Question

我正在尝试获取会话登录项列表，以查看当前应用程序是否已注册，但出现问题....

以下是代码的快照：

var loginItems : LSSharedFileListRef=LSSharedFileListCreate(nil, kLSSharedFileListSessionLoginItems!.takeUnretainedValue(), nil)!.takeUnretainedValue()

var seed :UInt32 = 0
var theLoginItemsRef=loginItems as LSSharedFileListRef
var loginItemsArray=LSSharedFileListCopySnapshot(theLoginItemsRef, &seed).takeUnretainedValue()

for item in (loginItemsArray as NSArray){
    var itemRef  = item as LSSharedFileListItemRef
    var url=LSSharedFileListItemCopyResolvedURL(itemRef,0,nil).takeUnretainedValue()
    // do something with url
}

它编译，但在运行时它会因为向下转换（var itemRef = item为LSSharedFileListItemRef）并且崩溃而抱怨。（loginItems获取__NSCFType的类型（?? !!？）是否重要？）

它给了我以下错误：

* thread #1: tid = 0x66fb, 0x000000010db218a6 libswiftCore.dylib`swift_dynamicCastUnknownClassUnconditional + 134, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=EXC_I386_BPT, subcode=0x0)
* frame #0: 0x000000010db218a6 libswiftCore.dylib`swift_dynamicCastUnknownClassUnconditional + 134
  frame #1: 0x000000010ddb1bb4 $__lldb_expr65`top_level_code + 2996 at playground65.swift:20
  frame #2: 0x000000010ddb1e61 $__lldb_expr65`main + 49 at <EXPR>:0
...

有什么建议吗？

如何查看会话登录项＃39;在快速？

0 个答案: