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iOS自定义alertView提示框实例分享

转载 作者:qq735679552 更新时间:2022-09-28 22:32:09 25 4
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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 。

iOS自定义alertView提示框实例分享

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

.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

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

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.

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