cl19881314/ShowMoreText

ShowMoreText

动态设置TextView的maxLines

设置“展开”文字显示状态

    val layout = desc_tv.layout
    val text = layout.text.toString()

    if (layout.lineCount < DEFAULT_MAX_LINE_COUNT){
        desc_op_tv.visibility = View.GONE
        return
    }
    var start = layout.getLineStart(DEFAULT_MAX_LINE_COUNT - 1)
    val end = layout.getLineEnd(DEFAULT_MAX_LINE_COUNT - 1)
    var res = text.substring(start, end)
    if (desc_tv.text.contains(res)){
        desc_op_tv.visibility = View.GONE
    } else {
        desc_op_tv.visibility = View.VISIBLE
    }