Brain  Crist

Brain Crist

1602241200

Change Notifier & Selector In Provider

Introduction

Today we are going to talk about Provider inherited widget that is Selector furthermore we will also look into changenotifierprovider

What is the Selector?

The Selector is a widget that is equivalent to **Consumers **that can filter updates by selecting a limited amount of values and it prevents rebuilds if they don’t change.

How to use:

Below I am gonna have a simple example of how to use a selector with a change notifier.

Image for post

Example to user Selector

You will need two types, first one is an inherited widget _(i.e. you can use _ChangeNotifier_or simple _Provider_as both of them are inherited widget.) the next type is specific ValueDatatypethat you want to get your child or builder method you can say, then in the parameter,selector:the first one is the context and the second is the inherited widget that you have created ChangeNotifiertherefore we are listening to the change notifier and read the exact property of the object which fits the value data type that we have created ValueDatatype**. _**So if the value herein changeNotifier.valueis an integer then ValueDatatypeis also an integer.

So you could see that Selector is very particular on the data type that it is listening to, Then in the builder:the parameter you have three arguments so the first one you might have already guessed it contextand then the second one the valuethat is returning from changeNotifier and the last one is the child widget, then we will pass in thevalueinto our Text Widget.

#state-management #cross-platform #mobile-app-development #provider #flutter

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Change Notifier & Selector In Provider
Abdullah  Kozey

Abdullah Kozey

1640098800

A light wrapper around Objective-C Runtime

A light wrapper around Objective-C Runtime.

What exactly is lumos?

lumos as mentioned is a light wrapper around objective-c runtime functions to allow an easier access to the runtime. It makes operations such as swizzling and hooking very simple in Swift.

For example, say you wish to run a block of code whenever a ViewController's viewDidLoad method is called

With lumos, you can do the following:

// In AppDelegate (or any conveinient place)..

let method = Lumos.for(ViewController.self).getInstanceMethod(selector: #selector(ViewController.viewDidLoad))
        
method?.prepend {
    // This block will be run every time a viewDidLoad is called
    print("View Controller loaded")
}

Similarily you can append a block to a method which will be called right before the method returns. You can even use replace to replace the method's implementation with the block you pass in as a parameter.

If you wanted more flexibility, you could swizzle the viewDidLoad method using the following lines:

@objc func myMethod() {
    // Do anything here
}

let myMethod = self.lumos.getInstanceMethod(selector: #selector(myMethod))

method?.swapImplementation(with: myMethod)

Do you feel the superpower yet? Maybe you wish to list all the classes registered at runtime:

Lumos.getAllClasses()

Fun Fact: There are almost 12,000 classes registered at runtime Try Lumos.getAllClasses().count

You could get the class hierarchy of any class just with:

myObject.lumos.getClassHierarcy()   // For UIView: [UIView, UIResponder, NSObject]

Fun Fact: Some classes such as URLSessionTask are actually dummy classes which are replaced with underlying classes such as __NSCFLocalSessionTask during runtime.

With lumos, you can iterate through variables, functions, protocols etc and meddle with them at runtime. Have fun exploring!

Usage

Just incantate .lumos on any instance of a NSObject subclass or use Lumos.for(object) for where object is of type AnyClass, AnyObject, Protocol, Ivar, objc_property_t or objc_property_attribute_t.

LMMethod Methods LMClass Methods

P.s The code itself is the documentation for now. There are many more methods that lumos offers which are not discussed in this document. Cheers :)

Why lumos?

The Objective-C Runtime provides many powerful methods to manipulate objects, classes and methods at runtime. Although disasterous when misused, these methods provide a great way to peek into the runtime and meddle with it.

However, the methods are not exactly easy to use sometimes. For example the following method is used to obtain a list of all classes registered at runtime:

func objc_getClassList(_ buffer: AutoreleasingUnsafeMutablePointer<AnyClass>?, _ bufferCount: Int32) -> Int32

Often, a lot of dirty work needs to be done before one gets the list out. Here is how I would do it:

static func getClassList() -> [AnyClass] {
    let expectedClassCount = objc_getClassList(nil, 0)
    let allClasses = UnsafeMutablePointer<AnyClass?>.allocate(capacity: Int(expectedClassCount))

    let autoreleasingAllClasses = AutoreleasingUnsafeMutablePointer<AnyClass>(allClasses)
    let actualClassCount: Int32 = objc_getClassList(autoreleasingAllClasses, expectedClassCount)

    var classes = [AnyClass]()
    for i in 0 ..< actualClassCount {
        if let currentClass: AnyClass = allClasses[Int(i)] {
            classes.append(currentClass)
        }
    }

    allClasses.deallocate()
    return classes
}

Now all you would need to do to obtain the list of classes would be to invoke this method. Maybe you wish to get a list of classes that conform to a certain protocol:

static func classesImplementingProtocol(_ requiredProtocol: Protocol) -> [AnyClass] {
    return Lumos.getClassList().filter { class_conformsToProtocol($0, requiredProtocol) }
}

