我有自己的json文件“list.json”,用于下面的示例信息列表.我的json文件是
位于 Xcode内部,我想向表中显示我的信息,请你给我一些提示和帮助,我怎样才能解析本地json并在表中加载信息.
位于 Xcode内部,我想向表中显示我的信息,请你给我一些提示和帮助,我怎样才能解析本地json并在表中加载信息.
[
{
"number": "1","name": "jon"
},{
"number": "2","name": "Anton"
},{
"number": "9","name": "Lili"
},{
"number": "7","name": "Kyle"
},{
"display_number": "8","name": "Linda"
}
]
解决方法
您可以创建一个继承自UITableViewController的自定义类.
NSString * filePath =[[NSBundle mainBundle] pathForResource:@"list" ofType:@"json"];
NSError * error;
NSString* fileContents =[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error];
if(error)
{
NSLog(@"Error reading file: %@",error.localizedDescription);
}
self.dataList = (NSArray *)[NSJSONSerialization
JSONObjectWithData:[fileContents dataUsingEncoding:NSUTF8StringEncoding]
options:0 error:NULL];
头文件是：
#import <UIKit/UIKit.h> @interface TVNA_ReadingDataTVCViewController : UITableViewController @end
实施是：
#import "TVNA_ReadingDataTVCViewController.h"
@interface TVNA_ReadingDataTVCViewController ()
@property NSArray* dataList;
@end
@implementation TVNA_ReadingDataTVCViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[self readDataFromFile];
[self.tableView reloadData];
}
-(void)readDataFromFile
{
NSString * filePath =[[NSBundle mainBundle] pathForResource:@"list" ofType:@"json"];
NSError * error;
NSString* fileContents =[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error];
if(error)
{
NSLog(@"Error reading file: %@",error.localizedDescription);
}
self.dataList = (NSArray *)[NSJSONSerialization
JSONObjectWithData:[fileContents dataUsingEncoding:NSUTF8StringEncoding]
options:0 error:NULL];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return self.dataList.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
id keyValuePair =self.dataList[indexPath.row];
cell.textLabel.text = keyValuePair[@"name"];
cell.detailTextLabel.text=[NSString stringWithFormat:@"ID: %@",keyValuePair[@"number"]];
return cell;
}
@end
最后,在您的故事板上,将此类指定为Table View Controller的自定义类.希望这可以帮助.
