iOS中可以设定时间自动消失提示框的三种实现方式

//==============================================================================

#pragma mark - 一、显示定制View的消息，定时消失

//==============================================================================

+(void)showMessage:(NSString *)message duration:(NSTimeInterval)time
{
CGSize screenSize = [[UIScreen mainScreen] bounds].size;

UIWindow * window = [UIApplication sharedApplication].keyWindow;
UIView *showview = [[UIView alloc]init];
showview.backgroundColor = [UIColor grayColor];
showview.frame = CGRectMake(1, 1, 1, 1);
showview.alpha = 1.0f;
showview.layer.cornerRadius = 5.0f;
showview.layer.masksToBounds = YES;
[window addSubview:showview];

UILabel *label = [[UILabel alloc]init];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];
paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;

NSDictionary *attributes = @{NSFontAttributeName:[UIFont systemFontOfSize:15.f],
NSParagraphStyleAttributeName:paragraphStyle.copy};

CGSize labelSize = [message boundingRectWithSize:CGSizeMake(207, 999)
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributes context:nil].size;

label.frame = CGRectMake(10, 5, labelSize.width +20, labelSize.height);
label.text = message;
label.textColor = [UIColor whiteColor];
label.textAlignment = 1;
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:15];
[showview addSubview:label];

showview.frame = CGRectMake((screenSize.width - labelSize.width - 20)/2,
screenSize.height - 100,
labelSize.width+40,
labelSize.height+10);
[UIView animateWithDuration:time animations:^{
showview.alpha = 0;
} completion:^(BOOL finished) {
[showview removeFromSuperview];
}];
}

//==============================================================================

#pragma mark - 二、显示UIAlert窗口消息，定时消失

//==============================================================================

//------------------------------------------------------------------------------

#pragma mark - 1、外部调用接口

//------------------------------------------------------------------------------

+(void)showAlert:(NSString *) message duration:(NSTimeInterval)time
{
UIAlertView *promptAlert = [[UIAlertView alloc] initWithTitle:@"提示:"
message:message delegate:nil
cancelButtonTitle:nil
otherButtonTitles:nil];

[NSTimer scheduledTimerWithTimeInterval:time
target:self
selector:@selector(timerFireMethod:)
userInfo:promptAlert
repeats:YES];
[promptAlert show];
}

//------------------------------------------------------------------------------

#pragma mark - 2、外部调用接口的回调方法

//------------------------------------------------------------------------------

+(void)timerFireMethod:(NSTimer*)theTimer//弹出框
{
UIAlertView *promptAlert = (UIAlertView*)[theTimer userInfo];
[promptAlert dismissWithClickedButtonIndex:0 animated:NO];
promptAlert = NULL;
}

//==============================================================================

#pragma mark - 三、显示UIAlert窗口消息，定时消失

//==============================================================================

//------------------------------------------------------------------------------

#pragma mark - 1、外部调用接口

//------------------------------------------------------------------------------

+(void)showAlertMessageWithMessage:(NSString*)message duration:(NSTimeInterval)time
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示:" message:message delegate:nil
cancelButtonTitle:nil otherButtonTitles:nil];
[alert show];
[self performSelector:@selector(dimissAlert:) withObject:alert afterDelay:time];
}

//------------------------------------------------------------------------------

#pragma mark - 2、外部调用接口的回调方法

//------------------------------------------------------------------------------

+(void) dimissAlert:(UIAlertView *)alert {
if(alert) {
[alert dismissWithClickedButtonIndex:[alert cancelButtonIndex] animated:YES];
}
}
//------------------------------------------------------------------------------