Introduction

In this article, we are going to see how to create a Dot Loader in the Android app using the Android Studio. In a user interface, the Dot Loader plays a unique role. It is the only thing on a Splash page which will attract the user. We can define different levels of motions to the Dots.
Step 1
Create a new project in Android Studio.
Android
Give a name to the project and click "Next".
Android
Select "Phone and Tablet" and click "Next".
Android
Select an empty activity and click "Next".
Android
At last, give the activity name and click on "Finish".
Android
Step 2
Set up the Gradle by just locating the Gradle Scripts>>Build.Gradle.
Android
And type the following dependency in your app's build.gradle.
Android
Code copy is given below.
  1. compile 'com.steelkiwi:dots-loader-view:1.0.0'
Step 3
Next, go to app >> res >> layout >> activity_main.xml. Select activity page.
Android
And just type the code as given below.
Android
The code copy is mentioned below.
  1. <steelkiwi.com.library.DotsLoaderView
  2. android:id="@+id/dotsLoader"
  3. android:visibility="visible"
  4. android:layout_width="match_parent"
  5. android:layout_height="match_parent"
  6. app:dlv_item_drawable="@drawable/circle_background"
  7. app:dlv_line_color="@color/point_color"
  8. />
Step 4
Next, go to app >> java>>Mainactivity.java. Select Mainactivity page.
Android
And just type the code as given.
Android
  1. DotsLoaderView dotsLoaderView;
  2. @Override
  3. protected void onCreate(Bundle savedInstanceState) {
  4. super.onCreate(savedInstanceState);
  5. setContentView(R.layout.activity_main);
  7. dotsLoaderView = (DotsLoaderView)findViewById(R.id.dotsLoader);
  9. downloadDemo();
  10. }
  12. private void downloadDemo() {
  13. AsyncTask<String,String,String> demoAsync = new AsyncTask<String, String, String>() {
  15. @Override
  16. protected void onPreExecute() {
  17. dotsLoaderView.show();
  18. }
  20. @Override
  21. protected String doInBackground(String... params) {
  22. try {
  23. Thread.sleep(5000);
  24. } catch (InterruptedException e) {
  25. e.printStackTrace();
  26. }
  27. return "done";
  28. }
  30. @Override
  31. protected void onPostExecute(String s){
  32. if(s.equals("done"))
  33. dotsLoaderView.hide();
  34. }
  35. };
  36. demoAsync.execute();
Step 5
After step 4, sync all the dependency gradles and Mainactivity.java resource files by clicking the Sync button on the top right corner of the Gradle page.
Android
Step 6
Verify the preview.
After the code is applied, the preview will appear like this.
Android
Step 7
Next, go to Android Studio and deploy the application. Select an emulator or your Android mobile with USB debugging enabled. Give it a few seconds to make installations and set permissions.
Android
Run the application in your desired emulator (Shift + F10).
Android
Explanation of source code
The source code provided in this article is just the dependencies of motions and the code used in activity_main.xml will make the dots move and define its attributes.

Summary

In this article, we created the app named Dots Loader, then we have inserted a Gradle and we learned how to give motion to the dot and finally, we have deployed that as an output.
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