[Android Studio] SynGreis:
below is my project code. Its a truth or dare sex game i made for my inner friends. I am posting it here because i am looking for suggestions in improving functionality and efficiency. Meaning less lines. I also want to know if there is anything i could do better.

MainActivity.java

package com.example.syn.secretproject;

import android.content.Intent;
import android.graphics.Typeface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView tx = (TextView)findViewById(R.id.msg);
Typeface custom_font = Typeface.createFromAsset(getAssets(), "Aladin-Regular.ttf");
tx.setTypeface(custom_font);
}
public void tf(View view){
Intent myIntent = new Intent(this, TruthFemale.class);
startActivity(myIntent);
}
public void df(View view){
Intent myIntent = new Intent(this, DareFemale.class);
startActivity(myIntent);
}
public void tm(View view){
Intent myIntent = new Intent(this, TruthMale.class);
startActivity(myIntent);
}
public void dm(View view){
Intent myIntent = new Intent(this, DareMale.class);
startActivity(myIntent);
}
}

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
android:background="@drawable/both"
tools:context="com.example.syn.secretproject.MainActivity"
android:id="@+id/rellay">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Welcome Press Start"
android:layout_marginTop="51dp"
android:id="@+id/msg"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textColor="#ffffff"
android:textSize="24dp" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Truth"
android:id="@+id/btnTruthM"
android:layout_below="@+id/msg"
android:layout_alignParentStart="true"
android:layout_marginTop="89dp"
android:onClick="tm"
android:background="#FF2F48EB" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dare"
android:id="@+id/btnDareM"
android:background="#FF2F48EB"
android:onClick="dm"
android:layout_alignTop="@+id/btnTruthM"
android:layout_alignParentEnd="true" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Truth"
android:id="@+id/btnTruthF"
android:layout_marginTop="89dp"
android:background="#e52feb"
android:onClick="tf"
android:layout_below="@+id/btnTruthM"
android:layout_alignParentStart="true" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dare"
android:id="@+id/btnDareF"
android:background="#e52feb"
android:onClick="df"
android:layout_alignTop="@+id/btnTruthF"
android:layout_alignParentEnd="true" />

</RelativeLayout>

And a copy of one of the activities...all the other activities are similar.

package com.example.syn.secretproject;

import android.content.Intent;
import android.graphics.Typeface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import java.util.Random;

public class DareFemale extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dare_female);
String comments[] = {"message 1","message 2","message 3"};
Random rand = new Random();
int number = rand.nextInt(comments.length);
TextView t = (TextView) findViewById(R.id.msg);
t.setText(comments[number]);
Typeface custom_font = Typeface.createFromAsset(getAssets(), "Aladin-Regular.ttf");
t.setTypeface(custom_font);
}
public void tm(View view){
Intent myIntent = new Intent(this, TruthMale.class);
startActivity(myIntent);
}
public void dm(View view){
Intent myIntent = new Intent(this, DareMale.class);
startActivity(myIntent);
}
}

xml code

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
android:background="@drawable/woman"
tools:context="com.example.syn.secretproject.MainActivity"
android:id="@+id/rellay">

<TextView
android:layout_width="200dp"
android:layout_height="200dp"
android:text="Welcome Press Start"
android:layout_marginTop="51dp"
android:id="@+id/msg"
android:textColor="#ffffff"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textSize="24dp" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Truth"
android:id="@+id/btnTruthM"
android:onClick="tm"
android:background="#FF2F48EB"
android:layout_below="@+id/msg"
android:layout_alignStart="@+id/msg" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dare"
android:id="@+id/btnDareM"
android:background="#FF2F48EB"
android:onClick="dm"
android:layout_alignTop="@+id/btnTruthM"
android:layout_alignEnd="@+id/msg" />

</RelativeLayout>

any advice or criticism is welcomed.