package project.schafkopfzaehler_2; import android.content.Intent; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; public class StartActivity extends AppCompatActivity { private Button startButton; private Button nextButton; private String players[] = {"", "", "", ""}; private View.OnClickListener startClickListener = new View.OnClickListener() { @Override public void onClick (View v) { if (v == startButton) { startButtonClicked(); } if (v == nextButton) { nextButtonClicked(); } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.start_activity); startButton = findViewById(R.id.startChoosePlayers); startButton.setOnClickListener(startClickListener); Log.d("Start", "onCreate"); } @Override protected void onPause() { super.onPause(); } @Override protected void onResume() { super.onResume(); } @Override protected void onRestart() { super.onRestart(); } @Override protected void onStart() { super.onStart(); } private void startButtonClicked() { setContentView(R.layout.chooseplayers); nextButton = findViewById(R.id.startMain); nextButton.setOnClickListener(startClickListener); } private void nextButtonClicked() { // Get entered player names and store them in the players array Log.d("Start", "nextButtonClicked --> Get player names"); EditText player1 = findViewById(R.id.player1); EditText player2 = findViewById(R.id.player2); EditText player3 = findViewById(R.id.player3); EditText player4 = findViewById(R.id.player4); // Raise error message if entry is empty if ( player1.getText().toString().equals("") ) { player1.setError(getString(R.string.emptyName)); } else { players[0] = player1.getText().toString(); } if ( player2.getText().toString().equals("") ) { player2.setError(getString(R.string.emptyName)); } else { players[1] = player2.getText().toString(); } if ( player3.getText().toString().equals("") ) { player3.setError(getString(R.string.emptyName)); } else { players[2] = player3.getText().toString(); } if ( player4.getText().toString().equals("") ) { player4.setError(getString(R.string.emptyName)); } else { players[3] = player4.getText().toString(); } Log.d("Start", "nextButtonClicked --> Intent follows"); Intent intent = new Intent(this, MainGameActivity.class); intent.putExtra("playerNames", players); startActivity(intent); } }