sports.get(3));
} else{
selectedSports.remove(sports.get(3));
} break;
case R.id.cbGym:
if(checked){
selectedSports.add(sports.get(4));
} else{
selectedSports.remove(sports.get(4));
} break;
case R.id.cbBasket:
if(checked){
selectedSports.add(sports.get(5));
} else{
selectedSports.remove(sports.get(5));
} break;
case R.id.cbOther:
if(checked){
selectedSports.add(sports.get(6));
} else{
selectedSports.remove(sports.get(6));
} break;
}
}
}

You are casting the view to CheckBox in your selectItem(v) method and in your listener
bRegister.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
selectItem(v);
}
});
You are passing the View v, i.e, the clicked button, so the button can not be casted to CheckBox.
Remove this line from listener
selectItem(v);
and it will be alright.

In the selectItem(v) method the view passed to the method is an instance of Button since it is written in the onClickListener of button
If you want to do the same first make a check in selectItem(View v) method
if(v instanceof CheckBox) {
boolean checked = ((CheckBox)v).isChecked();
}
Then proceed with the rest of code

Bluetooth sending data

Im new at android development. I'm developing an app where first of all, I have a main activity where I must turn On/Off the bluetooth, make it discoverable, search devices and connect to them.
After this, I go to other activity where I have a text view with a edittext and a send button, where I can write something and send it.
I've got working all the bluetooth enabling/disabling stuff, but now I need to connect to new found devices and then enter to the chat type activity and send.
I now this is pretty much work, but it would be great if you can give me an example of how can I do this. This is the code i have:
public class BTActivity extends Activity {
// Intent request codes
private static final int REQUEST_DISCOVERABLE_BT = 0;
private static final int REQUEST_CONNECT_DEVICE = 1;
private static final int REQUEST_ENABLE_BT = 2;
// Debugging
private static final String TAG = "BluetoothChat";
private static final boolean D = true;
// Name of the connected device
public static String mConnectedDeviceName = null;
// Array adapter for device list
private ArrayAdapter<String> mArrayAdapter;
// Local Bluetooth adapter
private BluetoothAdapter mBluetoothAdapter = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final Button button1 = (Button) findViewById(R.id.boton1);
final Button button2 = (Button) findViewById(R.id.boton2);
final Button button3 = (Button) findViewById(R.id.boton3);
final Button button4 = (Button) findViewById(R.id.boton4);
final Button button5 = (Button) findViewById(R.id.boton5);
button5.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
lanzarComunicacion (null);
}
});
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
finish();
return;
}
button3.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
}
});
button2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//LLAMA A LA DIALOG ACTIVITY PARA VISUALIZAR LOS DISPOSITIVOS
LanzarBusqueda(null);
}
});
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (!mBluetoothAdapter.isDiscovering()) {
Context context = getApplicationContext();
CharSequence text = "MAKING YOUR DEVICE DISCOVERABLE";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
}
}
});
button4.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mBluetoothAdapter.disable();
Context context = getApplicationContext();
CharSequence text = "TURNING_OFF BLUETOOTH";
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, 15);
toast.show();
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CONNECT_DEVICE:
if (resultCode == Activity.RESULT_OK) {
connectDevice(data);
}
}
}
private void connectDevice(Intent data) {
String address = data.getExtras().getString(DeviceListDialog.EXTRA_DEVICE_ADDRESS);
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
BTCommunication.mChatService.connect(device);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.bt, menu);
return true;
}
public void lanzarComunicacion (View view) {
Intent i = new Intent(this, BTCommunication.class);
startActivity(i);
}
public void LanzarBusqueda (View view) {
Intent i = new Intent(this, DeviceListDialog.class);
startActivity(i);
}
}