AboutActivity.java

package org.smartpaws;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

public class AboutActivity extends AppCompatActivity {

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

        View mylo = findViewById(R.id.mylo);
        mylo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent;
                try {
                    getPackageManager().getPackageInfo("com.twitter.android", 0);
                    intent = new Intent(Intent.ACTION_VIEW, Uri.parse("twitter://user?user_id=3128675435"));
                    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                } catch (Exception e) {
                    intent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://twitter.com/sillyredfox"));
                }
                startActivity(intent);
            }
        });

        View ralphie = findViewById(R.id.ralphie);
        ralphie.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://furaffinity.net/user/ralphieraccoon")));
            }
        });
    }
}