iOS自定义提示弹出框实现类似UIAlertView的效果


            首先来看看实现的效果图





下面话不多说，以下是实现的示例代码





#import <UIKit/UIKit.h>



typedef void(^AlertResult)(NSInteger index);



@interface XLAlertView : UIView



@property (nonatomic,copy) AlertResult resultIndex;



- (instancetype)initWithTitle:(NSString *)title message:(NSString *)message sureBtn:(NSString *)sureTitle cancleBtn:(NSString *)cancleTitle;



- (void)showXLAlertView;



@end







#import "XLAlertView.h"



///alertView 宽

#define AlertW 280

///各个栏目之间的距离

#define XLSpace 10.0



@interface XLAlertView()



//弹窗

@property (nonatomic,retain) UIView *alertView;

//title

@property (nonatomic,retain) UILabel *titleLbl;

//内容

@property (nonatomic,retain) UILabel *msgLbl;

//确认按钮

@property (nonatomic,retain) UIButton *sureBtn;

//取消按钮

@property (nonatomic,retain) UIButton *cancleBtn;

//横线线

@property (nonatomic,retain) UIView *lineView;

//竖线

@property (nonatomic,retain) UIView *verLineView;



@end



@implementation XLAlertView



- (instancetype)initWithTitle:(NSString *)title message:(NSString *)message sureBtn:(NSString *)sureTitle cancleBtn:(NSString *)cancleTitle

{

  if (self == [super init]) {



    self.frame = [UIScreen mainScreen].bounds;



    self.backgroundColor = [UIColor colorWithWhite:0.8 alpha:0.6];



    self.alertView = [[UIView alloc] init];

    self.alertView.backgroundColor = [UIColor whiteColor];

    self.alertView.layer.cornerRadius = 5.0;



    self.alertView.frame = CGRectMake(0, 0, AlertW, 100);

    self.alertView.layer.position = self.center;



    if (title) {



      self.titleLbl = [self GetAdaptiveLable:CGRectMake(2*XLSpace, 2*XLSpace, AlertW-4*XLSpace, 20) AndText:title andIsTitle:YES];

      self.titleLbl.textAlignment = NSTextAlignmentCenter;



      [self.alertView addSubview:self.titleLbl];



      CGFloat titleW = self.titleLbl.bounds.size.width;

      CGFloat titleH = self.titleLbl.bounds.size.height;



      self.titleLbl.frame = CGRectMake((AlertW-titleW)/2, 2*XLSpace, titleW, titleH);



    }

    if (message) {



      self.msgLbl = [self GetAdaptiveLable:CGRectMake(XLSpace, CGRectGetMaxY(self.titleLbl.frame)+XLSpace, AlertW-2*XLSpace, 20) AndText:message andIsTitle:NO];

      self.msgLbl.textAlignment = NSTextAlignmentCenter;



      [self.alertView addSubview:self.msgLbl];



      CGFloat msgW = self.msgLbl.bounds.size.width;

      CGFloat msgH = self.msgLbl.bounds.size.height;



      self.msgLbl.frame = self.titleLbl?CGRectMake((AlertW-msgW)/2, CGRectGetMaxY(self.titleLbl.frame)+XLSpace, msgW, msgH):CGRectMake((AlertW-msgW)/2, 2*XLSpace, msgW, msgH);

    }



    self.lineView = [[UIView alloc] init];

    self.lineView.frame = self.msgLbl?CGRectMake(0, CGRectGetMaxY(self.msgLbl.frame)+2*XLSpace, AlertW, 1):CGRectMake(0, CGRectGetMaxY(self.titleLbl.frame)+2*XLSpace, AlertW, 1);

    self.lineView.backgroundColor = [UIColor colorWithWhite:0.8 alpha:0.6];

    [self.alertView addSubview:self.lineView];



    //两个按钮

    if (cancleTitle && sureTitle) {



      self.cancleBtn = [UIButton buttonWithType:UIButtonTypeSystem];

      self.cancleBtn.frame = CGRectMake(0, CGRectGetMaxY(self.lineView.frame), (AlertW-1)/2, 40);

      [self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];

      [self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];

      [self.cancleBtn setTitle:cancleTitle forState:UIControlStateNormal];

      //[self.cancleBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

      self.cancleBtn.tag = 1;

      [self.cancleBtn addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];



      UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.cancleBtn.bounds byRoundingCorners:UIRectCornerBottomLeft cornerRadii:CGSizeMake(5.0, 5.0)];

      CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

      maskLayer.frame = self.cancleBtn.bounds;

      maskLayer.path = maskPath.CGPath;

      self.cancleBtn.layer.mask = maskLayer;



      [self.alertView addSubview:self.cancleBtn];

    }



    if (cancleTitle && sureTitle) {

      self.verLineView = [[UIView alloc] init];

      self.verLineView.frame = CGRectMake(CGRectGetMaxX(self.cancleBtn.frame), CGRectGetMaxY(self.lineView.frame), 1, 40);

      self.verLineView.backgroundColor = [UIColor colorWithWhite:0.8 alpha:0.6];

      [self.alertView addSubview:self.verLineView];

    }



    if(sureTitle && cancleTitle){



      self.sureBtn = [UIButton buttonWithType:UIButtonTypeSystem];

      self.sureBtn.frame = CGRectMake(CGRectGetMaxX(self.verLineView.frame), CGRectGetMaxY(self.lineView.frame), (AlertW-1)/2+1, 40);

      [self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];

      [self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];

      [self.sureBtn setTitle:sureTitle forState:UIControlStateNormal];

      //[self.sureBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

      self.sureBtn.tag = 2;

