MainActivity.java

package github.nisrulz.sample.translucentstatusbar;

import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.View;

public class MainActivity extends AppCompatActivity {

  @Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Setup this flag to enable making image extend into status bar
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
      getWindow().getDecorView()
          .setSystemUiVisibility(
              View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
    }

    setContentView(R.layout.activity_main);

    // Find the toolbar view inside the activity layout
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    // Sets the Toolbar to act as the ActionBar for this Activity window.
    // Make sure the toolbar exists in the activity and is not null
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
  }

  @Override public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.main_menu, menu);

    return super.onCreateOptionsMenu(menu);
  }
}