为文本字段创建多个UIPickerViews,而不将其放在IOS的附件视图中
如何在IOS中创建多个UIPickerView,而不使用UIExtFields input accessoryView作为UIPickerView 获取3个文本字段,并分别将其标记为1,2,3。并设置其委托。 请在.h文件中执行以下操作为文本字段创建多个UIPickerViews,而不将其放在IOS的附件视图中,ios,uipickerview,Ios,Uipickerview,如何在IOS中创建多个UIPickerView,而不使用UIExtFields input accessoryView作为UIPickerView 获取3个文本字段,并分别将其标记为1,2,3。并设置其委托。 请在.h文件中执行以下操作 UIPickerView *packerView1; UIPickerView *packerView2; UIPickerView *packerView3; NSMutableArray *dataArray1; NSMuta
UIPickerView *packerView1;
UIPickerView *packerView2;
UIPickerView *packerView3;
NSMutableArray *dataArray1;
NSMutableArray *dataArray2;
NSMutableArray *dataArray3;
在.m文件中执行以下操作
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
[packerView1 removeFromSuperview];
[packerView2 removeFromSuperview];
[packerView3 removeFromSuperview];
if(textField.tag==1)
{
packerView1=[[UIPickerView alloc] initWithFrame:CGRectMake(0, 280, 320, 200)];
packerView1.delegate=self;
packerView1.dataSource=self;
packerView1.tag=1;
[self.view addSubview:packerView1];
}
else if(textField.tag==2)
{
packerView2=[[UIPickerView alloc] initWithFrame:CGRectMake(0, 280, 320, 200)];
packerView2.delegate=self;
packerView2.dataSource=self;
packerView2.tag=2;
[self.view addSubview:packerView2];
}
else
{
packerView3=[[UIPickerView alloc] initWithFrame:CGRectMake(0, 280, 320, 200)];
packerView3.delegate=self;
packerView3.dataSource=self;
packerView3.tag=3;
[self.view addSubview:packerView3];
}
return YES;
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
// returns the # of rows in each component..
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if(pickerView.tag==1)
{
return [dataArray1 count];
}
else if(pickerView.tag==2)
{
return [dataArray2 count];
}
else
{
return [dataArray3 count];
}
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
if(pickerView.tag==1)
{
return [dataArray1 objectAtIndex:row];
}
else if(pickerView.tag==2)
{
return [dataArray2 objectAtIndex:row];
}
else
{
return [dataArray3 objectAtIndex:row];
}
}
希望这将帮助您最好的方法是在XIB文件中创建单独的UIPicker,每个UIPicker一个,关键是将其放在UIView中,并将该文件的输入附件视图设置为该视图
3个字段需要三个选择器及其各自的UIView容器 太好了!我已经想出来了,但这不是个好办法。