package com.iutlaval.myapplication; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button playButton = (Button) findViewById(R.id.playButton); playButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Toast.makeText(getApplicationContext(), "click sur button", Toast.LENGTH_LONG).show(); Intent gameActivity = new Intent(MainActivity.this, GameActivity.class); startActivity(gameActivity); } }); } }