Question

我通过以下方法将文本转换为位图：

 private Bitmap textToBitmap(String text)
{
    Bitmap myBitmap = Bitmap.createBitmap(400, 50, Bitmap.Config.ARGB_4444);
    Canvas myCanvas = new Canvas(myBitmap);
    Paint paint = new Paint();
    Typeface clock = Typeface.createFromAsset(context.getAssets(),"fonts/myfont.ttf");
    paint.setAntiAlias(true);
    paint.setSubpixelText(true);
    paint.setTypeface(clock);
    paint.setStyle(Paint.Style.FILL);
    paint.setColor(Color.WHITE  );
    paint.setTextSize(38);
    paint.setTextAlign(Paint.Align.RIGHT);
    myCanvas.drawText(text, 400, 30, paint);
    return myBitmap;
}

但是在某些手机中，我的位图很小，而在另一些手机中，我的位图很大为什么会发生？

Answer 1

Bitmap myBitmap = Bitmap.createBitmap(400, 50, Bitmap.Config.ARGB_4444);//its unit is px, practical size of 1 px is different in various device.

您应根据设备scaledDensity调整位图的大小，这里是a good solution

为什么在不同屏幕上位图大小会改变？

1 个答案: