前言
SpannableStringBuilder和SpannableString功能基本一样,不过SpannableStringBuilder可以拼接,主要是通过setSpan来实现各种效果,主要的方法如下:
start: 指定Span的开始位置
end: 指定Span的结束位置,并不包括这个位置。
flags:取值有如下四个
Spannable. SPAN_INCLUSIVE_EXCLUSIVE:前面包括,后面不包括,即在文本前插入新的文本会应用该样式,而在文本后插入新文本不会应用该样式
Spannable. SPAN_INCLUSIVE_INCLUSIVE:前面包括,后面包括,即在文本前插入新的文本会应用该样式,而在文本后插入新文本也会应用该样式
Spannable. SPAN_EXCLUSIVE_EXCLUSIVE:前面不包括,后面不包括
Spannable. SPAN_EXCLUSIVE_INCLUSIVE:前面不包括,后面包括
what: 对应的各种Span,不同的Span对应不同的样式。已知的可用类有:
BackgroundColorSpan : 文本背景色
ForegroundColorSpan : 文本颜色
MaskFilterSpan : 修饰效果,如模糊(BlurMaskFilter)浮雕
RasterizerSpan : 光栅效果
StrikethroughSpan : 删除线
SuggestionSpan : 相当于占位符
UnderlineSpan : 下划线
AbsoluteSizeSpan : 文本字体(绝对大小)
DynamicDrawableSpan : 设置图片,基于文本基线或底部对齐。
ImageSpan : 图片
RelativeSizeSpan : 相对大小(文本字体)
ScaleXSpan : 基于x轴缩放
StyleSpan : 字体样式:粗体、斜体等
SubscriptSpan : 下标(数学公式会用到)
SuperscriptSpan : 上标(数学公式会用到)
TextAppearanceSpan : 文本外貌(包括字体、大小、样式和颜色)
TypefaceSpan : 文本字体
URLSpan : 文本超链接
ClickableSpan : 点击事件
简单使用示例
初始化SpannableString或SpannableStringBuilder,然后设置对应的setPan就可以实现对应的效果。
SpannableString spannableString = new SpannableString("要设置的内容");
ForegroundColorSpan colorSpan = new ForegroundColorSpan(Color.parseColor("#009ad6"));
spannableString.setSpan(colorSpan, 0, 8, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
((TextView)findViewById(R.id.mode1)).setText(spannableString);
具体使用详情可以参考:强大的SpannableStringBuilder
封装使用
对很多功能都可以封装,简化使用,这里使用了扩展函数,更方便在Kotlin中使用,不过在Java中也可以使用,使用方法如下:
第一种情况,要设置的内容已经是一段完整的内容
注意:链式调用时,只需要初始化第一个src就可以了,后续都会默认使用第一个,如果后续继续初始化src, 会导致前面的设置无效,只有最后一个生效。target和range都是为了确定要改变的文字的范围,两个初始化一个即可。
-
对整个字符串设置效果
src 和target默认等于TextView的text
//对整个 text 设置方式一,textView已经设置过内容,可以不用初始化src tvTvOne.sizeSpan(textSize = 20f) //对整个 text 设置方式二 tvTvOne2.typeSpan(src = "全部文字加粗",target = "全部文字加粗", type = SsbKtx.type_bold)
-
设置部分文字效果
type 有3个,对应加粗,倾斜,加粗倾斜
//设置部分文字效果 //tvTv2.typeSpan(range = 2..4,type = SsbKtx.type_bold) tvTv2.typeSpan(target = "部分",type = SsbKtx.type_bold) //设置加粗倾斜效果 tvTv3.typeSpan(range = 0..4,type = SsbKtx.type_bold_italic)
-
对同一个文字设置多个效果
对同一个部分做多种效果,只能第一个设置 src, 后续设置会导致前面的无效。
// tvTv4.typeSpan(range = 0..4,type = SsbKtx.type_bold_italic) // .foregroundColorIntSpan(range = 0..4,color = Color.GREEN) // .strikethroughSpan(range = 0..4) tvTv4.typeSpan(src = "只能这个可以设置 src,后面的再设置会导致前面效果无效", range = 0..4,type = SsbKtx.type_bold_italic) .foregroundColorIntSpan(range = 0..4,color = Color.GREEN) .strikethroughSpan(range = 0..4)
-
对多个不同的文字分别设置不同的效果
tvTv5.typeSpan(range = 0..4,type = SsbKtx.type_bold_italic) .foregroundColorIntSpan(range = 7..11,color = Color.BLUE)
-
设置部分点击
tvTv6.clickIntSpan(range = 0..4){ Toast.makeText(this, "hello", Toast.LENGTH_SHORT).show() }
-
设置部分超链接
tvTv7.urlSpan(range = 0..4,url = "https://www.baidu.com")
第二种情况,拼接成一个完整的字符串
-
拼接成完整的内容
tvTv8.text = "拼接一段文字" tvTv8.appendTypeSpan("加粗",SsbKtx.type_bold) .strikethroughSpan(target = "加粗")//对同一部分文字做多个效果 .appendForegroundColorIntSpan("改变字体颜色",Color.RED)
如果想对拼接的内容做多个效果,可以在其后面调用对应的方法,只要traget或是range正确即可。
完整代码
object SsbKtx {
const val flag = SpannableStringBuilder.SPAN_EXCLUSIVE_EXCLUSIVE
const val type_bold = Typeface.BOLD
const val type_italic = Typeface.ITALIC
const val type_bold_italic = Typeface.BOLD_ITALIC
}
//-------------------CharSequence相关扩展-----------------------
/**
