开发过程中,我们经常用到弹窗界面,各式各样的弹窗,五花八门,眼花缭乱,个人感觉,还是系统的UI看着让人舒服!
那么实现一个弹窗,你可能首先想到的是UIAlertView,但是这个类苹果在iOS9.0就废弃了:
NS_CLASS_DEPRECATED_IOS(2_0, 9_0, “UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead”)
从他的提示看,系统希望我们使用UIAlertController来代替.当然,我相信每一个iOS开发者都能熟练的写出UIAlertController弹窗.今天我们来说说简单的设置弹窗标题、消息文字color和font，以及按钮color的实现.
- 我们先来创建一个弹窗
/*
UIAlertControllerStyleActionSheet //底部
UIAlertControllerStyleAlert //中间弹窗
*/
UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"通知" message:@"你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!" preferredStyle:UIAlertControllerStyleAlert];//使用弹窗模式
/*
UIAlertActionStyleDefault,默认 显示蓝色
UIAlertActionStyleCancel,取消 显示蓝色
UIAlertActionStyleDestructive,警告 显示红色
*/
//添加事件
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"取消");
}];
UIAlertAction *confirmAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"确定");
}];
//添加action
[alertVC addAction:cancelAction];
[alertVC addAction:confirmAction];
//展示
[self presentViewController:alertVC animated:YES completion:nil];
- 下面我们创建两个分类:UIAlertController的分类UIAlertController+WMAlertSetting.h"和UIAlertAction的分类"UIAlertAction+WMActionSetting.h".然后通过runtime绑定属性来设置.
UIAlertController的分类
- UIAlertController+WMAlertSetting.h声明
#import <UIKit/UIKit.h>
@interface UIAlertController (WMAlertSetting)
//标题颜色
@property (nonatomic ,strong) UIColor *titleColor;
//标题字体
@property (nonatomic ,strong) UIFont *titleFont;
//设置标题的富文本属性
@property (nonatomic ,strong) NSAttributedString *titleAttributedString;
//message颜色
@property (nonatomic ,strong) UIColor *messageColor;
//message字体
@property (nonatomic ,strong) UIFont *messageFont;
//设置message的富文本属性
@property (nonatomic ,strong) NSAttributedString *messageAttributedString;
@end- UIAlertController+WMAlertSetting.m实现
#import "UIAlertController+WMAlertSetting.h"
#import <objc/runtime.h>
@implementation UIAlertController (WMAlertSetting)
//自己来实现 setter 和 getter
@dynamic titleColor;
@dynamic titleFont;
@dynamic messageColor;
@dynamic messageFont;
/**
titleColor 标题颜色的 getter 和 setter
*/
static char *titleColorKey = "titleColorKey";
- (UIColor *)titleColor {
id color = objc_getAssociatedObject(self, titleColorKey);
if (color == nil) {
return [UIColor darkTextColor];
} else {
return color;
}
}
- (void)setTitleColor:(UIColor *)titleColor {
objc_setAssociatedObject(self, titleColorKey, titleColor, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:self.title attributes:@{NSFontAttributeName:self.titleFont,NSForegroundColorAttributeName:titleColor}];
[self setValue:attributedString forKey:@"attributedTitle"];
}
/**
titleFont 标题字体的 getter 和 setter
*/
static char *titleFontKey = "titleFontKey";
- (UIFont *)titleFont {
id font = objc_getAssociatedObject(self, titleFontKey);
if (font == nil) {
return [UIFont systemFontOfSize:15];
} else {
return font;
}
}
- (void)setTitleFont:(UIFont *)titleFont {
objc_setAssociatedObject(self, titleFontKey, titleFont, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:self.title attributes:@{NSFontAttributeName:titleFont,NSForegroundColorAttributeName:self.titleColor}];
[self setValue:attributedString forKey:@"attributedTitle"];
}
/**
messageColor message颜色的 getter 和 setter
*/
static char *messageColorKey = "messageColorKey";
- (UIColor *)messageColor {
id color = objc_getAssociatedObject(self, messageColorKey);
if (color == nil) {
return [UIColor darkGrayColor];
} else {
return color;
}
}
- (void)setMessageColor:(UIColor *)messageColor {
objc_setAssociatedObject(self, messageColorKey, messageColor, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:self.message attributes:@{NSFontAttributeName:self.messageFont,NSForegroundColorAttributeName:messageColor}];
[self setValue:attributedString forKey:@"attributedMessage"];
}
/**
