一，效果图。
二，代码。
|
1
2
3
4
5
6
7
8
9
10
11
12
|
- (void)viewdidload { [super viewdidload]; // do any additional setup after loading the view, typically from a nib. uialertview* alert = [[uialertview alloc]initwithtitle:nil message:@"此信息３秒后消失" delegate:nil cancelbuttontitle:nil otherbuttontitles:nil, nil]; [alert show]; [self performselector:@selector(dismissalert:) withobject:alert afterdelay:3.0];}- (void)dismissalert:(uialertview*)alert { if ( alert.visible ) { [alert dismisswithclickedbuttonindex:alert.cancelbuttonindex animated:yes]; }} |
下面给大家介绍下uialertview自动消失的两种方法
话说，在写程序的过程中用到很多提示的信息，于是非常自然地就要使用uialertview控件。
但是这些提示的信息有时候只需提示就行，不用操作，那么此时就要这个提示框自动消失就ok了。
uialertview弹出后2s让其自动消失，两种方法：
(1)结合nstimer
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
uialertview basealert = nil;- (void) performdismiss: (nstimer *)timer{ [basealert dismisswithclickedbuttonindex:0 animated:no];//important [basealert release]; basealert = null;} - (void) presentsheet{ basealert = [[uialertview alloc] initwithtitle:@"alert" message:@"\nmessage message message " delegate:self cancelbuttontitle:nil otherbuttontitles: nil]; [nstimer scheduledtimerwithtimeinterval:2.0f target:self selector: @selector(performdismiss:) userinfo:nil repeats:no]; [basealert show];} |
(2)使用performselector：withobject：afterdelay：方法
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
- (void) dimissalert:(uialertview *)alert{ if(alert) { [alert dismisswithclickedbuttonindex:[alert cancelbuttonindex] animated:yes]; [alert release]; }}- (void)showalert{ uialertview *alert = [[uialertview alloc] initwithtitle:@"title" message:@"message" delegate:nil cancelbuttontitle:nil otherbuttontitles:nil]; [alert show]; [self performselector:@selector(dimissalert:) withobject:alert afterdelay:2.0];} |
总结
以上所述是小编给大家介绍的ios中uialertview3秒后消失的两种实现方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
