设置菜单

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
menu.add(1,1,1,"关于");
menu.add(2,2,2,"退出");

return true;//加菜单
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{//菜单事件

if(item.getItemId()==1){
Toast.makeText(MainActivity.this,"坤少",Toast.LENGTH_SHORT).show();

}else if(item.getItemId()==2)
{
this.finish();
}

return false;
}

}