Android ProgressBar Tutorial

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1- Android ProgressBar

In Android, ProgressBar is an interface component used to display the progress of an activity, for example, downloading a file, or uploading a file, etc.
ProgressBar has several different styles determined by the style attribute. Basically, there are 2 types of ProgressBar:
  1. Spinning Wheel ProgressBar
  2. Horizontal ProgressBar
<!-- Spinning Wheel ProgressBar -->
<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyle"
    ...  />


<!-- Horizontal ProgressBar -->
<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyleHorizontal"
    ...  />
In addition, ProgressBar supports two modes of the process which are  Determinate and Indeterminate.

Determinate mode

Determinate mode: It is recommended to use this mode for the ProgressBar if you can determine the percentage of work completed. For example, percentage of files downloaded, number of records inserted into the database, etc
The default mode for a horizontal ProgressBar is Determinate.
Common attributes used for a ProgressBar in Determinate mode are presented in the table below:
Attributes Description
min Minimum value of a ProgressBar. The default value is 0. You can only specify another value for it if you are using API Level 26+ (Android 8.0+).
max Maximum value of a ProgressBar. The default value is 100.
progress Temporary value of a ProgressBar.The default value is 0.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { // 26 (Android 8.0+)
    // Set Minimum value for ProgressBar. Work with API Level 26+ (Android 8.0+)
    progressBar.setMin(20);
}

progressBar.setProgress(25); // Default 0.
progressBar.setMax(200);  // Default 100.
<ProgressBar
    android:id="@+id/progressBar4"
    style="?android:attr/progressBarStyleHorizontal"
    android:max="200"
    android:progress="55"
    ... />

Indeterminate mode

Indeterminate mode: You should use this mode for ProgressBar if you can not determine the percentage of work completed.
<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyleHorizontal"
    android:indeterminate="true"
    ... />
final ProgressBar progressBar = (ProgressBar) this.findViewById(R.id.progressBar_id);

progressBar.setIndeterminate(true);

2- ProgressBar Styles

ProgressBar has several different styles, determined by the style attribute. By default, the style of a  ProgressBar is a spinning wheel.
On the designing screen, when you drag and drop a ProgressBar into the interface, Android Studio will generate XML code of ProgressBar with the default value of the style attribute.
ProgressBar(s)
<!-- Default Spinning Wheel ProgressBar Style -->
<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyle"
    ...  />


<!-- Default Horizontal ProgressBar Style -->
<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyleHorizontal"
    ...  />
However, you can definitely change the value of the style attribute:
<ProgressBar
    android:id="@+id/progressBar15"
    style="@android:style/Widget.ProgressBar.Large"  
    ... />

Spinning Wheel ProgressBar Styles

 Below are the  Spinning Wheel ProgressBar illustrations with different  Style(s).
  • style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Small"  
  • style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Small.Inverse"
  • style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Large"
  • style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Large.Inverse"
  • style="@android:style/Widget.ProgressBar.Large"
  • style="@android:style/Widget.ProgressBar.Large.Inverse"
Spinning Wheel ProgressBar Styles Example
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView11"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.DeviceDefault.Light.ProgressBar.Small"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ProgressBar
        android:id="@+id/progressBar11"
        style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Small"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView11" />

    <TextView
        android:id="@+id/textView12"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.DeviceDefault.Light.ProgressBar.Small.Inverse"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar11" />

    <ProgressBar
        android:id="@+id/progressBar12"
        style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Small.Inverse"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView12" />

    <TextView
        android:id="@+id/textView13"
        android:layout_width="0dp"
        android:layout_height="21dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.DeviceDefault.Light.ProgressBar.Large"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar12" />

    <ProgressBar
        android:id="@+id/progressBar13"
        style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Large"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView13" />

    <TextView
        android:id="@+id/textView14"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.DeviceDefault.Light.ProgressBar.Large.Inverse"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar13" />

    <ProgressBar
        android:id="@+id/progressBar14"
        style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Large.Inverse"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView14" />

    <TextView
        android:id="@+id/textView15"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.ProgressBar.Large"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar14" />

