SettingsFragment.java 文件源码

private void setupGaplessControlSettingsV14() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
        PreferenceCategory playbackControlSettings =
                (PreferenceCategory) findPreference(Constants.PREFERENCES_KEY_PLAYBACK_CONTROL_SETTINGS);
        CheckBoxPreference gaplessPlaybackEnabled =
                (CheckBoxPreference) findPreference(Constants.PREFERENCES_KEY_GAPLESS_PLAYBACK);

        if (gaplessPlaybackEnabled != null) {
            gaplessPlaybackEnabled.setChecked(false);
            gaplessPlaybackEnabled.setEnabled(false);

            if (playbackControlSettings != null) {
                playbackControlSettings.removePreference(gaplessPlaybackEnabled);
            }
        }
    }
}