h5如何调app的方法如何上传参数
时间: 2024-01-21 11:19:49 浏览: 114
要调用APP的方法并上传参数,需要使用Javascript桥接技术。下面是一些基本的步骤:
1. 在APP中定义可以被Javascript调用的方法,例如:
```
- (void)showAlert:(NSString *)message;
```
2. 在Javascript中使用桥接技术调用该方法,例如:
```
window.location = "myapp://showAlert?message=Hello";
```
3. 在APP中拦截该URL并执行相应的方法:
```
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
if ([[url scheme] isEqualToString:@"myapp"]) {
if ([[url host] isEqualToString:@"showAlert"]) {
NSString *message = [[url query] stringByReplacingOccurrencesOfString:@"message=" withString:@""];
[self showAlert:message];
}
return YES;
}
return NO;
}
```
在上述示例中,我们可以看到Javascript通过“myapp”协议调用了“showAlert”方法,并上传了一个字符串参数“Hello”。在APP中通过拦截URL的方式解析出该参数,并执行了相应的方法。
注意:在使用桥接技术时,需要确保APP中已经注册了相应的URL Scheme,并且Javascript中使用的URL Scheme和APP中注册的URL Scheme相同。
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