a_sid的博客

布局文件代码<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="ma

public class MainActivity extends Activity { private ImageView imageView; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView

点击手机的菜单按钮会弹出菜单public class MainActivity extends Activity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_