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ProgressBar with Examples Android


activity_main.xml


<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent">
    <ProgressBar
        android:id="@+id/pBar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="100dp"
        android:layout_marginTop="200dp"
        android:minHeight="50dp"
        android:minWidth="200dp"
        android:max="100"
        android:indeterminate="false"
        android:progress="0" />
    <TextView
        android:id="@+id/tView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/pBar"
        android:layout_below="@+id/pBar" />
    <Button
        android:id="@+id/btnShow"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="130dp"
        android:layout_marginTop="20dp"
        android:text="Start Progress"
        android:layout_below="@+id/tView"/>
</RelativeLayout>

MainActivity.java


package com.example.progressbarexample;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {
    private ProgressBar pgsBar;
    private int i = 0;
    private TextView txtView;
    private Handler hdlr = new Handler();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        pgsBar = (ProgressBar) findViewById(R.id.pBar);
        txtView = (TextView) findViewById(R.id.tView);
        Button btn = (Button)findViewById(R.id.btnShow);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                i = pgsBar.getProgress();
                new Thread(new Runnable() {
                    public void run() {
                        while (i < 100) {
                            i += 1;
                            // Update the progress bar and display the current value in text view
                            hdlr.post(new Runnable() {
                                public void run() {
                                    pgsBar.setProgress(i);
                                    txtView.setText(i+"%");
                                }
                            });
                            try {
                                // Sleep for 200 milliseconds to show the progress slowly.
                                Thread.sleep(200);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }).start();
            }
        });
    }
}