Ios 来自NSDictionary的UIPickerView数据
我从web服务获得的数据如下:Ios 来自NSDictionary的UIPickerView数据,ios,objective-c,xcode,nsdictionary,uipickerview,Ios,Objective C,Xcode,Nsdictionary,Uipickerview,我从web服务获得的数据如下: { "idlife_stage_question" = 43;//..basically this should be key "life_stage_idlife_stage" = 1; "profile_idprofile" = 0; "question_text" = "example";//..this should be object
{
"idlife_stage_question" = 43;//..basically this should be key
"life_stage_idlife_stage" = 1;
"profile_idprofile" = 0;
"question_text" = "example";//..this should be object
sequence = 42;
}
现在,我需要从每个JSON字典中找到“idlife\u stage\u question”和“question\u text”,并在UIPickerView中加载“question\u text”,然后在UILabel中显示所选的行文本。此外,我需要为相应的“问题文本”获取“idlife\u stage\u question”,以便稍后将“idlife\u stage\u question”发送到服务器。我怎样才能用词典做到这一点
编辑:
我的要求是:
将json解析为nsdictionary
-(void) requestFinished : (ASIHTTPRequest *) request {
NSArray *myArray = [NSJSONSerialization
JSONObjectWithData:[request responseData]
options:kNilOptions
error:&error];
}
要检查阵列层次结构,请执行以下操作:
NSLog(@"%@", myArray);
现在,可以将数组的每个元素提取到NSDictionary中。迭代数组时,得到的每个对象都是NSDictionary
迭代数组的步骤
NSEnumerator *myIterator = [myArray objectEnumerator];
id anObject;
while( anObject = [myIterator nextObject]){
NSLog(@"%@", [anObject objectForKey@"question_text"]);
// get each value of your question_text in a new NSArray and use that array for UIPickerView demostrated in the following link
}
然后查看如何以编程方式创建UIPickerView假设您有
self.questionsArray
,其中包含来自webservice的所有数据,并且UIPickerView中只有一个组件
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [self.questionsArray count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return self.questionsArray[row][@"question_text"];
}
取消pickerView的方法
- (void)dismissPickerView
{
//Get the selected Row in picker
NSInteger selectedQuestionIndex = [self.pickerView selectedRowInComponent:0];
NSDictionary *question = self.questionsArray[selectedQuestionIndex];
self.label.text = question[@"question_text"];
//Use this value to send back to server
NSInteger questionId = [question[@"idlife_stage_question"] integerValue];
}
考虑在部分问题上打破你的问题,对你和其他人都有帮助。你的意思是你有多个JSON块,就像你给的一样?它们是一个数组吗?是的..多个..这只是一个示例您如何获得JSON?使用AsiHttpRequest