有時當self.view上添加了scrollview時，在
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 中調用 [self.view endEditing:YES]時;并不能收起鍵盤，因為此時touch是觸發在scrollView上. 所以要想點擊scrollView的空白區域來收起鍵盤時，可以通過寫一個scrollView的擴展.代碼如下:
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if (![self isMemberOfClass:[UIScrollView class]]) {
} else {
[[self nextResponder] touchesBegan:touches withEvent:event];
if ([super respondsToSelector:@selector(touchesBegan:withEvent:)]) {
[super touchesBegan:touches withEvent:event];
}
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
if (![self isMemberOfClass:[UIScrollView class]]) {
} else {
[[self nextResponder] touchesMoved:touches withEvent:event];
if ([super respondsToSelector:@selector(touchesBegan:withEvent:)]) {
[super touchesMoved:touches withEvent:event];
}
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
if (![self isMemberOfClass:[UIScrollView class]]) {
} else {
[[self nextResponder] touchesEnded:touches withEvent:event];
if ([super respondsToSelector:@selector(touchesBegan:withEvent:)]) {
[super touchesEnded:touches withEvent:event];
}
}
}
在需要此功能的頁面控制器內添加以下代碼：
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[self.view endEditing:YES];
}
