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
利用單例實現豐富的自定義接口
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//// 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/** 設置alertview背景色 */@property (nonatomic, copy) uicolor *alertbackgroundcolor;/** 設置確定按鈕背景色 */@property (nonatomic, copy) uicolor *btnconfirmbackgroundcolor;/** 設置取消按鈕背景色 */@property (nonatomic, copy) uicolor *btncancelbackgroundcolor;/** 設置message字體顏色 */@property (nonatomic, copy) uicolor *messagecolor;/** 創建單例 */+(instancetype)sharealertcontroller;/** 彈出alertview以及點擊確定回調的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.
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//// 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; //創建提示框view uiview * alertview = [[uiview alloc] init]; alertview.backgroundcolor = self.alertbackgroundcolor; //設置圓角半徑 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 |
在需要調用的地方進行調用
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//// 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(@"點擊確定后執行的方法"); }]; alertvc.modaltransitionstyle = uimodaltransitionstylecrossdissolve; [self presentmodalviewcontroller:alertvc animated:yes];}@end |
以上就是本文的全部內容，希望對大家學習ios程序設計有所幫助。
