Hello Readers! In this post, we are going to learn how to create and use android horizontal progressBar programmatically in any android application. We will also learn how to add android horizontal progressBar programmatically in LinearLayout in any android application.

Output

Tutorialwing Android Dynamic Horizontal Progressbar Output

Getting Started

At first, we will create an android application. Then, we will use android progressBar programmatically in the application.

1. Creating New Project

Follow the steps below to create a new project. Please ignore the steps if you have already created a new project.

Now, we will modify xml and java file to use android horizontal progressbar programmatically.

2. Modify values folder

No values folders have been modified. So, we are not going to mention them here.

3. Modify Layout Folder

Open res/layout/activity_main.xml file. Then, add below code into it.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:gravity="center"
	android:orientation="vertical">

	<LinearLayout
		android:id="@+id/rootContainer"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:orientation="vertical">

	</LinearLayout>

	<Button
		android:id="@+id/button"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:text="HIDE PROGRESSBAR"/>

</LinearLayout>

In activity_main.xml file, We have defined a container, LinearLayout having id rootContainer, for the progressBar. We have also defined a button that will show/hide the progressbar when button is clicked.

4. Create Android Horizontal Progressbar Programmatically / Dynamically

Open app/src/main/java/com.tutorialwing.dynamichorizontalprogressbar/MainActivity.java file and add below code into it.

package com.tutorialwing.dynamichorizontalprogressbar;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ProgressBar;

public class MainActivity extends AppCompatActivity {

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

		// Create horizontal progressBar dynamically...
		final ProgressBar progressBar = new ProgressBar(this, null, android.R.attr.progressBarStyleHorizontal);
		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
		layoutParams.setMargins(30, 30, 30, 30);
		progressBar.setLayoutParams(layoutParams);
		progressBar.setIndeterminate(true);

		LinearLayout linearLayout = findViewById(R.id.rootContainer);
		// Add horizontal ProgressBar to LinearLayout
		if (linearLayout != null) {
			linearLayout.addView(progressBar);
		}

		final Button btn = findViewById(R.id.button);
		if (btn != null) {
			btn.setOnClickListener(new View.OnClickListener() {
				@Override
				public void onClick(View v) {
					int visibility = (progressBar.getVisibility() == View.GONE) ? View.VISIBLE : View.GONE;
					progressBar.setVisibility(visibility);

					String btnText = (progressBar.getVisibility() == View.GONE) ? "SHOW PROGRESSBAR" : "HIDE PROGRESSBAR";
					btn.setText(btnText);
				}
			});
		}
	}
}

In MainActivity.java file, we have create horizontal progressbar programmatically. Then, have added it in linearLayout with id rootContainer. We have also set a click listener to the button that, when clicked, show / hide progressbar. Also, text of the button changes accordingly. Attribute progressBar.setIndeterminate(true); is responsible for defining the indeterminate mode of the progressBar.

Since AndroidManifest.xml file is very important in any android project. We are also going to see the content inside this file.

AndroidManifest.xml file

Code inside src/main/AndroidManifest.xml file would look like below –

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.tutorialwing.dynamichorizontalprogressbar"
		  xmlns:android="http://schemas.android.com/apk/res/android">

	<application
		android:allowBackup="true"
		android:icon="@mipmap/ic_launcher"
		android:label="@string/app_name"
		android:roundIcon="@mipmap/ic_launcher_round"
		android:supportsRtl="true"
		android:theme="@style/AppTheme">
		<activity android:name=".MainActivity">
			<intent-filter>
				<action android:name="android.intent.action.MAIN"/>

				<category android:name="android.intent.category.LAUNCHER"/>
			</intent-filter>
		</activity>
	</application>

</manifest>

When we run the application, we will get output as shown above.

That’s the end of tutorial on Creating Android Horizontal ProgressBar programmatically.