【Android開發日記】Popupwindow 完美demo
阿新 • • 發佈：2018-12-23
Popupwindow 完美demo實現
圖示：
關鍵程式碼說明：
1.彈出popupwindow，背景變暗
ColorDrawable cd = new ColorDrawable(0x000000); popuWindow1.setBackgroundDrawable(cd); WindowManager.LayoutParams lp=getWindow().getAttributes(); lp.alpha = 0.4f; getWindow().setAttributes(lp);
2.popupwindow消失之後，背景恢復
public void onDismiss(){
WindowManager.LayoutParams lp=getWindow().getAttributes();
lp.alpha = 1f;
getWindow().setAttributes(lp);
}
3.popupwindow圓角矩形
rounded_corners_bg.xml
pupopwindow佈局檔案中設定背景<?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>
<?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.點選popupwindow外部，popupwindow也會dismiss
popuWindow1.setOutsideTouchable(true);
popuWindow1.setFocusable(true);完整程式碼：
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);
//產生背景變暗效果
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中恢復透明度
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>