CameraSettingsActivity.java 文件源码

/**
 * Depending on camera availability on the device, this removes settings
 * for cameras the device doesn't have.
 */
private void setVisibilities() {
    PreferenceGroup resolutions =
            (PreferenceGroup) findPreference(PREF_CATEGORY_RESOLUTION);
    if (mPictureSizesBack == null) {
        recursiveDelete(resolutions,
                findPreference(Keys.KEY_PICTURE_SIZE_BACK));
        recursiveDelete(resolutions,
                findPreference(Keys.KEY_VIDEO_QUALITY_BACK));
    }
    if (mPictureSizesFront == null) {
        recursiveDelete(resolutions,
                findPreference(Keys.KEY_PICTURE_SIZE_FRONT));
        recursiveDelete(resolutions,
                findPreference(Keys.KEY_VIDEO_QUALITY_FRONT));
    }
}