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【Android开发日记】Popupwindow 完美demo

news 来源：原创 2024/5/3 22:17:39

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布局文件中设置背景

<?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"