我正在使用下一个代码。此代码在桌面版本上运行良好,但在 Android 设备上却不行。返回 Gdx.app.getPreferences(PREFS_NAME) 始终为空。为什么?我在哪里会犯错?
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Preferences;
public class BeatlesPreferences {
// constants
private static final String PREF_VIBRO = "vibro";
private static final String PREF_MUSIC_ENABLED = "musicenabled";
private static final String PREF_SOUND_ENABLED = "soundenabled";
private static final String PREFS_NAME = "my_app";
public BeatlesPreferences() {
}
protected Preferences getPrefs() {
return Gdx.app.getPreferences(PREFS_NAME);
}
public boolean isSoundEffectsEnabled() {
return getPrefs().getBoolean(PREF_SOUND_ENABLED, true);
}
public void setSoundEffectsEnabled(boolean soundEffectsEnabled) {
getPrefs().putBoolean(PREF_SOUND_ENABLED, soundEffectsEnabled);
getPrefs().flush();
}
public boolean isMusicEnabled() {
return getPrefs().getBoolean(PREF_MUSIC_ENABLED, true);
}
public void setMusicEnabled(boolean musicEnabled) {
getPrefs().putBoolean(PREF_MUSIC_ENABLED, musicEnabled);
getPrefs().flush();
}
public boolean isVibroEnabled() {
return getPrefs().getBoolean(PREF_VIBRO, true);
}
public void setVibroEnabled(boolean vibro) {
getPrefs().putBoolean(PREF_VIBRO, vibro);
getPrefs().flush();
}
}