content: package com.gosuncn.mpa;
  
  import android.content.Intent;
  import android.os.Bundle;
  import android.support.v7.app.AppCompatActivity;
  import android.view.View;
  
  import com.gosuncn.mpa.player1.TestPlayer1Activity;
  import com.gosuncn.mpa.player2.TestPlayer2Activity;
  import com.gosuncn.mpa.player3.TestPlayer3Activity;
  
  public class MainActivity extends AppCompatActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
      }
  
      public void onPlayer1Click(View view) {
          Intent intent = new Intent(this, TestPlayer1Activity.class);
          startActivity(intent);
      }
      public void onPlayer2Click(View view) {
          Intent intent = new Intent(this, TestPlayer2Activity.class);
          startActivity(intent);
      }
      public void onPlayer3Click(View view) {
          Intent intent = new Intent(this, TestPlayer3Activity.class);
          startActivity(intent);
      }
      public void onComparisonClick(View view) {
          Intent intent = new Intent(this, CompareActivity.class);
          startActivity(intent);
      }
  }
  