    <ProgressBar
        android:id="@+id/progressBar15"
        style="@android:style/Widget.ProgressBar.Large"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="80"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView15" />

    <TextView
        android:id="@+id/textView16"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.ProgressBar.Large.Inverse"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar15" />

    <ProgressBar
        android:id="@+id/progressBar16"
        style="@android:style/Widget.ProgressBar.Large.Inverse"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView16" />

</androidx.constraintlayout.widget.ConstraintLayout>
There are a few Style(s) with different names but you will find it difficult to see the difference in terms of interface. Such as: Widget.ProgressBar.Large & Widget.ProgressBar.Large.Inverse.
  • Widget.ProgressBar.Large: Intended to be used to place on a dark background.
  • Widget.ProgressBar.Large.Inverse: Intended to be used to place on a light background.
Note that you will not spot the difference when the application is running on Android Emulator. However, you can perceive the difference only when the application is running on the well-displayed devices.

Horizontal ProgressBar Styles

  • style="?android:attr/progressBarStyleHorizontal" (Default of Horizontal ProgressBar)
  • style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Horizontal"
  • style="@android:style/Widget.DeviceDefault.ProgressBar.Horizontal"
  • style="@android:style/Widget.Holo.Light.ProgressBar.Horizontal"  
  • style="@android:style/Widget.Material.Light.ProgressBar.Horizontal"
  • style="@android:style/Widget.Holo.ProgressBar.Horizontal"  
  • style="@android:style/Widget.Material.Light.ProgressBar.Horizontal"  
  • style="@android:style/Widget.ProgressBar.Horizontal"
Horizontal ProgressBar Styles Example
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView51"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="(Default)"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ProgressBar
        android:id="@+id/progressBar51"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="25"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.555"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView51" />

    <TextView
        android:id="@+id/textView52"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.DeviceDefault.Light.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar51" />

    <ProgressBar
        android:id="@+id/progressBar52"
        style="@android:style/Widget.DeviceDefault.Light.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="50"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView52" />

    <TextView
        android:id="@+id/textView53"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.DeviceDefault.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar52" />

    <ProgressBar
        android:id="@+id/progressBar53"
        style="@android:style/Widget.DeviceDefault.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="30"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView53" />

    <TextView
        android:id="@+id/textView54"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.Holo.Light.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar53" />

    <ProgressBar
        android:id="@+id/progressBar54"
        style="@android:style/Widget.Holo.Light.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="80"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView54" />

    <TextView
        android:id="@+id/textView55"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.Material.Light.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar54" />

    <ProgressBar
        android:id="@+id/progressBar55"
        style="@android:style/Widget.Material.Light.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="70"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView55" />

    <TextView
        android:id="@+id/textView56"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.Holo.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar55" />

    <ProgressBar
        android:id="@+id/progressBar57"
        style="@android:style/Widget.Holo.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="55"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView56" />

    <TextView
        android:id="@+id/textView58"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.Material.Light.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar57" />

    <ProgressBar
        android:id="@+id/progressBar58"
        style="@android:style/Widget.Material.Light.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="90"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView58" />

    <TextView
        android:id="@+id/textView59"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="Widget.ProgressBar.Horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar58" />

    <ProgressBar
        android:id="@+id/progressBar59"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:progress="75"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView59" />

</androidx.constraintlayout.widget.ConstraintLayout>

3- Example: ProgressBar (Thread, Handler)

In this example, I'm going to create 2 horizontal ProgressBar(s).
  1. The first ProgressBar is put in Determinate mode. It displays a process which the percentage of complete work is indicated.
  2. The second ProgressBar is put in Indeterminate mode. It will show a progress for which you cannot know the percentage of completed work.
Here is the preview of the example:
In this example, I'm using Thread to do the work, downloading a file, or updating the records in the database, for example. Then I use  Handler to update information in the interface.
* Thread + Handler *
private void doStartProgressBar2()  {
    this.progressBar2.setIndeterminate(true);

    Thread thread = new Thread(new Runnable()  {

        @Override
        public void run() {
            // Update interface
            handler.post(new Runnable() {
                public void run() {
                    textViewInfo2.setText("Working...");
                    buttonStart2.setEnabled(false);
                }
            });
            // Do something ... (Update database,..)
            SystemClock.sleep(5000); // Sleep 5 seconds.

            progressBar2.setIndeterminate(false);
            progressBar2.setMax(1);
            progressBar2.setProgress(1);

            // Update interface
            handler.post(new Runnable() {
                public void run() {
                    textViewInfo2.setText("Completed!");
                    buttonStart2.setEnabled(true);
                }
            });
        }
    });
    thread.start();
}
On  Android Studio, create a project:
  • File > New > New Project > Empty Activity
    • Name: ProgressBarHorizontalExample
    • Package name: org.o7planning.progressbarhorizontalexample
    • Language: Java
Then design the interface:
main_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView_label1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Determinate mode:"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView_label1" />

    <TextView
        android:id="@+id/textView_info1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:gravity="center_horizontal"
        android:text="(Info)"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar1" />

    <Button
        android:id="@+id/button_start1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Start"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView_info1" />

    <TextView
        android:id="@+id/textView_label2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Indeterminate mode:"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/button_start1" />

    <ProgressBar
        android:id="@+id/progressBar2"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:indeterminate="true"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView_label2" />

    <TextView
        android:id="@+id/textView_info2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:gravity="center_horizontal"
        android:text="(Info)"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/progressBar2" />

    <Button
        android:id="@+id/button_start2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Start"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView_info2" />

</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package org.o7planning.progressbarhorizontalexample;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private Button buttonStart1;
    private Button buttonStart2;
    private ProgressBar progressBar1;
    private ProgressBar progressBar2;

    private TextView textViewInfo1;
    private TextView textViewInfo2;

    private Handler handler = new Handler();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        this.progressBar1 = (ProgressBar) this.findViewById(R.id.progressBar1);
        this.progressBar2 = (ProgressBar) this.findViewById(R.id.progressBar2);
        this.progressBar2.setIndeterminate(false);

        this.textViewInfo1 = (TextView) this.findViewById(R.id.textView_info1);
        this.textViewInfo2 = (TextView) this.findViewById(R.id.textView_info2);


        this.buttonStart1 = (Button) this.findViewById(R.id.button_start1);
        this.buttonStart2 = (Button) this.findViewById(R.id.button_start2);

        this.buttonStart1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                doStartProgressBar1();
            }
        });

        this.buttonStart2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                doStartProgressBar2();
            }
        });

    }

    private void doStartProgressBar1()  {
        final int MAX = 110;
        this.progressBar1.setMax(MAX);

        Thread thread = new Thread(new Runnable()  {

            @Override
            public void run() {
                handler.post(new Runnable() {
                    public void run() {
                        buttonStart1.setEnabled(false);
                    }
                });
                for( int i =0; i < MAX; i++) {
                    final int progress = i + 1;
                    // Do something (Download, Upload, Update database,..)
                    SystemClock.sleep(20); // Sleep 20 milliseconds.

                    // Update interface.
                    handler.post(new Runnable() {
                        public void run() {
                            progressBar1.setProgress(progress);
                            int percent = (progress * 100) / MAX;

                            textViewInfo1.setText("Percent: " + percent + " %");
                            if(progress == MAX)  {
                                textViewInfo1.setText("Completed!");
                                buttonStart1.setEnabled(true);
                            }
                        }
                    });
                }
            }
        });
        thread.start();
    }

    private void doStartProgressBar2()  {
        this.progressBar2.setIndeterminate(true);

        Thread thread = new Thread(new Runnable()  {

            @Override
            public void run() {
                // Update interface
                handler.post(new Runnable() {
                    public void run() {
                        textViewInfo2.setText("Working...");
                        buttonStart2.setEnabled(false);
                    }
                });
                // Do something ... (Update database,..)
                SystemClock.sleep(5000); // Sleep 5 seconds.

                progressBar2.setIndeterminate(false);
                progressBar2.setMax(1);
                progressBar2.setProgress(1);

                // Update interface
                handler.post(new Runnable() {
                    public void run() {
                        textViewInfo2.setText("Completed!");
                        buttonStart2.setEnabled(true);
                    }
                });
            }
        });
        thread.start();
    }
}

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