【Android开发日记】Popupwindow 完美demo

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Popupwindow 完美demo实现

图示：

关键代码说明：

1.弹出popupwindow，背景变暗

ColorDrawable cd = new ColorDrawable(0x000000);
popuWindow1.setBackgroundDrawable(cd); 
WindowManager.LayoutParams lp=getWindow().getAttributes();
lp.alpha = 0.4f;
getWindow().setAttributes(lp);

2.popupwindow消失之后，背景恢复

public void onDismiss(){
    WindowManager.LayoutParams lp=getWindow().getAttributes();
    lp.alpha = 1f;
    getWindow().setAttributes(lp);	
}

3.popupwindow圆角矩形

rounded_corners_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"> 
    <solid android:color="#FFFFFF" /> 	
    <corners 
        android:topLeftRadius="5dp"
        android:topRightRadius="5dp" 
        android:bottomRightRadius="5dp"
        android:bottomLeftRadius="5dp"/> 
</shape>

pupopwindow布局文件里设置背景

<?
xml version="1.0" encoding="UTF-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center"    android:background="@drawable/rounded_corners_bg"    android:orientation="vertical" >     ...     ...     ... </RelativeLayout >

4.点击popupwindow外部。popupwindow也会dismiss

popuWindow1.setOutsideTouchable(true);
popuWindow1.setFocusable(true);

完整代码：

1.MainActivity.java

package com.popupwindowdemo;

import android.app.Activity;
import android.content.Intent;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.PopupWindow.OnDismissListener;

public class MainActivity extends Activity {
	
	//popupwindow
	private PopupWindow popuWindow1;  
	private View contentView1;
	private TextView textview1;
	private Button btn1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		textview1 = (TextView)findViewById(R.id.textView2);
		btn1 = (Button)findViewById(R.id.button1);
		btn1.setOnClickListener(new View.OnClickListener() {
	        public void onClick(View v) {
	        	initPopuWindow1(v);
	        }
	    });
		
		textview1.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://blog.csdn.net/geeklei/article/"));
				startActivity(intent);
			}
		});
	}
	
	private void initPopuWindow1(View parent) {  
	   	if (popuWindow1 == null) {
	   		LayoutInflater mLayoutInflater = LayoutInflater.from(this);
				contentView1 = mLayoutInflater.inflate(R.layout.popuwindow1, null);
				popuWindow1 = new PopupWindow(contentView1,ViewGroup.LayoutParams.WRAP_CONTENT,  
						ViewGroup.LayoutParams.WRAP_CONTENT);
	   	}

	   	ColorDrawable cd = new ColorDrawable(0x000000);
	   	popuWindow1.setBackgroundDrawable(cd); 
	   	//产生背景变暗效果
	    WindowManager.LayoutParams lp=getWindow().getAttributes();
		lp.alpha = 0.4f;
		getWindow().setAttributes(lp);
	   	  
	   	popuWindow1.setOutsideTouchable(true);
	   	popuWindow1.setFocusable(true);
	   	popuWindow1.showAtLocation((View)parent.getParent(), Gravity.CENTER|Gravity.CENTER_HORIZONTAL, 0, 0);

    	popuWindow1.update();
    	popuWindow1.setOnDismissListener(new OnDismissListener(){
    	
    	//在dismiss中恢复透明度
    	public void onDismiss(){
    			WindowManager.LayoutParams lp=getWindow().getAttributes();
    			lp.alpha = 1f;
    			getWindow().setAttributes(lp);	
    		}			
    	 });
	}  


}

2.activity_main.xml

<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="com.popupwindowdemo.MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="23dp"
        android:text="click to visit my csdn blog"
        android:textColor="#1C86EE" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="103dp"
        android:text="click to show popupwindow" />

</RelativeLayout>

3.popupwindow1.xml

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:background="@drawable/rounded_corners_bg"
   
    android:orientation="vertical" >
    
	<LinearLayout
	    android:layout_width="220dp"
	    android:layout_height="wrap_content"
	    android:layout_centerInParent="true"
	    android:layout_gravity="center_vertical|center"
	    android:orientation="vertical" >
	    
	    	<TextView
                android:id="@+id/group_menu1_passfile"
                android:layout_width="fill_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="20dp"
                android:gravity="center_vertical"
                android:text="item1"
                android:textColor="#000000"
                android:textSize="13sp" />

            <View
                android:layout_width="match_parent"
                android:layout_height="0.5dp"
                android:background="#999999" />
            <TextView
                android:id="@+id/group_menu1_playgame"
                android:layout_width="fill_parent"
                android:layout_height="40dp"
                 android:layout_marginLeft="20dp"
                android:gravity="center_vertical"
                android:text="item2"
                android:textColor="#000000"
                android:textSize="13sp" />
            <View
                android:layout_width="match_parent"
                android:layout_height="0.5dp"
                android:background="#999999" />
            

            <TextView
                android:id="@+id/group_menu1_removefriend"
                android:layout_width="fill_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="20dp"
                android:gravity="center_vertical"
                android:text="item3"
                android:textColor="#000000"
                android:textSize="13sp" />

            <View
                android:layout_width="match_parent"
                android:layout_height="0.5dp"
                android:background="#999999" />

            <TextView
                android:id="@+id/group_menu1_setremark"
                android:layout_width="fill_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="20dp"
                android:gravity="center_vertical"        
                android:text="item4"
                android:textColor="#000000"
                android:textSize="13sp" />

            <View
                android:layout_width="match_parent"
                android:layout_height="0.5dp"
                android:background="#999999" />
     
            <TextView
                android:id="@+id/group_menu1_brokemate"
                android:layout_width="fill_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="20dp"
                android:gravity="center_vertical"        
                android:text="item5"
                android:textColor="#000000"
                android:textSize="13sp" />

                     
	</LinearLayout>
</RelativeLayout>

4.rounded_corners_bg.xml

<?xml version="1.0" encoding="utf-8"?
><shape xmlns:android="http://schemas.android.com/apk/res/android">     <solid android:color="#FFFFFF" /> 	    <corners         android:topLeftRadius="5dp"        android:topRightRadius="5dp"         android:bottomRightRadius="5dp"        android:bottomLeftRadius="5dp"/> </shape>