[self buildAgreeTextViewFromString:NSLocalizedString(@"I agree to the #<ts>terms of service# and #<pp>privacy policy#",
@"PLEASE NOTE: please translate \"terms of service\" and \"privacy policy\" as well, and leave the #<ts># and #<pp># around your translations just as in the English version of this message.")];
- (void)buildAgreeTextViewFromString:(NSString *)localizedString
{
// 1. Split the localized string on the # sign:
NSArray *localizedStringPieces = [localizedString componentsSeparatedByString:@"#"];
// 2. Loop through all the pieces:
NSUInteger msgChunkCount = localizedStringPieces ? localizedStringPieces.count : 0;
CGPoint wordLocation = CGPointMake(0.0, 0.0);
for (NSUInteger i = 0; i < msgChunkCount; i++)
{
NSString *chunk = [localizedStringPieces objectAtIndex:i];
if ([chunk isEqualToString:@""])
{
continue; // skip this loop if the chunk is empty
}
// 3. Determine what type of word this is:
BOOL isTermsOfServiceLink = [chunk hasPrefix:@"<ts>"];
BOOL isPrivacyPolicyLink = [chunk hasPrefix:@"<pp>"];
BOOL isLink = (BOOL)(isTermsOfServiceLink || isPrivacyPolicyLink);
// 4. Create label, styling dependent on whether it's a link:
UILabel *label = [[UILabel alloc] init];
label.font = [UIFont systemFontOfSize:15.0f];
label.text = chunk;
label.userInteractionEnabled = isLink;
if (isLink)
{
label.textColor = [UIColor colorWithRed:110/255.0f green:181/255.0f blue:229/255.0f alpha:1.0];
label.highlightedTextColor = [UIColor yellowColor];
// 5. Set tap gesture for this clickable text:
SEL selectorAction = isTermsOfServiceLink ? @selector(tapOnTermsOfServiceLink:) : @selector(tapOnPrivacyPolicyLink:);
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self
action:selectorAction];
[label addGestureRecognizer:tapGesture];
// Trim the markup characters from the label:
if (isTermsOfServiceLink)
label.text = [label.text stringByReplacingOccurrencesOfString:@"<ts>" withString:@""];
if (isPrivacyPolicyLink)
label.text = [label.text stringByReplacingOccurrencesOfString:@"<pp>" withString:@""];
}
else
{
label.textColor = [UIColor whiteColor];
}
// 6. Lay out the labels so it forms a complete sentence again:
// If this word doesn't fit at end of this line, then move it to the next
// line and make sure any leading spaces are stripped off so it aligns nicely:
[label sizeToFit];
if (self.agreeTextContainerView.frame.size.width < wordLocation.x + label.bounds.size.width)
{
wordLocation.x = 0.0; // move this word all the way to the left...
wordLocation.y += label.frame.size.height; // ...on the next line
// And trim of any leading white space:
NSRange startingWhiteSpaceRange = [label.text rangeOfString:@"^\\s*"
options:NSRegularExpressionSearch];
if (startingWhiteSpaceRange.location == 0)
{
label.text = [label.text stringByReplacingCharactersInRange:startingWhiteSpaceRange
withString:@""];
[label sizeToFit];
}
}
// Set the location for this label:
label.frame = CGRectMake(wordLocation.x,
wordLocation.y,
label.frame.size.width,
label.frame.size.height);
// Show this label:
[self.agreeTextContainerView addSubview:label];
// Update the horizontal position for the next word:
wordLocation.x += label.frame.size.width;
}
}
以下是我处理这些链接上检测到的水龙头的方法。
- (void)tapOnTermsOfServiceLink:(UITapGestureRecognizer *)tapGesture
{
if (tapGesture.state == UIGestureRecognizerStateEnded)
{
NSLog(@"User tapped on the Terms of Service link");
}
}
- (void)tapOnPrivacyPolicyLink:(UITapGestureRecognizer *)tapGesture
{
if (tapGesture.state == UIGestureRecognizerStateEnded)
{
NSLog(@"User tapped on the Privacy Policy link");
}
}
var str = "Or, #<li>log in# to see your orders.";
var strParts = str.Split('#');
var ptWordLocation = new PointF (0, 0);
if (strParts.Length > 1) {
//Loop the parts of the string
foreach (var s in strParts) {
//Check for empty string
if (!String.IsNullOrEmpty (s)) {
var lbl = new UILabel ();
lbl.Font = lbl.Font.WithSize (15);
lbl.TextColor = cpAppConstants.TextColorMessage;
lbl.UserInteractionEnabled = s.Contains ("<li>");
lbl.Text = s.Replace ("<li>", "");
if (s.Contains ("<li>")) {
lbl.TextColor = UIColor.FromRGB (200, 95, 40);
//Set tap gesture for this clickable text:
var gesture = new UITapGestureRecognizer ();
gesture.AddTarget(() => buildLoginLabel_onTap(gesture));
lbl.AddGestureRecognizer (gesture);
}
lbl.SizeToFit ();
//Lay out the labels so it forms a complete sentence again
if (vw.Frame.Width < ptWordLocation.X + lbl.Bounds.Size.Width) {
ptWordLocation.X = 0f;
ptWordLocation.Y += lbl.Frame.Size.Height;
lbl.Text.Trim ();
}
lbl.Frame = new RectangleF (ptWordLocation.X, ptWordLocation.Y, lbl.Frame.Size.Width, lbl.Frame.Size.Height);
vw.AddSubview (lbl);
//Update the horizontal width
ptWordLocation.X += lbl.Frame.Size.Width;
}
}
}
func setText(newText:String){
// 1. Split the localized string on the # sign:
let localizedStringPieces:NSArray = newText.componentsSeparatedByString("#")
// 2. Loop through all the pieces:
var msgChunkCount:Int = localizedStringPieces.count
var wordLocation:CGPoint = CGPointMake(0.0, 0.0)
for (var i:Int = 0; i < msgChunkCount; i++){
let chunk:String = localizedStringPieces[i] as! String
if chunk == ""{
continue; // skip this loop if the chunk is empty
