Android 提交或者上传数据时的dialog弹框动画效果

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_height="200dp"
 android:layout_width="200dp"
 android:layout_centerInParent="true"
 android:background="@drawable/bg_custom_toast">
 <LinearLayout android:layout_height="150dp"
  android:layout_width="150sp"
  android:orientation="vertical"
  android:gravity="center"
  android:layout_centerInParent="true">
  <ImageView
   android:layout_width="60dp"
   android:layout_height="60dp"
   android:layout_gravity="center_horizontal"
   android:src="@mipmap/weixin_loading"/>
  <TextView
   android:id="@+id/text_loading"
   android:layout_height="wrap_content"
   android:layout_width="wrap_content"
   android:layout_gravity="center_horizontal"
   android:layout_marginTop="5dp"
   android:text="微信支付"/>
  <ImageView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:src="@drawable/frame2"
   android:layout_gravity="center_horizontal"/>
 </LinearLayout>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
 android:shape="rectangle" >
 <solid android:color="#90000000" />
 <corners android:radius="8dip" />
</shape>

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
 android:oneshot="false" >
 <item
  android:drawable="@mipmap/appload1"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload2"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload3"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload4"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload5"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload6"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload7"
  android:duration="150"/>
 <item
  android:drawable="@mipmap/appload8"
  android:duration="150"/>
</animation-list>

package com.example.administrator.loadxin;
import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
/**
 * Created by Administrator on 2017/6/21 0021.
 */
public class WeiXinDialog {
 String message=null;
 private Dialog dialog;
 private Context context;
 public WeiXinDialog(Context context) {
  this.context = context;
 }
 public void show(){
  dialog = new Dialog(context, R.style.MyDialogStyle);
  View view = LayoutInflater.from(context).inflate(R.layout.weixin_dialog,null,false);
  dialog.setContentView(view);
  dialog.show();
  WindowManager.LayoutParams lp = dialog.getWindow()
    .getAttributes();
  lp.width = ViewGroup.LayoutParams.WRAP_CONTENT;
  lp.height = ViewGroup.LayoutParams.WRAP_CONTENT;
  dialog.getWindow().setAttributes(lp);
 }
 public void dismiss(){
  if(dialog != null){
   dialog.dismiss();
  }
 }
}

package com.example.administrator.loadxin;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  Button btn= (Button) findViewById(R.id.button);
  btn.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    final WeiXinDialog dialog1 = new WeiXinDialog(MainActivity.this);
    dialog1.show();
   }
  });
 }
}