UIAlertView is deprecated in ios9

最新推荐文章于 2020-01-20 21:53:38 发布

Yang_Cabbage

最新推荐文章于 2020-01-20 21:53:38 发布

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分类专栏：编程技术类文章标签： UIAlertView deprecated

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 在ios9中不推荐使用UIAlertView和UIActionSheet。取而代之的是UIAlertController

#import "ViewController.h"

@interface ViewController()
@end

@implementaion ViewController

-(void)viewDidLoad
{
[super viewDidLoad];
//创建一个Button点击显示弹框
UIButton* button = [UIButton buttonWithType:(UIButtonTypeCustom)];
button.frame = CGRectMake(100,100,100,100);
//给button添加点击方法
[button addTarget:sef action:@selector(actionButton:) forControlEvents:(UIControEventTouchUpInside)];
button.backgroudColor = [UIColor blueColor];
[self.view addSubView:button];
}

//button的点击方法
-(void)actionButton:(UIButton*)button
{
//初始化一个UIAlertController
//参数preferredStyle:是IAlertController样式
//UIAlertControllerSytleAlert创建出来相当于UIAlertView
//UIAlertControllerAcionSheet创建出来相当于UIActionSheet
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:@"hello" preferredStyle:(UIAlertControllerStyleAlert)];

//创建按钮
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:(UIAlertActionStyleDefault) handler:^(UIAlertAcion *action){
NSLog(@"注意学习")}];

//创建按钮
//注意取消按钮只能添加一个
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:(UIAlertActionStyleCancel) handler:^(UIAlertAction *action)
{//点击按钮后的方法直接在这里面写
NSLog(@"注意学习");}];

//创建警告按钮
UIAlertAction *structlAction = [UIAlertAction actionWithTitle:@"警告" style:(UIAlertActionStyleDestructive) handler:^(UIAlertAction *action){
NSLog(@"注意学习");
}];

//添加按钮 将按钮添加到UIAlertController对象上
[alertController addAction:okAction];
[alertController addAction:cancelAction];
//[alertController addAction:structAction];

//只有在alert情况下才可以添加文本框
[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField){
textField.placeholder @"用户名";
textField.secureTextEntry = YES;
}];

// //取出文本
// UITextField *text = alertController.textFields.firstObject;
// UIAlertAction *action = alertController.actions.firstObject;

//将UIAlertController模态出来 相当于UIAlertView show的方法
[self presentViewController:alertController animated:YES completion:ni];

<pre name="code" class="objc"><img src="https://img-blog.youkuaiyun.com/20151223100023785?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />