android-homebutton

I have a main activity having intent with CATEGORY_HOME to behave like a launcher. It also has CATEGORY_LAUNCHER so that user can access from App Drawer. Here is the main activity: public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } @Override protected void onResume() { super.onResume(); } @Override protected void onDestroy() { super.onDestroy(); } } I have another activity containing a button to call the MainActivity with HOME intent. It is another

I have a background Service which starts an activity, Intent i = new Intent(this, MyActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(i); After destroying this Activity and restart it over the "long press home key menu", this Activity starts again. But I want to start the main activity instead. How could I realise this? Could you explain in more detail? If I understand your problem try setting the FLAG_ACTIVITY_NO_HISTORY. Alternatively a manual solution would be to check the FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY on the intent in MyActivity and launch to the main activity

I have preference screen extended PreferenceActivity . For targeting OS 4.0.3, I wanted to add < icon on action bar so I did this in onCreate() . ActionBar actionBar = getActionBar(); actionBar.setHomeButtonEnabled(true); actionBar.setDisplayHomeAsUpEnabled(true); It worked. < was added to left of app icon. But when I tap the item which goes into the next level (more detail screen), the < won't be displayed. Returning to the top level, the < appears again. I have never thought about a mechanism of nested preference since smart the PreferenceActivity hides it. Now my question is, why won't