*CharSequence不为 null 或者 empty
*/
fun CharSequence?.isNotNullOrEmpty() = !isNullOrEmpty()
/**
*获取一段文字在文字中的范围
* @param target
* @return
*/
fun CharSequence.range(target: CharSequence): IntRange {
val start = this.indexOf(target.toString())
return start..(start + target.length)
}
/**
*将一段指定的文字改变大小
* @return
*/
fun CharSequence.sizeSpan(range: IntRange, textSize: Int): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(AbsoluteSizeSpan(textSize), range.first, range.last, SsbKtx.flag)
}
}
/**
*将一段指定的文字,设置类型,是否加粗,倾斜
* @return
*/
fun CharSequence.typeSpan(range: IntRange, type: Int): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(StyleSpan(type), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置下划线
* @param range
* @return
*/
fun CharSequence.underlineSpan(range: IntRange): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(UnderlineSpan(), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置删除线
* @param range
* @return
*/
fun CharSequence.strikethroughSpan(range: IntRange): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(StrikethroughSpan(), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置文字颜色
* @param range
* @return
*/
fun CharSequence.foregroundColorSpan(range: IntRange, color: Int = Color.RED): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(ForegroundColorSpan(color), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置文字背景色
* @param range
* @return
*/
fun CharSequence.backgroundColorSpan(range: IntRange, color: Int = Color.RED): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(BackgroundColorSpan(color), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置引用线颜色
* @param range
* @return
*/
fun CharSequence.quoteColorSpan(range: IntRange, color: Int = Color.RED): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(QuoteSpan(color), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置字体大小比例
* @param range
* @return
*/
fun CharSequence.proportionSpan(range: IntRange, proportion: Float): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(RelativeSizeSpan(proportion), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置横向字体大小比例
* @param range
* @return
*/
fun CharSequence.proportionXSpan(range: IntRange, proportion: Float): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(ScaleXSpan(proportion), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置上标
* @param range
* @return
*/
fun CharSequence.superscriptSpan(range: IntRange): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(SuperscriptSpan(), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置下标
* @param range
* @return
*/
fun CharSequence.subscriptSpan(range: IntRange): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(SubscriptSpan(), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置字体
* @param range
* @return
*/
fun CharSequence.fontSpan(range: IntRange, font: String): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(TypefaceSpan(font), range.first, range.last, SsbKtx.flag)
}
}
@RequiresApi(Build.VERSION_CODES.P)
fun CharSequence.fontSpan(range: IntRange, font: Typeface): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(TypefaceSpan(font), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置对齐方式
* @param range
* @return
*/
