I am programming a little game with a background music, but whenever I close the program it continues to play, so I decided to try to stop this player when app closed, and keep playing when I switch to another activity.
But this code does my game crash.
What do I have to do?
Here is the code of Java:
package com.example.caca_a_frase;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Menu extends Activity {
private static Button jogar;
private static Button jogar2;
MediaPlayer player;
public static boolean shouldPlay = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
//Isto faz a música tocar quando carrega a atividade!
player = MediaPlayer.create(this, R.raw.background_music);
player.setLooping(true);
player.setVolume(10f,10f);
player.start();
//Até aqui!
onClickButtonListener();
onClickButtonListener2();
findViewById(R.id.fullscreen_content_controls);
findViewById(R.id.fullscreen_content);
}
//Botão para jogar!
public void onClickButtonListener() {
jogar = (Button) findViewById(R.id.botaoJogar);
final MediaPlayer mp2 = MediaPlayer.create(this, R.raw.click);
jogar.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
mp2.start();
Intent intent = new Intent("com.example.caca_a_frase.Jogo");
startActivity(intent);
}
}
);
//Acaba aqui!
//Botão para saír!
Button sair = (Button) findViewById(R.id.botaoSair);
final MediaPlayer mp = MediaPlayer.create(this, R.raw.click);
sair.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mp.start();
createDialog();
}
private void createDialog() {
AlertDialog.Builder alertDlg = new AlertDialog.Builder(Menu.this);
alertDlg.setMessage("Tens a certeza que queres saír?");
alertDlg.setCancelable(false);
alertDlg.setPositiveButton("Sim", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
System.exit(0);
}
});
alertDlg.setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
alertDlg.create().show();
}
});
}
//Acaba aqui!
//Botão para Opções!
public void onClickButtonListener2() {
jogar2 = (Button) findViewById(R.id.botaoOpcoes);
final MediaPlayer mp3 = MediaPlayer.create(this, R.raw.click);
jogar2.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
mp3.start();
Intent intent = new Intent("com.example.caca_a_frase.Opcoes");
startActivity(intent);
}
}
);
}
//Acaba aqui!
//Quando carrega voltar.
@Override
public void onBackPressed() {
createDialog();
}
private void createDialog() {
AlertDialog.Builder alertDlg = new AlertDialog.Builder(Menu.this);
alertDlg.setMessage("Tens a certeza que queres saír?");
alertDlg.setCancelable(false);
alertDlg.setPositiveButton("Sim", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
System.exit(0);
}
});
alertDlg.setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
alertDlg.create().show();
}
//Acaba aqui!
//Quando aplicação é fechada!
public void onStop() {
super.onStop();
if (shouldPlay == false) { // it won't pause music if shouldPlay is true
player.pause();
}
}
public void onResume() {
if (shouldPlay == false) { // it won't pause music if shouldPlay is true
player.start();
}
}
//Acaba aqui!
}
