[安卓开发基础] 10.19 选项菜单
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1.在res 路径下 ---new----Directory ---menu:
2. main_menu.xml 添加菜单 item 项:
<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/message" android:title="消息"></item> <item android:id="@+id/homepage" android:title="首页"></item> <item android:id="@+id/help" android:title="帮助"></item> <item android:id="@+id/feedback" android:title="我的反馈"></item> </menu>
3.Activity 重写方法:
@Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater menuInflater =new MenuInflater(this); menuInflater.inflate(R.menu.main_menu,menu); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()){ case R.id.message: Toast.makeText(this,"你选择了 1",Toast.LENGTH_SHORT).show(); break; case R.id.homepage: Toast.makeText(this,"你选择了 2",Toast.LENGTH_SHORT).show(); break; } return super.onOptionsItemSelected(item); }