高通android9.0 camera API1底层调用为HAL3而非HAL1，若需要调用HAL1的效果，打开摄像头需要按如下方法打开：
try {
Class<?> cameraCalzz = Class.forName("android.hardware.Camera");
Method openLegacy = cameraCalzz.getMethod("openLegacy", int.class, int.class);
camera = (Camera) openLegacy.invoke(null, cameraId, 0x100);//CAMERA_HAL_API_VERSION_1_0 = 0x100
} catch (Exception e) {
e.printStackTrace();
}
具体可参考:https://blog.csdn.net/zhuyong006/article/details/102480557高通android9.0 camera API1底层调用为HAL3而非HAL1
原文：https://www.cnblogs.com/suxiaoqi/p/13032608.html