按下按钮时弹出UIPicker视图

Question

当我按下按钮弹出UIPickerview时，这个代码有问题吗。什么也没发生。为什么是

  -(void)pickerview:(id)sender
{
items =[[NSArray alloc]initWithObjects:@"Hindi",@"English",nil];
pickerView=[[UIPickerView alloc] initWithFrame:CGRectMake(10,100,150,150)];
pickerView.transform = CGAffineTransformMakeScale(0.75f, 0.75f);
pickerView.delegate = self;
pickerView.dataSource = self;
pickerView.showsSelectionIndicator = YES;
pickerView.backgroundColor = [UIColor clearColor];
[pickerView selectRow:1 inComponent:0 animated:YES];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
return [items count];   
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return[items objectAtIndex:row];
}

有人能告诉我这个代码出了什么问题吗。

Answer 1

是的。。大问题。。

[self.view addSubview:pickerview]; 

缺少

你确定你的按钮正在调用这个方法吗。。则返回（void）。。如果连接到xib组件，则应显示IBAction