我有一個應用程序,其中當用戶點擊一個按鈕時,我想打開uipickerview作爲子視圖到主視圖,在用戶選擇一個項目後,它應該從主視圖中刪除(下拉類型的功能)。編寫的代碼如下:如何將uipickerview作爲子視圖添加到iphone的mainview?
-(void)showPrefPicker:(id)sender
{
UIView *subView=[[UIView alloc] init];
subView.frame=CGRectMake(180, 120, 150, 150);
pickerView = [[UIPickerView alloc] init];
pickerView.showsSelectionIndicator = YES;
pickerView.dataSource = self;
pickerView.delegate = self;
pickerView.frame=CGRectMake(190, 130, 100, 100);
subView.backgroundColor=[UIColor blackColor];
[subView addSubview:pickerView];
[self.view addSubview:subView];
[pickerView release];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 1;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
NSLog(@"selected object is %@",[arraypref objectAtIndex:row]);
//[pickerView ]
//mlabel.text= [arrayNo objectAtIndex:row];
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
return [arraypref count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
return [arraypref objectAtIndex:row];
}
而是僅示出了在主視圖中不pickerview.how我可以做到這一點對任何教程或源代碼的子視圖?