GitNex-Android-App/app/src/main/java/org/mian/gitnex/activities/DiffActivity.java

package org.mian.gitnex.activities;

import android.os.Bundle;
import androidx.activity.OnBackPressedCallback;
import org.mian.gitnex.R;
import org.mian.gitnex.databinding.ActivityDiffBinding;
import org.mian.gitnex.fragments.DiffFragment;
import org.mian.gitnex.fragments.PullRequestChangesFragment;

/**
 * @author opyale
 */

public class DiffActivity extends BaseActivity {

	public PullRequestChangesFragment fragment = PullRequestChangesFragment.newInstance();

	@Override
	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		ActivityDiffBinding binding = ActivityDiffBinding.inflate(getLayoutInflater());

		setContentView(binding.getRoot());

		getOnBackPressedDispatcher().addCallback(new OnBackPressedCallback(true) {

			@Override
			public void handleOnBackPressed() {
				if(getSupportFragmentManager().findFragmentById(R.id.fragment_container) instanceof DiffFragment) {
					getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, fragment).commit();
				}
				else {
					finish();
				}
			}
		});

		getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, fragment).commit();

	}

}