本文實例為大家分享iOS自定義alertView提示框，先上圖,彈框的背景色,按鈕背景色,提示的消息的字體顏色都可以改變
利用單例實現(xiàn)豐富的自定義接口
//// 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/** 設(shè)置alertView背景色 */@property (nonatomic, copy) UIColor *alertBackgroundColor;/** 設(shè)置確定按鈕背景色 */@property (nonatomic, copy) UIColor *btnConfirmBackgroundColor;/** 設(shè)置取消按鈕背景色 */@property (nonatomic, copy) UIColor *btnCancelBackgroundColor;/** 設(shè)置message字體顏色 */@property (nonatomic, copy) UIColor *messageColor;/** 創(chuàng)建單例 */+(instancetype)shareAlertController;/** 彈出alertView以及點擊確定回調(diào)的block */-(void)alertViewControllerWithMessage:(NSString *)message andBlock:(PBBlock) block;@end
.m文件中初始化控件以及對alertView的控件的屬性進行懶加載,確定初始的顏色.
//// 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;/** 彈框 */@property (nonatomic, strong) UIView *alertView;/** 點擊確定回調(diào)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; //創(chuàng)建蒙版 UIView * coverView = [[UIView alloc] initWithFrame:kMainScreenBounds]; self.coverView = coverView; [self.view addSubview:coverView]; coverView.backgroundColor = [UIColor blackColor]; coverView.alpha = 0.7; //創(chuàng)建提示框view UIView * alertView = [[UIView alloc] init]; alertView.backgroundColor = self.alertBackgroundColor; //設(shè)置圓角半徑 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); //創(chuàng)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); //創(chuàng)建中間灰色分割線 UIView * separateLine = [[UIView alloc] init]; separateLine.backgroundColor = [UIColor grayColor]; [alertView addSubview:separateLine]; separateLine.frame = CGRectMake(0, lblHigth + 1, alertView.bounds.size.width, 1); //創(chuàng)建message label UILabel * lblMessage = [[UILabel alloc] init]; lblMessage.textColor = self.messageColor; [alertView addSubview:lblMessage]; lblMessage.text = message; lblMessage.textAlignment = NSTextAlignmentCenter; lblMessage.numberOfLines = 2; //最多顯示兩行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); //創(chuàng)建確定 取消按鈕 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]; //確定按鈕 UIButton * btnConfirm = [[UIButton alloc] init]; btnConfirm.tag = 1; [alertView addSubview:btnConfirm]; [btnConfirm setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [btnConfirm setTitle:@"確定" 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];}/** 點擊確定 or 取消觸發(fā)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;}/** 確定按鈕背景色 */-(UIColor *)btnConfirmBackgroundColor{ if (_btnConfirmBackgroundColor == nil) { _btnConfirmBackgroundColor = [UIColor orangeColor]; } return _btnConfirmBackgroundColor;}/** 取消按鈕背景色 */-(UIColor *)btnCancelBackgroundColor{ if (_btnCancelBackgroundColor == nil) { _btnCancelBackgroundColor = [UIColor blueColor]; } return _btnCancelBackgroundColor;}/** message字體顏色 */-(UIColor *)messageColor{ if (_messageColor == nil) { _messageColor = [UIColor blackColor]; } return _messageColor;}@end在需要調(diào)用的地方進行調(diào)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//點擊按鈕彈出提示框- (IBAction)clickShowAlertBtn:(id)sender { PBAlertController * alertVc = [PBAlertController shareAlertController]; alertVc.messageColor = [UIColor redColor]; [alertVc alertViewControllerWithMessage:@"這是一message沙哈" andBlock:^{ NSLog(@"點擊確定后執(zhí)行的方法"); }]; alertVc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presentModalViewController:alertVc animated:YES];}@end以上就是本文的全部內(nèi)容，希望對大家學(xué)習(xí)iOS程序設(shè)計有所幫助。
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