[英]Dismiss SVProgressHUD with Tap Gesture
我需要向 SVProgressHUD 添加一个UITapGestureRecognizer 。 SVProgressHUD 已经可以使用-(void) dismiss;
. 此代码将根据秒关闭动画。
- (void)dismiss {
for (UIGestureRecognizer *gesture in [[[self class] sharedView] gestureRecognizers]) {
[[[self class] sharedView] removeGestureRecognizer:gesture];
}
NSDictionary *userInfo = [self notificationUserInfo];
[[NSNotificationCenter defaultCenter] postNotificationName:SVProgressHUDWillDisappearNotification
object:nil
userInfo:userInfo];
self.activityCount = 0;
[UIView animateWithDuration:0.15
delay:0
options:UIViewAnimationCurveEaseIn | UIViewAnimationOptionAllowUserInteraction
animations:^{
self.hudView.transform = CGAffineTransformScale(self.hudView.transform, 0.8, 0.8);
if(self.isClear) // handle iOS 7 UIToolbar not answer well to hierarchy opacity change
self.hudView.alpha = 0;
else
self.alpha = 0;
}
completion:^(BOOL finished){
if(self.alpha == 0 || self.hudView.alpha == 0) {
self.alpha = 0;
self.hudView.alpha = 0;
[[NSNotificationCenter defaultCenter] removeObserver:self];
[self cancelRingLayerAnimation];
[self addTapGestureToDismiss];
[_hudView removeFromSuperview];
_hudView = nil;
[_overlayView removeFromSuperview];
_overlayView = nil;
[_indefiniteAnimatedView removeFromSuperview];
_indefiniteAnimatedView = nil;
UIAccessibilityPostNotification(UIAccessibilityScreenChangedNotification, nil);
[[NSNotificationCenter defaultCenter] postNotificationName:SVProgressHUDDidDisappearNotification
object:nil
userInfo:userInfo];
// Tell the rootViewController to update the StatusBar appearance
UIViewController *rootController = [[UIApplication sharedApplication] keyWindow].rootViewController;
if ([rootController respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {
[rootController setNeedsStatusBarAppearanceUpdate];
}
// uncomment to make sure UIWindow is gone from app.windows
//NSLog(@"%@", [UIApplication sharedApplication].windows);
//NSLog(@"keyWindow = %@", [UIApplication sharedApplication].keyWindow);
}
}];
}
我的思考过程是将tapGesture 代码添加到dismiss 方法中。 这是我到目前为止所写的。
- (void)addTapGestureToDismiss {
// Creation and initializer of the tap gesture
UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc]
initWithTarget:self action:@selector(dismiss)];
// Specify that the gesture must be a single tap
tapRecognizer.numberOfTapsRequired = 1;
// Add the tap gesture recognizer to the view
[[[self class] sharedView] addGestureRecognizer:tapRecognizer];
}
如您所见,我只是在初始化 tapGesture。 我遇到了将它放在几个地方并导致应用程序只有一次点击的问题。 我在这个过程中非常困惑。 我该不该
基于 Z.Hung 的回答,您可以在 SVProgressHUD 上创建一个类别,这样您就不必在每个使用它的视图控制器中重复此代码。
用法
只需导入此类别并调用
[SVProgressHUD showDismissableErrorWithStatus:@"Error message here"];
代码
@interface SVProgressHUD (Dismissable)
+ (void)showDismissableErrorWithStatus:(NSString*)status;
@end
@implementation SVProgressHUD (Dismissable)
+ (void)showDismissableErrorWithStatus:(NSString*)status {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleHUDTappedNotification:) name:SVProgressHUDDidReceiveTouchEventNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleHUDDisappearedNotification:) name:SVProgressHUDWillDisappearNotification object:nil];
[SVProgressHUD showErrorWithStatus: status];
}
#pragma mark - NSNotificationCenter
+ (void)handleHUDTappedNotification: (NSNotification *)notification {
[SVProgressHUD dismiss];
}
+ (void)handleHUDDisappearedNotification: (NSNotification *)notification {
[[NSNotificationCenter defaultCenter] removeObserver:self name:SVProgressHUDDidReceiveTouchEventNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:SVProgressHUDWillDisappearNotification object:nil];
}
@end
斯威夫特 4
import SVProgressHUD
/// Ref: https://stackoverflow.com/a/41111242/425694
extension SVProgressHUD {
public static func showDismissableError(with status: String) {
let nc = NotificationCenter.default
nc.addObserver(
self, selector: #selector(hudTapped(_:)),
name: NSNotification.Name.SVProgressHUDDidReceiveTouchEvent,
object: nil
)
nc.addObserver(
self, selector: #selector(hudDisappeared(_:)),
name: NSNotification.Name.SVProgressHUDWillDisappear,
object: nil
)
SVProgressHUD.showError(withStatus: status)
SVProgressHUD.setDefaultMaskType(.clear)
}
@objc
private static func hudTapped(_ notification: Notification) {
SVProgressHUD.dismiss()
SVProgressHUD.setDefaultMaskType(.none)
}
@objc
private static func hudDisappeared(_ notification: Notification) {
let nc = NotificationCenter.default
nc.removeObserver(self, name: NSNotification.Name.SVProgressHUDDidReceiveTouchEvent, object: nil)
nc.removeObserver(self, name: NSNotification.Name.SVProgressHUDWillDisappear, object: nil)
SVProgressHUD.setDefaultMaskType(.none)
}
}
更新 2.0
一段时间后,我偶然发现了这个解决方案并记住了这个问题,据我测试,它有效。 只需在 ViewController 类的 viewWillAppear 中添加一个观察者。 无需像我之前的答案一样修改库。
-(void)viewWillAppear:(BOOL)animated{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(tapToDismiss:) name:SVProgressHUDDidReceiveTouchEventNotification object:nil];
//Other initializing
}
-(void)tapToDismiss:(NSNotification *)notification{
[SVProgressHUD dismiss];
//maybe other code to stop whatever your progress is
}
即使您有掩码类型,这也应该关闭 SVProgressHUD。
完成后使用它来删除观察者(如在 viewDidDisappear 中),否则它将在应用程序的整个生命周期中都存在。
[[NSNotificationCenter defaultCenter] removeObserver:self name:SVProgressHUDDidReceiveTouchEventNotification object:nil];
信用: http : //kevsaidwhat.blogspot.my/2013/06/cancel-svprogresshud-process-by-tapping.html
完整的 swift 实现有人可能会发现它很有用。 这是 BaseViewController
func showProgressHud(){
SVProgressHUD.show()
SVProgressHUD.setDefaultMaskType(.clear)
}
func hideProgressHud(){
SVProgressHUD.dismiss()
}
//Hide progress hud on user tap on unresponsive api call
func hideProgressHudOnUserTap(){
NotificationCenter.default.addObserver(self, selector: #selector(self.tapToDismiss(notification:)), name: NSNotification.Name.SVProgressHUDDidReceiveTouchEvent, object: nil)
}
@objc func tapToDismiss(notification: Notification) {
hideProgressHud()
}
func removeProgressHudObserver(){
NotificationCenter.default.removeObserver(self, name: NSNotification.Name.SVProgressHUDDidReceiveTouchEvent, object: nil)
}
然后你像这样在你的视图控制器中调用它
override func viewWillAppear(_ animated: Bool) {
hideProgressHudOnUserTap()
}
override func viewDidDisappear(_ animated: Bool) {
removeProgressHudObserver()
}
实现这一点的简单方法是:
class HUDManager {
@objc
class func dismissHUD() {
SVProgressHUD.dismiss()
}
}
SVProgressHUDDidReceiveTouchEvent
通知:NotificationCenter.default.addObserver(HUDManager.self,
selector: #selector(HUDManager.dismissHUD),
name: .SVProgressHUDDidReceiveTouchEvent,
object: nil)
谢谢@charmingToad,如果在这里回答,我想在上面发布一些更优化和功能更强大的解决方案。
在我的情况下,如果用户点击并取消,我需要知道取消操作以取消操作。
import SVProgressHUD
extension SVProgressHUD {
private static var dismissCompletion: (() -> ())?
public static func showDismissable(with status: String, tapDismissed: (() -> ())? = nil) {
dismissCompletion = tapDismissed
let notificationCenter = NotificationCenter.default
notificationCenter.addObserver(
self, selector: #selector(hudTapped(_:)),
name: NSNotification.Name.SVProgressHUDDidReceiveTouchEvent,
object: nil
)
notificationCenter.addObserver(
self, selector: #selector(hudDisappeared(_:)),
name: NSNotification.Name.SVProgressHUDWillDisappear,
object: nil
)
SVProgressHUD.show(withStatus: status)
SVProgressHUD.setDefaultMaskType(.black)
}
@objc
private static func hudTapped(_ notification: Notification) {
SVProgressHUD.dismiss()
SVProgressHUD.setDefaultMaskType(.none)
dismissCompletion?()
}
@objc
private static func hudDisappeared(_ notification: Notification) {
dismissCompletion = nil
let notificationCenter = NotificationCenter.default
notificationCenter.removeObserver(self, name: NSNotification.Name.SVProgressHUDDidReceiveTouchEvent, object: nil)
notificationCenter.removeObserver(self, name: NSNotification.Name.SVProgressHUDWillDisappear, object: nil)
SVProgressHUD.setDefaultMaskType(.none)
}
}
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