Android中PopupWindow的使用

    public class PopUpActivity extends Activity {

        /* Called when the activity is first created. /

        @Override

        public void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);

            LayoutInflater inflater = LayoutInflater.from(this);

            // 引入窗口配置文件

            View view = inflater.inflate(R.layout.main2, null);

            // 創建PopupWindow對象

            final PopupWindow pop = new PopupWindow(view, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, false);

            Button btn = (Button) findViewById(R.id.btn);

            // 需要設置一下此參數，點擊外邊可消失

            pop.setBackgroundDrawable(new BitmapDrawable());

            //設置點擊窗口外邊窗口消失

            pop.setOutsideTouchable(true);

            // 設置此參數獲得焦點，否則無法點擊

            pop.setFocusable(true);

            btn.setOnClickListener(new OnClickListener() {


            @Override  
            public void onClick(View v) {  
                if(pop.isShowing()) {  
                    // 隱藏窗口，如果設置了點擊窗口外小時即不需要此方式隱藏  
                    pop.dismiss();  
                } else {  
                    // 顯示窗口  
                    pop.showAsDropDown(v);  
                }  

            }  
        });  
    }  
}  </pre> <p>main.xml<pre class="brush:xml; toolbar: true; auto-links: false;">    <?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"  
    android:orientation="vertical" >  

    <Button  
        android:id="@+id/btn"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="dianji" />  

</LinearLayout>  </pre>main2.xml<pre class="brush:xml; toolbar: true; auto-links: false;">    <?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"  
    android:orientation="vertical" >  

    <Button  
        android:id="@+id/a"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="AAAAA" />  

    <Button  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="BBBBB" />  

    <Button  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="CCCCC" />  

    <Button  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="DDDDD" />  

</LinearLayout>  </pre>轉自：http://blog.csdn.net/android_xiaoqi/article/details/7618895<p></p>