BasePresenter.java

package com.template.test.testmvptemplate; // your application package

import android.content.Context;
import android.support.annotation.NonNull;

public class BasePresenter {
  protected Context mContext;
  public void subscribe(@NonNull Context context) {
    this.mContext = context;
  public boolean isSubscribed() {
    return mContext != null;
  }
}