学步园

<span style="font-size:12px;">会不会觉得Android自带的菜单不好用？很多时候我们需要好看的设置菜单。在这里介绍一种经常用到的弹出菜单PopupMenu，它展开来是一行一行的选项，个人觉得美观又简洁。

<img src="http://img.blog.csdn.net/20141109004458828?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvQnJpYW50bWFj/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" height="428" width="327" alt="" />

</span>

首先在res文件夹下新建menu文件，新建main.xml

main.xml文件放的是你要展开的内容，这里简单列两项

<pre name="code" class="java"><span style="font-size:14px;"><menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/action_settings"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="哈哈"/>
     <item
        android:id="@+id/action_settings2"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="帅不"/>

</menu></span>

Activity里面只有一个按钮，点击之后展开Menu，要继承OnMenuItemClickListener。下面是简单示例

<span style="font-size:14px;">public class MainActivity extends Activity implements OnMenuItemClickListener {

	private Button btn;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		btn = (Button) findViewById(R.id.button1);

		btn.setOnClickListener(new View.OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO 自动生成的方法存根
				showPopupMenu(btn);
			}

		});
	}

	@SuppressLint("NewApi")
	private void showPopupMenu(View v) {
		// TODO 自动生成的方法存根
		 PopupMenu pop = new PopupMenu(this, v);
         pop.getMenuInflater().inflate(R.menu.main, pop.getMenu());
         pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
			
			@Override
			public boolean onMenuItemClick(MenuItem arg0) {
				// TODO 自动生成的方法存根
				switch (arg0.getItemId()) {
				case R.id.action_settings:
					showToast("哈哈");
					break;
				case R.id.action_settings2:
					showToast("帅不");
					break;
				default:
					break;
				}
				return false;
			}
		});
        pop.show();
	
	}

	public void showToast(String str) {

		Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
	}</span>