这是我的 JSON:
{
"Frames":
[
{"Image":"1.png", "Time":"0.04"},
{"Image":"2.png", "Time":"0.04"},
{"Image":"3.png", "Time":"0.04"},
{"Image":"4.png", "Time":"0.04"},
{"Image":"5.png", "Time":"0.04"},
{"Image":"6.png", "Time":"0.04"},
{"Image":"7.png", "Time":"0.04"},
{"Image":"8.png", "Time":"0.04"},
{"Image":"9.png", "Time":"0.04"},
{"Image":"10.png", "Time":"0.04"},
{"Image":"11.png", "Time":"0.04"},
{"Image":"12.png", "Time":"0.04"},
{"Image":"13.png", "Time":"0.04"},
{"Image":"14.png", "Time":"0.04"},
{"Image":"15.png", "Time":"0.04"},
{"Image":"16.png", "Time":"0.04"},
{"Image":"17.png", "Time":"0.04"},
{"Image":"18.png", "Time":"0.04"},
{"Image":"19.png", "Time":"0.04"},
{"Image":"20.png", "Time":"0.04"}
]
}
我想保存Image
的每个值(这里一共20个)键入一个 NSMutableArray
姓名imageNamesArray
和 Time
的每个值键入另一个 NSMutableArray
姓名durationArray
.
我尝试使用 [dictionary valueForKeyPath:@"Frames.Image"]
如下所示:
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"animation" ofType:@"json"];
NSData *content = [[NSData alloc] initWithContentsOfFile:filePath];
NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];
dictionary = [NSJSONSerialization JSONObjectWithData:content options:kNilOptions error:nil];
NSMutableDictionary *detailsDictionary = [[NSMutableDictionary alloc] init];
self.imageNamesArray = [[NSMutableArray alloc] init];
self.durationArray = [[NSMutableArray alloc] init];
[self.imageNamesArray addObject:[dictionary valueForKeyPath:@"Frames.Image"]];
[self.durationArray addObject:[dictionary valueForKeyPath:@"Frames.Time"]];
NSLog(@"imageNamesArray %@", [imageNamesArray objectAtIndex:0]);
NSLog(@"durationArray %@", durationArray);
但是,它保存了所有的Image
imageNamesArray
第一行的键值(我的意思是 [imageNamesArray objectAtIndex:0]
)。 durationArray
也一样.我该怎么办?
非常感谢。
输出将是
imageNamesArray = 1.png, 2.png...........20.PNG
durationArray = 0.04, 0.04...............0.04
最佳答案
您应该使用第一个帧对象作为数组并在其中循环。
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"animation" ofType:@"json"];
NSData *content = [[NSData alloc] initWithContentsOfFile:filePath];
NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];
dictionary = [NSJSONSerialization JSONObjectWithData:content options:kNilOptions error:nil];
//this is your loop array
NSArrray *objArray=[dictionary objectForKey:@"Frames"];
NSMutableDictionary *detailsDictionary = [[NSMutableDictionary alloc] init];
self.imageNamesArray = [[NSMutableArray alloc] init];
self.durationArray = [[NSMutableArray alloc] init];
for (NSDictionary *dic in objArray) {
[self.imageNamesArray addObject:dic[@"Image"]];
[self.durationArray addObject:dic[@"Time"]];
}
NSLog(@"imageNamesArray %@", [imageNamesArray objectAtIndex:0]);
NSLog(@"durationArray %@", durationArray);
关于ios - 获取 JSON 中所有对象的特定键值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29004132/