آموزش ProgressCircle اندروید

ProgressDialog progress =newProgressDialog(this);

progress.setMessage("Downloading Music :) ");
progress.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progress.setIndeterminate(true);

package com.PRG.ProgressDialog   ;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
   Button b1;
   private  ProgressDialog progressBar;
   private int progressBarStatus = 0;
   private Handler progressBarbHandler = new Handler();
   private long fileSize = 0;
   
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      b1=(Button)findViewById(R.id.button);
      
      b1.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View v) {
            progressBar = new ProgressDialog(v.getContext());
            progressBar.setCancelable(true);
            progressBar.setMessage("File downloading ...");
            progressBar.setProgressStyle(ProgressDialog.STYLE_SPINNER);
            progressBar.setProgress(0);
            progressBar.setMax(100);
            progressBar.show();
            progressBarStatus = 0;
            
            fileSize = 0;
            new Thread(new Runnable() {
               public void run() {
                  while (progressBarStatus < 100) {
                     progressBarStatus = downloadFile();
                     
                     try {
                        Thread.sleep(1000);
                     }
                     
                     catch (InterruptedException e) {
                        e.printStackTrace();
                     }
                     
                     progressBarbHandler.post(new Runnable() {
                        public void run() {
                           progressBar.setProgress(progressBarStatus);
                        }
                     });
                  }
                  
                  if (progressBarStatus >= 100) {
                     try {
                        Thread.sleep(2000);
                     }
                     
                     catch (InterruptedException e) {
                        e.printStackTrace();
                     }
                     progressBar.dismiss();
                  }
               }
            }).start();
         }
      });
   }
   public int downloadFile() {
      while (fileSize <= 1000000) {
         fileSize++;
         
         if (fileSize == 100000) {
            return 10;
         }
         
         else if (fileSize == 200000) {
            return 20;
         }
         
         else if (fileSize == 300000) {
            return 30;
         }
         
         else if (fileSize == 400000) {
            return 40;
         }
         
         else if (fileSize == 500000) {
            return 50;
         }
         
         else if (fileSize == 700000) {
            return 70;
         }
         else if (fileSize == 800000) {
            return 80;
         }
      }
      return 100;
   }
   
   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu; this adds items to the action bar if it is present.
      getMenuInflater().inflate(R.menu.menu_main, menu);
      return true;
   }
   
   @Override
   public boolean onOptionsItemSelected(MenuItem item) {
      // Handle action bar item clicks here. The action bar will
      // automatically handle clicks on the Home/Up button, so long
      // as you specify a parent activity in AndroidManifest.xml.
      
      int id = item.getItemId();
      
      //noinspection SimplifiableIfStatement
      if (id == R.id.action_settings) {
         return true;
      }
      return super.onOptionsItemSelected(item);
   }
}

<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:paddingLeft="@dimen/activity_horizontal_margin"
   android:paddingRight="@dimen/activity_horizontal_margin"
   android:paddingTop="@dimen/activity_vertical_margin"
   android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
   
   <TextView android:text="Music Palyer" android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/textview"
      android:textSize="35dp"
      android:layout_alignParentTop="true"
      android:layout_centerHorizontal="true" />
      
   <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Tutorials point"
      android:id="@+id/textView"
      android:layout_below="@+id/textview"
      android:layout_centerHorizontal="true"
      android:textColor="#ff7aff24"
      android:textSize="35dp" />
      
   <Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="download"
      android:id="@+id/button"
      android:layout_alignParentBottom="true"
      android:layout_centerHorizontal="true"
      android:layout_marginBottom="112dp" />
      
   <ImageView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/imageView"
      android:src="@drawable/abc"
      android:layout_below="@+id/textView"
      android:layout_centerHorizontal="true" />
      
</RelativeLayout>

<resources>
   <string name="app_name">My Application</string>
   <string name="hello_world">Hello world!</string>
   <string name="action_settings">Settings</string>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="com.PRG.progressdialog"
   android:versionCode="1"
   android:versionName="1.0" >

   <application
      android:allowBackup="true"
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/AppTheme" >
      
      <activity
         android:name="com.PRG.ProgressDialog.MainActivity"
         android:label="@string/app_name" >
         
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
         
      </activity>
      
   </application>
</manifest>