Perhaps you wish to swizzle method implementations at runtime:

static func swizzle(originalClass: AnyClass, originalSelector: Selector, swizzledClass: AnyClass, swizzledSelector: Selector) {
    guard let originalMethod = class_getInstanceMethod(originalClass, originalSelector),
    let swizzledMethod = class_getInstanceMethod(swizzledClass, swizzledSelector) else {
        return
    }

    let didAddMethod = class_addMethod(originalClass, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))

    if didAddMethod {
        class_replaceMethod(originalClass, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod))
    } else {
        method_exchangeImplementations(originalMethod, swizzledMethod);
    }
}

You can now use:

Lumos.swizzle(originalClass: URLSessionTask,
              originalSelector: #selector(URLSessionTask.resume),
              swizzledClass: SwizzledSessionTask,
              swizzledSelector: #selector(SwizzledSessionTask.resume))

P.S you might want to use dispatch_once with the method above to above swizzling more than once across multiple threads.

Installation

CocoaPods

CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command:

$ gem install cocoapods

To integrate lumos into your Xcode project using CocoaPods, specify it in your Podfile:

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '10.0'
use_frameworks!

target '<Your Target Name>' do
    pod 'Lumos'
end

Then, run the following command:

$ pod install

License

Lumos is released under the Apache-2.0. See LICENSE for details.

Author: sushinoya
Source Code: https://github.com/sushinoya/Lumos
License: Apache-2.0 License

#objective-c 

Brain  Crist

Brain Crist

1602241200

Change Notifier & Selector In Provider

Introduction

Today we are going to talk about Provider inherited widget that is Selector furthermore we will also look into changenotifierprovider

What is the Selector?

The Selector is a widget that is equivalent to **Consumers **that can filter updates by selecting a limited amount of values and it prevents rebuilds if they don’t change.

How to use:

Below I am gonna have a simple example of how to use a selector with a change notifier.

Image for post

Example to user Selector

You will need two types, first one is an inherited widget _(i.e. you can use _ChangeNotifier_or simple _Provider_as both of them are inherited widget.) the next type is specific ValueDatatypethat you want to get your child or builder method you can say, then in the parameter,selector:the first one is the context and the second is the inherited widget that you have created ChangeNotifiertherefore we are listening to the change notifier and read the exact property of the object which fits the value data type that we have created ValueDatatype**. _**So if the value herein changeNotifier.valueis an integer then ValueDatatypeis also an integer.

So you could see that Selector is very particular on the data type that it is listening to, Then in the builder:the parameter you have three arguments so the first one you might have already guessed it contextand then the second one the valuethat is returning from changeNotifier and the last one is the child widget, then we will pass in thevalueinto our Text Widget.

#state-management #cross-platform #mobile-app-development #provider #flutter

Change AOL Password - How To Change AOL Password In Chrome Browser

This is image title
If you can’t sign into an AOL email account, simply because you’ve forgotten the password? and Do you want to know How To Change AOL Password In Chrome Browser? you’re at the right place to seek out the instructions for reset aol password.

If you’ve cleared the cache in your Chrome Browser browser, but still experiencing issues, you’ll have to restore its original settings. this will remove adware, get obviate extensions you didn’t install, and improve overall performance. Restoring your browser’s default settings also will reset chrome browser security settings. A reset may delete other saved info like bookmarks, stored passwords, and your homepage. Confirm what info your chrome browser will eliminate before resetting and confirm to save lots of any info you do not want to lose.

In this article, I’m going to share all the methods for Change AOL Email Password. you ought to try one among them to Reset AOL Password In Chrome Browser by yourself.

How to Solve Forgot AOL Mail Password?

Steps for Change AOL Mail Password-
Before I will be able to share any instructions about the way to Change AOL Mail Password, I want to inform you, you ought to have access to a minimum of one recovery option. So you’ll plow ahead and reset your AOL password.

  • Open an internet browser on your computer like- internet explorer, google chrome, or Mozilla Firefox.
  • Go to aol.com
  • Now click on check-in.
  • Below the username and password box, you’ll see the forget password option. So click thereon.
  • Now, this may ask you for your email address. So you would like to type your email address and click on the continue button.
  • Here you would like to prove that you simply aren’t a robot. So simply accept the captcha code and click on continue again.
  • After proving you’re not the robot, you’ll reach the subsequent screen. Here it’ll invite account verification.

