java - SoundPool 不播放声音

Question

当我尝试在应用程序中启动声音时，它无法播放。我已经看到该方法确实被调用，但是 soundPool 只是不想播放声音。该应用程序按预期启动，但是，它只是不想播放排队的声音。难道是我做错了什么？我尝试播放的音乐文件太大了吗？ (35.4MB)

任何意见都值得赞赏!

StartActivity(相关位)

public class StartActivity extends AppCompatActivity {
    private Button startButton;

    //Sounds
    private SoundManager soundManager;
    private int ambient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.start_activity);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        startButton = (Button) findViewById(R.id.startButton);

        //Setting Up sounds
        soundManager = new SoundManager(this);
        ambient = soundManager.getSoundID(R.raw.music_ambient);

        soundManager.playLoop(ambient);
        Application.setSoundManager(soundManager);

申请

public class Application {
    public static SoundManager soundManager;

    public static SoundManager getSoundManager() {
        return soundManager;
    }

    public static void setSoundManager(SoundManager soundManagerIns) {
        soundManager = soundManagerIns;
    }
}

SoundManager 类

import android.content.Context;
import android.media.SoundPool;
import android.util.Log;

public class SoundManager {

    private Context context;
    private SoundPool soundPool;
    private boolean isPlaying = false;

    SoundManager(Context context) {
        this.context = context;

        SoundPool.Builder builder = new SoundPool.Builder();
        builder.setMaxStreams(10);
        soundPool = builder.build();
    }

    int getSoundID(int resourcesID) {
        return (soundPool.load(context, resourcesID, 1));
    }

    void play(int soundId) {
        soundPool.play(soundId, 1, 1, 1, 0, 1);
    }

    void playLoop(int soundId){
        if(!isPlaying) {
            Log.d("LEADER", "called this");
            soundPool.play(soundId, 1, 1, 1, -1, 1);
            isPlaying = true;
        }
    }

    void stop(int soundId){
        isPlaying = false;
        soundPool.stop(soundId);
    }
}

Answer 1

is the music file I am trying to play just too large? (35.4MB)

情况可能是这样。我见过几个 StackOverflow 答案(包括最近的答案)，声称 SoundPool 每个声音的未压缩内存限制为 1 MB，尽管我无法在官方文档中检查这一点。如果确实如此，您可能会在日志中看到此错误，如https://stackoverflow.com/a/18548242/9543944所述。 :

If your clip is too big in memory, sound pool will fall silent, and you'll find following error: "AudioFlinger could not create track. status: -12"

您应该能够从 Android Studio 内部看到日志，然后您可以过滤错误以更快地搜索上述错误。

如果确实如此，MediaPlayer 可能是一个不错的选择:https://developer.android.com/guide/topics/media/mediaplayer .