我在考虑Instagram评论卡的布局。布局范围如下所示,
在紫色块中,两个TextView对齐为一个,两个都可以单击为单独的。一个导航到用户页面,另一个选择评论卡。这怎么可能?我只能将其视为具有两个textviews的LinearLayout / RelativeLayout,我们如何使其外观和行为类似?
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="60dp"
android:layout_marginBottom="20dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="\@someusername"
android:id="@+id/comment_username"
android:layout_marginLeft="15dp"
android:textSize="18sp"
android:textStyle="bold"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. "
android:layout_marginLeft="5dp"
android:textSize="18sp"
android:layout_toRightOf="@+id/comment_username"
android:id="@+id/comment"/>
</RelativeLayout>
如下图所示,
Instagram如何使布局看起来如上图所示?
它使用SpannableString
设置SpannableString
的样式。您可以这样:
TextView
尝试使用跨度来设置文本样式。
阅读更多:val username = "@username"
val comment = "This is a comment"
val text = username + comment
val startName = text.indexOf(username)
val endName = startName + username.length
val startComment = text.indexOf(comment)
val endComment = text.length
val spannableString = SpannableString(text)
val nameClickableSpan = object : ClickableSpan() {
override fun onClick(widget: View) {
// Username clicked
}
override fun updateDrawState(ds: TextPaint) {
super.updateDrawState(ds)
ds.typeface = Typeface.DEFAULT_BOLD
ds.isUnderlineText = false
}
}
val commentClickableSpan = object : ClickableSpan() {
override fun onClick(widget: View) {
// Comment clicked
}
override fun updateDrawState(ds: TextPaint) {
super.updateDrawState(ds)
ds.isUnderlineText = false
}
}
spannableString.setSpan(nameClickableSpan, startName, endName, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
spannableString.setSpan(commentClickableSpan, startComment, endComment, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
textView.text = spannableString
textView.movementMethod = LinkMovementMethod.getInstance()