I am making a game and I have an options page which turns the music on or off. I want to override the backbutton so that it goes back to the home page, you'll understand why when you see my code:
public class OptionsActivity extends Activity {
private boolean isMyServiceRunning(String serviceCanonicalClassName) {
ActivityManager manager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceCanonicalClassName.equals(service.service.getClassName())) {
return true;
}
}
return false;
}
Intent i; // Handles MyMusicService.java
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.options);
final TextView tSound = (TextView) findViewById(R.id.textView2);
final Button saveBtn = (Button) findViewById(R.id.optSaveBtn);
final Button tblBtn = (Button) findViewById(R.id.tableBtn);
i=new Intent(this, MyMusicService.class);
final ToggleButton soundOption = (ToggleButton) findViewById(R.id.soundPref);
boolean musicPlays = isMyServiceRunning(MyMusicService.class.getCanonicalName());
soundOption.setChecked(musicPlays);
if(musicPlays==true){
tSound.setText("On");
}
if(musicPlays==false) {
tSound.setText("Off");
}
soundOption.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on clicks to control sound being on and off.
if(soundOption.isChecked()) {
Toast.makeText(OptionsActivity.this, "Music on.", Toast.LENGTH_SHORT).show();
startService(i);
Intent i = new Intent(OptionsActivity.this, OptionsActivity.class);
startActivity(i);
}
else {
if(stopService(i)==true){
soundOption.setChecked(false);
stopService(i);
Toast.makeText(OptionsActivity.this, "Music off.", Toast.LENGTH_SHORT).show();
Intent i = new Intent(OptionsActivity.this, OptionsActivity.class);
startActivity(i);
}
}
}
});
tblBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent tblView = new Intent(OptionsActivity.this, SQLView.class);
startActivity(tblView);
}
});
saveBtn.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
switch (v.getId()){
case R.id.optSaveBtn: //Determine what will happen when the user presses the "Submit button".
boolean optionsWork = true;
try{
String sound = tSound.getText().toString();
optionsDB entry = new optionsDB(OptionsActivity.this); //Creating a new instance of MasterMind game
entry.open();
entry.createOptionEntry(sound); //Passing both strings
entry.close();
}catch (Exception e){ //Creating an error message if for some reason the app cannot transfer data to the Database.
Toast.makeText(OptionsActivity.this, "Error", Toast.LENGTH_SHORT).show();
}
finally { //Creating an AlertDialog box when the user presses the Submit button.
if (optionsWork){
Toast.makeText(OptionsActivity.this, "Settings Saved", Toast.LENGTH_SHORT).show();
}
}
break;
}
}
});
}
}
Any help would be fantastic thank you.
Update: Added this, still doesn't work:
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
// do something on back.
return true;
}
Intent i = new Intent(OptionsActivity.this, MainActivity.class);
startActivity(i);
return super.onKeyDown(keyCode, event);
}
Use the onBackPressed() function to override the action of the back button. Here's some sample code:
@Override
public void onBackPressed()
{
Intent intent = new Intent(this,ABC.class);
startActivity(intent);
}
Write the action you want inside the onBackPressed() function.
Override onKeyDown()
of Activity, here you can handle various keys or can Override onBackPresses()
too
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
// do something on back.
return true;
}
return super.onKeyDown(keyCode, event);
}
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