Android

Question

我有以下代码将一些文本放在图像的顶部：

    val paint = TextPaint(Paint.ANTI_ALIAS_FLAG)
    paint.color = Color.WHITE
    paint.textSize = 40f //* context.resources.displayMetrics.density
    paint.typeface = Typeface.DEFAULT_BOLD
    //paint.textAlign = Paint.Align.
    paint.setShadowLayer(1f, 0f, 1f, Color.DKGRAY)

    val teststr = "Hello World Hello World Hello World Hello World"

    val canvas = Canvas(bitmap)
    val textLayout = StaticLayout(teststr, paint, canvas.width ,Layout.Alignment.ALIGN_CENTER, 1f, 0f, false)
    textLayout.draw(canvas)

然而，实际上，我希望文字位于图像的底部。我怎样才能将 StaticLayout 与 Bitmap 的底部对齐，使文本出现在图像的底部。

Answer 1

事实证明这是正确答案。 canvas.

的高度减去 StaticLayout 的高度

    val paint = TextPaint(Paint.ANTI_ALIAS_FLAG)
    paint.color = Color.WHITE
    paint.textSize = 40f //* context.resources.displayMetrics.density
    paint.typeface = Typeface.DEFAULT_BOLD
    //paint.textAlign = Paint.Align.
    paint.setShadowLayer(1f, 0f, 1f, Color.DKGRAY)

    val teststr = "Hello World"

    val canvas = Canvas(bitmap)

    val textLayout = StaticLayout(teststr, paint, canvas.width ,Layout.Alignment.ALIGN_CENTER, 1f, 0f, false)
    canvas.save()
    canvas.translate(0f,canvas.height - textLayout.height - 0.0f)
    textLayout.draw(canvas)
    canvas.restore()

Android - 使用静态布局在位图底部绘制文本

Android - Draw Text At The Bottom Of A Bitmap Using Static Layout

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