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support spannableStringBuilder trim without loosing span applied on it #1

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Merged
merged 1 commit into from
Jun 8, 2020
Merged

support spannableStringBuilder trim without loosing span applied on it #1

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33 changes: 28 additions & 5 deletions showmoreless/src/main/java/com/noowenz/showmoreless/ShowMoreLess.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,7 @@ import android.animation.LayoutTransition
import android.content.Context
import android.graphics.Color
import android.os.Handler
import android.text.SpannableString
import android.text.SpannableStringBuilder
import android.text.Spanned
import android.text.TextPaint
import android.text.*
import android.text.method.LinkMovementMethod
import android.text.style.ClickableSpan
import android.view.View
Expand Down Expand Up @@ -79,7 +76,7 @@ class ShowMoreLess private constructor(builder: Builder) {

textView.post(Runnable {
try {
val trimText = text.toString().trim()
val trimText = trimText(text)
textView.text = trimText
if (trimText.isEmpty())
return@Runnable
Expand Down Expand Up @@ -280,6 +277,32 @@ class ShowMoreLess private constructor(builder: Builder) {
}
}

/**
* Support [SpannableStringBuilder] trim without loosing span added on it
*/
private fun trimText(text: CharSequence): CharSequence {
var length = text.length
val trimmedLength: Int = TextUtils.getTrimmedLength(text)
if (length > trimmedLength) {
val builder = SpannableStringBuilder(text)
// Remove white spaces from the start.
var start = 0
while (start < length && builder[start] <= ' ') {
start++
}
builder.delete(0, start)
length -= start
// Remove white spaces from the end.
var end = length
while (end >= 0 && builder[end - 1] <= ' ') {
end--
}
builder.delete(end, length)
return builder
}
return text
}

fun setListener(listener: OnShowMoreLessClickedListener) {
onShowMoreLessClickedListener = listener
}
Expand Down