James Gathu jamesgathu

## Pull to Refresh.md

      
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                jamesgathu
                / Pull to Refresh.md
            
            
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              June 12, 2018 10:18
            
              
                To add pull to refresh on a TableView
              
          
    Adding Pull to Refresh To iOS tableView

Follow the code below for adding pull to refresh to a tableview


value       


iOS version
11.2


Swift
4


## AudioMerge.swift
/**
provide an array of audio files urls and get them merged
Its important to note that the process is asynchronous and that one would need to show user some sort of a progress indicator
so that the process does not get interupted
- parameter audioFileUrls: an array of audio file urls
- returns String representing the newly merged file or nil for a failure
*/
func mergeAudioFiles(audioFileUrls: [URL]) -> String? {
        let composition = AVMutableComposition()


## CircularImageView.swift
import UIKit

@IBDesignable class CircularImageView: UIImageView {
    @IBInspectable var lineWidth: CGFloat = 2
    @IBInspectable var color: UIColor = UIColor.red


    override func layoutSubviews() {
        super.layoutSubviews()


## UITextView.swift
@IBDesignable
class PlaceHolderTextView: UITextView {

    @IBInspectable var placeholder: String = "" {
         didSet{
             updatePlaceHolder()
        }
    }

    @IBInspectable var placeholderColor: UIColor = UIColor.gray {

## App.js
import React, {Component} from 'react';
import './App.css';
import SideDrawer from "./components/Sidedrawer/side_drawer";

class App extends Component {
    state = {
        sideDrawerOpen: false
    };

    drawerToggleClickHandler = () => {

## auth.py
class JwtTokenAuthMiddleware(BaseMiddleware):
    """
    JWT token authorization middleware for Django Channels 2
    """

    def get_validated_token(self, raw_token):
        """
        Validates an encoded JSON web token and returns a validated token
        wrapper object.
        """

## _JwtTokenAuthMiddleware.md

      
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                jamesgathu
                / _JwtTokenAuthMiddleware.md
            
            
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              May 8, 2019 08:15
            
              
                Simple Jwt Token AuthMiddleware for channels 2.0
              
          
    Incase you are using djangorestframework-simplejwt for authentication and Would like to use channels==2.0.
On web sending token over headers is not possible if using  js WebSocket available API.
To go around this you can send your token on the url as indicated below
wws://example.com?token=[a_valid_token]
The middleware above can be added on routing.py to supply a valid user to the consumer.
NB :: Securitywise this is not advisable to do.

  
## Viewcontroller.swift
class Viewcontroller : UIViewController, UITextViewDelegate{

  override func viewDidLoad(){
    super.viewDidLoad()

    textView.text = "Placeholder"
    textView.textColor = UIColor.lightGray
  }

  func textViewDidBeginEditing(_ textView: UITextView) {

## sample_loading_base_.html
<!DOCTYPE>
<html lang='en'>
<head>
    <title> Loader example </title>
    <style>
        .loading-gif {
            max-width: 500px;
        }

        .pre-loader {

## middlewares.py
from django.conf import settings
from django.contrib.auth import (
    BACKEND_SESSION_KEY,
    HASH_SESSION_KEY,
    SESSION_KEY,
    _get_backends,
    get_user_model,
    load_backend,
    user_logged_in,
    user_logged_out,
	/**
	provide an array of audio files urls and get them merged
	Its important to note that the process is asynchronous and that one would need to show user some sort of a progress indicator
	so that the process does not get interupted
	- parameter audioFileUrls: an array of audio file urls
	- returns String representing the newly merged file or nil for a failure
	*/
	func mergeAudioFiles(audioFileUrls: [URL]) -> String? {
	let composition = AVMutableComposition()
	import UIKit

	@IBDesignable class CircularImageView: UIImageView {
	@IBInspectable var lineWidth: CGFloat = 2
	@IBInspectable var color: UIColor = UIColor.red


	override func layoutSubviews() {
	super.layoutSubviews()
	@IBDesignable
	class PlaceHolderTextView: UITextView {

	@IBInspectable var placeholder: String = "" {
	didSet{
	updatePlaceHolder()
	}
	}

	@IBInspectable var placeholderColor: UIColor = UIColor.gray {
	import React, {Component} from 'react';
	import './App.css';
	import SideDrawer from "./components/Sidedrawer/side_drawer";

	class App extends Component {
	state = {
	sideDrawerOpen: false
	};

	drawerToggleClickHandler = () => {
	class JwtTokenAuthMiddleware(BaseMiddleware):
	"""
	JWT token authorization middleware for Django Channels 2
	"""

	def get_validated_token(self, raw_token):
	"""
	Validates an encoded JSON web token and returns a validated token
	wrapper object.
	"""
	class Viewcontroller : UIViewController, UITextViewDelegate{

	override func viewDidLoad(){
	super.viewDidLoad()

	textView.text = "Placeholder"
	textView.textColor = UIColor.lightGray
	}

	func textViewDidBeginEditing(_ textView: UITextView) {
	<!DOCTYPE>
	<html lang='en'>
	<head>
	<title> Loader example </title>
	<style>
	.loading-gif {
	max-width: 500px;
	}

	.pre-loader {
	from django.conf import settings
	from django.contrib.auth import (
	BACKEND_SESSION_KEY,
	HASH_SESSION_KEY,
	SESSION_KEY,
	_get_backends,
	get_user_model,
	load_backend,
	user_logged_in,
	user_logged_out,