在Android设备上判断设备是否支持摄像头
private boolean hasCamera(){ boolean hasCamera=false; PackageManager pm=getActivity().getPackageManager(); hasCamera=pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)||pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)|| Build.VERSION.SDK_INT<Build.VERSION_CODES.GINGERBREAD||Camera.getNumberOfCameras()>0; return hasCamera; }
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