Java 如何在Android中缩放画布

我正在编写一个android游戏，使用Canvas作为绘制一切的方式，问题是当我在不同的android手机上运行它时，画布的大小没有改变，我尝试使用Canvas.scale（），但这并没有产生任何影响。我用于绘图的代码是

public void draw( Canvas c, int score )
{   
    Obstical2[] obstmp = Queue.toArray(this.o);
    Coin[] cointmp = QueueC.toArray(this.c);

    for( int i = 0; i < obstmp.length; i++ )
    {
        obstmp[i].draw(c);
    }

    for( int i = 0; i < cointmp.length; i++ )
    {
        cointmp[i].draw(c);
    }
    c.drawText(String.format("%d", score ), 20, 50, textPaint);

    if( isWon && isStarted ) c.drawText("YOU WON", 20, 400, resPaint);
    else if( isLost && isStarted ) c.drawText("YOU LOST", 20, 400, resPaint);
}

硬币的绘图功能：

public void draw( Canvas c )
{
    obstical.draw(c);
}

如何使画布重新调整大小，使其在任何屏幕上看起来都一样

Cheers Daniel

重写onMeasure（）函数，然后计算屏幕宽度和屏幕高度，然后计算比例

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {     
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        screen_width = MeasureSpec.getSize(widthMeasureSpec);
        screen_height= MeasureSpec.getSize(heightMeasureSpec);
}

---

试试这个，这会改变你的屏幕大小

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    // TODO Auto-generated method stub
      super.onSizeChanged(w, h, oldw, oldh);
      screen_width = w;
      screen_height= h;
}

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    // TODO Auto-generated method stub
      super.onSizeChanged(w, h, oldw, oldh);
      screen_width = w;
      screen_height= h;
}