为EditText添加千位逗号分割

1558004600671_video.gif

<declare-styleable name="StoreCostSetCell">
        <attr name="store_LeftTitle" format="string" />
        <attr name="store_RightMoney" format="string" />
</declare-styleable>

布局文件

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/parentView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:focusableInTouchMode="true"
    android:paddingStart="16dp"
    android:paddingTop="20dp"
    android:paddingEnd="16dp"
    android:paddingBottom="20dp"
    tools:ignore="MissingDefaultResource">

    <TextView
        android:id="@+id/tvTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/colorTextBlack"
        android:textSize="16sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="门店月租金" />

    <EditText
        android:id="@+id/edMoney"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="50dp"
        android:background="@null"
        android:gravity="end"
        android:hint="￥请输入金额"
        android:inputType="number"
        android:textColor="@color/colorPrimary"
        android:textColorHint="#B2B7BE"
        android:textSize="18sp"
        app:layout_constraintBaseline_toBaselineOf="@+id/tvTitle"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/tvTitle" />

    <TextView
        android:id="@+id/tvUnit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="3dp"
        android:text="￥"
        android:textColor="@color/colorPrimary"
        android:textSize="14sp"
        android:visibility="gone"
        app:layout_constraintBaseline_toBaselineOf="@+id/tvTitle"
        app:layout_constraintEnd_toStartOf="@+id/edMoneyGone" />


    <EditText
        android:id="@+id/edMoneyGone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@null"
        android:clickable="false"
        android:focusable="false"
        android:longClickable="false"
        android:textColor="@color/colorPrimary"
        android:textSize="18sp"
        android:visibility="invisible"
        app:layout_constraintBaseline_toBaselineOf="@+id/tvTitle"
        app:layout_constraintEnd_toEndOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

代码实现

/**
 * Created by liuqian on 2019/3/14 19:36
 * Describe:
 */
class StoreCostSetCell @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : ConstraintLayout(context, attrs, defStyleAttr) {

    private val view: View = LayoutInflater.from(context).inflate(R.layout.store_cell_cost_set, this)
    private val tvTitle: TextView
    private val edMoney: EditText
    private val tvUnit: TextView
    private val edMoneyGone: EditText  //不可见的那个edittext  用来控制单位的位置

    init {
        val a = context.obtainStyledAttributes(attrs, R.styleable.StoreCostSetCell)
        val tvLeftContent = a.getString(R.styleable.StoreCostSetCell_store_LeftTitle)
        val tvRightContent = a.getString(R.styleable.StoreCostSetCell_store_RightMoney)
        a.recycle()
        tvTitle = view.findViewById(R.id.tvTitle)
        edMoney = view.findViewById(R.id.edMoney)
        tvUnit = view.findViewById(R.id.tvUnit)
        edMoneyGone = view.findViewById(R.id.edMoneyGone)
        setListener()
        tvTitle.text = tvLeftContent
        edMoney.setText(tvRightContent)
    }

    private fun setEdHint(isShowHintConent: Boolean = true) {
        if (isShowHintConent)
            edMoney.hint = SpannableString("￥请输入金额").apply {
                setSpan( //修改颜色
                        ForegroundColorSpan(Color.parseColor("#B2B7BE")),
                        0,
                        this.length,
                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
                )

                setSpan( //单位的大小
                        RelativeSizeSpan(0.78f),
                        0,
                        1,
                        Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
                )
            }
        else edMoney.hint = ""
    }

    private fun setListener() {
        edMoney.setOnFocusChangeListener { _, hasFocus ->
            if (hasFocus) {
                if (edMoney.length() == 0) {
                    setEdHint(false) //便显示hint
                    tvUnit.visibility = View.VISIBLE
                }
            } else {
                val content = edMoney.text.toString()
                if (content.isNotEmpty()) { //有内容
                    tvUnit.visibility = View.VISIBLE
                } else {
                    setEdHint(true) //显示hint
                    tvUnit.visibility = View.GONE
                }
            }
        }
        edMoney.addTextChangedListener(object : TextWatcher {
            override fun afterTextChanged(s: Editable?) {
            }

            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
            }

            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
                //以下为加入分割逗号  千位分割
                if (!edMoney.hasFocus()) return
                val realString = s.toString().replace(",", "")
                val stringBuild = StringBuilder() //保存变化的数据
                if (realString.length > 3) { //大于 3 才会添加
                    //开始下标
                    var startAddIndex: Int = if (realString.length % 3 == 0) {
                        3
                    } else {
                        realString.length % 3
                    }
                    for (i in 0 until realString.length) {

                        if (startAddIndex == i) {
                            stringBuild.append(",")
                            startAddIndex += 3 //下一个添加逗号的下标
                        }
                        stringBuild.append(realString[i].toString())

                    }

                    if (stringBuild.toString() != s.toString()) {  //别进入死循环
                        edMoney.setText(stringBuild.toString())
                        edMoney.setSelection(edMoney.length())
                        edMoneyGone.text = edMoney.text
                    }
                } else {
                    //此时可能会存在逗号  1,23
                    if (edMoney.text.toString() != realString) {
                        edMoney.setText(realString)
                        edMoney.setSelection(edMoney.length())
                    }
                    edMoneyGone.setText(realString)
                }
            }
        })
    }

    private fun setRightContent(string: String) {
        edMoney.setText(string)
    }

    private fun getMoney(): String {
        return edMoney.text.toString().replace(",", "")
    }
}