iOS 自定义提示框

来源：互联网发布：python twisted 编辑：程序博客网时间：2024/05/16 12:21

在项目的开发中经常需要用到一些提示框，提示用户是否确定进行某项操作。虽然系统提供了一个UIAlter的控件供开发人员使用，但是系统自带往往有局限性，不能满足需求了，很多时候需要自定义提示框。我写了一个比较简单的自定义提示框，当然可以根据自己实际的需求，在我写的基础上面进行自定义，去添加一些更加丰富的功能。

1、新建一个类，命名为:PopAlterView，继承于UIView，然后添加如下代码：

#import <UIKit/UIKit.h>@interface PopAlterView : UIView@property (strong, nonatomic) UIView *transparentView;@property (strong, nonatomic) UIView *alterView;@property (strong, nonatomic) UILabel *labTitle;@property (strong, nonatomic) UIButton *btnCancle;@property (strong, nonatomic) UIButton *btnConfirm;/** * 自定义提示框 * *  @param theView 提示框弹出的view *  @param title   提示框的标题 */- (void)showInView:(UIView *)theView withTitle:(NSString *)title;//点击按钮后的回调方法@property (nonatomic,strong) void (^btnAction)(NSInteger tag);@end

#import "PopAlterView.h"@implementation PopAlterView- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        _transparentView = [[UIView alloc] initWithFrame:frame];        _transparentView.backgroundColor= [UIColor colorWithWhite:0 alpha:0.25];        [self addSubview:_transparentView];        _alterView = [[UIView alloc] initWithFrame:CGRectMake((frame.size.width-200)/2, (frame.size.height-100)/2, 200, 100)];        _alterView.backgroundColor = [UIColor whiteColor];        _alterView.layer.cornerRadius = 5.0;        _alterView.layer.masksToBounds = YES;        [_transparentView addSubview:_alterView];        _labTitle = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 180, 50)];        _labTitle.textAlignment = NSTextAlignmentCenter;        _labTitle.numberOfLines = 0;        [_alterView addSubview:_labTitle];        _btnCancle = [[UIButton alloc] initWithFrame:CGRectMake(10, 60, 80, 25)];        [_btnCancle setTitle:@"取消" forState:UIControlStateNormal];        _btnCancle.layer.cornerRadius = 12.0;        _btnCancle.layer.masksToBounds = YES;        _btnCancle.backgroundColor = [UIColor grayColor];        [_btnCancle setTag:100];        [_btnCancle addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];        [_alterView addSubview:_btnCancle];        _btnConfirm = [[UIButton alloc] initWithFrame:CGRectMake (105, 60, 80, 25)];        [_btnConfirm setTitle:@"确定" forState:UIControlStateNormal];        _btnConfirm.layer.cornerRadius = 12.0;        _btnConfirm.layer.masksToBounds = YES;        _btnConfirm.backgroundColor = [UIColor blueColor];        [_btnConfirm addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];        [_btnConfirm setTag:200];        [_alterView addSubview:_btnConfirm];    }    return self;}- (void)showInView:(UIView *)theView withTitle:(NSString *)title{    [theView addSubview:self];    _labTitle.text = title;}-(void)btnClick:(id)sender{    UIButton *btn = (UIButton *)sender;    _btnAction(btn.tag);    [self removeFromSuperview];}@end

自定义提示框的类就写好了，然后就可以调用了。

2、在需要调用的地方，进行调用

- (void)btnClick:(id)sender{    PopAlterView *alterView = [[PopAlterView alloc] initWithFrame:self.view.frame];    [alterView showInView:self.view withTitle:@"测试"];    alterView.btnAction = ^(NSInteger tag){        NSLog(@"%ld",(long)tag);    };}

对于点击提示框上的“取消”和“确定”按钮需要进行的操作，可以在btnAction这个回调方法中进行。

效果图

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