自定义的选择器

image.png

#import 

@interface SelectPickerView : UIView


@property (weak, nonatomic) IBOutlet UIView *view;

@property (weak, nonatomic) IBOutlet UILabel *label_title;

/** 外界数据源数组 */
@property (nonatomic,strong)NSArray * pickerSourceAy; // 要展示的地区

typedef void (^PickSuccessBlock)(NSInteger arrIndex);

/** 成功时回调 */
@property (nonatomic,strong)PickSuccessBlock pickSuccessBlock;

+ (instancetype)regionView;

/

#import "SelectPickerView.h"

@interface SelectPickerView ()

@property (weak, nonatomic) IBOutlet UIPickerView *pickerView;


/** 选中的行索引 */
@property (nonatomic,assign)NSInteger selectedIndex;

@end

@implementation SelectPickerView


+ (instancetype)regionView {

     return [[[NSBundle mainBundle] loadNibNamed:NSStringFromClass(self) owner:nil options:nil] firstObject];
 }


- (IBAction)but_Select:(id)sender {

      self.pickSuccessBlock(self.selectedIndex);

      [self removeFromSuperview];
 }


- (IBAction)but_Cancel:(id)sender {

  [self removeFromSuperview];
}


  #pragma Mark -- UIPickerViewDataSource
  // pickerView 列数
  - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
  return 1;
  }

  // pickerView 每列个数
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {

    return [self.pickerSourceAy count];
  }

  #pragma Mark -- UIPickerViewDelegate
  // 每列宽度
  - (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component {

  //    if (component == 1) {
  //        return 40;
  //    }
      return 270;
  }

    // 返回选中的行
 - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
  self.selectedIndex = row;
}

//返回当前行的内容,此处是将数组中数值添加到滚动的那个显示栏上
-(NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    return [self.pickerSourceAy objectAtIndex:row];
}

接下来调用

SelectPickerView * selectPicker = [SelectPickerView regionView];

selectPicker.frame = self.view.bounds;
selectPicker.backgroundColor = [UIColor clearColor];
selectPicker.view.layer.masksToBounds = YES;
selectPicker.view.layer.cornerRadius = 5;
 [self.view addSubview:selectPicker];

NSArray * AyPicker = @[@"1",@"2",.....];
selectPicker.pickerSourceAy = AyPicker;
    selectPicker.pickSuccessBlock = ^(NSInteger Index) {
        
        NSString* str = AyPicker[Index];
 }