我想修复 ios 中的 Horizo​​ntal UIPickerView 代码

Question

我找到了水平 UIPickerView 。但这段代码不起作用。

(//this:)是错误区域。

@property (retain, nonatomic)UIPickerView * myPickerView;
@property (retain, nonatomic) NSArray *pickerViewArray;

 #import "ViewController.h"

 @implementation ViewController

@synthesize myPickerView;
@synthesize pickerViewArray;

-(void)loadView{
// Write code to create self.view
// Then...
pickerViewArray = [[NSArray arrayWithObjects:
                    @"John Appleseed", @"Chris Armstrong", @"Serena Auroux",
                    @"Susan Bean", @"Luis Becerra", @"Kate Bell", @"Alain Briere",
                    nil] copy];
myPickerView = [[UIPickerView alloc] initWithFrame:CGRectZero]; //this:thread1 error
myPickerView.delegate = self;
     //this: Passing "ViewController 'const_strong'to parameter of incompatible      
    //type'id<UIPickerViewDelegate>   

                        .
                        .
                        . 
   } 

我想修复错误

Answer 1

尝试：

self.myPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0,0,320, 215)];