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UIAlertController使用：
// 当cell被选中的时候，就会调用
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// 取出数组中对应的model
HeroModel *heroModel = self.dataArray[indexPath.row];
// 弹出提示框
UIAlertView *alertView = [[UIAlertViewalloc]
initWithTitle:@"编辑"
message:nil
delegate:self
cancelButtonTitle:@"取消"
otherButtonTitles:@"确定",nil];
// 显示输入框
/**
UIAlertViewStyleDefault = 0,
UIAlertViewStyleSecureTextInput,
UIAlertViewStylePlainTextInput,
UIAlertViewStyleLoginAndPasswordInput
*/
alertView.alertViewStyle =UIAlertViewStylePlainTextInput;
// 把英雄的名字赋值给 alertView中textField
// 取出aletView的 textField
UITextField *textField = [alertView textFieldAtIndex:0];
textField.text = heroModel.name;
// 点击cell的时候，把row设置给alertView的tag属性
alertView.tag = indexPath.row;
// 展示alertView
[alertView show];
}
#pragma mark -
#pragma mark - alertView的代理方法
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) { // 点击了确定按钮
/**
修改数据显示，修改英雄的名字
*/
// 取出 alertView中的文本输入框
UITextField *textField = [alertView textFieldAtIndex:0];
// 修改过之后的名字
NSString *newName = textField.text;
// 修改数据源中 的英雄名字
// 取出alertView 的tag ,点击的某个行
NSInteger index = alertView.tag;
// 取出点击行所对应的数据源中的模型
HeroModel *model = self.dataArray[index];
// 修改model中的 name属性
model.name = newName;
// 刷新tableView中的数据,对所有数据进行刷新
// [_tableView reloadData];
// // 对某一行cell的数据进行刷新
NSIndexPath *indexPath=[NSIndexPath indexPathForRow:indexinSection:0];
[_tableViewreloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationLeft];
}
}
======================================
// 编辑cell的标题以及UIAlertController的使用
//当cell 被选中的时候， 就会调用
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
// 弹出alertController
UIAlertController *controller = [UIAlertControlleralertControllerWithTitle:@"编辑"message:nilpreferredStyle:UIAlertControllerStyleAlert];
// 添加action-动作(按钮)
UIAlertAction *cancelAction = [UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleCancelhandler:nil];
// 添加到 alerController
[controller addAction:cancelAction];
// 添加确定按钮,点击确定按钮会执行block中的代码
UIAlertAction *sureAction = [UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction *_Nonnull action) {
// 1. 取出新的英雄名字
// 1.1 取出alertController中 textField
UITextField *textField = [controller textFields][0];
NSString *newName = textField.text;
// 2. 修改模型中的数据
HeroModel *heroModel = self.dataArray[indexPath.row];
heroModel.name = newName;
// 3. 刷新数据源
// [_tableView reloadData];
[_tableViewreloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationLeft];
}];
// 取出点击cell对应的模型
HeroModel *heroModel = self.dataArray[indexPath.row];
// 添加输入框
[controller addTextFieldWithConfigurationHandler:^(UITextField *_NonnulltextField) {
// 给textField 设置文本
textField.text = heroModel.name;
}];
// 添加确定按钮到 alertController
[controller addAction:sureAction];
[selfpresentViewController:controller animated:YEScompletion:nil];
}
-=================================
自定义UIAlertController
主要是使用kvc的方式来自定义UIAlertController的样式:
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"标题" message:@"内容" preferredStyle:UIAlertControllerStyleAlert]; // 使用富文本来改变alert的title字体大小和颜色 NSMutableAttributedString *titleText = [[NSMutableAttributedString alloc] initWithString:@"这里是标题"]; [titleText addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:24] range:NSMakeRange(0, 2)]; [titleText addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 2)]; [alert setValue:titleText forKey:@"attributedTitle"]; // 使用富文本来改变alert的message字体大小和颜色 // NSMakeRange(0, 2) 代表:从0位置开始 两个字符 NSMutableAttributedString *messageText = [[NSMutableAttributedString alloc] initWithString:@"这里是正文信息"]; [messageText addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:10] range:NSMakeRange(0, 6)]; [messageText addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 2)]; [messageText addAttribute:NSForegroundColorAttributeName value:[UIColor brownColor] range:NSMakeRange(3, 3)]; [alert setValue:messageText forKey:@"attributedMessage"]; UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]; // 设置按钮背景图片 UIImage *accessoryImage = [[UIImage imageNamed:@"selectRDImag.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]; [cancelAction setValue:accessoryImage forKey:@"image"]; // 设置按钮的title颜色 [cancelAction setValue:[UIColor lightGrayColor] forKey:@"titleTextColor"]; // 设置按钮的title的对齐方式 [cancelAction setValue:[NSNumber numberWithInteger:NSTextAlignmentLeft] forKey:@"titleTextAlignment"]; UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确认" style:UIAlertActionStyleDefault handler:nil]; [alert addAction:okAction]; [alert addAction:cancelAction]; [self presentViewController:alert animated:YES completion:nil];
==============自定义alertcontroler方法一
#import <UIKit/UIKit.h>
@interface SCAlertAction : UIAlertAction
@property (nonatomic,strong)UIColor *textColor;/**< 按钮title字体颜色 */
@end
************************
#import "SCAlertAction.h"
#import <objc/runtime.h>
@implementation SCAlertAction
//按钮标题的字体颜色
-(void)setTextColor:(UIColor *)textColor
{
_textColor = textColor;
unsigned int count =0;
Ivar *ivars = class_copyIvarList([UIAlertAction class], &count);
for(int i =0;i < count;i ++){
Ivar ivar = ivars[i];
NSString *ivarName = [NSStringstringWithCString:ivar_getName(ivar)encoding:NSUTF8StringEncoding];
if ([ivarName isEqualToString:@"_titleTextColor"]) {
[self setValue:textColor forKey:@"titleTextColor"];
