ios-自定义alertView提示框

时间:2023-03-08 20:10:58

先上图,弹框的背景色,按钮背景色,提示的消息的字体颜色都可以改变

ios-自定义alertView提示框

  • 利用单例实现丰富的自定义接口

//
// PBAlertController.h
// PBAlertDemo
//
// Created by 裴波波 on 16/4/20.
// Copyright © 2016年 裴波波. All rights reserved.
// #import <UIKit/UIKit.h> typedef void(^PBBlock)(); @interface PBAlertController : UIViewController /** 设置alertView背景色 */
@property (nonatomic, copy) UIColor *alertBackgroundColor;
/** 设置确定按钮背景色 */
@property (nonatomic, copy) UIColor *btnConfirmBackgroundColor;
/** 设置取消按钮背景色 */
@property (nonatomic, copy) UIColor *btnCancelBackgroundColor;
/** 设置message字体颜色 */
@property (nonatomic, copy) UIColor *messageColor; /** 创建单例 */
+(instancetype)shareAlertController;
/** 弹出alertView以及点击确定回调的block */
-(void)alertViewControllerWithMessage:(NSString *)message andBlock:(PBBlock) block; @end
  • .m文件中初始化控件以及对alertView的控件的属性进行懒加载,确定初始的颜色.

//
// PBAlertController.m
// PBAlertDemo
//
// Created by 裴波波 on 16/4/20.
// Copyright © 2016年 裴波波. All rights reserved.
// #import "PBAlertController.h" /** 屏幕尺寸 */
#define kMainScreenBounds [UIScreen mainScreen].bounds @interface PBAlertController () /** 蒙版 */
@property (nonatomic, strong) UIView *coverView;
/** 弹框 */
@property (nonatomic, strong) UIView *alertView;
/** 点击确定回调的block */
@property (nonatomic, copy) PBBlock block; @end @implementation PBAlertController - (void)viewDidLoad { [super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
} -(void)alertViewControllerWithMessage:(NSString *)message andBlock:(PBBlock) block{ self.block = block;
//创建蒙版
UIView * coverView = [[UIView alloc] initWithFrame:kMainScreenBounds];
self.coverView = coverView;
[self.view addSubview:coverView];
coverView.backgroundColor = [UIColor blackColor];
coverView.alpha = 0.7; //创建提示框view
UIView * alertView = [[UIView alloc] init];
alertView.backgroundColor = self.alertBackgroundColor;
//设置圆角半径
alertView.layer.cornerRadius = 6.0;
self.alertView = alertView;
[self.view addSubview:alertView];
alertView.center = coverView.center;
alertView.bounds = CGRectMake(0, 0, kMainScreenBounds.size.width * 0.75, kMainScreenBounds.size.width * 0.75 * 1.5/ 3); //创建操作提示 label
UILabel * label = [[UILabel alloc] init];
[alertView addSubview:label];
label.text = @"操作提示";
label.font = [UIFont systemFontOfSize:19];
label.textAlignment = NSTextAlignmentCenter;
CGFloat lblWidth = alertView.bounds.size.width;
CGFloat lblHigth = 22;
label.frame = CGRectMake(0, 0, lblWidth, lblHigth); //创建中间灰色分割线
UIView * separateLine = [[UIView alloc] init];
separateLine.backgroundColor = [UIColor grayColor];
[alertView addSubview:separateLine];
separateLine.frame = CGRectMake(0, lblHigth + 1, alertView.bounds.size.width, 1); //创建message label
UILabel * lblMessage = [[UILabel alloc] init];
lblMessage.textColor = self.messageColor;
[alertView addSubview:lblMessage];
lblMessage.text = message;
lblMessage.textAlignment = NSTextAlignmentCenter;
lblMessage.numberOfLines = 2; //最多显示两行Message
CGFloat margin = 5;
CGFloat msgX = margin;
CGFloat msgY = lblHigth + 3;
CGFloat msgW = alertView.bounds.size.width - 2 * margin;
CGFloat msgH = 44;
lblMessage.frame = CGRectMake(msgX, msgY, msgW, msgH); //创建确定 取消按钮
CGFloat buttonWidth = (alertView.bounds.size.width - 4 * margin) * 0.5;
CGFloat buttonHigth = 25;
UIButton * btnCancel = [[UIButton alloc] init];
[alertView addSubview:btnCancel];
[btnCancel setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[btnCancel setTitle:@"取消" forState:UIControlStateNormal];
[btnCancel setBackgroundColor:self.btnCancelBackgroundColor];
btnCancel.frame = CGRectMake(margin, alertView.bounds.size.height - margin - buttonHigth, buttonWidth, buttonHigth);
btnCancel.tag = 0;
[btnCancel addTarget:self action:@selector(didClickBtnConfirm:) forControlEvents:UIControlEventTouchUpInside];
//确定按钮
UIButton * btnConfirm = [[UIButton alloc] init];
btnConfirm.tag = 1;
[alertView addSubview:btnConfirm];
[btnConfirm setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[btnConfirm setTitle:@"确定" forState:UIControlStateNormal];
[btnConfirm setBackgroundColor:self.btnConfirmBackgroundColor];
btnConfirm.frame = CGRectMake(alertView.bounds.size.width - margin - buttonWidth, alertView.bounds.size.height - margin - buttonHigth, buttonWidth, buttonHigth);
[btnConfirm addTarget:self action:@selector(didClickBtnConfirm:) forControlEvents:UIControlEventTouchUpInside]; } /** 点击确定 or 取消触发事件 */
-(void)didClickBtnConfirm:(UIButton *)sender{ if (sender.tag == 0) {
[self dismissViewControllerAnimated:YES completion:nil];
return;
}
self.block();
[self dismissViewControllerAnimated:YES completion:nil];
} - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
} static PBAlertController * instance = nil;
+(instancetype)shareAlertController{ static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
instance = [[PBAlertController alloc] init];
});
return instance;
} -(UIColor *)alertBackgroundColor{ if (_alertBackgroundColor == nil) {
_alertBackgroundColor = [UIColor colorWithRed:249/255.0 green:249/255.0 blue:249/255.0 alpha:1];
}
return _alertBackgroundColor;
} /** 确定按钮背景色 */
-(UIColor *)btnConfirmBackgroundColor{ if (_btnConfirmBackgroundColor == nil) {
_btnConfirmBackgroundColor = [UIColor orangeColor];
}
return _btnConfirmBackgroundColor;
} /** 取消按钮背景色 */
-(UIColor *)btnCancelBackgroundColor{ if (_btnCancelBackgroundColor == nil) {
_btnCancelBackgroundColor = [UIColor blueColor];
}
return _btnCancelBackgroundColor;
} /** message字体颜色 */
-(UIColor *)messageColor{ if (_messageColor == nil) {
_messageColor = [UIColor blackColor];
}
return _messageColor;
}
@end
  • 在需要调用的地方进行调用

//
// ViewController.m
// PBAlertDemo
//
// Created by 裴波波 on 16/4/20.
// Copyright © 2016年 裴波波. All rights reserved.
// #import "ViewController.h"
#import "PBAlertController.h"
@interface ViewController () @end @implementation ViewController //点击按钮弹出提示框
- (IBAction)clickShowAlertBtn:(id)sender { PBAlertController * alertVc = [PBAlertController shareAlertController];
alertVc.messageColor = [UIColor redColor];
[alertVc alertViewControllerWithMessage:@"这是一message沙哈" andBlock:^{
NSLog(@"点击确定后执行的方法");
}];
alertVc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:alertVc animated:YES];
} @end