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[英]SKStoreReviewController how to detect that user has turned off Rate This App (RTA) in settings or 3 times limit has reached?
[英]Disable selection after an array has reached a limit
我正在使用HTagView库显示标签列表。 我已经填充了标签,现在我想限制最多选择3个。这是我尝试这样做的地方:
var selectedInterests = [Int]()
func tagView(_ tagView: HTagView, tagSelectionDidChange selectedIndices: [Int]) {
selectedInterests.removeAll()
for i in selectedIndices {
selectedInterests.append(i)
if selectedInterests.count > 3 {
print("limit reached")
selectedInterests.removeLast()
tagView.reloadData()
}
}
}
我试图删除数组的最后一项,但这也行不通。 大多数示例都基于表或collectionView的indexPath显示此示例。 如何通过两者都不实现呢?
您需要做的就是,如果已经选择的标签的数量大于3,则立即取消选择标签。我还将使该数量成为变量,您可以轻松更改以下值:
var maxTagsSelected = 3
func tagView(_ tagView: HTagView, tagSelectionDidChange selectedIndices: [Int]) {
if selectedIndices.count > maxTagsSelected {
tagView.deselectTagAtIndex(selectedIndices[maxTagsSelected])
}
}
变量maxTagsSelected将始终是selectedIndices中最后一个元素的索引。
尝试这个..
var selectedInterests = [Int]()
func tagView(_ tagView: HTagView, tagSelectionDidChange selectedIndices: [Int]) {
selectedInterests.removeAll()
selectedInterests = selectedIndices[0..<3]
}
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