1 UIAlertController *alertC = [UIAlertController alertControllerWithTitle:
@"
alertC
" message:
@"
message
" preferredStyle:UIAlertControllerStyleAlert];
2
3
//
preferredStyle--只读
4
//
打印选择的AlertController的类型 actionSheet--0 alertView--1
5
NSLog(
@"
%ld
",alertC.preferredStyle);
6
//
获取alertC的标题和信息
7
NSLog(
@"
%@
",alertC.title);
8 NSLog(
@"
%@
",alertC.message);
9
//
更改标题
10
alertC.title =
@"
title change
";
11
12
//
直接给alertC添加事件执行按钮actionTitle(只能添加一个)
13
/*
14
[alertC addAction:[UIAlertAction actionWithTitle:@"actionTitle" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
15
//点击actionTitle时的回调方法
16
}]];
17
*/
18
19
//
添加多个按钮
20
//
没有任何代理的状况下,在咱们点击alertView界面中的按钮时,就不须要用buttonIndex来区分咱们点击的是哪一个按钮,同时一个界面上多个alertView时,也不须要用tag值来区分你到底点击的是哪个alertView上的按钮了
21
//
这样便于咱们的逻辑思惟,可是代码量并无减小
22
UIAlertAction *action = [UIAlertAction actionWithTitle:NSLocalizedString(
@"
cancle
",
@"
Cancle action
")
23 style:UIAlertActionStyleCancel
24 handler:^(UIAlertAction *action) {
25
//
cancle对应执行的代码
26
NSLog(
@"
cancle action
");
27 }];
28 UIAlertAction *action1 = [UIAlertAction actionWithTitle:NSLocalizedString(
@"
sure
",
@"
Sure action
")
29 style:UIAlertActionStyleDefault
30 handler:^(UIAlertAction *action) {
31
//
sure对应执行的代码
32
NSLog(
@"
sure action
");
33 }];
34
35 [alertC addAction:action];
36 [alertC addAction:action1];
37
38
//
alertView的输入框 sheet类型中没有 可是sheet类型的UIAlertController能够添加textField 当用户要显示sheet时程序会崩
39
[alertC addTextFieldWithConfigurationHandler:^(UITextField *textField) {
40 textField.placeholder =
@"
textFiled
";
41 }];
42
43
//
在这里无论是alertView仍是actionSheet都是一个独立的Cotroller,因此这里须要经过presentViewController来展示咱们的alertView或者actionSheet
44
[self presentViewController:alertC animated:YES completion:nil];
1 UIAlertController *alertC = [UIAlertController alertControllerWithTitle:
@"
alertC
" message:
@"
message
" preferredStyle:UIAlertControllerStyleActionSheet];
2
3 UIAlertAction *action = [UIAlertAction actionWithTitle:NSLocalizedString(
@"
cancle
",
@"
Cancle action
")
4 style:UIAlertActionStyleCancel
5 handler:^(UIAlertAction *action) {
6 NSLog(
@"
cancle action
");
7 }];
8 UIAlertAction *action1 = [UIAlertAction actionWithTitle:NSLocalizedString(
@"
sure
",
@"
Sure action
")
9 style:UIAlertActionStyleDefault
10 handler:^(UIAlertAction *action) {
11 NSLog(
@"
sure action
");
12 }];
13
14 [alertC addAction:action];
15 [alertC addAction:action1];
16 [self presentViewController:alertC animated:YES completion:nil];