什么是热更新?
举个例子,你的app上架了,但是突然想添加个小功能,那么你有两种方法
第一种方法:在原生代码中修改源代码,然后提交到appStore,这个过程真是很漫长...虽然最近我提交的都是一两天就能得到反馈,但是没人能保证苹果的服务态度一直这样好.有可能10天半个月的也没时间给你审核.我把这个称为冷更新!
第二种方法:就是利用一些三方平台.现在比较火的就是JSPatch之前有(Wax)了. 用官网 的介绍
JSPatch 是一个开源项目(Github链接)，只需要在项目里引入极小的引擎文件，就可以使用 JavaScript 调用任何 Objective-C 的原生接口，替换任意 Objective-C 原生方法。目前主要用于下发 JS 脚本替换原生 Objective-C 代码，实时修复线上 bug。总之我的认识就是:不用通过重新上架app项目到appstore便可以修改一些小问题!很大程度提高了开发以及维护的效率
JSPatch SDK的接入
JSPatch 基础用法
最后就用JSPatch 这个平台打印一个HelloWorld
本地测试
#import "ViewController.h"static NSString *identifer = @"cellID";@interface ViewController ()<UITableViewDataSource, UITableViewDelegate>@property (nonatomic, strong) UITableView *tableView;@end@implementation ViewController- (void)viewDidLoad {
[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.// NSLog(<#NSString * _Nonnull format, ...#>)
[self.view addSubview:self.tableView];
} - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.} - (UITableView *)tableView { if (!_tableView) {
_tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
_tableView.dataSource = self;
_tableView.delegate = self;
[_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:identifer]; } return _tableView;
} - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return 4; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifer]; cell.textLabel.text = [NSString stringWithFormat:@"第%ld行", indexPath.row]; return cell; } - (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath { NSLog(@"OC--第%ld行", indexPath.row);
}@end
//APPDelete.m- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch.// [JSPatch startWithAppKey:@"891dfb388fe263a1"];// [JSPatch sync]; [JSPatch testScriptInBundle]; return YES;
}
然后添加 main.js文件
defineClass("ViewController", {tableView_didSelectRowAtIndexPath: function(tableView, indexPath) { console.log("JSPath--:",indexPath.row()); }})
上面的main.js文件在app启动的时候!会被自动调用:功能就是覆盖ViewController里面的这个方法
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath { NSLog(@"OC--第%ld行", indexPath.row);
}
在调用main.js文件之前
程序的运行结果是这样的
aaarticlea/png;base64,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" alt="" data-ratio="0.5341726618705036" data-src="http://mmbiz.qpic.cn/mmbiz/g4uoJOMA38IEjcicjctFibmgrfULG75fKPibIKnQ8ibG3j5HBz7mo0vcibQhsRlTshHVy0sW3UWUCBiaYibVOYPKjeMBw/0?wx_fmt=gif" data-type="gif" data-w="" />
使用JSPatch之前.gif
在调用main.js文件之后
程序的运行结果是这样的
aaarticlea/png;base64,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" alt="" data-ratio="0.5341726618705036" data-src="http://mmbiz.qpic.cn/mmbiz/g4uoJOMA38IEjcicjctFibmgrfULG75fKPgDNdria0p6EYX8sa3flVxpJXibYrCl6iaHODIw5KNBbAnkMUK274FmU4A/0?wx_fmt=gif" data-type="gif" data-w="" />
使用JSPatch之后.gif
到这里大家应该已经看出了这个JSPatch的强大!这还只是本地测试,当你要修改程序内容的时候得在本地修改main.js文件
线上测试 (其实就是把main.js文件传到JSPathch的后台)
aaarticlea/png;base64,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" alt="" data-ratio="0.6510791366906474" data-src="http://mmbiz.qpic.cn/mmbiz/g4uoJOMA38IEjcicjctFibmgrfULG75fKPZONuIicSosRqe6Szzza460hm8g5vmBprOWmWykPlGZicI9GSwlhJp9Pg/0?wx_fmt=png" data-type="png" data-w="" />
线上发布新补丁.png
然后在APPDelete.m中修改代码
//APPDelete.m- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch.
//891dfb388fe263a1 这个是你在JSPatch后台创建应用的时候自动生成的appKey
[JSPatch startWithAppKey:@"891dfb388fe263a1"];
[JSPatch sync];// [JSPatch testScriptInBundle]; /** 同时删除本地的main.js文件 */ return YES;
}
线上JSPathch.png