首先我们需要写一个私有方法,封装一下,以便于后面调用
我们需要在.h文件中写一个这样的方法
-(void)showAlertMsg:(NSString *)message Duration:(float)duration;
然后在.m文件中调用
-(void)showAlertMsg:(NSString *)message Duration:(float)duration
{
UIWindow * window = [UIApplication sharedApplication].keyWindow;
UIView *showview = [[UIView alloc]init];
showview.backgroundColor = [UIColor blackColor];
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];
CGSize LabelSize = [message sizeWithFont:[UIFont systemFontOfSize:17] constrainedToSize:CGSizeMake(SCREEN_WIDTH-50, 9000)];
label.frame = CGRectMake(10, 5, LabelSize.width, LabelSize.height);
label.text = message;
label.textColor = [UIColor whiteColor];
label.textAlignment = 1;
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:15];
label.numberOfLines = 0; //
[showview addSubview:label];
showview.frame = CGRectMake((SCREEN_WIDTH - LabelSize.width)/2, SCREEN_HEIGHT/2 +50+LabelSize.height, LabelSize.width+10, LabelSize.height+10);
[UIView animateWithDuration:duration animations:^{
showview.alpha = 0;
} completion:^(BOOL finished) {
[showview removeFromSuperview];
}];
}
最后在你需要的地方去调用此方法
[self showAlertMsg:@"你想输入的内容" Duration:3(希望出现多少秒)];
