Getsupportactionbar() The Method Getsupportactionbar() Is Undefined For The Type Taskactivity. Why?

I was recommended to extend my Activity class from ActionBarActivity Here is the previous code: import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActi

Solution 1:

Your class needs to extend from ActionBarActivity, rather than a plain Activity in order to use the getSupport*() methods.

Update [2015/04/23]: With the release of Android Support Library 22.1, you should now extend AppCompatActivity. Also, you no longer have to extend ActionBarActivity or AppCompatActivity, as you can now incorporate an AppCompatDelegate instance in any activity.

Solution 2:

Here is another solution you could have used. It is working in my app.

@OverridepublicvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        android.support.v7.app.ActionBaractionBar=getSupportActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);            
        setContentView(R.layout.activity_main)

Then you can get rid of that import for the one line ActionBar use.

Solution 3:

If you are already extending from ActionBarActivity and you are trying to get the action bar from a fragment:

ActionBarmActionBar= (ActionBarActivity)getActivity()).getSupportActionBar();

Solution 4:

Here is the answer of my question. I've asked that again with some remarks. How to add support libraries?

Solution 5:

If you are extending from an AppCompatActivity and are trying to get the ActionBar from the Fragment, you can do this:

ActionBarmActionBar= ((AppCompatActivity) getActivity()).getSupportActionBar();