新API的官方描述
// Options are specified in the section below for openURL options. An empty options dictionary will result in the same
// behavior as the older openURL call, aside from the fact that this is asynchronous and calls the completion handler rather
// than returning a result.
// The completion handler is called on the main queue.
- (void)openURL:(NSURL*)url options:(NSDictionary<NSString *, id> *)options completionHandler:(void (^ __nullable)(BOOL success))completion NS_AVAILABLE_IOS(10_0) NS_EXTENSION_UNAVAILABLE_IOS("");
这段话清楚地指明了新API的两个特点:异步执行open操作和主线程执行回调.
#pragma mark -- openURL options --
// Option for openURL:options:CompletionHandler: only open URL if it is a valid universal link with an application configured to open it
// If there is no application configured, or the user disabled using it to open the link, completion handler called with NO
UIKIT_EXTERN NSString *const UIApplicationOpenURLOptionUniversalLinksOnly NS_AVAILABLE_IOS(10_0);
openURL options
新API的代码描述
// early
- (BOOL)openURL:(NSURL*)url NS_DEPRECATED_IOS(2_0, 10_0, "Please use openURL:options:completionHandler: instead") NS_EXTENSION_UNAVAILABLE_IOS("");
- (BOOL)canOpenURL:(NSURL *)url NS_AVAILABLE_IOS(3_0);
// now ios 10
- (void)openURL:(NSURL*)url options:(NSDictionary<NSString *, id> *)options completionHandler:(void (^ __nullable)(BOOL success))completion NS_AVAILABLE_IOS(10_0) NS_EXTENSION_UNAVAILABLE_IOS("");
用法
options目前可传入参数Key在UIApplication头文件只有一个:
UIApplicationOpenURLOptionUniversalLinksOnly,其对应的Value为布尔值,默认为False.
如该Key对应的Value为True,那么打开所传入的Universal Link时,只允许通过这个Link所代表的iOS应用跳转的方式打开这个链接,否则就会返回success为false,也就是说只有安装了Link所对应的App的情况下才能打开这个Universal Link,而不是通过启动Safari方式打开这个Link的代表的网站.
// options字典参数,没有限定值时就要传空字典,就像下方代码一样调用.
[[UIApplication sharedApplication] openURL:URL options:@{} completionHandler:nil];
// 等同于
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"https://www.baidu.com"] options:@{UIApplicationOpenURLOptionUniversalLinksOnly : @NO} completionHandler:nil];
[[UIApplication sharedApplication] openURL:URL options:@{UIApplicationOpenURLOptionUniversalLinksOnly : @YES} completionHandler:nil];
注意
好像ios10不允许app跳隐私界面了
// 都跳不过去
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=PHOTOS"]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=PHOTOS"] options:@{} completionHandler:nil];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy&path=PHOTOS"] options:@{UIApplicationOpenURLOptionUniversalLinksOnly : @YES} completionHandler:nil];
不过这个还可以跳转,这个可以调到app的设置界面
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];