[英]mutating method sent to immutable object'
I am trying to add object to the array from a dictionary . 我试图从字典添加对象到数组。 In else part I am getting this error
在其他部分,我得到这个错误
mutating method sent to immutable object'
发送给不可变对象的变异方法”
NSMutableDictionary *selectedDict = [NSMutableDictionary new];
[selectedDict setObject:editedLineItem forKey:@"Text"];
[selectedDict setObject:@"fa-check" forKey:@"IconClass"];
NSMutableArray *tagListDictionary = [NSMutableArray new];
[tagListDictionary addObject:selectedTagsArray];
LineItemsStorage *linestorage = [LineItemsStorage sharedManager];
if(![linestorage.packagesArray valueForKey:@"Id"])
{
[linestorage.selectedLineItemsAndTagsArray addObject:selectedDict];
}
else{ [[linestorage.packagesArray valueForKey:@"LineItems"]addObject:[NSMutableArray arrayWithObject:selectedDict]];
}
-[ NSCFArray insertObject:atIndex:]: mutating method sent to immutable object' *** First throw call stack: ( 0 CoreFoundation 0x00000001154a1d85 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x0000000114f15deb objc_exception_throw + 48 2 CoreFoundation 0x00000001154a1cbd +[NSException raise:format:] + 205 3 CoreFoundation 0x0000000115497b0a -[__NSCFArray insertObject:atIndex:] + 106 4 FlatPebble 0x000000010f276014 -[LineItemViewController okayAction] + 836 5 UIKit 0x0000000113809a8d -[UIApplication sendAction:to:from:forEvent:] + 92 6 UIKit 0x000000011397ce67 -[UIControl sendAction:to:forEvent:] + 67 7 UIKit 0x000000011397d143 -[UIControl _sendActionsForEvents:withEvent:] + 327 8 UIKit 0x000000011397c263 -[UIControl touchesEnded:withEvent:] + 601 9 UIKit 0x000000011387c99f -[UIWindow _sendTouchesForEvent:] + 835 10 UIKit 0x000000011387d6d4 -[UIWindow sendEvent:] + 865 11 UIKit 0x0000000113828dc6 -[UIApplication sendEvent:] + 263 12 UIKit 0x0000000113802553 _UIApplicationHandleEventQueu
-[ NSCFArray insertObject:atIndex:]:发送给不可变对象的变异方法'***首次调用堆栈:(0 CoreFoundation 0x00000001154a1d85 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x0000000114f15deb objc_exception_throw + 48 2 CoreFoundation 0x00000001154NS1ccdd :: + 205 3 CoreFoundation 0x0000000115497b0a-[__ NSCFArray insertObject:atIndex:] + 106 4 FlatPebble 0x000000010f276014-[LineItemViewController okayAction] + 836 5 UIKit 0x0000000113809a8d-[UIApplication sendAction:to:from:forEvent:] + 92 6 UIKit 0x000000011397Control sendAction:to:forEvent:] + 67 7 UIKit 0x000000011397d143-[UIControl _sendActionsForEvents:withEvent:] + 327 8 UIKit 0x000000011397c263-[UIControl touchesEnded:withEvent:] + 601 9 UIKit 0x000000011387c99f-[UIWindow _sendTouches011Eventd] -6 UIKit 0x000000011387c99f -d [UIWindow sendEvent:] + 865 11 UIKit 0x0000000113828dc6-[UIApplication sendEvent:] + 263 12 UIKit 0x0000000113802553 _UIApplicationHandleEventQueu e + 6660 13 CoreFoundation 0x00000001153c7301 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 14 CoreFoundation 0x00000001153bd22c __CFRunLoopDoSources0 + 556 15 CoreFoundation 0x00000001153bc6e3 __CFRunLoopRun + 867 16 CoreFoundation 0x00000001153bc0f8 CFRunLoopRunSpecific + 488 17 GraphicsServices 0x0000000116e5cad2 GSEventRunModal + 161 18 UIKit 0x0000000113807f09 UIApplicationMain + 171 19 *********** 0x000000010f348c2f main + 111 20 libdyld.dylib 0x0000000115d9992d start + 1 )
E + 6660 13的CoreFoundation 0x00000001153c7301 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 14的CoreFoundation 0x00000001153bd22c __CFRunLoopDoSources0 + 556 15的CoreFoundation 0x00000001153bc6e3 __CFRunLoopRun + 867 16的CoreFoundation 0x00000001153bc0f8 CFRunLoopRunSpecific + 488个17 GraphicsServices 0x0000000116e5cad2 GSEventRunModal + 161 18的UIKit 0x0000000113807f09 UIApplicationMain + 171 19 ********** * 0x000000010f348c2f main + 111 20 libdyld.dylib 0x0000000115d9992d start +1)
Use this code 使用此代码
NSMutableDictionary *selectedDict = [[NSMutableDictionary new]mutableCopy];
[selectedDict setObject:editedLineItem forKey:@"Text"];
[selectedDict setObject:@"fa-check" forKey:@"IconClass"];
NSMutableArray *tagListDictionary = [[NSMutableArray new]mutableCopy];
[tagListDictionary addObject:selectedTagsArray];
LineItemsStorage *linestorage = [LineItemsStorage sharedManager];
if(![linestorage.packagesArray valueForKey:@"Id"])
{
[linestorage.selectedLineItemsAndTagsArray addObject:selectedDict];
}
else{ [[linestorage.packagesArray valueForKey:@"LineItems"]addObject:[NSMutableArray arrayWithObject:selectedDict]];
}
Assuming your packagesArray
contains an array containing one or more objects that have a LineItems
property (that happens to also be an array); 假设您的
packagesArray
包含一个数组,该数组包含一个或多个具有LineItems
属性的对象(碰巧也是一个数组); your problem is here: 您的问题在这里:
[[linestorage.packagesArray valueForKey:@"LineItems"]addObject:[NSMutableArray arrayWithObject:selectedDict]]
Breaking it down it is equivalent to: 将其分解等效于:
NSArray* packagesLineItems = [linestorage.packagesArray valueForKey:@"LineItems"];
NSMutableArray* selected = [NSMutableArray arrayWithObject:selectedDict];
[packagesLineItems addObject:selected];
So your problem is either the return type of valueForKey (when called on an array), or the action you're trying to do on it. 因此,您的问题是valueForKey的返回类型(在数组上调用时),或者您要对其执行的操作。
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