URL Schemes的作用

IOS之URL Scheme的使用（可以在app之间调用传递数据）

iOS实现一个应用去handle另一个应用（一个App打开另外一个App）   

1.我们平时进行授权的时候,就是去打开第三方并且把我们写的那个urlScheme传给第三方(为了授权成功后,第三方能找到我们应用的urlScheme),然后打开第三方应用,第三方应用再根据我们传过去的urlScheme,去打开我们的应用,并且传值给我们

2.打开应用是NSURL *url = [NSURL URLWithString:@"callAPP://callapp://str==123456"];

[[UIApplication sharedApplication] openURL:url];

获取到的url.scheme为"TestB",url.host为callsuccess,

url.scheme:callAPP

url.host:callapp

url.resourceSpecifier://callapp://str==123456

url.absoluteString:callAPP://callapp://str==123456

absoluteURL:callAPP://callapp://str==123456

host:callapp

path://str==123456

relativePath://str==123456

2.//当应用程序被其他程序打开的时候会调用这个方法，在该方法中可以实现两个应用程序间的数据局传递

//通过这个代理方法可以拦截url

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation

{

NSString *urlStr = [url absoluteString];

if ([urlStr hasPrefix:@"AppA://"]) {

urlStr = [urlStr stringByReplacingOccurrencesOfString:@"AppA://" withString:@""];//参数就在url，传值也在里面

}

return NO;

}

3.- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url

sourceApplication:(NSString *)sourceApplication annotation:(id)annotation{

NSString *handleUrl = [url absoluteString];

if ([handleUrl isEqualToString:@"TestBApp://callsuccess"]) {

return YES;

}else{

UINavigationController *vc = (UINavigationController *)_window.rootViewController;

if (vc == nil) {

PathViewController *controller = [[PathViewController alloc] initWithNibName:@"PathViewController" bundle:nil];

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

self.mUINavigationController = [[UINavigationController alloc] init];

[self.mUINavigationController pushViewController:controller animated:YES];

[self.window addSubview:self.mUINavigationController.view];

// Override point for customization after application launch.

self.window.backgroundColor = [UIColor whiteColor];

[self.window makeKeyAndVisible];

}

return YES;

}