How to implement Android Pull-to-Refresh

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Finally, Google released an official version of the pull-to-refresh library!

It is called SwipeRefreshLayout, inside the support library, and the documentation is here:

  1. Add SwipeRefreshLayout as a parent of view which will be treated as a pull to refresh the layout. (I took ListView as an example, it can be any View like LinearLayout, ScrollView etc.)

     <android.support.v4.widget.SwipeRefreshLayout
     android:id="@+id/pullToRefresh"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
     <ListView
         android:id="@+id/listView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"/>
 </android.support.v4.widget.SwipeRefreshLayout>

  2. Add a listener to your class

     protected void onCreate(Bundle savedInstanceState) {
     final SwipeRefreshLayout pullToRefresh = findViewById(R.id.pullToRefresh);
     pullToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
         @Override
         public void onRefresh() {
             refreshData(); // your code
             pullToRefresh.setRefreshing(false);
         }
     });
 }

You can also call pullToRefresh.setRefreshing(true/false); as per your requirement.

UPDATE

Android support libraries have been deprecated and have been replaced by AndroidX. The link to the new library can be found here.

Also, you need to add the following dependency to your project:

implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'

OR

You can go to Refactor>>Migrate to AndroidX and Android Studio will handle the dependencies for you.

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