messageColor message字体的 getter 和 setter
*/
static char *messageFontKey = "messageFontKey";
- (UIFont *)messageFont {
id font = objc_getAssociatedObject(self, messageFontKey);
if (font == nil) {
return [UIFont systemFontOfSize:13];
} else {
return font;
}
}
- (void)setMessageFont:(UIFont *)messageFont {
objc_setAssociatedObject(self, messageFontKey, messageFont, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:self.message attributes:@{NSFontAttributeName:messageFont,NSForegroundColorAttributeName:self.messageColor}];
[self setValue:attributedString forKey:@"attributedMessage"];
}
/**
titleAttributedString 为标题赋值的富文本属性 getter 和 setter
*/
static char *titleAttributedStringKey = "titleAttributedStringKey";
- (NSAttributedString *)titleAttributedString {
return [self valueForKey:@"attributedTitle"];
}
- (void)setTitleAttributedString:(NSAttributedString *)titleAttributedString {
objc_setAssociatedObject(self, titleAttributedStringKey, titleAttributedString, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
[self setValue:titleAttributedString forKey:@"attributedTitle"];
}
/**
messageAttributedString 为message赋值的富文本属性 getter 和 setter
*/
static char *messageAttributedStringKey = "messageAttributedStringKey";
- (NSAttributedString *)messageAttributedString {
return [self valueForKey:@"attributedMessage"];
}
- (void)setMessageAttributedString:(NSAttributedString *)messageAttributedString {
objc_setAssociatedObject(self, messageAttributedStringKey, messageAttributedString, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
[self setValue:messageAttributedString forKey:@"attributedMessage"];
}
@endUIAlertAction的分类
- UIAlertAction+WMActionSetting.h声明
#import <UIKit/UIKit.h>
@interface UIAlertAction (WMActionSetting)
//按钮title的颜色
@property (nonatomic ,strong) UIColor *titleColor;
@end- UIAlertAction+WMActionSetting.m实现
#import "UIAlertAction+WMActionSetting.h"
#import <objc/runtime.h>
@implementation UIAlertAction (WMActionSetting)
@dynamic titleColor;
static char *titleColorKey = "titleTextColor";///按钮title颜色
- (UIColor *)titleColor {
id color = objc_getAssociatedObject(self, titleColorKey);
if (color == nil) {
return [UIColor lightGrayColor];
} else {
return color;
}
return objc_getAssociatedObject(self, titleColorKey);
}
- (void)setTitleColor:(UIColor *)titleColor {
objc_setAssociatedObject(self, titleColorKey, titleColor, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
[self setValue:titleColor forKey:@"titleTextColor"];
}
@end使用分类实现弹窗
- 先看效果
/*
UIAlertControllerStyleActionSheet //底部
UIAlertControllerStyleAlert //中间弹窗
*/
UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"通知" message:@"你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!你好吗!" preferredStyle:UIAlertControllerStyleAlert];
alertVC.titleFont = [UIFont systemFontOfSize:16];
alertVC.titleColor = [UIColor redColor];
alertVC.messageFont = [UIFont systemFontOfSize:14];
alertVC.messageColor = [UIColor purpleColor];
/*
UIAlertActionStyleDefault,
UIAlertActionStyleCancel,
UIAlertActionStyleDestructive
*/
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"取消");
}];
cancelAction.titleColor = [UIColor greenColor];
UIAlertAction *confirmAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}];
confirmAction.titleColor = [UIColor orangeColor];
[alertVC addAction:cancelAction];
[alertVC addAction:confirmAction];
[self presentViewController:alertVC animated:YES completion:nil];添加TextField输入框
- UIAlertController类中有一个对象方法:
//此方法只能使用UIAlertControllerStyleAlert样式时使用,否则崩溃
- (void)addTextFieldWithConfigurationHandler:(void (^ __nullable)(UITextField *textField))configurationHandler;
//在此回调中,设置textField的属性及添加监听;
//在UIAlertController添加的action回调中,获取用户输入的文字.
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
