- 今天第一次发文章,才发现写个文章水也很深啊。
- 废话不多说。来说一说YsyNoticeView
- 由于马上项目需要更新,产品大大做了相关原型,于是我这个小小的程序猿开始了各种封装
[YsyNoticeView showInfo:@"网络出错" withStyle:YsyNoticeStyleTop];
- 其中YsyNoticeStyle是选择展示方式,有上中下三种效果。
typedef NS_ENUM(NSUInteger, YsyNoticeStyle)
{
YsyNoticeStyleTop = 0,
YsyNoticeStyleTableView,
YsyNoticeStyleBottom
} ;
- YsyNoticeStyleTableView,类似汽车之家刷新之后的效果。
+(void)showInfo:(NSString *)info withTableView:(UITableView *)tableView;
- 例如下图
-
实现方法其实很简单 简单解释下YsyNoticeStyleTop代码吧
-
第一步 创建topview 和UIImageView 还有label
UIView *topView = [[UIView alloc] initWithFrame:CGRectMake(0, -height, SCREEN_WIDTH, height)];
topView.userInteractionEnabled = YES;
topView.backgroundColor = [UIColor whiteColor];
topView.layer.shadowColor = [UIColor lightGrayColor].CGColor;
topView.layer.shadowOpacity = 1;
topView.layer.shadowRadius = 5;
topView.layer.shadowOffset = CGSizeMake(3.0, 3.0);
UIImageView *icon = [[UIImageView alloc] initWithFrame:CGRectMake(10, 64 - 20 - 11 , 20, 20)];
icon.image = [UIImage imageNamed:@"提示"];
[topView addSubview:icon];
UILabel *textLabel = [[UILabel alloc] initWithFrame:CGRectMake(10 + 20 + 10, 64 - 20 - 11, SCREEN_WIDTH - 40 - 20, 20)];
textLabel.text = info;
textLabel.textColor = [UIColor blackColor];
textLabel.font = [UIFont boldSystemFontOfSize:14.0];
[topView addSubview:textLabel];
- 第二步 给top添加手势以及使用RAC监听手势。(用于反馈用户上滑)
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] init];
[[pan rac_gestureSignal] subscribeNext:^(UIPanGestureRecognizer *pan) {
NSLog(@"%@", pan);
[UIView animateWithDuration:0.7 animations:^{
pan.view.frame = CGRectMake(0, -height, SCREEN_WIDTH, height);
} completion:^(BOOL finished) {
[pan.view removeFromSuperview];
}];
[pan.view removeGestureRecognizer:pan];
}];
[topView addGestureRecognizer:pan];
- 第三步 将topView直接添加到window上并且添加弹簧动画,然后再1.5秒之后自动上已隐藏
UIWindow *window = [UIApplication sharedApplication].keyWindow;
[window addSubview:topView];
// 弹簧动画,参数分别为:时长,延时,弹性(越小弹性越大),初始速度
[UIView animateWithDuration: 0.7 delay:0 usingSpringWithDamping:0.4 initialSpringVelocity:0.3 options:0 animations:^{
topView.frame = CGRectMake(0, 0, SCREEN_WIDTH, height);
} completion:^(BOOL finished) {
if (finished) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[UIView animateWithDuration:0.7 animations:^{
topView.frame = CGRectMake(0, -height, SCREEN_WIDTH, height);
} completion:^(BOOL finished) {
[topView removeFromSuperview];
}];
});
}
}];
}
- 这样就完成了。虽然其中还有很多细节可以完善(例如使用单例,防止重复创建 等等 )。但是暂时可以满足业务需求于是也没多多加雕琢。(^__^) 嘻嘻……-
- Git Hub下载地址**YsyNoticeViewDemo**