Introduction
In this article, I will show you how to create a Progress Bar Android app using Android Studio. We can display the Android progress bar dialog box to display the status of the work being done, e.g., downloading a file or analyzing the status of work, etc.
Requirements
Steps should be followed
Follow these steps to create a Progress Bar app using Android Studio. I have attached the source code too.
Step 1
Open Android Studio and start a New Android Studio Project.
Step 2
You can choose your application name and choose where your project is stored. If you wish to use C++ for coding the project, mark the "Include C++ support", and click the "Next" button.
Step 3
Now, select the version of Android and select the target Android devices. We need to choose the SDK level which plays an important role to run the application.
Step 4
Now, add the activity and click the "Next" button.
Step 5
Add Activity name and click "Finish".
Step 6
Go to activity_main.xml, This XML file contains the designing code for our Android app.
The XML code is given below.
- <RelativeLayout
- 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=".MainActivity" >
-
- <Button
- android:id="@+id/button1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_alignParentTop="true"
- android:layout_centerHorizontal="true"
- android:layout_marginTop="116dp"
- android:text="download file" />
-
- </RelativeLayout>
Step 7
Go to Main Activity.java. This Java program is the backend language for Android.
The java code is given below.
- package abu.progressbar;
-
- import android.app.Activity;
- import android.app.ProgressDialog;
- import android.os.Bundle;
- import android.os.Handler;
- import android.widget.Button;
- import android.view.Menu;
- import android.view.View;
- import android.view.View.OnClickListener;
- public class MainActivity extends Activity {
- Button btnStartProgress;
- ProgressDialog progressBar;
- private int progressBarStatus = 0;
- private Handler progressBarHandler = new Handler();
- private long fileSize = 0;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- addListenerOnButtonClick();
- }
- public void addListenerOnButtonClick() {
- btnStartProgress = (Button) findViewById(R.id.button1);
- btnStartProgress.setOnClickListener(new OnClickListener(){
-
- @Override
- public void onClick(View v) {
-
- progressBar = new ProgressDialog(v.getContext());
- progressBar.setCancelable(true);
- progressBar.setMessage("File downloading ...");
- progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
- progressBar.setProgress(0);
- progressBar.setMax(100);
- progressBar.show();
-
- progressBarStatus = 0;
- fileSize = 0;
-
- new Thread(new Runnable() {
- public void run() {
- while (progressBarStatus < 100) {
-
- progressBarStatus = doOperation();
- try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}
- progressBarHandler.post(new Runnable() {
- public void run() {
- progressBar.setProgress(progressBarStatus);
- }
- });
- }
-
- if (progressBarStatus >= 100) {
- try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}
- progressBar.dismiss();
- }
- }
- }).start();
- }
- });
- }
-
- public int doOperation() {
-
- while (fileSize <= 10000) {
- fileSize++;
- if (fileSize == 1000) {
- return 10;
- } else if (fileSize == 2000) {
- return 20;
- } else if (fileSize == 3000) {
- return 30;
- } else if (fileSize == 4000) {
- return 40;
- } else{
- return 100;
- }
- }
- return 100;
- }
-
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {
-
- getMenuInflater().inflate(R.menu.main, menu);
- return true;
- }
-
- }
Step 8
Now, go to the menu bar and click "make the project" or press ctrl+f9 to debug the error.
Step 9
Then, click the Run button or press shift+f10 to run the project. Choose the virtual machine option and click OK.
Conclusion
We have successfully created the Progress Bar Android application using Android Studio.
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