The application icon does not show on action bar

Question

I followed up the instructions of building a new android project and I got a runnable one except a problem with action bar. The problem is that the application icon is not s

Answer 1

This is a common "problem".Before you pull your hairs out make sure you are using:

import android.support.v7.app.ActionBar; //or the v4, haven't tried with that though

and not:

import android.app.ActionBar;

and then:

ActionBar actionBar;
actionBar = getSupportActionBar();

instead of:

actionBar = getActionBar();

And finally:

if (actionBar != null) {
        // enabling action bar app icon and behaving it as toggle button           
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setIcon(R.drawable.your_icon);
        actionBar.setHomeButtonEnabled(true);
        actionBar.setDisplayShowHomeEnabled(true);
    }