android 通过 button 弹出menu

一android 通过 button 弹出 option menu：

public class TestOptionsMenu extends Activity implements OnClickListener{    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                        Button bt = (Button)findViewById(R.id.Button01);                bt.setOnClickListener(this);     } @Override public boolean onCreateOptionsMenu(Menu menu) {    menu.add(0, 0, 0, "test");  return super.onCreateOptionsMenu(menu); } @Override public void openOptionsMenu() {  // TODO Auto-generated method stub  super.openOptionsMenu(); } @Override public void onClick(View v) {  int id = v.getId();  switch(id){  case R.id.Button01:   openOptionsMenu(); //这里可以直接通过button调出按键menu的菜单   break;  }   }      }

二，android 通过 button 弹出 context menu

1，获取button ： Button bt = (Button)findViewById(R.id.Button01);

2，设置button 事件:

bt.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {                  public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {                  menu.setHeaderTitle("title");                       menu.add(0, 1, 0, "item 1");                    menu.add(0, 2, 0, "item 2");                }            });

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