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Android ProgressBar

ProgressBar:

ProgressBar is a user interface element that visually represents the progress of a task or operation.

It provides a graphical indication, often in the form of a horizontal or circular bar, to show users that some work is in progress, and it gives them a sense of how much of the task has been completed.

There are two main types of ProgressBar in Android:

Horizontal ProgressBar:
Circular ProgressBar:

                                    
                                            <?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
        tools:context=".ProgressBarExample"
        android:gravity="center"
        android:orientation="vertical"
        android:padding="16dp">
   
       <TextView
           android:id="@+id/text"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="Click on start button"
           android:layout_marginBottom="20dp"/>
   
        <ProgressBar
           android:id="@+id/progress"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:layout_marginBottom="24dp"
           style="@style/Widget.AppCompat.ProgressBar.Horizontal"
           android:max="100"
           />
   
        <Button
           android:id="@+id/start"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="Start"
           android:textColor="@color/colorWhite"
           android:background="@color/colorOrange"
           />
   
</LinearLayout>

                                    
                                            package com.example.widgets;
    
import android.os.Handler;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;
  
public class ProgressBarExample extends AppCompatActivity {
   
    TextView textView;
    ProgressBar progressBar;
    Button button;
    Handler handler;
    int progresscount=0;
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_progress_bar_example);
   
        textView=(TextView)findViewById(R.id.text);
        progressBar=(ProgressBar)findViewById(R.id.progress);
        button=(Button)findViewById(R.id.start);
   
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
   
                handler=new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        if (progressBar.getProgress()<100){
                            progressBar.setProgress(progresscount);
                            progresscount++;
                            handler.postDelayed(this,100);
                            textView.setText("plz wait...");
                        }else{
                            textView.setText("completed...");
                        }
                    }
                },100);
            }
        });
   
    }
}

                                    
                                        package com.example.widgets

import android.os.Bundle
import android.os.Handler
import android.view.View
import android.widget.Button
import android.widget.ProgressBar
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity

class ProgressBarExample : AppCompatActivity() {

    private lateinit var textView: TextView
    private lateinit var progressBar: ProgressBar
    private lateinit var button: Button
    private lateinit var handler: Handler
    private var progressCount = 0

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_progress_bar_example)

        textView = findViewById(R.id.text)
        progressBar = findViewById(R.id.progress)
        button = findViewById(R.id.start)

        button.setOnClickListener {
            handler = Handler()
            handler.postDelayed(object : Runnable {
                override fun run() {
                    if (progressBar.progress < 100) {
                        progressBar.progress = progressCount
                        progressCount++
                        handler.postDelayed(this, 100)
                        textView.text = "Please wait..."
                    } else {
                        textView.text = "Completed..."
                    }
                }
            }, 100)
        }
    }
}

Output