一、 H5上代码的对接要点：1.Object类型的传参、2.同一个与app交互的JS方法、3.脚本方法需内嵌到head里面。
Objective-C和JavaScript交互的那些事
点击调用原生代码并传递参数 二、 IOS上的代码对接 注意点：#import需放在.h文件中 #import"ViewController.h"#import@interfaceViewController ()@property (nonatomic)UIWebView*webView;
@property(nonatomic)JSContext *jsContext;
@property(nonnull,strong) UIButton *btn;
@end
@implementationViewController
-(void)viewDidLoad{
[super viewDidLoad];
self.webView = [[UIWebViewalloc]initWithFrame:self.view.bounds];
self.webView.delegate = self;
[self.view addSubview:_webView];
NSString *str = [[NSBundle mainBundle]pathForResource:@"migi" ofType:@"html"];
[self.webView loadRequest:[NSURLRequestrequestWithURL:[NSURL fileURLWithPath:@"f"]]];
// 在上面添加一个按钮，实现oc端控制h5实现弹alert方法框
self.btn = [[UIButton alloc]initWithFrame:CGRectMake(100,400, 100, 40)];
self.btn.backgroundColor = [UIColorredColor];
[self.btn addTarget:selfaction:@selector(showAlert) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.btn];
}
-(void)showAlert
{
//要将script的alert()方法转化为string类型
NSString *alertJs=@"alert('Hello Word')";
[_jsContext evaluateScript:alertJs];
}
-(void)webViewDidFinishLoad:(UIWebView*)webView{
_jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
_jsContext[@"startFunction"] =^(id obj){
////这里通过block回调从而获得h5传来的json数据
/*block中捕获JSContexts
我们知道block会默认强引用它所捕获的对象，如下代码所示，如果block中直接使用context也会造成循环引用，这使用我们最好采用[JSContext currentContext]来获取当前的JSContext:
*/
[JSContext currentContext];
NSData *data = [(NSString *)objdataUsingEncoding:NSUTF8StringEncoding ];
NSDictionary *dict =[NSJSONSerialization JSONObjectWithData:dataoptions:NSJSONReadingMutableContainers error:nil];
NSLog(@"data %@ ====== ShareUrl %@",obj,dict[@"shareUrl"]);
};
//
_jsContext.exceptionHandler = ^(JSContext*context, JSValue *exceptionValue) {
context.exception = exceptionValue;
//比如把js中的方法名改掉，OC找不到相应方法，这里就会打印异常信息
NSLog(@"异常信息：%@", exceptionValue);
};
_jsContext[@"testFunction"] =^(id obj){
//这里通过block回调从而获得h5传来的json数据
[JSContext currentContext];
NSData *data = [(NSString *)obj dataUsingEncoding:NSUTF8StringEncoding ];
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
// NSLog(@" data %@ ====== ShareUrl%@",obj,dict[@"shareUrl"]);
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:dict[@"title"] message:dict[@"content"] delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:nil, nil];
[alertView show];
};
}
-(BOOL)webView:(UIWebView *)webViewshouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
NSURL * url = [requestURL];
//NSLog(@"scheme信息：%@", [urlscheme]);
if ([[url scheme] isEqualToString:@"testfunction"])
{
NSArray *params =[url.query componentsSeparatedByString:@"&"];
NSMutableDictionary *tempDic = [NSMutableDictionary dictionary];
for (NSString *paramStr in params) {
NSArray *dicArray = [paramStr componentsSeparatedByString:@"="];
if (dicArray.count > 1) {
NSString *decodeValue =[dicArray[1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[tempDic setObject:decodeValue forKey:dicArray[0]];
}
}
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:tempDic[@"title"] message:tempDic[@"content"] delegate:self cancelButtonTitle:@"收到" otherButtonTitles:nil];
[alertView show];
NSLog(@"tempDic:%@",tempDic);
return NO;
}
return true; //为yes加载内容，否则不
}
网友评论