Android 在画布上垂直绘制文本
我想学习如何在画布上绘制垂直文本。对不起,可能是个愚蠢的问题,但我不能解决这个问题。我可以这样做:Android 在画布上垂直绘制文本,android,rotation,android-canvas,drawtext,Android,Rotation,Android Canvas,Drawtext,我想学习如何在画布上绘制垂直文本。对不起,可能是个愚蠢的问题,但我不能解决这个问题。我可以这样做: if (i ==10) { this_str2 = "0.00"; } canvas.save(); canvas.rotate(-90,190,90); canvas.drawText(this_str2, x_guide +50, drawSizes[1]
if (i ==10)
{
this_str2 = "0.00";
}
canvas.save();
canvas.rotate(-90,190,90);
canvas.drawText(this_str2, x_guide +50, drawSizes[1] + drawSizes[3] - (i * drawSizes[3] / 10) +20, paint);
canvas.restore();
}
但是它没有正确地显示在X和Y上,这个问题的其他解决方案是什么7试试这个自定义文本视图,我不记得我从哪里取的如果从这里(StackOverflow),如果有人记得,请在评论中发布一个链接
import android.content.Context;
import android.graphics.Canvas;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.TextView;
public class VerticalTextView extends TextView
{
final boolean topDown;
public VerticalTextView(Context context, AttributeSet attrs)
{
super(context, attrs);
final int gravity = getGravity();
if (Gravity.isVertical(gravity) && (gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM)
{
setGravity((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = false;
}
else
topDown = true;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
@Override
protected void onDraw(Canvas canvas)
{
TextPaint textPaint = getPaint();
textPaint.setColor(getCurrentTextColor());
textPaint.drawableState = getDrawableState();
canvas.save();
if (topDown)
{
canvas.translate(getWidth(), 0);
canvas.rotate(90);
}
else
{
canvas.translate(0, getHeight());
canvas.rotate(-90);
}
canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());
getLayout().draw(canvas);
canvas.restore();
}
}