Android实现短信验证码输入框
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2022-06-16 21:29:15
本文实例为大家分享了android实现短信验证码输入框的具体代码,供大家参考,具体内容如下其实用官方自定的那个inputedittext默认带下划线的,然后自己再实行焦点和输入框弹出等操作也可以。写这...
本文实例为大家分享了android实现短信验证码输入框的具体代码,供大家参考,具体内容如下
其实用官方自定的那个inputedittext默认带下划线的,然后自己再实行焦点和输入框弹出等操作也可以。
写这个自定义view主要是为了练习。
/** * 实现了粘贴事件监听回调的 edittext */ open class listenpasteedittexttest : appcompatedittext { constructor(context: context): super(context) constructor(context: context, attributeset: attributeset): super(context,attributeset) constructor(context: context, attributeset: attributeset, defstyleattr: int): super(context, attributeset, defstyleattr) var lisenter: clipinterface ? = null override fun ontextcontextmenuitem(id: int): boolean { when(id) { //剪切复制黏贴 android.r.id.cut -> lisenter?.oncut(); android.r.id.copy -> lisenter?.oncopy(); android.r.id.paste -> lisenter?.onpaste(); } return super.ontextcontextmenuitem(id) } } interface clipinterface{ fun oncut() fun oncopy() fun onpaste() }
/** * 手机验证码输入控件 */ class verificationcodeinputtest(context: context, attributeset: attributeset) : viewgroup(context, attributeset), clipinterface{ private val box = 4 private val boxwidth = 120 private val boxheight = 120 private var childpadding = 14 private val type_number = "number" private val type_text = "text" private val type_password = "password" private val type_phone = "phone" private val boxbgfocus: drawable? = null private val boxbgnormal: drawable? = null private val inputtype = type_number var listener: vercidelistener? = null init { val textwatcher = object : textwatcher{ override fun beforetextchanged(s: charsequence?, start: int, count: int, after: int) { } override fun ontextchanged(s: charsequence?, start: int, before: int, count: int) { } override fun aftertextchanged(s: editable?) { if (s != null) { if (s.isnotempty()) { focus() checkandcommit() } } } } val onkeylistener = onkeylistener { v, keycode, event -> if (keycode == keyevent.keycode_del) { //backfocus(); backfocusclearall() } false } //四个输入框 for (index in 0 until box) { val edittext = listenpasteedittexttest(context) val layoutparams = linearlayout.layoutparams(boxwidth, boxheight) layoutparams.bottommargin = childpadding layoutparams.topmargin = childpadding layoutparams.leftmargin = childpadding layoutparams.rightmargin = childpadding layoutparams.gravity = gravity.center edittext.layoutparams = layoutparams edittext.lisenter = this edittext.setonkeylistener(onkeylistener) //设置背景颜色,就是输入框中的下划线 setbg(edittext, false) edittext.settextcolor(color.black) edittext.gravity = gravity.center //最多给你输入一个字符 edittext.filters = arrayof<inputfilter>(inputfilter.lengthfilter(1)) //设置textview输入内容的显示模式 if (type_password == inputtype) { edittext.transformationmethod = passwordtransformationmethod.getinstance() } else if (type_text == inputtype) { edittext.inputtype = inputtype.type_class_text } else if (type_phone == inputtype) { edittext.inputtype = inputtype.type_class_phone } edittext.id = index //设置字符宽度 edittext.setems(1) edittext.addtextchangedlistener(textwatcher) addview(edittext, index) } } override fun onmeasure(widthmeasurespec: int, heightmeasurespec: int) { var parentwidth = measuredwidth //如果在xml中配置的是match_patent 则直接获取当前手机的width尺寸 if (parentwidth == viewgroup.layoutparams.match_parent) { parentwidth = getscreenwidth() } log.d(javaclass.name, "onmeasure width $parentwidth") val count = childcount for (i in 0 until count) { val child = getchildat(i) this.measurechild(child, widthmeasurespec, heightmeasurespec) } if (count > 0) { val child = getchildat(0) val cwidth = child.measuredwidth if (parentwidth != viewgroup.layoutparams.wrap_content) { // 重新计算padding childpadding = (parentwidth - cwidth * count) / (count + 1) } val cheight = child.measuredheight val maxh = cheight + 2 * childpadding val maxw = cwidth * count + childpadding * (count + 1) //上面都是计算当前edittext的width加上pandding,之后设置给父布局 setmeasureddimension( view.resolvesize(maxw, widthmeasurespec), view.resolvesize(maxh, heightmeasurespec) ) } } override fun onlayout(changed: boolean, l: int, t: int, r: int, b: int) { val childcount = childcount for (i in 0 until childcount) { val child = getchildat(i) child.visibility = view.visible val cwidth = child.measuredwidth val cheight = child.measuredheight val cl = childpadding + i * (cwidth + childpadding) val cr = cl + cwidth val ct = childpadding val cb = ct + cheight child.layout(cl, ct, cr, cb) } } private fun getscreenwidth(): int { val resources = this.resources val dm = resources.displaymetrics return dm.widthpixels } override fun oncut() { } override fun oncopy() { } override fun onpaste() { val copytext = getcutandcopytext() // 如果是数字并且 length 和 填写位数一致才会进行填充 if (isnumeric(copytext) && copytext.length == box) { for (i in 0 until childcount) { (getchildat(i) as edittext).append(copytext.get(i).tostring()) } } } fun setbg(edittext: edittext, focus: boolean) { if (boxbgnormal != null && !focus) { edittext.background = boxbgnormal } else if (boxbgfocus != null && focus) { edittext.background = boxbgfocus } } private fun focus() { val count = childcount var edittext: edittext for (i in 0 until count) { edittext = getchildat(i) as edittext if (edittext.text.isempty()) { edittext.requestfocus() return } } } private fun checkandcommit() { val stringbuilder = stringbuilder() var full = false for (i in 0 until box) { val edittext = getchildat(i) as edittext val content = edittext.text.tostring() if (!content.isempty()) { stringbuilder.append(content) } } if (stringbuilder.length == box) { full = true } if (full) { if (listener != null) { listener?.oncomplete(stringbuilder.tostring()) backfocusclearall() } } } //清空所有并重新输入 fun backfocusclearall() { var edittext: edittext for (i in 0 until box) { edittext = getchildat(i) as edittext edittext.settext("") edittext.clearfocus() } getchildat(0).requestfocus() } /** * 判断是否是数字 * * @param str * @return */ private fun isnumeric(str: string?): boolean { if (str == null || str.isempty()) { return false } for (i in 0 until str.length) { if (!character.isdigit(str[i])) { return false } } return true } /** * 获取剪贴板内容 */ private fun getcutandcopytext(): string { val manager = context.getsystemservice(clipboard_service) as clipboardmanager if (manager != null && manager.hasprimaryclip() && manager.primaryclip!!.itemcount > 0) { val addedtext = manager.primaryclip!!.getitemat(0).text if (addedtext != null) { return addedtext.tostring() } } return "" } } interface vercidelistener { fun oncomplete(content: string) }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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