Slip 1 - D) Create an Android application to demonstrate Progress Dialog Box using AsyncTask.

Solution:

XML FILE

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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">

<Button

android:id="@+id/button"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="show progress dialog"

android:layout_gravity="center"

android:layout_marginStart="50dp"/>

</LinearLayout>

JAVA FILE

package com.example.slip12;

import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;

import android.app.ProgressDialog;

import android.os.AsyncTask;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {

Button button;

mytask mytask;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

button=(Button) findViewById(R.id.button);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

mytask = new mytask();

mytask.execute();

}

});

}

class mytask extends AsyncTask<Void,Integer,Void>{

ProgressDialog manish;

boolean running;

@Override

protected Void doInBackground(Void... Voids){

try {

while (manish.getProgress() <= manish .getMax())

{

Thread.sleep(300);

manish.incrementProgressBy(1);

if(manish.getProgress()==manish.getMax())

{

manish.dismiss();

}

}

}catch(Exception e){

e.printStackTrace();

}

return null;

}

@Override

protected void onPreExecute() {

super.onPreExecute();

running = true;

manish=new ProgressDialog(MainActivity.this);

manish.setMax(100);

manish.setMessage("loading....................");

manish.setTitle("Progressdialog Box Example");

manish.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

manish.show();

}

@Override

protected void onPostExecute(Void unused) {

super.onPostExecute(unused);

manish.dismiss();

}

@Override

protected void onProgressUpdate(Integer... values) {

super.onProgressUpdate(values);

manish.setMessage(String.valueOf(values));

}

}

}