通過PackageManager可以判斷android設備是否有相機
PackageManager?pm?=?getPackageManager();//?FEATURE_CAMERA?-?後置相機
//?FEATURE_CAMERA_FRONT?-?前置相機
if?(!pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)
&&?!pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT))?{
Log.i("camera",?"non-support");
}?else?{
Log.i("camera",?"support");
}