fun CharSequence.alignSpan(range: IntRange, align: Layout.Alignment): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(AlignmentSpan.Standard(align), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置url,超链接
* @param range
* @return
*/
fun CharSequence.urlSpan(range: IntRange, url: String): CharSequence {
return SpannableStringBuilder(this).apply {
setSpan(URLSpan(url), range.first, range.last, SsbKtx.flag)
}
}
/**
*设置click,将一段文字中指定range的文字添加颜色和点击事件
* @param range
* @return
*/
fun CharSequence.clickSpan(
range: IntRange,
color: Int = Color.RED,
isUnderlineText: Boolean = false,
clickAction: () -> Unit
): CharSequence {
return SpannableString(this).apply {
val clickableSpan = object : ClickableSpan() {
override fun onClick(widget: View) {
clickAction()
}
override fun updateDrawState(ds: TextPaint) {
ds.color = color
ds.isUnderlineText = isUnderlineText
}
}
setSpan(clickableSpan, range.first, range.last, SsbKtx.flag)
}
}
//-------------------TextView相关扩展--------------------------
/**
*设置目标文字大小, src,target 为空时,默认设置整个 text
* @return
*/
fun TextView?.sizeSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
@DimenRes textSize: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
textSize == 0 -> this
range != null -> {
text = src.sizeSpan(range, ResUtils.getDimensionPixelSize(textSize))
this
}
target.isNotNullOrEmpty() -> {
text = src.sizeSpan(src.range(target!!), ResUtils.getDimensionPixelSize(textSize))
this
}
else -> this
}
}
/**
*设置目标文字大小, src,target 为空时,默认设置整个 text
* @return
*/
fun TextView?.sizeSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
textSize: Float
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
textSize == 0f -> this
range != null -> {
text = src.sizeSpan(range, DensityUtils.dp2px(textSize))
this
}
target.isNotNullOrEmpty() -> {
text = src.sizeSpan(src.range(target!!), DensityUtils.dp2px(textSize))
this
}
else -> this
}
}
/**
*追加内容设置字体大小
* @param str
* @param textSize
* @return
*/
fun TextView?.appendSizeSpan(str: String?, textSize: Float): TextView? {
str?.let {
this?.append(it.sizeSpan(0..it.length, DensityUtils.dp2px(textSize)))
}
return this
}
fun TextView?.appendSizeSpan(str: String?, @DimenRes textSize: Int): TextView? {
str?.let {
this?.append(it.sizeSpan(0..it.length, ResUtils.getDimensionPixelSize(textSize)))
}
return this
}
/**
*设置目标文字类型(加粗,倾斜,加粗倾斜),src,target 为空时,默认设置整个 text
* @return
*/
fun TextView?.typeSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
type: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.typeSpan(range, type)
this
}
target.isNotNullOrEmpty() -> {
text = src.typeSpan(src.range(target!!), type)
this
}
else -> this
}
}
fun TextView?.appendTypeSpan(str: String?, type: Int): TextView? {
str?.let {
this?.append(it.typeSpan(0..it.length, type))
}
return this
}
/**
*设置目标文字下划线
* @return
*/
fun TextView?.underlineSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.underlineSpan(range)
this
}
target.isNotNullOrEmpty() -> {
text = src.underlineSpan(src.range(target!!))
this
}
else -> this
}
}
fun TextView?.appendUnderlineSpan(str: String?): TextView? {
str?.let {
this?.append(it.underlineSpan(0..it.length))
}
return this
}
/**
*设置目标文字删除线
* @return
*/
fun TextView?.strikethroughSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.strikethroughSpan(range)
this
}
target.isNotNullOrEmpty() -> {
text = src.strikethroughSpan(src.range(target!!))
