1、CameraDeviceExt.java文件修改，将String ratioString = supportedRatios.get(supportedRatios.size() - 1);修改为String ratioString = supportedRatios.get(0);
2、SettingUtils.java文件修改：ratioString = supportedRatios.get(supportedRatios.size() - 1);改为ratioString = supportedRatios.get(0);