我创建了一个BaseActivity,并重写了setContentView,这是BaseActivity代码
public class BaseActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public void setContentView(int layoutResID)
{
DrawerLayout fullView = (DrawerLayout) getLayoutInflater().inflate(R.layout.activity_base, null);
FrameLayout activityContainer = (FrameLayout) fullView.findViewById(R.id.activity_content);
getLayoutInflater().inflate(layoutResID, activityContainer, true);
super.setContentView(fullView);
}
@Override
public boolean onNavigationItemSelected(MenuItem item) {
Log.i("NAV","nav selected");
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.activity_container);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
并且BaseActivity的xml就像这样
<android.support.v4.widget.DrawerLayout
android:id="@+id/activity_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:id="@+id/activity_content"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="@+id/navigationView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="@menu/activity_side_menu_drawer"/>
</android.support.v4.widget.DrawerLayout>
在MainActivity上我像这样扩展了这个
public class MainActivity extends BaseActivity{
}
实际上导航显示效果不错,但onNavigationItemSelected无效!!
我试图记录或Toast没有任何工作 怎么了?
提前感谢。
答案 0 :(得分:0)
您需要致电setNavigationItemSelectedListener
。
需要在NavigationView
首先通过NavigationView
findViewById(R.id.navigationView)
最后致电navigationView.setNavigationItemSelectedListener(this)
这将告诉您的导航视图,所选项目的监听器是BaseActivity