Android仿微信进度弹出框的实现方法

MainActivity:

package com.ruru.dialogproject;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends Activity implements Runnable {
 LoadingDialog dialog;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  findViewById(R.id.btn_name).setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View view) {
    dialog = new LoadingDialog(MainActivity.this);
    dialog.setCanceledOnTouchOutside(false);
    dialog.show();
    new Thread(MainActivity.this).start();
   }
  });
 }
 public void run() {
  try {
   Thread.sleep();
   dialog.dismiss();
  } catch (InterruptedException e) {
   e.printStackTrace();
  }
 }
}

activity_main:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/activity_main"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context="com.ruru.dialogproject.MainActivity">
 <Button
  android:id="@+id/btn_name"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:text="Hello World!" />
</RelativeLayout>

LoadingDialog:

package com.ruru.dialogproject;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
 * Created by 27c1 on 2017/1/4.
 */
public class LoadingDialog extends Dialog {
 private TextView tv;
 /**
  * style很关键
  */
 public LoadingDialog(Context context) {
  super(context, R.style.loadingDialogStyle);
 }
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.dialog_loading);
  tv = (TextView) findViewById(R.id.tv);
  tv.setText("正在上传.....");
  LinearLayout linearLayout = (LinearLayout) this.findViewById(R.id.LinearLayout);
  linearLayout.getBackground().setAlpha();
 }
}

dialog_loading:

<?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:background="@android:color/transparent"
 android:orientation="vertical">
 <LinearLayout
  android:id="@+id/LinearLayout"
  android:layout_width="160dp"
  android:layout_height="160dp"
  android:background="@drawable/yuanjiao"
  android:gravity="center"
  android:orientation="vertical">
  <ProgressBar
   android:id="@+id/progressBar1"
   style="?android:attr/progressBarStyleInverse"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="center"
   android:background="@android:color/transparent" />
  <TextView
   android:id="@+id/tv"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="center"
   android:paddingTop="10dp"
   android:textColor="#fff" />
 </LinearLayout>
</LinearLayout> 

R.style.loadingDialogStyle:

<style name="loadingDialogStyle" parent="android:Theme.Dialog">
  <item name="android:windowBackground">@android:color/transparent</item><!--设置dialog的背景-->
  <item name="android:windowFrame">@null</item><!--Dialog的windowFrame框为无-->
  <item name="android:windowNoTitle">true</item><!--是否显示title-->
  <item name="android:windowIsFloating">true</item><!--是否浮现在activity之上-->
  <item name="android:windowIsTranslucent">true</item><!--是否半透明-->
  <item name="android:windowContentOverlay">@null</item><!--是否半透明-->
  <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item><!-- 对话框是否有遮盖 -->
  <item name="android:backgroundDimEnabled">false</item><!--背景是否模糊显示-->
  <item name="android:backgroundDimAmount">0.6</item><!--背景的灰度-->
 </style>

drawable-yuanjiao:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <solid android:color="#86222222" />
 <corners
  android:bottomLeftRadius="10dp"
  android:bottomRightRadius="10dp"
  android:topLeftRadius="10dp"
  android:topRightRadius="10dp" />
</shape> 

效果：

关于样式：

<item name="android:windowFrame">@null</item> ：Dialog的windowFrame框为无
<item name="android:windowIsFloating">true</item>：是否浮现在activity之上
<item name="android:windowIsTranslucent">false</item>:是否半透明
<item name="android:windowNoTitle">true</item>:是否显示title
<item name="android:windowBackground">@drawable/dia_bg</item>:设置dialog的背景
<item name="android:backgroundDimEnabled">true</item>背景是否模糊显示
<item name="android:backgroundDimAmount">0.6</item>背景的灰度

Window attributes属性详解