ACCESS_LOCATION_EXTRA_COMMANDS
ACCESS_NETWORK_STATE
ACCESS_NOTIFICATION_POLICY
ACCESS_WIFI_STATE
BLUETOOTH
BLUETOOTH_ADMIN
BROADCAST_STICKY
CHANGE_NETWORK_STATE
CHANGE_WIFI_MULTICAST_STATE
CHANGE_WIFI_STATE
DISABLE_KEYGUARD
EXPAND_STATUS_BAR
GET_PACKAGE_SIZE
INTERNET
KILL_BACKGROUND_PROCESSES
MODIFY_AUDIO_SETTINGS
NFC
READ_SYNC_SETTINGS
READ_SYNC_STATS
RECEIVE_BOOT_COMPLETED
REORDER_TASKS
REQUEST_INSTALL_PACKAGES
SET_TIME_ZONE
SET_WALLPAPER
SET_WALLPAPER_HINTS
TRANSMIT_IR
USE_FINGERPRINT
VIBRATE
WAKE_LOCK
WRITE_SYNC_SETTINGS
SET_ALARM
INSTALL_SHORTCUT
UNINSTALL_SHORTCUT

object MQPermissionUtil {
 private var mRequestCode = -1
 private val isOverMarshmallow: Boolean = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
 private var mOnPermissionListener: OnPermissionListener? = null

 fun requestPermissions(activity: Activity, requestCode: Int, permissions: Array<String>, isCancelFinish: Boolean, onPermissionGrantedListener: OnPermissionGrantedListener) {
  requestPermissionsResult(activity, requestCode, permissions, object : OnPermissionListener {
   override fun onPermissionGranted() {
    onPermissionGrantedListener.onPermissionGranted()
   }

   override fun onPermissionDenied() {
    if (isCancelFinish) {
     showTipsDialogWel(activity)
    } else {
     showTipsDialog(activity)
    }
   }
  })
 }

 private fun requestPermissionsResult(activity: Activity, requestCode: Int, permissions: Array<String>, callback: OnPermissionListener) {
  mOnPermissionListener = callback
  if (checkPermissions(activity, *permissions)) {
   if (mOnPermissionListener != null)
    mOnPermissionListener!!.onPermissionGranted()
  } else {
   val deniedPermissions = getDeniedPermissions(activity, *permissions)
   if (deniedPermissions.isNotEmpty()) {
    mRequestCode = requestCode
    ActivityCompat.requestPermissions(activity, deniedPermissions
      .toTypedArray(), requestCode)
   }
  }
 }

 fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
  if (requestCode == mRequestCode) {
   if (verifyPermissions(grantResults)) {
    if (mOnPermissionListener != null)
     mOnPermissionListener!!.onPermissionGranted()
   } else {
    if (mOnPermissionListener != null)
     mOnPermissionListener!!.onPermissionDenied()
   }
  }
 }

 private fun startAppSettings(context: Context) {
  val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
  intent.data = Uri.parse("package:" + context.packageName)
  context.startActivity(intent)
 }

 private fun verifyPermissions(grantResults: IntArray): Boolean {
  if (grantResults.isEmpty())
   return false

  // 循环判断每个权限是否被拒绝
  for (grantResult in grantResults) {
   if (grantResult != PackageManager.PERMISSION_GRANTED) {
    return false
   }
  }
  return true
 }

 private fun getDeniedPermissions(context: Context, vararg permissions: String): List<String> {
  val deniedPermissions = ArrayList<String>()
  for (permission in permissions) {
   if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_DENIED) {
    deniedPermissions.add(permission)
   }
  }
  return deniedPermissions
 }


 private fun checkPermissions(context: Context, vararg permissions: String): Boolean {
  if (isOverMarshmallow) {
   for (permission in permissions) {
    if (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_DENIED) {
     return false
    }
   }
  }
  return true
 }

 fun showTipsDialog(activity: Activity) {
  AlertDialog.Builder(activity)
    .setTitle("提示信息")
    .setMessage("当前应用缺少必要权限，無法正常使用，请单击【确定】按钮前往设置中心进行权限授权。")
    .setNegativeButton("取消", null)
    .setPositiveButton("确定") { _, _ ->
     activity.finish()
     startAppSettings(activity)
    }.show()
 }

 fun showTipsDialogWel(activity: Activity) {
  AlertDialog.Builder(activity)
    .setTitle("提示信息")
    .setMessage("当前应用缺少必要权限，無法正常使用，请单击【确定】按钮前往设置中心进行权限授权。")
    .setNegativeButton("取消") { _, _ -> activity.finish() }
    .setPositiveButton("确定") { _, _ ->
     activity.finish()
     startAppSettings(activity)
    }.show()
 }

 interface OnPermissionGrantedListener {
  fun onPermissionGranted()
 }

 interface OnPermissionListener {
  fun onPermissionGranted()
  fun onPermissionDenied()
 }
}

MangoPermissionUtil.requestPermissions(this@IndexActivity, Constant.PERMISSION_OPERATION_CODE_SCAN, arrayOf(Manifest.permission.CAMERA), false, object : MangoPermissionUtil.OnPermissionGrantedListener {
 override fun onPermissionGranted() {
  //在这表示用户同意了权限申请。
  //假如用户拒绝了权限申请在这儿我是没让他进入到应用中的效果如下
 }
})

override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
 MangoPermissionUtil.onRequestPermissionsResult(requestCode, permissions, grantResults)
 super.onRequestPermissionsResult(requestCode, permissions, grantResults)
}