}
// 3. Determine what type of word this is:
let isTermsOfServiceLink:Bool = chunk.hasPrefix("<ts>")
let isPrivacyPolicyLink:Bool = chunk.hasPrefix("<pp>")
let isLink:Bool = (Bool)(isTermsOfServiceLink || isPrivacyPolicyLink)
var remainingText:String = chunk
while count(remainingText)>0{
// 4. Create label, styling dependent on whether it's a link:
let label:UILabel = UILabel()
label.font = UIFont.systemFontOfSize(methodFontSize)
label.text = remainingText
label.userInteractionEnabled = isLink
if (isLink){
label.textColor = UIColor(red: 110/255, green: 181/255, blue: 229/255, alpha: 1.0)
label.highlightedTextColor = UIColor.yellowColor()
// 5. Set tap gesture for this clickable text:
var selectorAction:Selector = isTermsOfServiceLink ? "tapOnTermsOfServiceLink" : "tapOnPrivacyPolicyLink"
let tapGesture:UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: selectorAction)
label.addGestureRecognizer(tapGesture)
// Trim the markup characters from the label:
if (isTermsOfServiceLink){
label.text = label.text?.stringByReplacingOccurrencesOfString("<ts>", withString: "", options: nil, range: nil)
}
if (isPrivacyPolicyLink){
label.text = label.text?.stringByReplacingOccurrencesOfString("<pp>", withString: "", options: nil, range: nil)
}
}else{
label.textColor = UIColor.whiteColor()
}
// If this chunk of text doesn't fit at end of this line, then move it to the next
// line and make sure any leading spaces are stripped off so it aligns nicely:
label.sizeToFit()
let labelHeight = label.frame.size.height
var leftOverText:String = fitLabelToWidth(label, width: self.textContainer.frame.size.width - wordLocation.x)
// if we can't fit anything onto this line then drop down
if label.text == "" {
//drop to a new line
wordLocation.x = 0.0 // move this word all the way to the left...
wordLocation.y += labelHeight; // ...on the next line. (Have to use a constant here because if label has no text it also has no height)
// refit the text
label.text = remainingText
leftOverText = fitLabelToWidth(label, width: self.textContainer.frame.size.width - wordLocation.x)
//NB WE ARE ASSUMING HERE THAT AFTER DROPPING DOWN AT LEAST SOME OF THIS TEXT WILL FIT
// IF THIS ISN'T THE CASE THEN THE LINE WOULD ALWAYS BE TOO BIG AND WE WOULD NEVER BE ABLE TO FIT IT ON ANYWAY!
}
// Set the location for this label:
label.frame = CGRectMake(wordLocation.x, wordLocation.y, label.frame.size.width, label.frame.size.height)
// Show this label:
self.textContainer.addSubview(label)
// Update the horizontal position for the next word:
wordLocation.x += label.frame.size.width;
// update our remaining text and get ready to go again
remainingText = leftOverText
}
}
}
// fit the text label (formatted externally) to the desired with, chopping off text to make it so
// return the remaining text that didn't make the cut as a string
func fitLabelToWidth(label:UILabel, width:CGFloat)->String{
let startingText:String = label.text!
println("Trying to fit ::\(startingText)::")
// if the string is null then we are done
if startingText == ""{
return ""
}
// if this fits already then we are done
label.sizeToFit()
if label.frame.size.width <= width{
return ""
}
// so now we have to loop round trying to get this to fit
var cutRange:Range<String.Index> = Range<String.Index>(start: startingText.startIndex, end: startingText.startIndex)
var searchRange:Range<String.Index>
var startSearchIndex:String.Index = startingText.startIndex
var lastSearchIndex:String.Index = startSearchIndex
var testText:String = ""
var lastText:String = ""
label.text = testText
label.sizeToFit()
while label.frame.size.width <= width{
// store off the last used text as this might be as far as we go
lastText = testText
lastSearchIndex = startSearchIndex
// set up the search range so we look for spaces missing out any previous ones
searchRange = Range<String.Index>(start: startSearchIndex, end: startingText.endIndex)
// cut out a range with the next occurrence of spaces
cutRange = startingText.rangeOfString(" ", options: NSStringCompareOptions.CaseInsensitiveSearch, range: searchRange, locale: nil)!
// get some text from the start of the string to our cut point (start)
testText = startingText.substringToIndex(cutRange.startIndex)
// move the search start to the point after the end of the spaces we just found
startSearchIndex = cutRange.endIndex
// try this in our label to see if it sizes ok
label.text = testText
label.sizeToFit()
}
// we leave the while when the string gets too big
label.text = lastText
label.sizeToFit()
return startingText.substringFromIndex(lastSearchIndex)
}
private let kURLString = "https://www.mywebsite.com"
添加属性化字符串的链接:
let originalText = "Please visit the website for more information."
let attributedOriginalText = NSMutableAttributedString(string: originalText)
let linkRange = attributedOriginalText.mutableString.range(of: "website")
attributedOriginalText.addAttribute(.link, value: kURLString, range: linkRange)
func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange) -> Bool {
if (URL.absoluteString == kURLString) {
// Do whatever you want here as the action to the user pressing your 'actionString'
}
return false
}