Android仿微信进度弹出框的实现方法

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(5000); 
   dialog.dismiss(); 
  } catch (InterruptedException e) { 
   e.printStackTrace(); 
  } 
 } 
} 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
  

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(210); 
 } 
} 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
  
   
   
  
 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
  
  

@null ：Dialog的windowFrame框为无 
true：是否浮现在activity之上 
false:是否半透明 
true:是否显示title 
@drawable/dia_bg:设置dialog的背景 
true背景是否模糊显示 
0.6背景的灰度