oncreate

Here's my code in LoginActivity: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); if (savedInstanceState == null) { getSupportFragmentManager().beginTransaction() .add(R.id.container, new PlaceholderFragment()).commit(); } loginButton = (Button)findViewById(R.id.loginButton); loginButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { onLoginButtonClicked(); } }); // Check if there is a currently logged in user // and they are linked to a Facebook account.

I am in the process of making my first app for Android, and I have a Fragment that gets added to my Activity in the Activity 's onCreate() method. The problem I am facing is that I am unable to find any of the views contained within the Fragment from the Activity 's onCreate() method. Other threads have suggested that this is because the Fragment has not yet been inflated, so findViewById() will return null for any views contained within the Fragment . Here is what I mean: Activity: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); System.out

In my Android application, I have a DefaultApplication class which extends android.app.Application , and in its onCreate() I bind some services which will be used by my other Activities in this app. Also I have a BroadcastReceiver which listens and receives C2DM Messages. When this receiver receives a message when the application is not running, it will fire a dialog which shows the upcoming message and it will start an Activity of my application. My question is, when I start an activity without any interaction with DefaultApplication , will my DefaultApplication 's onCreate() get called

I am new to android trying to understand what the below method does public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // load the layout setContentView(R.layout.filters); } My research :: onCreate is used to start an activity super is used to call the parent class constructor setContentView is used to set the xml But what is this all together - onCreate(Bundle savedInstanceState) .... why did that bundle come there, what is it What is that super.onCreate(savedInstanceState); some explanation in layman terms would be helpful vinaykumar If you save the state

I would like to finish an activity from inside the onCreate method. When I call finish() , onDestroy() is not immediately called, the code keeps flowing past finish() . onDestroy() isn't called until after the onCreate() closing brace. Per the onCreate() description at developer.android.com/reference. You can call finish() from within this function, in which case onDestroy() will be immediately called without any of the rest of the activity lifecycle (onStart(), onResume(), onPause(), etc) executing. Reason I ask is: I would like to check data from the Bundle passed to onCreate() . Of course I