this
}
else -> this
}
}
fun TextView?.appendStrikethroughSpan(str: String?): TextView? {
str?.let {
this?.append(it.strikethroughSpan(0..it.length))
}
return this
}
/**
*设置目标文字颜色
* @return
*/
fun TextView?.foregroundColorIntSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
color: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.foregroundColorSpan(range, color)
this
}
target.isNotNullOrEmpty() -> {
text = src.foregroundColorSpan(src.range(target!!), color)
this
}
else -> this
}
}
fun TextView?.appendForegroundColorIntSpan(str: String?, color: Int): TextView? {
str?.let {
this?.append(it.foregroundColorSpan(0..it.length, color))
}
return this
}
/**
*设置目标文字颜色
* @return
*/
fun TextView?.foregroundColorSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
@ColorRes color: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.foregroundColorSpan(range, ResUtils.getColor(color))
this
}
target.isNotNullOrEmpty() -> {
text = src.foregroundColorSpan(src.range(target!!), ResUtils.getColor(color))
this
}
else -> this
}
}
fun TextView?.appendForegroundColorSpan(str: String?, @ColorRes color: Int): TextView? {
str?.let {
this?.append(it.foregroundColorSpan(0..it.length, ResUtils.getColor(color)))
}
return this
}
/**
*设置目标文字背景颜色
* @return
*/
fun TextView?.backgroundColorIntSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
color: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.backgroundColorSpan(range, color)
this
}
target.isNotNullOrEmpty() -> {
text = src.backgroundColorSpan(src.range(target!!), color)
this
}
else -> this
}
}
fun TextView?.appendBackgroundColorIntSpan(str: String?, color: Int): TextView? {
str?.let {
this?.append(it.backgroundColorSpan(0..it.length, color))
}
return this
}
/**
*设置目标文字背景颜色
* @return
*/
fun TextView?.backgroundColorSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
@ColorRes color: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.backgroundColorSpan(range, ResUtils.getColor(color))
this
}
target.isNotNullOrEmpty() -> {
text = src.backgroundColorSpan(src.range(target!!), ResUtils.getColor(color))
this
}
else -> this
}
}
fun TextView?.appendBackgroundColorSpan(str: String?, @ColorRes color: Int): TextView? {
str?.let {
this?.append(it.backgroundColorSpan(0..it.length, ResUtils.getColor(color)))
}
return this
}
/**
*设置目标文字引用线颜色
* @return
*/
fun TextView?.quoteColorIntSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
color: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.quoteColorSpan(range, color)
this
}
target.isNotNullOrEmpty() -> {
text = src.quoteColorSpan(src.range(target!!), color)
this
}
else -> this
}
}
fun TextView?.appendQuoteColorIntSpan(str: String?, color: Int): TextView? {
str?.let {
this?.append(it.quoteColorSpan(0..it.length, color))
}
return this
}
/**
*设置目标文字引用线颜色
* @return
*/
fun TextView?.quoteColorSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
@ColorRes color: Int
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.quoteColorSpan(range, ResUtils.getColor(color))
this
}
target.isNotNullOrEmpty() -> {
text = src.quoteColorSpan(src.range(target!!), ResUtils.getColor(color))
this
}
else -> this
}
}
fun TextView?.appendQuoteColorSpan(str: String?, @ColorRes color: Int): TextView? {
str?.let {
this?.append(it.quoteColorSpan(0..it.length, ResUtils.getColor(color)))
}
return this
}
/**
*设置目标文字字体大小比例
* @return
*/
fun TextView?.proportionSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
proportion: Float
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.proportionSpan(range, proportion)
this
}
target.isNotNullOrEmpty() -> {
text = src.proportionSpan(src.range(target!!), proportion)
this
}
else -> this
}
}
fun TextView?.appendProportionSpan(str: String?, proportion: Float): TextView? {
str?.let {
this?.append(it.proportionSpan(0..it.length, proportion))
}
return this
}
/**
*设置目标文字字体横向大小比例
* @return
*/
fun TextView?.proportionXSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
proportion: Float
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.proportionXSpan(range, proportion)
this
}
target.isNotNullOrEmpty() -> {
text = src.proportionXSpan(src.range(target!!), proportion)
this
}
else -> this
}
}
fun TextView?.appendProportionXSpan(str: String?, proportion: Float): TextView? {
str?.let {
this?.append(it.proportionXSpan(0..it.length, proportion))
}
return this
}
/**
*设置目标文字字体上标
* @return
*/
fun TextView?.superscriptSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.superscriptSpan(range)
this
}
target.isNotNullOrEmpty() -> {
text = src.superscriptSpan(src.range(target!!))
this
}
else -> this
}
}
fun TextView?.appendSuperscriptSpan(str: String?): TextView? {
str?.let {
this?.append(it.superscriptSpan(0..it.length))
}
return this
}
/**
*设置目标文字字体下标
* @return
*/
fun TextView?.subscriptSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.subscriptSpan(range)
this
}
target.isNotNullOrEmpty() -> {
text = src.subscriptSpan(src.range(target!!))
