xcode 如何以编程方式将 1-100 个数字添加到选择器视图？
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How can I add 1-100 numbers to picker view programmatically?
提问by venkateswararao burle
I created a UIPickerView manually with three components. I want to display numbers from 1 to 100 in component1. How can I do it programmatically?
我用三个组件手动创建了一个 UIPickerView。我想在 component1 中显示从 1 到 100 的数字。我怎样才能以编程方式做到这一点？
回答by Ilanchezhian
I guess you have implemented the methods
我猜你已经实现了这些方法
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 3;
}
and
和
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
if (component == 1 )
{
return [NSString stringWithFormat:@"%d",(row+1)];
}
return @"";//required elements
}
回答by aahsanali
in .h file
在 .h 文件中
NSMutableArray *data ;
--
——
data = [NSMutableArray alloc] init];
for (int i=1; i<=100; i++){
[data addObject:[NSString stringWithFormat:@"%d",i];
}
// this will add 1-100 values in your array (data) Then Implement UIPickerViewDelegate
// 这将在您的数组（数据）中添加 1-100 个值然后实现 UIPickerViewDelegate
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView {
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component {
return [data count];
}
- (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [data objectAtIndex:row];
}
回答by Narayana
use below code it wil help you
使用下面的代码它会帮助你
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
if(component==1)
return 100;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
if(component==1)
return [NSString stringWithFormat:@"%i",row+1];
}
回答by Jonatan
Here's a quick answer (just passing through). Use an array for storing the values. Use some kind of loop to quickly add the values 1-1000. Use something like this to get the value:
这是一个快速答案（只是通过）。使用数组来存储值。使用某种循环快速添加值 1-1000。使用这样的东西来获取值：
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent: (NSInteger)component{
return [component1Array objectAtIndex: row];
}
