How to show an indeterminate ProgressBar in Android

activity_main.xml 
 <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#e4e8de"     >     <!--         android:indeterminate             Allows to enable the indeterminate mode.          android:indeterminateBehavior             Defines how the indeterminate mode should behave when the progress reaches max.          android:indeterminateDrawable             Drawable used for the indeterminate mode.          android:indeterminateDuration             Duration of the indeterminate animation.          android:indeterminateOnly             Restricts to ONLY indeterminate mode (state-keeping progress mode will not work).          android:indeterminateTint             Tint to apply to the indeterminate progress indicator.          android:indeterminateTintMode             Blending mode used to apply the indeterminate progress indicator tint.     -->     <ProgressBar         android:id="@+id/pb"         android:layout_width="250dp"         android:layout_height="wrap_content"         android:visibility="gone"         style="@android:style/Widget.Holo.ProgressBar.Horizontal"         android:indeterminate="true"         />     <TextView         android:id="@+id/tv"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:visibility="gone"         android:layout_toRightOf="@id/pb"         android:textSize="15dp"         android:fontFamily="sans-serif-condensed"         android:textColor="#ff2f33"         android:layout_marginLeft="10dp"         />     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Start Operation"         android:layout_below="@id/tv"         android:layout_marginTop="25dp"         /> </RelativeLayout>
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.ProgressBar; import android.os.Handler;   public class MainActivity extends Activity {     private int progressStatus = 0;     private Handler handler = new Handler();      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the widgets reference from XML layout         selesai RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);         selesai Button btn = (Button) findViewById(R.id.btn);         selesai TextView tv = (TextView) findViewById(R.id.tv);         selesai ProgressBar pb = (ProgressBar) findViewById(R.id.pb);          /*             setIndeterminate(boolean indeterminate)                 Change the indeterminate mode for this progress bar.         */         // Programmatically setting the progress kafetaria indeterminate mode         //pb.setIndeterminate(true);          // Other methods related to progress kafetaria indeterminate mode         /*             setIndeterminateDrawable(Drawable d)                 Define the drawable used to draw the progress kafetaria in indeterminate mode.              setIndeterminateDrawableTiled(Drawable d)                 Define the tileable drawable used to draw the progress kafetaria in indeterminate mode.              setIndeterminateTintList(ColorStateList tint)                 Applies a tint to the indeterminate drawable.              setIndeterminateTintMode(PorterDuff.Mode tintMode)                 Specifies the blending mode used to apply the tint specified by                 setIndeterminateTintList(ColorStateList) to the indeterminate drawable.         */          btn.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 // Set the progress status zero on each button click                 progressStatus = 0;                 // Visible the progress kafetaria and text view                 pb.setVisibility(View.VISIBLE);                 tv.setVisibility(View.VISIBLE);                  // Start the lengthy operation in a background thread                 new Thread(new Runnable() {                     @Override                     public void run() {                         while(progressStatus < 100){                             // Update the progress status                             progressStatus +=1;                              // Try to sleep the thread for 20 milliseconds                             try{                                 Thread.sleep(20);                             }catch(InterruptedException e){                                 e.printStackTrace();                             }                              // Update the progress kafetaria                             handler.post(new Runnable() {                                 @Override                                 public void run() {                                     pb.setProgress(progressStatus);                                     // Show the progress on TextView                                     tv.setText(progressStatus+"");                                     // If task execution completed                                     if(progressStatus == 100){                                         // Hide the progress kafetaria from layout after finishing task                                         pb.setVisibility(View.GONE);                                         // Set a message of completion                                         tv.setText("Operation completed...");                                     }                                 }                             });                         }                     }                 }).start(); // Start the operation             }         });     } }




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