For verifying the account ownership, you’ll plow ahead and choose anybody’s verification method, like- phone, security questions, etc. and verify the account ownership.

Be careful once you are verifying your account. One wrong step can also block your account.

  1. Phone Verification – if you’ll choose phone verification for verifying the account ownership, you’ll get a code on your phone via call or SMS. that you simply need to enter into your computer.

  2. Security questions- this is often the very easy method to verify the account ownership. All you would like to try to just answer the safety questions. Whatever you’ve got found out.

If you’ll verify the account ownership successfully, then you’ll reach the new password window. So you’ll create your password now. But whenever you’re creating the password, confirm you’re making a posh password.

After resetting the password, you’ll plow ahead and check out to login to your AOL account with a replacement password.

Furthermore, if you would like a moment solution for any AOL mail-related all query, you’ll contact our email customer care team. The professionals will assist you with the flowchart to vary your password or add a replacement account. you’re liberal to connect with us 24*7. Share your problem and obtain a reliable solution within a couple of seconds. Are you the one trying to attach AOL Customer Service? Contact us at +1-888-857-5157 and you can also visit our website.

Source: https://sites.google.com/view/recover-change-aol-key/blogs/how-to-change-aol-password-in-chrome-browser

#change aol password in chrome browser #change aol email password in chrome browser #change aol mail password in chrome browser

Nicole Bennet

1625654450

How to Change Outlook Password?

You can reset the password directly from Outlook’s account information settings. Just follow these steps to know how to change Outlook password on computer. First, click the “File” tab and locate the “Account Information’’ section. Now select “Account Settings.” Then choose your email account and click “Change.” Type your new password. It must match the password used by your POP3 or IMAP email account. Tap “Next” and then click “Finish” to complete the process.

#how to change outlook password on computer #change outlook password #how to change outlook password on iphone

Bella Callen

1619877106

HOW TO #CHANGE OR RESET AT&T EMAIL PASSWORD?

This is image title

CHANGE OR RESET AT&T EMAIL PASSWORD

AT&T is one of the leading internet service providers in the United States and Canada. Apart from the Internet, AT&T also provides an email service to its users. Like any other email account, the AT&T webmail account is also secured by the user ID and password combination. It is obvious that a large number of users Change AT&T Email Password to keeps secure their email account. In this blog, we will provide some easiest steps to change or reset the AT&T email password.

There Are Two Ways to Change Your Password For AT&T Email Account:

  1.  Reset your password without the current password.
    
  2.  Change your password with the current password
    

Here we will discuss both the methods of changing the password so that you can easily rest or change your AT&T email account password, whenever they need it.

Reset AT&T Email Password When You Don’t Know the Password
If you have forgotten your AT&T email password, and you need to reset the AT&T email account password. Then follow the below method to recover your AT&T email account without the current password.

Step 1: First, go to the AT&T page login webpage. Click on “Forgot Password” to open the recovery page.

Step 2: Now, you need to provide your AT&T email address or User ID in the respective field. Then, click on the “Continue” button.

Step 3: Now, you need to select “I’ll answer my security questions”. This recovery method is the best for you to know the answers to the questions that you set at the time of sign-up. If you can’t answer the questions, you can use an alternate email address to receive your password.

Step 4: In the alternate email address section, you need to provide the email address that is associated with your email account. Then, AT&T will share the verification code on the alternate email address.

Step 5: Alternatively, you can select “Text me the code” or “Call me the code” if you have your phone number associated with your account. You will receive the recovery code on your phone.

Step 6: After confirming your identity, you need to create a new password for your AT&T email account and then retype it to confirm. Now you can access your account using the new password.

Change AT&T Email Password: When You have the Password
It is very easy to change your AT&T email address when you know your current account password. There are few simple steps that are needed to be followed to change your AT&T account password.

Step 1: Go to the AT&T login page and type your email address or User ID.

Step 2: Now, click on “My Profile” and scroll down to get the “Set Password” link.

Step 3: Type your current password to verify your authorization on the account and then enter New Password, and type it again in Confirm New Password. Now, sign-in again using your new password.

Once you have completed these steps, you should have access to your AT&T Email account. If you still face the same issues and you need technical help related to Reset AT&T Email Password. Then contact our AT&T Email support team member you can dial our toll-free +1-855-709-0346 number and get instant help from our email expertise person. Our AT&T Email support team available 24*7.
Source URL: https://sites.google.com/view/change-or-reset-att-email-pass/home

#change at&t email password #change at&t mail password #change at&t password