Android 响应键盘移动图标

package rw.SurFace;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Su易做图ceView;

public class Su易做图ecview01Activity extends Activity {
    /** Called when the activity is first created. */
    DisplayMetrics sMetrics;
     Thread maintThread;
     Mysu易做图ceView view;
     boolean up,down,right,left;
    class Mysu易做图ceView extends Su易做图ceView implements Runnable{
        Bitmap bitmap;

        Paint paint=new Paint();
        long time;
        int Coord_x,Coord_y;
        int x,y;
        public Mysu易做图ceView(Context context) {
            super(context);
            // TODO Auto-generated constructor stub

            setFocusable(true);//可以聚焦
            bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.a);
            paint.setColor(Color.BLUE);
            paint.setTextSize(20);
            x=bitmap.getWidth();
            y=bitmap.getHeight()/2;
            maintThread=new Thread(this);
            maintThread.start();
        }

        @Override
        public void run() {
            // TODO Auto-generated method stub
            while (true) {
                DoDraw();
            }
        }
         void DoDraw()
            {
                Canvas canvas=getHolder().lockCanvas();
                if (canvas!=null) {
                    canvas.drawColor(Color.WHITE);
                    if (up) Coord_y--;
                    if(down) Coord_y++;
                    if(left) Coord_x--;
                    if (right) Coord_x++;
                    canvas.drawBitmap(bitmap, Coord_x*10, Coord_y*10, null);

                    long now=System.currentTimeMillis();
                    canvas.drawText(""+1000/(now-time)+"fps", x, y, paint);
                    time=now;
                    getHolder().unlockCanvasAndPost(canvas);
                }
            }
    }
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        sMetrics=new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(sMetrics);
        /*
         * 获取屏幕大小
         */
        int Met_X=sMetrics.widthPixels;
        int Met_Y=sMetrics.heightPixels;
        Log.i("X--------->", Met_X+"");
        Log.i("Y--------->", Met_Y+"");
        setContentView(new Mysu易做图ceView(this));
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        // TODO Auto-generated method stub
        switch (keyCode) {
        case KeyEvent.KEYCODE_DPAD_UP:

补充：移动开发 , Android ,