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
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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
/** 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
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.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.
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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;
/** 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
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在需要调用的地方进行调用
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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
//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
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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。