SingletonLeakExampleActivity.java

public class SingletonLeakExampleActivity extends AppCompatActivity {

    private SingletonSampleClass singletonSampleClass;
    
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
    /* 
     * Option 1: Do not pass activity context to the Singleton class. Instead pass application Context
     */      
        singletonSampleClass = SingletonSampleClass.getInstance(this);
    }
  
    
   @Override
   protected void onDestroy() {
        super.onDestroy();

    /* 
     * Option 2: Unregister the singleton class here i.e. if you pass activity context to the Singleton class, 
     * then ensure that when the activity is destroyed, the context in the singleton class is set to null.
     */
     singletonSampleClass.onDestroy();
   }
}