java - 绘图不显示

Question

为什么mImage不显示？

public class Manager extends Thread{
    private SurfaceHolder mSurfaceHolder;
    private boolean mRunning;



public Drawable mImage;
public Manager(SurfaceHolder surfaceHolder, Context context){

     mSurfaceHolder = surfaceHolder;
     mRunning = false;

     Resources res = context.getResources();


         mImage = res.getDrawable(R.drawable.nhero2);


  public void setRunning(boolean running)
   {
       mRunning = running;
   }

   public void run()
   {
       while (mRunning)
       {
           Canvas canvas = null;
           try
           {
               // подготовка Canvas-а
               canvas = mSurfaceHolder.lockCanvas();
               synchronized (mSurfaceHolder)
               {
                   // собственно рисование
                   //doDraw(canvas);
                   mImage.draw(canvas);
               }
           }
           catch (Exception e) { }
           finally
           {
               if (canvas != null)
               {
                   mSurfaceHolder.unlockCanvasAndPost(canvas);
               }
           }
       }
   }
}

附注抱歉 4 我的英语

P.P.S。我正在尝试创建我自己的 scrool 射击游戏 哈哈完整代码在这里(抱歉有不好的评论)类主任http://pastebin.com/Sjd57uqT类 View 和类 s​​crollBckgr http://pastebin.com/A5u5UJea

Answer 1

需要调用mImage.setBounds(...);否则 Canvas 不知道在哪里绘制Drawable。