java - onDrawerClosed 和 onDrawerOpened 未被调用

Question

我正在玩 DrawerListener ，不幸的是官方文档不是很详细，并不是说没有给出任何示例。

我想要测试的只是在抽屉关闭时显示 Toast 消息，但它并没有发生，根本没有被调用，有什么想法吗？代码下方

public class MainActivity extends ActionBarActivity implements DrawerLayout.DrawerListener {

  DrawerLayout.DrawerListener mele;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final DrawerLayout olia=(DrawerLayout)findViewById(R.id.container);

    ListView meka=(ListView)findViewById(R.id.left_drawer);

    String [] karo={"meka","deka","beka"};

    ArrayAdapter<String> mera=new ArrayAdapter<String>     ( this,android.R.layout.simple_list_item_1,karo);  

    meka.setAdapter(mera);

     olia.setDrawerListener(mele);      


    meka.setOnItemClickListener(new OnItemClickListener () {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub


              olia.closeDrawers();
        }



    });





}

@Override
public void onDrawerClosed(View arg0) {
    // TODO Auto-generated method stub


    Toast.makeText(MainActivity.this, "OK Opened", Toast.LENGTH_LONG).show();
    Log.d("meke", "CLOSED  DRAWER" );
}

Answer 1

试试 olia.setDrawerListener(this)