android - TextInputEditText - CompoundDrawable 未居中

Question

我试图通过创建一个 TextDrawable 然后使用 compoundDrawable 设置它来为我的 TextInputEditText 添加一个后缀。一切都进行得相当顺利，除了可绘制对象被剪裁到组件右侧之外。是什么原因造成的？到目前为止，我尝试过更改字体大小，但这没有任何区别...是可绘制对象太宽还是什么？

字符串是 "kr/månad"，如您所见，它被剪裁了..

XML

<android.support.design.widget.TextInputLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/text_input_layout"
    style="@style/TextInputLayoutStyle"
    android:theme="@style/TextInputLayoutTheme">

    <android.support.design.widget.TextInputEditText
        android:id="@+id/text_input_edit_text"
        style="@style/TextInputEditTextStyle" />

</android.support.design.widget.TextInputLayout>

组件代码

  textInputEditText.setCompoundDrawables(null, null, TextDrawable(unitText), null)

文本可绘制

class TextDrawable(private val text: String?) : Drawable() {

    private val paint: Paint

    init {
        paint = Paint()
        paint.color = Color.BLACK
        paint.textSize = 44f
        paint.isAntiAlias = true
        paint.isFakeBoldText = true
        paint.typeface = Typeface.create("sans-serif-light", Typeface.NORMAL)
        paint.style = Paint.Style.FILL
        paint.textAlign = Paint.Align.CENTER
    }

    override fun draw(canvas: Canvas) {
        text?.let { text ->
            canvas.drawText(text, 0f, 0f, paint)
        }
    }

    override fun setAlpha(alpha: Int) {
        paint.alpha = alpha
    }

    override fun setColorFilter(cf: ColorFilter?) {
        paint.colorFilter = cf
    }

    override fun getOpacity(): Int {
        return PixelFormat.TRANSLUCENT
    }
}

Answer 1

试试这段代码:

class TextDrawable(private val text: String?) : Drawable() {

    private val paint = Paint().apply {
        color = Color.BLACK
        textSize = 44f
        isAntiAlias = true
        isFakeBoldText = true
        typeface = Typeface.create("sans-serif-light", Typeface.NORMAL)
        style = Paint.Style.FILL
        setBounds(0, 0, measureText(text).toInt(), 0)
    }

    override fun draw(canvas: Canvas) {
        text?.let { text ->
            canvas.drawText(text, 0f, 0f, paint)
        }
    }

    override fun setAlpha(alpha: Int) {
        paint.alpha = alpha
    }

    override fun setColorFilter(cf: ColorFilter?) {
        paint.colorFilter = cf
    }

    override fun getOpacity(): Int {
        return PixelFormat.TRANSLUCENT
    }
}

区别在于两行。我删除了这个

paint.textAlign = Paint.Align.CENTER  

并添加了这个:

setBounds(0, 0, measureText(text).toInt(), 0)