      [self.sureBtn addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];



      UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.sureBtn.bounds byRoundingCorners:UIRectCornerBottomRight cornerRadii:CGSizeMake(5.0, 5.0)];

      CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

      maskLayer.frame = self.sureBtn.bounds;

      maskLayer.path = maskPath.CGPath;

      self.sureBtn.layer.mask = maskLayer;



      [self.alertView addSubview:self.sureBtn];



    }



    //只有取消按钮

    if (cancleTitle && !sureTitle) {



      self.cancleBtn = [UIButton buttonWithType:UIButtonTypeSystem];

      self.cancleBtn.frame = CGRectMake(0, CGRectGetMaxY(self.lineView.frame), AlertW, 40);

      [self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];

      [self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];

      [self.cancleBtn setTitle:cancleTitle forState:UIControlStateNormal];

      //[self.cancleBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

      self.cancleBtn.tag = 1;

      [self.cancleBtn addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];



      UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.cancleBtn.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake(5.0, 5.0)];

      CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

      maskLayer.frame = self.cancleBtn.bounds;

      maskLayer.path = maskPath.CGPath;

      self.cancleBtn.layer.mask = maskLayer;



      [self.alertView addSubview:self.cancleBtn];

    }



    //只有确定按钮

    if(sureTitle && !cancleTitle){



      self.sureBtn = [UIButton buttonWithType:UIButtonTypeSystem];

      self.sureBtn.frame = CGRectMake(0, CGRectGetMaxY(self.lineView.frame), AlertW, 40);

      [self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];

      [self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];

      [self.sureBtn setTitle:sureTitle forState:UIControlStateNormal];

      //[self.sureBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

      self.sureBtn.tag = 2;

      [self.sureBtn addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];



      UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.sureBtn.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake(5.0, 5.0)];

      CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];

      maskLayer.frame = self.sureBtn.bounds;

      maskLayer.path = maskPath.CGPath;

      self.sureBtn.layer.mask = maskLayer;



      [self.alertView addSubview:self.sureBtn];



    }



    //计算高度

    CGFloat alertHeight = cancleTitle?CGRectGetMaxY(self.cancleBtn.frame):CGRectGetMaxY(self.sureBtn.frame);

    self.alertView.frame = CGRectMake(0, 0, AlertW, alertHeight);

    self.alertView.layer.position = self.center;



    [self addSubview:self.alertView];

  }



  return self;

}



#pragma mark - 弹出 -

- (void)showXLAlertView

{

  UIWindow *rootWindow = [UIApplication sharedApplication].keyWindow;

  [rootWindow addSubview:self];

  [self creatShowAnimation];

}



- (void)creatShowAnimation

{

  self.alertView.layer.position = self.center;

  self.alertView.transform = CGAffineTransformMakeScale(0.90, 0.90);

  [UIView animateWithDuration:0.25 delay:0 usingSpringWithDamping:0.8 initialSpringVelocity:1 options:UIViewAnimationOptionCurveLinear animations:^{

    self.alertView.transform = CGAffineTransformMakeScale(1.0, 1.0);

  } completion:^(BOOL finished) {

  }];

}



#pragma mark - 回调 -设置只有2 -- > 确定才回调

- (void)buttonEvent:(UIButton *)sender

{

  if (sender.tag == 2) {

    if (self.resultIndex) {

      self.resultIndex(sender.tag);

    }

  }

  [self removeFromSuperview];

}



-(UILabel *)GetAdaptiveLable:(CGRect)rect AndText:(NSString *)contentStr andIsTitle:(BOOL)isTitle

{

  UILabel *contentLbl = [[UILabel alloc] initWithFrame:rect];

  contentLbl.numberOfLines = 0;

  contentLbl.text = contentStr;

  contentLbl.textAlignment = NSTextAlignmentCenter;

  if (isTitle) {

    contentLbl.font = [UIFont boldSystemFontOfSize:16.0];

  }else{

    contentLbl.font = [UIFont systemFontOfSize:14.0];

  }



  NSMutableAttributedString *mAttrStr = [[NSMutableAttributedString alloc] initWithString:contentStr];

  NSMutableParagraphStyle *mParaStyle = [[NSMutableParagraphStyle alloc] init];

  mParaStyle.lineBreakMode = NSLineBreakByCharWrapping;

  [mParaStyle setLineSpacing:3.0];

  [mAttrStr addAttribute:NSParagraphStyleAttributeName value:mParaStyle range:NSMakeRange(0,[contentStr length])];

  [contentLbl setAttributedText:mAttrStr];

  [contentLbl sizeToFit];



  return contentLbl;

}



-(UIImage *)imageWithColor:(UIColor *)color

{

  CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);

  UIGraphicsBeginImageContext(rect.size);

  CGContextRef context = UIGraphicsGetCurrentContext();

  CGContextSetFillColorWithColor(context, [color CGColor]);

  CGContextFillRect(context, rect);

  UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();

  UIGraphicsEndImageContext();

  return theImage;

}



@end



在需要使用的地方直接调用





XLAlertView *xlAlertView = [[XLAlertView alloc] initWithTitle:@"自定义UIAlertView" message:@"不喜勿喷，大神多多指导。不胜感激" sureBtn:@"确认" cancleBtn:@"取消"];

xlAlertView.resultIndex = ^(NSInteger index){

//回调---处理一系列动作

};

[xlAlertView showXLAlertView];



总结

以上就是这篇文章的全部内容了，希望本文的内容对各位iOS开发们能有所帮助，如果有疑问大家可以留言交流，谢谢大家对中文源码网的支持。

            

            