}
}
}
@end
***********************************
#import <UIKit/UIKit.h>
@interface SCAlertController : UIAlertController
@property (nonatomic,strong)UIColor *tintColor;/**< 统一按钮样式 不写系统默认的蓝色 */
@property (nonatomic,strong)UIColor *titleColor;/**< 标题的颜色 */
@property (nonatomic,strong)UIColor *messageColor;/**< 信息的颜色 */
@end
***********************//用法就很简单了,和系统原生UIAlertController一样,只是把UI换成SC,当然你可以改成自己喜欢的,但是别忘了改完.
//
//SCAlertController *alertController = [SCAlertController alertControllerWithTitle:@"你确定要退出吗?" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
//alertController.tintColor = [UIColor redColor]; //这里统一设置各个按钮的颜色都为红色.
//当然,你还可以自定义某一个按钮的颜色.比如下面的取消按钮
//alertController.titleColor = [UIColor redColor];
//
取消
//SCAlertAction *cancelAction = [SCAlertAction actionWithTitle:@"我不想退出" style:UIAlertActionStyleCancel handler:nil];
//
单独修改一个按钮的颜色
//cancelAction.textColor = [UIColor greenColor];
//[alertController addAction:cancelAction];
//
退出
//SCAlertAction *exitAction = [SCAlertAction actionWithTitle:@"退出" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
//
//}];
//[alertController addAction:exitAction];
//
//[self presentViewController:alertController animated:YES completion:nil];
//}
//
#import "SCAlertController.h"
#import "SCAlertAction.h"
#import <objc/runtime.h>
@interface SCAlertController ()
@end
@implementation SCAlertController
-(void)viewDidLoad
{
[superviewDidLoad];
unsigned int count =0;
Ivar *ivars = class_copyIvarList([UIAlertController class], &count);
for(int i =0;i < count;i ++){
Ivar ivar = ivars[i];
NSString *ivarName = [NSStringstringWithCString:ivar_getName(ivar)encoding:NSUTF8StringEncoding];
//标题颜色
if ([ivarName isEqualToString:@"_attributedTitle"] &&self.title &&self.titleColor) {
NSMutableAttributedString *attr = [[NSMutableAttributedStringalloc]initWithString:self.titleattributes:@{ NSForegroundColorAttributeName:self.titleColor,NSFontAttributeName:[UIFontboldSystemFontOfSize:14.0]}];
[self setValue:attr forKey:@"attributedTitle"];
}
//描述颜色
if ([ivarName isEqualToString:@"_attributedMessage"] &&self.message &&self.messageColor) {
NSMutableAttributedString *attr = [[NSMutableAttributedStringalloc]initWithString:self.messageattributes:@{ NSForegroundColorAttributeName:self.messageColor,NSFontAttributeName:[UIFontsystemFontOfSize:14.0]}];
[self setValue:attr forKey:@"attributedMessage"];
}
}
//按钮统一颜色
if (self.tintColor) {
for (SCAlertAction *action in self.actions) {
if (!action.textColor) {
action.textColor = self.tintColor;
}
}
}
}
@end
=====================方法2
//1.标题和提示内容的文字设置
//代码如下：
修改title
//NSMutableAttributedString *alertControllerStr = [[NSMutableAttributedString alloc] initWithString:@"提示"];
//[alertControllerStr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 2)];
//[alertControllerStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:17] range:NSMakeRange(0, 2)];
//[alertController setValue:alertControllerStr forKey:@"attributedTitle"];
//
修改message
//NSMutableAttributedString *alertControllerMessageStr = [[NSMutableAttributedString alloc] initWithString:@"提示内容"];
//[alertControllerMessageStr addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(0, 4)];
//[alertControllerMessageStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20] range:NSMakeRange(0, 4)];
//[alertController setValue:alertControllerMessageStr forKey:@"attributedMessage"];
修改取消或确定按钮
//if (cancelAction valueForKey:@"titleTextColor") {
// [cancelAction setValue:[UIColor redColor] forKey:@"titleTextColor"];
//}
//[cancelAction setValue:[UIImage imageNamed:@""] forKey: "image"];//给取消按钮设置图片
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