访问数组中的NSDictionary

我有一些问题从数组访问所需的数据(这是从JSONstring)

来自JSON数组的数据存储在PatternImagesArray中

我在一个集合视图中显示图像,并希望统计一个节内的项目数量。

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { //return [self.patternImagesArray count]; NSDictionary *itemsInSection = [self.patternImagesArray objectAtIndex:section]; NSInteger *ItemCount = [itemsInSection count]; return ItemCount; } 

这里是JSONstring

 [{"RequestTitle":[{"ID":"16","path":"upload\/images\/14439822460482106558105.jpg","thumb_path":""},{"ID":"50","path":"upload\/images\/1445170810100.jpg","thumb_path":"upload\/images\/thumb_1445170810100.jpg"},{"ID":"51","path":"upload\/images\/1445172097564.jpg","thumb_path":"upload\/images\/thumb_1445172097564.jpg"},{"ID":"60","path":"upload\/images\/1445184745267.jpg","thumb_path":"upload\/images\/thumb_1445184745267.jpg"},{"ID":"61","path":"upload\/images\/1445184815796.jpg","thumb_path":"upload\/images\/thumb_1445184815796.jpg"},{"ID":"62","path":"upload\/images\/1445184872026.jpg","thumb_path":"upload\/images\/thumb_1445184872026.jpg"},{"ID":"64","path":"upload\/images\/1445192930295.jpg","thumb_path":"upload\/images\/thumb_1445192930295.jpg"},{"ID":"65","path":"upload\/images\/1445260759823.jpg","thumb_path":"upload\/images\/thumb_1445260759823.jpg"},{"ID":"66","path":"upload\/images\/1446759963249.jpg","thumb_path":"upload\/images\/thumb_1446759963249.jpg"},{"ID":"67","path":"upload\/images\/1446760122026.jpg","thumb_path":"upload\/images\/thumb_1446760122026.jpg"},{"ID":"69","path":"upload\/images\/","thumb_path":"upload\/images\/thumb_"},{"ID":"70","path":"upload\/images\/1446760923270.jpg","thumb_path":"upload\/images\/thumb_1446760923270.jpg"},{"ID":"78","path":"upload\/images\/1447504226902.jpg","thumb_path":"upload\/images\/thumb_1447504226902.jpg"},{"ID":"82","path":"upload\/images\/1447934170005.jpg","thumb_path":"upload\/images\/thumb_1447934170005.jpg"}]},{"RequestTitle":[{"ID":"19","path":"upload\/images\/1430571954572.jpg","thumb_path":""},{"ID":"52","path":"upload\/images\/1445173074393.jpg","thumb_path":"upload\/images\/thumb_1445173074393.jpg"},{"ID":"53","path":"upload\/images\/1445173124081.jpg","thumb_path":"upload\/images\/thumb_1445173124081.jpg"},{"ID":"77","path":"upload\/images\/1446818706307.jpg","thumb_path":"upload\/images\/thumb_1446818706307.jpg"},{"ID":"80","path":"upload\/images\/1447504506629.jpg","thumb_path":"upload\/images\/thumb_1447504506629.jpg"}]},{"RequestTitle":[{"ID":"21","path":"upload\/images\/security.jpeg","thumb_path":""},{"ID":"54","path":"upload\/images\/","thumb_path":"upload\/images\/thumb_"},{"ID":"55","path":"upload\/images\/1445173189403.jpg","thumb_path":"upload\/images\/thumb_1445173189403.jpg"},{"ID":"63","path":"upload\/images\/1445184942890.jpg","thumb_path":"upload\/images\/thumb_1445184942890.jpg"},{"ID":"68","path":"upload\/images\/1446760628765.jpg","thumb_path":"upload\/images\/thumb_1446760628765.jpg"}]},{"RequestTitle":[{"ID":"20","path":"upload\/images\/1443975202043-1048396424.jpg","thumb_path":""},{"ID":"56","path":"upload\/images\/","thumb_path":"upload\/images\/thumb_"},{"ID":"57","path":"upload\/images\/1445173301456.jpg","thumb_path":"upload\/images\/thumb_1445173301456.jpg"},{"ID":"58","path":"upload\/images\/","thumb_path":"upload\/images\/thumb_"},{"ID":"59","path":"upload\/images\/1445177540605.jpg","thumb_path":"upload\/images\/thumb_1445177540605.jpg"},{"ID":"79","path":"upload\/images\/1447504348072.jpg","thumb_path":"upload\/images\/thumb_1447504348072.jpg"}]}] 

variablespatternImageArray我像这样构造

 _patternImagesArray __NSCFArray * @"4 objects" 0x00000001546e48e0 [0] __NSCFDictionary * 1 key/value pair 0x00000001546e3510 [0] struct __lldb_autogen_nspair key __NSCFString * @"RequestTitle" 0x0000000154612fa0 value __NSCFArray * @"14 objects" 0x00000001546e3470 [0] __NSCFDictionary * 3 key/value pairs 0x000000015466c2a0 [1] __NSCFDictionary * 3 key/value pairs 0x00000001546e1f70 [2] __NSCFDictionary * 3 key/value pairs 0x00000001546e28b0 [3] __NSCFDictionary * 3 key/value pairs 0x00000001546c1230 [4] __NSCFDictionary * 3 key/value pairs 0x00000001546e2960 [5] __NSCFDictionary * 3 key/value pairs 0x00000001546e2a30 [6] __NSCFDictionary * 3 key/value pairs 0x00000001546e3040 [7] __NSCFDictionary * 3 key/value pairs 0x00000001546e16f0 [8] __NSCFDictionary * 3 key/value pairs 0x00000001546e1830 [9] __NSCFDictionary * 3 key/value pairs 0x00000001546e1970 [10] __NSCFDictionary * 3 key/value pairs 0x00000001546e1a70 [11] __NSCFDictionary * 3 key/value pairs 0x00000001546e3190 [12] __NSCFDictionary * 3 key/value pairs 0x00000001546e32b0 [13] __NSCFDictionary * 3 key/value pairs 0x00000001546e33f0 [1] __NSCFDictionary * 1 key/value pair 0x00000001546e3bf0 [2] __NSCFDictionary * 1 key/value pair 0x00000001546e41e0 [3] __NSCFDictionary * 1 key/value pair 0x00000001546e4860 

我需要访问14个项目的节点

提前致谢

有人发表评论被删除,不知道为什么,因为这是正确的答案

用于计数数组/ nsdicitonary的已更正的代码是

 -(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { //return [self.patternImagesArray count]; NSDictionary *itemsInSection = [self.patternImagesArray objectAtIndex:section]; NSInteger *ItemCount = [[itemsInSection allValues][0] count]; return ItemCount; } 

希望这可以帮助别人