默认情况下,如果您在 iPhone 或 iPad 上点击空格键两次,则不会得到“ ”(两个空格),而是得到“. ”(句点后跟一个空格)。有什么方法可以在代码中禁用此快捷方式吗?
更新:通过 UITextInputTraits 禁用自动更正不起作用。
更新2:明白了!请参阅下面我的帖子。
最佳答案
我有一个基于上面 Chaise 给出的答案。
Chaise 的方法不允许您依次键入两个空格 - 在某些情况下这是不可取的。这是完全关闭自动句点插入的方法:
swift
在委托(delegate)方法中:
func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
//Ensure we're not at the start of the text field and we are inserting text
if range.location > 0 && text.count > 0
{
let whitespace = CharacterSet.whitespaces
let start = text.unicodeScalars.startIndex
let location = textView.text.unicodeScalars.index(textView.text.unicodeScalars.startIndex, offsetBy: range.location - 1)
//Check if a space follows a space
if whitespace.contains(text.unicodeScalars[start]) && whitespace.contains(textView.text.unicodeScalars[location])
{
//Manually replace the space with your own space, programmatically
textView.text = (textView.text as NSString).replacingCharacters(in: range, with: " ")
//Make sure you update the text caret to reflect the programmatic change to the text view
textView.selectedRange = NSMakeRange(range.location + 1, 0)
//Tell UIKit not to insert its space, because you've just inserted your own
return false
}
}
return true
}
现在您可以按您喜欢的次数和速度点击空格键,仅插入空格。
目标-C
在委托(delegate)方法中:
- (BOOL) textView:(UITextView*)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString*)text
添加以下代码:
//Check if a space follows a space
if ( (range.location > 0 && [text length] > 0 &&
[[NSCharacterSet whitespaceCharacterSet] characterIsMember:[text characterAtIndex:0]] &&
[[NSCharacterSet whitespaceCharacterSet] characterIsMember:[[textView text] characterAtIndex:range.location - 1]]) )
{
//Manually replace the space with your own space, programmatically
textView.text = [textView.text stringByReplacingCharactersInRange:range withString:@" "];
//Make sure you update the text caret to reflect the programmatic change to the text view
textView.selectedRange = NSMakeRange(range.location+1, 0);
//Tell Cocoa not to insert its space, because you've just inserted your own
return NO;
}
关于iPhone:禁用 "double-tap spacebar for ."快捷方式?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2576561/