UIPickerView與JSON對象

-1

NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://advantixcrm.com/prj/mitech/index.php/api/appconfig/Mx"]]; 

[request setHTTPMethod:@"GET"]; 

[request setValue:@"application/json;charset=UTF-8" forHTTPHeaderField:@"content-type"]; 

NSError *err; 
NSURLResponse *response; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err]; 

NSDictionary *jsonArray = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err]; 

NSArray *array=[jsonArray objectForKey:@"RestInfo"]; 

for (int i=0; i<[array count]; i++) { 
    NSString*location=[[array objectAtIndex:i]objectForKey:@"restaurant_location"]; 
    [data addObject:location]; 
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{ 
return 1; 
} 
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent: (NSInteger)component{ 
switch (component) { 
    case 0: 
     return [data count]; 
     break; 

    default: 
     return 0; 
     break; 
} 
return 0; 
} 

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{ 
switch (component) { 
    case 0: 
     return [data objectAtIndex:row]; 
     break; 

    default: 
     return 0; 
     break; 
} 
}

我想把我的JSON對象帶到UIPickerView，但我只是得到「？」。UIPickerView與JSON對象

我該如何將數據帶入UIPickerView？

來源

2014-03-19 user3251949

請詳細說明您的問題。 – Rajesh

問題不清楚。你現在面臨什麼問題？ –

你正在進入數據陣列？ –

這是因爲您沒有重新加載您的UIPickerView，所以只需在獲取數據後重新載入您的選擇器視圖。

data=[NSMutableArray new]; 
for (int i=0; i<[array count]; i++) { 
    NSString*location=[[array objectAtIndex:i]objectForKey:@"restaurant_location"]; 
    [data addObject:location]; 
} 
[yourPickerView reloadComponent:0]; 


//If you want to reload complete pickerView then 
[yourPickerView reloadAllComponents];

來源

2014-03-19 05:01:07 Rajneesh071

UIPickerView與JSON對象

回答

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