Personal Summary of hot update and Hotfix, and summary of hot update and repair

Personal Summary of hot update and Hotfix, and summary of hot update and repair

Hotfix and hotupdate

1. Hot update and Hotfix: Online BUG fixes

2. How JSPach works: OC is a language for dynamic runtime, and method runtime and object creation are created during runtime. JSPatch uses JavaScriptCore. as a JS engine, framework dynamically calls methods and objects from JS to OC, and then uses NSInvocation to dynamically call corresponding methods. example

Class class = NSClassFromString (@ "UIViewController ");

Id controller = [class new];

SEL selector = NSSelectorFromString (@ "viewDidLoad ");

[Controller extends mselector: selector];

3 Procedure

Drag the JSPatch folder to the file and drag the dome. js file downloaded from gitHub to the project. In APPDelegate:

# Import "AppDelegate. h"

# Import "JPEngine. h"

# Import "ViewController. h"

 

@ Interface AppDelegate ()

 

@ End

 

@ Implementation AppDelegate

 

-(BOOL) application :( UIApplication *) application didfinishlaunchingwitexceptions :( NSDictionary *) launchOptions {

[JPEngine startEngine];

 

NSString * jsPath = [[NSBundle mainBundle] pathForResource: @ "demo. js" ofType: nil];

[JPEngine evaluateScriptWithPath: jsPath];

 

Self. window = [[UIWindow alloc] initWithFrame: [UIScreen mainScreen]. bounds];

ViewController * rootViewController = [[ViewController alloc] init];

UINavigationController * navigationController = [[UINavigationController alloc] initWithRootViewController: rootViewController];

Self. window. rootViewController = navigationController;

[Self. window makeKeyAndVisible];

 

Return YES;

}

 

@ End

 

And implemented in ViewController. m

-(Void) viewDidLoad {

[Super viewDidLoad];

 

UIButton * btn = [[UIButton alloc] initWithFrame: CGRectMake (0,100, [UIScreen mainScreen]. bounds. size. width, 50)];

[Btn setTitle: @ "Push JPTableViewController" forState: UIControlStateNormal];

[Btn addTarget: self action: @ selector (handleBtn :) forControlEvents: UIControlEventTouchUpInside];

[Btn setBackgroundColor: [UIColor grayColor];

[Self. view addSubview: btn];

}

 

-(Void) handleBtn :( UIButton *) btn {

 

}

Change JSViewController in dome. js to ViewController.

 

React Native

Literacy

Note

Use this article to write a good link: https://zhuanlan.zhihu.com/p/19996445