android自定义View实现手势解锁

package com.example.gesturelock;  import java.util.ArrayList; import java.util.List; import java.util.Timer; import java.util.TimerTask;  import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Path; import android.util.AttributeSet; import android.view.MotionEvent; import android.view.View;  import com.example.gesturelock.GestureLockView.OnGestureFinishListener;  public class MyGestureLockView extends View {    /**    * 不同状态的画笔    */   private Paint paintNormal;   private Paint paintOnTouch;   private Paint paintInnerCycle;   private Paint paintLines;   private Paint paintKeyError;    private MyCycle[] cycles;   private Path linePath = new Path();   private List<Integer> linedCycles = new ArrayList<Integer>();   private OnGestureFinishListener onGestureFinishListener;   private String key;   private int eventX, eventY;   private boolean canContinue = true;   private boolean result;   private Timer timer;    /**    * 不同状态下的色值    */   private int OUT_CYCLE_NORMAL = Color.rgb(108, 119, 138); // ������Բ��ɫ   private int OUT_CYCLE_ONTOUCH = Color.rgb(025, 066, 103); // ѡ����Բ��ɫ   private int INNER_CYCLE_ONTOUCH = Color.rgb(002, 210, 255); // ѡ����Բ��ɫ   private int LINE_COLOR = Color.argb(127, 002, 210, 255); // ��������ɫ   private int ERROR_COLOR = Color.argb(127, 255, 000, 000);    public void setOnGestureFinishListener(       OnGestureFinishListener onGestureFinishListener) {     this.onGestureFinishListener = onGestureFinishListener;   }    public void setKey(String key) {     this.key = key;   }    public MyGestureLockView(Context context, AttributeSet attrs, int defStyle) {     super(context, attrs, defStyle);     init();   }    public MyGestureLockView(Context context, AttributeSet attrs) {     super(context, attrs);     init();   }    public MyGestureLockView(Context context) {     super(context);     init();   }    private void init() {      paintNormal = new Paint();     paintNormal.setAntiAlias(true);     paintNormal.setStrokeWidth(3);     paintNormal.setStyle(Paint.Style.STROKE);      paintOnTouch = new Paint();     paintOnTouch.setAntiAlias(true);     paintOnTouch.setStrokeWidth(3);     paintOnTouch.setStyle(Paint.Style.STROKE);      paintInnerCycle = new Paint();     paintInnerCycle.setAntiAlias(true);     paintInnerCycle.setStyle(Paint.Style.FILL);      paintLines = new Paint();     paintLines.setAntiAlias(true);     paintLines.setStyle(Paint.Style.STROKE);     paintLines.setStrokeWidth(6);      paintKeyError = new Paint();     paintKeyError.setAntiAlias(true);     paintKeyError.setStyle(Paint.Style.STROKE);     paintKeyError.setStrokeWidth(3);    }    @Override   protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {     // TODO Auto-generated method stub     super.onMeasure(widthMeasureSpec, heightMeasureSpec);   }    @Override   protected void onLayout(boolean changed, int left, int top, int right,       int bottom) {     // TODO Auto-generated method stub     super.onLayout(changed, left, top, right, bottom);     int perSize = 0;     if (cycles == null && (perSize = getWidth() / 6) > 0) {        cycles = new MyCycle[9];       for (int i = 0; i < 3; i++) {         for (int j = 0; j < 3; j++) {           MyCycle cycle = new MyCycle();           cycle.setNum(i * 3 + j);           cycle.setOx(perSize * (j * 2 + 1));           cycle.setOy(perSize * (i * 2 + 1));           cycle.setR(perSize * 0.5f);           cycles[i * 3 + j] = cycle;         }       }     }   }    /**    * 绘制所需要绘制的内容    */   @Override   protected void onDraw(Canvas canvas) {     // TODO Auto-generated method stub     super.onDraw(canvas);     for (int i = 0; i < cycles.length; i++) {        if (!canContinue && !result) {         paintOnTouch.setColor(ERROR_COLOR);         paintInnerCycle.setColor(ERROR_COLOR);         paintLines.setColor(ERROR_COLOR);       } else if (cycles[i].isOnTouch()) {         paintOnTouch.setColor(OUT_CYCLE_ONTOUCH);         paintInnerCycle.setColor(INNER_CYCLE_ONTOUCH);         paintLines.setColor(LINE_COLOR);       } else {         paintNormal.setColor(OUT_CYCLE_NORMAL);         paintInnerCycle.setColor(INNER_CYCLE_ONTOUCH);         paintLines.setColor(LINE_COLOR);       }        if (cycles[i].isOnTouch()) {         canvas.drawCircle(cycles[i].getOx(), cycles[i].getOy(),             cycles[i].getR(), paintOnTouch);         drawInnerBuleCycle(cycles[i], canvas);       } else {          canvas.drawCircle(cycles[i].getOx(), cycles[i].getOy(),             cycles[i].getR(), paintNormal);       }     }     drawLine(canvas);   }    /**    * 绘制大圆里的小圆    *    * @param canvas    */   private void drawInnerBuleCycle(MyCycle cycle, Canvas canvas) {     canvas.drawCircle(cycle.getOx(), cycle.getOy(), cycle.getR() / 3,         paintInnerCycle);   }    private void drawLine(Canvas canvas) {     linePath.reset();     if (linedCycles.size() > 0) {       for (int i = 0; i < linedCycles.size(); i++) {         int index = linedCycles.get(i);         if (i == 0) {           // 设置为整条路径的起点           linePath.moveTo(cycles[index].getOx(), cycles[i].getOy());         } else {           linePath.lineTo(cycles[i].getOx(), cycles[i].getOy());         }       }       linePath.lineTo(eventX, eventY);       canvas.drawPath(linePath, paintLines);     }   }    /**    * 根据手择时触摸点的不同,修改对应的状态值    */   @Override   public boolean onTouchEvent(MotionEvent event) {      if (canContinue) {        switch (event.getAction()) {        case MotionEvent.ACTION_DOWN:       case MotionEvent.ACTION_MOVE:         eventX = (int) event.getX();         eventY = (int) event.getY();         for (int i = 0; i < cycles.length; i++) {           if (cycles[i].isPointIn(eventX, eventY)) {             cycles[i].setOnTouch(true);              if (!linedCycles.contains(cycles[i].getNum())) {               linedCycles.add(cycles[i].getNum());             }           }         }         break;       case MotionEvent.ACTION_UP:         canContinue = false;         StringBuffer sb = new StringBuffer();         for (int i = 0; i < linedCycles.size(); i++) {           sb.append(linedCycles.get(i));         }         result = key.equals(sb.toString());         if (onGestureFinishListener != null) {           onGestureFinishListener.OnGestureFinish(result);         }         timer = new Timer();         timer.schedule(new TimerTask() {            @Override           public void run() {             // 回到初始状态             eventX = eventY = 0;             for (int i = 0; i < cycles.length; i++) {               cycles[i].setOnTouch(false);             }             linedCycles.clear();             linePath.reset();             canContinue = true;             postInvalidate();           }         }, 1000);         break;       }     }     invalidate();     return true;   } } 

package com.example.gesturelock;  public class MyCycle {   private int ox;     // Բ�ĺ�����   private int oy;     // Բ��������   private float r;     // �뾶����   private Integer num;   // ������ֵ   private boolean onTouch; // false=δѡ��   public int getOx() {     return ox;   }   public void setOx(int ox) {     this.ox = ox;   }   public int getOy() {     return oy;   }   public void setOy(int oy) {     this.oy = oy;   }   public float getR() {     return r;   }   public void setR(float r) {     this.r = r;   }   public Integer getNum() {     return num;   }   public void setNum(Integer num) {     this.num = num;   }   public boolean isOnTouch() {     return onTouch;   }   public void setOnTouch(boolean onTouch) {     this.onTouch = onTouch;   }   public boolean isPointIn(int x, int y) {     double distance = Math.sqrt((x - ox) * (x - ox) + (y - oy) * (y - oy));     return distance < r;   } }