[英]Parse Json for UITableView iOS
这是Web服务的Json回复,我很难解析它。 我想要做的是在表格视图中加载下面的数据,例如。 3.7作为节标题和行中的其他值。 我该怎么做?? 我想使用内置的API的无第三方框架。
任何帮助是极大的赞赏。
{"Links":{"3.7":[{"fld_app_download_id":"7111","fld_app_version_id":"1928","fld_date_added":"2012-10-04 08:40:38","fld_cracker":"vend3tta101","fld_download_link":"fiberupload.com","fld_url":"http:\/\/fiberupload.com\/pwzmodjshwhr\/1Password_Pro_(v3.7_v370009_Univ_os31)-vend3tta101.ipa","fld_status":"1"},{"fld_app_download_id":"7112","fld_app_version_id":"1928","fld_date_added":"2012-10-04 08:40:38","fld_cracker":"vend3tta101","fld_download_link":"depositfiles.com","fld_url":"http:\/\/depositfiles.com\/files\/eyhcw06b6","fld_status":"1"},{"fld_app_download_id":"7113","fld_app_version_id":"1928","fld_date_added":"2012-10-04 08:40:38","fld_cracker":"vend3tta101","fld_download_link":"turbobit.net","fld_url":"http:\/\/turbobit.net\/vyc5jkr5s51k.html","fld_status":"1"}]}}
您是否看过NSJSONSerialization
类? 它处理JSON和属性列表之间的转换。
以一种简单的方式,看一下下面的代码:
#import "YourViewController.h"
@interface NSDictionary(JSONCategories)
+(NSDictionary*)dictionaryWithContentsOfJSONURLString:(NSString*)urlAddress;
-(NSData*)toJSON;
@end
@implementation NSDictionary(JSONCategories)
+(NSDictionary*)dictionaryWithContentsOfJSONURLString:(NSString*)urlAddress{
NSData* data = [NSData dataWithContentsOfURL: [NSURL URLWithString: urlAddress] ];
__autoreleasing NSError* error = nil;
id result = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
if (error != nil) return nil;
return result;
}
-(NSData*)toJSON{
NSError* error = nil;
id result = [NSJSONSerialization dataWithJSONObject:self options:kNilOptions error:&error];
if (error != nil) return nil;
return result;
}
@end
@implementation YourViewController
-(IBAction)downloadData:(id)sender{
NSString *yourResponseLink = @"YOUR RESPONSE LINK";
NSURL *urlString = [NSURL URLWithString:urlWroteString];
NSData* data = [NSData dataWithContentsOfURL:urlString];
[self performSelectorOnMainThread:@selector(fetchedData:) withObject:data waitUntilDone:NO];
}
-(void)fetchedData:(NSData *)responseData {
NSError* error;
if (responseData == nil) {
NSLog(@"NO DATA HAS BEEN FETCHED,ERROR = %@",error);
}else{
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error];
NSArray *yourResponseArray = [json objectForKey:@"YOUR RESPONSE KEY"];
NSLog("YOU RESPONSE IS = %@",yourResponseArray);
}
}
@end
要显示响应中的数据,请注意您的数据正在存储在NSArray上,因此在cellForRowAtIndexPath中 ,请使用以下方法:
-(UITableViewCell *)tableView:(UITableView *)myTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
//initialize your cells normally and to display the data from your response use
NSDictionary *yourSpecificData = [yourResponseArray objectAtIndex:[indexPath row]];
//and finally display some text in the cell
cell.textLabel.text = [yourSpecificData objectForKey:@"SOME KEY FROM RESPONSE"];
}
您可以在ios5中使用“ NSJsonSerialization”; 查看代码
-(void) parseJsonData:(NSData *)data
{
NSError *error;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
if (json == nil) {
NSLog(@"json parse failed \r\n");
return;
}
NSArray *songArray = [json objectForKey:@"song"];
NSLog(@"song collection: %@\r\n",songArray);
_song = songArray;
self.songIndex = 0;
NSDictionary *song = [songArray objectAtIndex:0];
NSLog(@"song info: %@\t\n",song);
}
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