Memory-leak-solution-3-singleton-class.java

public class SingletonSampleClass {
  
    private Context mContext;
    private static SingletonSampleClass instance = null;
 
     private SingletonSampleClass(Context context) {
        this.mContext = mContext;
    }

    public synchronized static SingletonSampleClass getInstance(Context mContext) {
        if (instance == null) instance = new SingletonSampleClass(mContext);
        return instance;
    }
  
    public void onDestroy() {
       if(mContext != null) {
          mContext = null; 
       }
    }
}