Android學習筆記之PopupMenu快顯功能表，androidpopupmenu

Android學習筆記之PopupMenu快顯功能表，androidpopupmenu

（1）布局檔案：用於快顯功能表的處罰button：

<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="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginLeft="96dp"        android:layout_marginTop="111dp"        android:onClick="showPopup"        android:text="快顯功能表" /></RelativeLayout>

（2）res-menu目錄下的main.xml檔案：

<menu xmlns:android="http://schemas.android.com/apk/res/android" >    <item        android:id="@+id/open"        android:orderInCategory="100"        android:showAsAction="never"        android:title="@string/open"/>    <item        android:id="@+id/close"        android:orderInCategory="100"        android:showAsAction="never"        android:title="@string/close"/></menu>

（3）類的檔案：

package com.example.menu_popupmenu;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.Button;import android.widget.PopupMenu;public class MainActivity extends Activity {private Button button;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void showPopup(View view) {PopupMenu popupMenu = new PopupMenu(MainActivity.this, view);popupMenu.getMenuInflater().inflate(R.menu.main, popupMenu.getMenu());popupMenu.show();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}