Android(安卓)- AppCompatEditText 重写，实现 3个文字中间使用空格分离
16lz
2021-01-26
重写 AppCompatEditText ，实现 以 3 个文字中间使用空格分离
- 若需要分割符，把空格替换即可
- 若需要多个文字中间分割的话，把对 3 取余 换下即可。
class AppCompatThreeSpaceEditText : AppCompatEditText { var trueText: String = "" private var isRun: Boolean = false private val threeSpaceEdit = this constructor(cxt: Context) : super(cxt) { setOnChangeClick() } constructor(cxt: Context, attributes: AttributeSet) : super(cxt, attributes) { setOnChangeClick() } constructor(cxt: Context, attributes: AttributeSet, defStyleAttr: Int) : super(cxt, attributes, defStyleAttr) { setOnChangeClick() } private fun setOnChangeClick() { threeSpaceEdit.addTextChangedListener(object : TextWatcher { private var changeBeforeLength: Int = 0 override fun afterTextChanged(s: Editable?) { } override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) { if (s == null) { return } changeBeforeLength = s.length } override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) { if (s == null) { return } if (isRun) { isRun = false return } isRun = true val buffer: java.lang.StringBuffer = java.lang.StringBuffer() trueText = s.toString().replace(" ", "") if (changeBeforeLength > s.length) { // 删除内容 buffer.append(s.toString()) } else { // 真实输入文字的长度 val length = trueText.length for (index in 1..length) { buffer.append(trueText[index - 1]) if (index % 3 == 0) { buffer.append(" ") } } } threeSpaceEdit.setText(buffer.toString()) threeSpaceEdit.setSelection(buffer.length) // LogUtil.v("$trueText") } }) }}示例：
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