[英]IOS: how to get Dictionary value which is inside an array
我在一個項目中工作,在該項目中,我有一個包含以給定格式的字典的數組,我必須在“ size_key”的基礎上獲取“ Size_val”的值。
array : (
{
"as_per_size" = {
lowercatname = abcd;
sizes = (
{
"size_key" = "UP_CHEST";
"size_name" = "UP_CHEST";
"size_val" = 4;
typecat = 1;
},
{
"size_key" = LENGTH;
"size_name" = LENGTH;
"size_val" = 1;
typecat = 1;
},
{
"size_key" = DP;
"size_name" = DP;
"size_val" = 3;
typecat = 1;
},
{
"size_key" = "YOKE_LENGTH";
"size_name" = "YOKE_LENGTH";
"size_val" = 2;
typecat = 1;
},
{
"size_key" = KNEE;
"size_name" = KNEE;
"size_val" = 2;
typecat = 2;
},
{
"size_key" = THIGH;
"size_name" = THIGH;
"size_val" = 1;
typecat = 2;
},
{
"size_key" = CALF;
"size_name" = CALF;
"size_val" = 3;
typecat = 2;
}
);
uppercatname = CHOLI;
};
我只想基於“ size_key”獲取“ Size_val”的值。 我使用代碼來獲取uppercatname的值。
upstring1 = [[[arrFilteredOrder objectAtIndex:0] objectForKey:@"as_per_size"] objectForKey:@"uppercatname"];
TypeLabel.text = upstring1;
請給我一些解決方案如何獲得這個價值
請嘗試我下面的編碼
NSDictionary *dict = (NSDictionary *)[[[arrFilteredOrder objectAtIndex:0] objectForKey:@"as_per_size"] objectForKey:@"sizes"];
NSArray *arr = [[[[array objectAtIndex:0]objectForKey:@"as_per_size"]objectForKey:@"sizes"]copy];
for(int i=0;i<[arr count];i++)
{
NSString *strSizekey = [NSString stringWithFormat:@"%@",[[arr objectAtIndex:i]objectForKey:@"size_key"]];
NSString *strSizeValue = [NSString stringWithFormat:@"%@",[[arr objectAtIndex:i]objectForKey:@"size_val"]];
}
顯然,您的size值也是一個數組,因此您必須先獲取此數組,然后循環通過sizes數組以獲取size字典,然后從size字典中獲取具有您的size_key的正確size_val。
因此,對於第一個條目和您的尺寸鍵 :
NSArray* sizes = [[[arrFilteredOrder[0] objectForKey:@"as_per_size"] objectForKey;@"sizes];
foreach(NSDictionary* sizeDict in sizes {
NSString* sizeKey = sizeDict[@"size_key];
if([sizeKey isEqualToString:<your size key>])
{
NSString* sizeVal = sizeDict[@"size_val"];
// now do something with your value
...
}
}
您可以這樣獲得:
NSString *sizeValue = nil;
NSArray *sizes = [arrFilteredOrder.firstObject valueForKeyPath:@"as_per_size.sizes"];
for (NSDictionary *size in sizes) {
if ([size[@"size_key"] isEqualToString:sizeKey]) {
sizeValue = [size[@"size_val"] description]; //converting to string
}
}
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