小程序源码 (触屏手势识别).rar

package com.gp; import java.util.Vector; 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.util.Log; import android.view.GestureDetector; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.GestureDetector.OnGestureListener; import android.view.SurfaceHolder.Callback; import android.view.View.OnTouchListener; /** * * @author Himi * */ public class MySurfaceView extends SurfaceView implements Callback, Runnable, OnGestureListener, OnTouchListener { private SurfaceHolder sfh; private Paint paint; private Thread th; private boolean flag; private Canvas canvas; private int screenW, screenH; //检测手势的类 private GestureDetector gesture; //保存所有添加的icon位图 private Vector<Bitmap> vec = new Vector<Bitmap>(); /** * SurfaceView初始化函数 */ public MySurfaceView(Context context) { super(context); sfh = this.getHolder(); sfh.addCallback(this); paint = new Paint(); paint.setColor(Color.WHITE); paint.setAntiAlias(true); setFocusable(true); //实例GestureDetector gesture = new GestureDetector(this); //为当前视图设置触屏监听器 this.setOnTouchListener(this); } /** * SurfaceView视图创建，响应此函数 */ @Override public void surfaceCreated(SurfaceHolder holder) { screenW = this.getWidth(); screenH = this.getHeight(); flag = true; //实例线程 th = new Thread(this); //启动线程 th.start(); } /** * 游戏绘图 */ public void myDraw() { try { canvas = sfh.lockCanvas(); if (canvas != null) { canvas.drawColor(Color.BLACK); for (int i = 0; i < vec.size(); i++) { canvas.drawBitmap(vec.elementAt(i), i * 5, 50, paint); } } } catch (Exception e) { // TODO: handle exception } finally { if (canvas != null) sfh.unlockCanvasAndPost(canvas); } } /** * 触屏事件监听 */ @Override public boolean onTouchEvent(MotionEvent event) { return true; } /** * 按键事件监听 */ @Override public boolean onKeyDown(int keyCode, KeyEvent event) { return super.onKeyDown(keyCode, event); } /** * 游戏逻辑 */ private void logic() { } @Override public void run() { while (flag) { long start = System.currentTimeMillis(); myDraw(); logic(); long end = System.currentTimeMillis(); try { if (end - start < 50) { Thread.sleep(50 - (end - start)); } } catch (InterruptedException e) { e.printStackTrace(); } } } /** * SurfaceView视图状态发生改变，响应此函数 */ @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } /** * SurfaceView视图消亡时，响应此函数 */ @Override public void surfaceDestroyed(SurfaceHolder holder) { flag = false; } @Override public boolean onTouch(View v, MotionEvent event) { return gesture.onTouchEvent(event); } //按下 @Override public boolean onDown(MotionEvent e) { Log.e("", "onDown"); return false; } // 短暂按下抬起 @Override public boolean onSingleTapUp(MotionEvent e) { Log.e("", "onSingleTapUp"); return false; } // 先短暂按下 、然后滑动、最后 抬起 @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { Log.e("", "onFling"); //往图片容器里添加一个新的icon位图 vec.add(BitmapFactory.decodeResource(this.getResources(), R.drawable.icon)); return false; } // 先短暂按下 、然后滑动 @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { Log.e("", "onScroll" + distanceX + "---" + distanceY); return false; } // 先短暂按下 、短按不滑动 @Override public void onShowPress(MotionEvent e) { Log.e("", "onShowPress"); } // 长按不滑动 @Override public void onLongPress(MotionEvent e) { Log.e("", "onLongPress"); } }