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如何在Android中使用textview显示颠倒文本？

在我的情况下,我有一个2人游戏,他们互相玩耍.我想向面向他们的第二个玩家展示测试.

这是我在AaronMs建议之后实施的解决方案

执行覆盖的类bab.foo.UpsideDownText

package bab.foo;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.widget.TextView;

public class UpsideDownText extends TextView {

    //The below two constructors appear to be required
    public UpsideDownText(Context context) {
        super(context);
    }

    public UpsideDownText(Context context, AttributeSet attrs)
    {
        super(context, attrs);
    }

    @Override
    public void onDraw(Canvas canvas) {
        //This saves off the matrix that the canvas applies to draws, so it can be restored later. 
        canvas.save(); 

        //now we change the matrix
        //We need to rotate around the center of …