我使用下面的代码来检查MPMediaLibrary授权:检查MPMediaLibrary授权斯威夫特3
func handlePermissions() {
let permissionStatus = MPMediaLibrary.authorizationStatus()
switch (permissionStatus) {
case MPMediaLibraryAuthorizationStatus.authorized:
print("permission status is authorized")
case MPMediaLibraryAuthorizationStatus.notDetermined:
print("permission status is not determined")
MPMediaLibrary.requestAuthorization(MPMediaLibraryAuthorizationStatus -> permissionStatus)
case MPMediaLibraryAuthorizationStatus.denied:
print("permission status is denied")
case MPMediaLibraryAuthorizationStatus.restricted:
print("permission status is restricted")
}
}
最后,我想提示(一经推出)其授权的用户调用查询之前, ...通过案例MPMediaLibraryAuthorizationStatus.notDetermined :.上面的代码产生错误:在' - >'之后的期望类型。当requestAuthorization()行被注释掉时,应用程序在启动时崩溃(访问权限未被授权),并且在启动屏幕消失后显示授权提示视图。
我见过一些如何在Objective C中执行requestAuthorization()但是没有在Swift中的例子。我不明白:
MPMediaLibrary.requestAuthorization(handler: (MPMediaLibraryAuthorizationStatus) -> Void)
请求授权访问Swift 3中MPMediaLibrary的正确方法是什么?