MainActivity.java

package codingwithmitch.com.dialogfragmentfragment;


import android.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        MainFragment fragment = new MainFragment();

        FragmentTransaction transaction = getFragmentManager().beginTransaction();
        transaction.replace(R.id.container, fragment, "MainFragment");
        transaction.commit();
    }
}