Benutzerdefiniertes iOS-Eingabeaufforderungs-Popup-Fenster, um einen ähnlichen Effekt wie UIAlertView zu erzielen

Werfen wir zunächst einen Blick auf die Renderings der Implementierung

Im Folgenden gibt es nicht viel zu sagen, das Folgende ist der Beispielcode der Implementierung

#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

Rufen Sie

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];

direkt dort an, wo Sie gebraucht werden