在Activity中增添选项菜单
在Activity中添加选项菜单
public class MainActivity extends Activity{ private static final int ITEM1 = Menu.FIRST; private static final int ITEM2 = Menu.FIRST+1; public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); //mian是activity的界面文件 } //重写 public boolean onCreateOptionsMenu(Menu menu){ menu.add(0,ITEM1,0,"开始"); menu.add(0,ITEM2,0,"退出"); } public boolean onOptionsItemSelected(MenuItem item){ switch(item.getItemId()){ case ITEM1: setTitle("开始"); break; case ITEM2: setTitle("退出"); break; } return true; } }