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iOS自定义alertView提示框实例分享

来源: 网络整理  作者: 佚名

本文实例为大家分享iOS自定义alertView提示框,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

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
以上就是本文的全部内容,希望对大家学习iOS程序设计有所帮助。

Tags:实例
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