我有文本“Android是一个软件堆栈”。在这个文本中,我想设置“堆栈”文本为可点击。所以,如果你点击它,它将重定向到一个新的活动(不在浏览器中)。
我试过了,但没有找到解决办法。
我有文本“Android是一个软件堆栈”。在这个文本中,我想设置“堆栈”文本为可点击。所以,如果你点击它,它将重定向到一个新的活动(不在浏览器中)。
我试过了,但没有找到解决办法。
当前回答
我的功能使TextView内的多个链接 更新2020:现在这个函数能够支持多个相同的文本链接在1 TextView,但记得把链接在正确的顺序
fun TextView.makeLinks(vararg links: Pair<String, View.OnClickListener>) {
val spannableString = SpannableString(this.text)
var startIndexOfLink = -1
for (link in links) {
val clickableSpan = object : ClickableSpan() {
override fun updateDrawState(textPaint: TextPaint) {
// use this to change the link color
textPaint.color = textPaint.linkColor
// toggle below value to enable/disable
// the underline shown below the clickable text
textPaint.isUnderlineText = true
}
override fun onClick(view: View) {
Selection.setSelection((view as TextView).text as Spannable, 0)
view.invalidate()
link.second.onClick(view)
}
}
startIndexOfLink = this.text.toString().indexOf(link.first, startIndexOfLink + 1)
// if(startIndexOfLink == -1) continue // todo if you want to verify your texts contains links text
spannableString.setSpan(
clickableSpan, startIndexOfLink, startIndexOfLink + link.first.length,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
this.movementMethod =
LinkMovementMethod.getInstance() // without LinkMovementMethod, link can not click
this.setText(spannableString, TextView.BufferType.SPANNABLE)
}
使用
my_text_view.makeLinks(
Pair("Terms of Service", View.OnClickListener {
Toast.makeText(applicationContext, "Terms of Service Clicked", Toast.LENGTH_SHORT).show()
}),
Pair("Privacy Policy", View.OnClickListener {
Toast.makeText(applicationContext, "Privacy Policy Clicked", Toast.LENGTH_SHORT).show()
}))
XML
<TextView
android:id="@+id/my_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Please accept Terms of Service and Privacy Policy"
android:textColorHighlight="#f00" // background color when pressed
android:textColorLink="#0f0"
android:textSize="20sp" />
DEMO
参考
解决方案清除链接高亮选择遵循https://stackoverflow.com/a/19445108/5381331
其他回答
Kotlin上复杂但通用的解决方案
/*
* Receive Pair of Text and Action and set it clickable and appearing as link
* */
fun TextView.setClickableText(vararg textToSpanAndClickAction: Pair<String, (String) -> Unit>) {
val builder = SpannableStringBuilder(text.toString())
textToSpanAndClickAction.forEach { argPair ->
val clickableSpan = object : ClickableSpan() {
override fun onClick(widget: View) {
argPair.second.invoke(argPair.first)
}
}
this.text.toString().let { fullText ->
val indexOfFirst = fullText.indexOf(argPair.first)
val indexOfLast = indexOfFirst + argPair.first.length
if (indexOfFirst < 0){
//No match found
return
}else{
builder.setSpan(
clickableSpan,
indexOfFirst,
indexOfLast,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
}
}
this.text = builder
this.movementMethod = LinkMovementMethod.getInstance()
}
Kotlin Spannable
大胆的,
mySpannable.setSpan(new StyleSpan(Typeface.BOLD),termStart,termStop,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
您可以使用此方法设置可点击的值
public void setClickableString(String clickableValue, String wholeValue, TextView yourTextView){
String value = wholeValue;
SpannableString spannableString = new SpannableString(value);
int startIndex = value.indexOf(clickableValue);
int endIndex = startIndex + clickableValue.length();
spannableString.setSpan(new ClickableSpan() {
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
ds.setUnderlineText(false); // <-- this will remove automatic underline in set span
}
@Override
public void onClick(View widget) {
// do what you want with clickable value
}
}, startIndex, endIndex, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
yourTextView.setText(spannableString);
yourTextView.setMovementMethod(LinkMovementMethod.getInstance()); // <-- important, onClick in ClickableSpan won't work without this
}
下面是如何使用它:
TextView myTextView = findViewById(R.id.myTextView);
setClickableString("stack", "Android is a Software stack", myTextView);
我做了这个helper方法,以防有人需要从字符串中开始和结束位置。
public static TextView createLink(TextView targetTextView, String completeString,
String partToClick, ClickableSpan clickableAction) {
SpannableString spannableString = new SpannableString(completeString);
// make sure the String is exist, if it doesn't exist
// it will throw IndexOutOfBoundException
int startPosition = completeString.indexOf(partToClick);
int endPosition = completeString.lastIndexOf(partToClick) + partToClick.length();
spannableString.setSpan(clickableAction, startPosition, endPosition,
Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
targetTextView.setText(spannableString);
targetTextView.setMovementMethod(LinkMovementMethod.getInstance());
return targetTextView;
}
下面是你如何使用它
private void initSignUp() {
String completeString = "New to Reddit? Sign up here.";
String partToClick = "Sign up";
ClickableTextUtil
.createLink(signUpEditText, completeString, partToClick,
new ClickableSpan() {
@Override
public void onClick(View widget) {
// your action
Toast.makeText(activity, "Start Sign up activity",
Toast.LENGTH_SHORT).show();
}
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
// this is where you set link color, underline, typeface etc.
int linkColor = ContextCompat.getColor(activity, R.color.blumine);
ds.setColor(linkColor);
ds.setUnderlineText(false);
}
});
}
这是一个kotlin扩展(不工作,如果文本重复)
textView.makeTextClickable(
contentText = "Hello world",
clickableText = "world",
isBoldText = true,
onClick = {
openPageInBrowser(BuildConfig.PRIVACY_POLICY_URL)
}
)
internal fun TextView.makeTextClickable(
contentText: String,
clickableText: String,
onClick: () -> Unit,
isUnderlineText: Boolean = false,
isBoldText: Boolean = false
) {
val spannableString = SpannableString(contentText)
val clickableSpan = object : ClickableSpan() {
override fun onClick(widget: View) {
onClick()
}
override fun updateDrawState(ds: TextPaint) {
super.updateDrawState(ds)
ds.isUnderlineText = isUnderlineText
ds.isFakeBoldText = isBoldText
}
}
val clickableTextStartIndex = text.indexOf(clickableText)
val clickableTextEndIndex = clickableTextStartIndex + clickableText.length
spannableString.setSpan(
clickableSpan,
clickableTextStartIndex,
clickableTextEndIndex,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
)
this.text = spannableString
this.movementMethod = LinkMovementMethod.getInstance()
}