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I need to do something in an Activity after all the layout methods have been called, all the Views are in place and the Activity is ready to be displayed.
Which method can do that?
600
As onCreate() of an Activity is called only once, this is the point where most initialization should go: calling setContentView(int) to inflate the activity's UI, using findViewById to programmatically interact with widgets in the UI, calling managedQuery(android.
onCreate(savedInstanceState); setContentView(R. layout. main2); DataClass dc = new DataClass(); dc. show(); } public void call(ArrayList<String> arr) { // Some code... } }
SetContentView is used to fill the window with the UI provided from layout file incase of setContentView(R. layout. somae_file). Here layoutfile is inflated to view and added to the Activity context(Window).
You must call the second activity using the startActivityForResult method. In your second activity, when it is finished, you can execute the setResult method where basically you put the result information. Then, on your first activity, you override the onActivityResult method.
If you are trying to get a width of a view or something. This should work
Add this to your activity's onCreate
ViewTreeObserver vto = layout.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
// Put your code here.
layout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
});
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