Code pour DetailActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_detail);
	if (savedInstanceState == null) {
		getSupportFragmentManager().beginTransaction()
				.add(R.id.container, new PlaceholderFragment())
				.commit();
	}
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
	// Inflate the menu; this adds items to the action bar if it is present.
	getMenuInflater().inflate(R.menu.detail, menu);
	return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
	// Handle action bar item clicks here. The action bar will
	// automatically handle clicks on the Home/Up button, so long
	// as you specify a parent activity in AndroidManifest.xml.
	int id = item.getItemId();

	//noinspection SimplifiableIfStatement
	if (id == R.id.action_settings) {
		return true;
	}

	return super.onOptionsItemSelected(item);
}

/**
 * A placeholder fragment containing a simple view.
 */
public static class PlaceholderFragment extends Fragment {

	public PlaceholderFragment() {
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
							 Bundle savedInstanceState) {

		View rootView = inflater.inflate(R.layout.fragment_detail, container, false);
		return rootView;
	}
}

Code pour activity_detail.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.nicolasbourre.b76.meteobourre.DetailActivity" tools:ignore="MergeRootFrame">
 <android.support.design.widget.AppBarLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/AppTheme.AppBarOverlay">
 <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" app:popupTheme="@style/AppTheme.PopupOverlay" />
 </android.support.design.widget.AppBarLayout>
</FrameLayout>