没有摄像头权限，无法打开摄像头"0“开发者社区

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<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.CAMERA" />

An error occurred while connecting to camera 0: Status(-8, EX_SERVICE_SPECIFIC): '1: validateClientPermissionsLocked:1165: Caller ... (PID 10153, UID 6049) cannot open camera "0" without camera permission'

public static Camera getCameraInstance(){
    Camera c = null;
    try {
        c = Camera.open();
    } catch (Exception e) {
        Log.e("getCameraInstance", "exception", e);
    return c; // returns null if camera is unavailable
}

    public static void checkCameraPermissions(Context context){
        if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED)
            // Permission is not granted

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