findViewByID(R.layout.skeleton_activity) returns null

Question

I am trying to register a context menu in a skeleton app's OnCreate():

/** Called with the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Inflate our UI from its XML layout description.
    setContentView(R.layout.skeleton_activity);

    View v = findViewById(R.layout.skeleton_activity);
    registerForContextMenu(v);      

    // Find the text editor view inside the layout, because we
    // want to do various programmatic things with it.
    mEditor = (EditText) findViewById(R.id.editor);

    // Hook up button presses to the appropriate event handler.
    ((Button) findViewById(R.id.back)).setOnClickListener(mBackListener);
    ((Button) findViewById(R.id.clear)).setOnClickListener(mClearListener);

    mEditor.setText(getText(R.string.main_label));
}

The debugger tells me that findViewById(R.layout.skeleton_activity) returns null.

@CommonsWare solution to a similar post is to Wait until onFinishInflate(). However, in the sample project he provides, it doesn't seem that he waits until onFinishInflate.

My questions:

1. Can registerForContextMenu() wait until onFinishInflate()?
2. If so, how do I do so?

Answer 1

This line is not correct its asking for id and you are providing layout

View v = findViewById(R.layout.skeleton_activity);

Instead if you want to have object of your root layout element then provide it some id and then try something like this

View v = findViewById(R.id.root_element);

Answer 2

I think you should use

View v = findViewById(R.id.skeleton_activity);

instead. For the 2nd question, sorry, I 've no idea. Hope to see someone else's answer.

Answer 3

You shouldn't need to wait for the content to inflate in an Activity.

One problem is that findViewById takes an ID (R.id....) when you provide it with a layout (R.layout...). Can you try the following instead, to reference the Activity's root view?

setContentView(R.layout.skeleton_activity);    
View content = findViewById(android.R.id.content);
registerForContextMenu(content);

Answer 4

i think the code you have shown is very confusing. Here is a good article http://blog.sptechnolab.com/2011/02/10/android/android-contextmenu-submenu/. In my case it works, i hope you can solve your problem.