How to start new activity from tab control?

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Android

TabControl

I have home activity which have tab control and on first tab the main activity is shown. On main tab i have buttons which will redirect to another activity.
and cannot redirect to another activity.

What I have tried:

package mobileofflineapp.gopalchudal.mobileofflineapp;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

public class Main1 extends Fragment {
ImageView saving, loan;

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

saving = (ImageView) container.findViewById(R.id.imgSavingCollection);
loan = (ImageView) container.findViewById(R.id.imgLoanCollection);

saving.setOnClickListener((View.OnClickListener) container);
loan.setOnClickListener((View.OnClickListener) container);

View v = inflater.inflate(R.layout.activity_main1, container, false);
return v;
}

public void onClick(View v) {
switch (v.getId()) {
case R.id.imgSavingCollection:
Intent savingactivity = new Intent(v.getContext(), SavingCollection.class);
startActivity(savingactivity);
break;
case R.id.imgLoanCollection:
Intent laonactivity = new Intent(v.getContext(), LoanCollection.class);
startActivity(laonactivity);
break;
}
}