this
}
else -> this
}
}
fun TextView?.appendSubscriptSpan(str: String?): TextView? {
str?.let {
this?.append(it.subscriptSpan(0..it.length))
}
return this
}
/**
*设置目标文字字体
* @return
*/
fun TextView?.fontSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
font: String
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.fontSpan(range, font)
this
}
target.isNotNullOrEmpty() -> {
text = src.fontSpan(src.range(target!!), font)
this
}
else -> this
}
}
fun TextView?.appendFontSpan(str: String?, font: String): TextView? {
str?.let {
this?.append(it.fontSpan(0..it.length, font))
}
return this
}
/**
*设置目标文字字体
* @return
*/
@RequiresApi(Build.VERSION_CODES.P)
fun TextView?.fontSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
font: Typeface
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.fontSpan(range, font)
this
}
target.isNotNullOrEmpty() -> {
text = src.fontSpan(src.range(target!!), font)
this
}
else -> this
}
}
@RequiresApi(Build.VERSION_CODES.P)
fun TextView?.appendFontSpan(str: String?, font: Typeface): TextView? {
str?.let {
this?.append(it.fontSpan(0..it.length, font))
}
return this
}
/**
*设置目标文字对齐方式
* @return
*/
fun TextView?.alignSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
align: Layout.Alignment
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
text = src.alignSpan(range, align)
this
}
target.isNotNullOrEmpty() -> {
text = src.alignSpan(src.range(target!!), align)
this
}
else -> this
}
}
fun TextView?.appendAlignSpan(str: String?, align: Layout.Alignment): TextView? {
str?.let {
this?.append(it.alignSpan(0..it.length, align))
}
return this
}
/**
*设置目标文字超链接
* @return
*/
fun TextView?.urlSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
url: String
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
movementMethod = LinkMovementMethod.getInstance()
text = src.urlSpan(range, url)
this
}
target.isNotNullOrEmpty() -> {
movementMethod = LinkMovementMethod.getInstance()
text = src.urlSpan(src.range(target!!), url)
this
}
else -> this
}
}
fun TextView?.appendUrlSpan(str: String?, url: String): TextView? {
str?.let {
this?.append(it.urlSpan(0..it.length, url))
}
return this
}
/**
*设置目标文字点击
* @return
*/
fun TextView?.clickIntSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
color: Int = Color.RED,
isUnderlineText: Boolean = false,
clickAction: () -> Unit
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
movementMethod = LinkMovementMethod.getInstance()
highlightColor = Color.TRANSPARENT // remove click bg color
text = src.clickSpan(range, color, isUnderlineText, clickAction)
this
}
target.isNotNullOrEmpty() -> {
movementMethod = LinkMovementMethod.getInstance()
highlightColor = Color.TRANSPARENT // remove click bg color
text = src.clickSpan(src.range(target!!), color, isUnderlineText, clickAction)
this
}
else -> this
}
}
fun TextView?.appendClickIntSpan(
str: String?, color: Int = Color.RED,
isUnderlineText: Boolean = false,
clickAction: () -> Unit
): TextView? {
str?.let {
this?.append(it.clickSpan(0..it.length, color, isUnderlineText, clickAction))
}
return this
}
/**
*设置目标文字点击
* @return
*/
fun TextView?.clickSpan(
src: CharSequence? = this?.text,
target: CharSequence? = this?.text,
range: IntRange? = null,
@ColorRes color: Int,
isUnderlineText: Boolean = false,
clickAction: () -> Unit
): TextView? {
return when {
this == null -> this
src.isNullOrEmpty() -> this
target.isNullOrEmpty() && range == null -> this
range != null -> {
movementMethod = LinkMovementMethod.getInstance()
highlightColor = Color.TRANSPARENT // remove click bg color
text = src.clickSpan(range, ResUtils.getColor(color), isUnderlineText, clickAction)
this
}
target.isNotNullOrEmpty() -> {
movementMethod = LinkMovementMethod.getInstance()
highlightColor = Color.TRANSPARENT // remove click bg color
text = src.clickSpan(
src.range(target!!),
ResUtils.getColor(color),
isUnderlineText,
clickAction
)
this
}
else -> this
}
}
fun TextView?.appendClickSpan(
str: String?,
@ColorRes color: Int,
isUnderlineText: Boolean = false,
clickAction: () -> Unit
): TextView? {
str?.let {
this?.append(
it.clickSpan(
0..it.length,
ResUtils.getColor(color),
isUnderlineText,
clickAction
)
)
}
return this
}
里面的ResUtils只是简单的获取资源文件,如果想直接引入,可以参考Github直接使用gradle依赖。