Android之九宫格解锁的实现
<ignore_js_op>
下面是最重要的那个LocusPassWordView：
/** * * 九宫格解锁 * * @author way * */ public class LocusPassWordView extends View { private float w = 0; private float h = 0; // private boolean isCache = false; // private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); // private Point[][] mPoints = new Point[3][3]; // 圆的半径 private float r = 0; // 选中的点 private List<Point> sPoints = new ArrayList<Point>(); private boolean checking = false; private Bitmap locus_round_original;// 圆点初始状态时的图片 private Bitmap locus_round_click;// 圆点点击时的图片 private Bitmap locus_round_click_error;// 出错时圆点的图片 private Bitmap locus_line;// 正常状态下线的图片 private Bitmap locus_line_semicircle; private Bitmap locus_line_semicircle_error; private Bitmap locus_arrow;// 线的移动方向 private Bitmap locus_line_error;// 错误状态下的线的图片 private long CLEAR_TIME = 0;// 清除痕迹的时间 private int passwordMinLength = 5;// 密码最小长度 private boolean isTouch = true; // 是否可操作 private Matrix mMatrix = new Matrix(); private int lineAlpha = 50;// 连线的透明度 public LocusPassWordView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public LocusPassWordView(Context context, AttributeSet attrs) { super(context, attrs); } public LocusPassWordView(Context context) { super(context); } @Override public void onDraw(Canvas canvas) { if (!isCache) { initCache(); } drawToCanvas(canvas); } private void drawToCanvas(Canvas canvas) { // mPaint.setColor(Color.RED); // Point p1 = mPoints[1][1]; // Rect r1 = new Rect(p1.x - r,p1.y - r,p1.x + // locus_round_click.getWidth() - r,p1.y+locus_round_click.getHeight()- // r); // canvas.drawRect(r1, mPaint); // 画所有点 for (int i = 0; i < mPoints.length; i++) { for (int j = 0; j < mPoints[i].length; j++) { Point p = mPoints[i][j]; if (p.state == Point.STATE_CHECK) { canvas.drawBitmap(locus_round_click, p.x - r, p.y - r, mPaint); } else if (p.state == Point.STATE_CHECK_ERROR) { canvas.drawBitmap(locus_round_click_error, p.x - r, p.y - r, mPaint); } else { canvas.drawBitmap(locus_round_original, p.x - r, p.y - r, mPaint); } } } // mPaint.setColor(Color.BLUE); // canvas.drawLine(r1.left+r1.width()/2, r1.top, r1.left+r1.width()/2, // r1.bottom, mPaint); // canvas.drawLine(r1.left, r1.top+r1.height()/2, r1.right, // r1.bottom-r1.height()/2, mPaint); // 画连线 if (sPoints.size() > 0) { int tmpAlpha = mPaint.getAlpha(); mPaint.setAlpha(lineAlpha); Point tp = sPoints.get(0); for (int i = 1; i < sPoints.size(); i++) { Point p = sPoints.get(i); drawLine(canvas, tp, p); tp = p; } if (this.movingNoPoint) { drawLine(canvas, tp, new Point((int) moveingX, (int) moveingY)); } mPaint.setAlpha(tmpAlpha); lineAlpha = mPaint.getAlpha(); } } /** * 初始化Cache信息 * * @param canvas */ private void initCache() { w = this.getWidth(); h = this.getHeight(); float x = 0; float y = 0; // 以最小的为准 // 纵屏 if (w > h) { x = (w - h) / 2; w = h; } // 横屏 else { y = (h - w) / 2; h = w; } locus_round_original = BitmapFactory.decodeResource( this.getResources(), R.drawable.locus_round_original); locus_round_click = BitmapFactory.decodeResource(this.getResources(), R.drawable.locus_round_click); locus_round_click_error = BitmapFactory.decodeResource( this.getResources(), R.drawable.locus_round_click_error); locus_line = BitmapFactory.decodeResource(this.getResources(), R.drawable.locus_line); locus_line_semicircle = BitmapFactory.decodeResource( this.getResources(), R.drawable.locus_line_semicircle); locus_line_error = BitmapFactory.decodeResource(this.getResources(), R.drawable.locus_line_error); locus_line_semicircle_error = BitmapFactory.decodeResource( this.getResources(), R.drawable.locus_line_semicircle_error); locus_arrow = BitmapFactory.decodeResource(this.getResources(), R.drawable.locus_arrow); // Log.d("Canvas w h :", "w:" + w + " h:" + h); // 计算圆圈图片的大小 float canvasMinW = w; if (w > h) { canvasMinW = h; } float roundMinW = canvasMinW / 8.0f * 2; float roundW = roundMinW / 2.f; // float deviation = canvasMinW % (8 * 2) / 2; x += deviation; x += deviation; if (locus_round_original.getWidth() > roundMinW) { float sf = roundMinW * 1.0f / locus_round_original.getWidth(); // 取得缩放比例，将所有的图片进行缩放 locus_round_original = BitmapUtil.zoom(locus_round_original, sf); locus_round_click = BitmapUtil.zoom(locus_round_click, sf); locus_round_click_error = BitmapUtil.zoom(locus_round_click_error, sf); locus_line = BitmapUtil.zoom(locus_line, sf); locus_line_semicircle = BitmapUtil.zoom(locus_line_semicircle, sf); locus_line_error = BitmapUtil.zoom(locus_line_error, sf); locus_line_semicircle_error = BitmapUtil.zoom( locus_line_semicircle_error, sf); locus_arrow = BitmapUtil.zoom(locus_arrow, sf); roundW = locus_round_original.getWidth() / 2; } mPoints[0][0] = new Point(x + 0 + roundW, y + 0 + roundW); mPoints[0][1] = new Point(x + w / 2, y + 0 + roundW); mPoints[0][2] = new Point(x + w - roundW, y + 0 + roundW); mPoints[1][0] = new Point(x + 0 + roundW, y + h / 2); mPoints[1][1] = new Point(x + w / 2, y + h / 2); mPoints[1][2] = new Point(x + w - roundW, y + h / 2); mPoints[2][0] = new Point(x + 0 + roundW, y + h - roundW); mPoints[2][1] = new Point(x + w / 2, y + h - roundW); mPoints[2][2] = new Point(x + w - roundW, y + h - roundW); int k = 0; for (Point[] ps : mPoints) { for (Point p : ps) { p.index = k; k++; } } r = locus_round_original.getHeight() / 2;// roundW; isCache = true; } /** * 画两点的连接 * * @param canvas * @param a * @param b */ private void drawLine(Canvas canvas, Point a, Point b) { float ah = (float) MathUtil.distance(a.x, a.y, b.x, b.y); float degrees = getDegrees(a, b); // Log.d("=============x===========", "rotate:" + degrees); canvas.rotate(degrees, a.x, a.y); if (a.state == Point.STATE_CHECK_ERROR) { mMatrix.setScale((ah - locus_line_semicircle_error.getWidth()) / locus_line_error.getWidth(), 1); mMatrix.postTranslate(a.x, a.y - locus_line_error.getHeight() / 2.0f); canvas.drawBitmap(locus_line_error, mMatrix, mPaint); canvas.drawBitmap(locus_line_semicircle_error, a.x + locus_line_error.getWidth(), a.y - locus_line_error.getHeight() / 2.0f, mPaint); } else { mMatrix.setScale((ah - locus_line_semicircle.getWidth()) / locus_line.getWidth(), 1); mMatrix.postTranslate(a.x, a.y - locus_line.getHeight() / 2.0f); canvas.drawBitmap(locus_line, mMatrix, mPaint); canvas.drawBitmap(locus_line_semicircle, a.x + ah - locus_line_semicircle.getWidth(), a.y - locus_line.getHeight() / 2.0f, mPaint); } canvas.drawBitmap(locus_arrow, a.x, a.y - locus_arrow.getHeight() / 2.0f, mPaint); canvas.rotate(-degrees, a.x, a.y); } public float getDegrees(Point a, Point b) { float ax = a.x;// a.index % 3; float ay = a.y;// a.index / 3; float bx = b.x;// b.index % 3; float by = b.y;// b.index / 3; float degrees = 0; if (bx == ax) // y轴相等 90度或270 { if (by > ay) // 在y轴的下边 90 { degrees = 90; } else if (by < ay) // 在y轴的上边 270 { degrees = 270; } } else if (by == ay) // y轴相等 0度或180 { if (bx > ax) // 在y轴的下边 90 { degrees = 0; } else if (bx < ax) // 在y轴的上边 270 { degrees = 180; } } else { if (bx > ax) // 在y轴的右边 270~90 { if (by > ay) // 在y轴的下边 0 - 90 { degrees = 0; degrees = degrees + switchDegrees(Math.abs(by - ay), Math.abs(bx - ax)); } else if (by < ay) // 在y轴的上边 270~0 { degrees = 360; degrees = degrees - switchDegrees(Math.abs(by - ay), Math.abs(bx - ax)); } } else if (bx < ax) // 在y轴的左边 90~270 { if (by > ay) // 在y轴的下边 180 ~ 270 { degrees = 90; degrees = degrees + switchDegrees(Math.abs(bx - ax), Math.abs(by - ay)); } else if (by < ay) // 在y轴的上边 90 ~ 180 { degrees = 270; degrees = degrees - switchDegrees(Math.abs(bx - ax), Math.abs(by - ay)); } } } return degrees; } /** * 1=30度 2=45度 4=60度 * * @param tan * @return */ private float switchDegrees(float x, float y) { return (float) MathUtil.pointTotoDegrees(x, y); } /** * 取得数组下标 * * @param index * @return */ public int[] getArrayIndex(int index) { int[] ai = new int[2]; ai[0] = index / 3; ai[1] = index % 3; return ai; } /** * * 检查 * * @param x * @param y * @return */ private Point checkSelectPoint(float x, float y) { for (int i = 0; i < mPoints.length; i++) { for (int j = 0; j < mPoints[i].length; j++) { Point p = mPoints[i][j]; if (RoundUtil.checkInRound(p.x, p.y, r, (int) x, (int) y)) { return p; } } } return null; } /** * 重置 */ private void reset() { for (Point p : sPoints) { p.state = Point.STATE_NORMAL; } sPoints.clear(); this.enableTouch(); } /** * 判断点是否有交叉 返回 0,新点 ,1 与上一点重叠 2,与非最后一点重叠 * * @param p * @return */ private int crossPoint(Point p) { // 重叠的不最后一个则 reset if (sPoints.contains(p)) { if (sPoints.size() > 2) { // 与非最后一点重叠 if (sPoints.get(sPoints.size() - 1).index != p.index) { return 2; } } return 1; // 与最后一点重叠 } else { return 0; // 新点 } } /** * 添加一个点 * * @param point */ private void addPoint(Point point) { this.sPoints.add(point); } /** * 转换为String * * @param points * @return */ private String toPointString() { if (sPoints.size() > passwordMinLength) { StringBuffer sf = new StringBuffer(); for (Point p : sPoints) { sf.append(","); sf.append(p.index); } return sf.deleteCharAt(0).toString(); } else { return ""; } } boolean movingNoPoint = false; float moveingX, moveingY; @Override public boolean onTouchEvent(MotionEvent event) { // 不可操作 if (!isTouch) { return false; } movingNoPoint = false; float ex = event.getX(); float ey = event.getY(); boolean isFinish = false; boolean redraw = false; Point p = null; switch (event.getAction()) { case MotionEvent.ACTION_DOWN: // 点下 // 如果正在清除密码,则取消 if (task != null) { task.cancel(); task = null; Log.d("task", "touch cancel()"); } // 删除之前的点 reset(); p = checkSelectPoint(ex, ey); if (p != null) { checking = true; } break; case MotionEvent.ACTION_MOVE: // 移动 if (checking) { p = checkSelectPoint(ex, ey); if (p == null) { movingNoPoint = true; moveingX = ex; moveingY = ey; } } break; case MotionEvent.ACTION_UP: // 提起 p = checkSelectPoint(ex, ey); checking = false; isFinish = true; break; } if (!isFinish && checking && p != null) { int rk = crossPoint(p); if (rk == 2) // 与非最后一重叠 { // reset(); // checking = false; movingNoPoint = true; moveingX = ex; moveingY = ey; redraw = true; } else if (rk == 0) // 一个新点 { p.state = Point.STATE_CHECK; addPoint(p); redraw = true; } // rk == 1 不处理 } // 是否重画 if (redraw) { } if (isFinish) { if (this.sPoints.size() == 1) { this.reset(); } else if (this.sPoints.size() < passwordMinLength && this.sPoints.size() > 0) { // mCompleteListener.onPasswordTooMin(sPoints.size()); error(); clearPassword(); Toast.makeText(this.getContext(), "密码太短,请重新输入!", Toast.LENGTH_SHORT).show(); } else if (mCompleteListener != null) { if (this.sPoints.size() >= passwordMinLength) { this.disableTouch(); mCompleteListener.onComplete(toPointString()); } } } this.postInvalidate(); return true; } /** * 设置已经选中的为错误 */ private void error() { for (Point p : sPoints) { p.state = Point.STATE_CHECK_ERROR; } } /** * 设置为输入错误 */ public void markError() { markError(CLEAR_TIME); } /** * 设置为输入错误 */ public void markError(final long time) { for (Point p : sPoints) { p.state = Point.STATE_CHECK_ERROR; } this.clearPassword(time); } /** * 设置为可操作 */ public void enableTouch() { isTouch = true; } /** * 设置为不可操作 */ public void disableTouch() { isTouch = false; } private Timer timer = new Timer(); private TimerTask task = null; /** * 清除密码 */ public void clearPassword() { clearPassword(CLEAR_TIME); } /** * 清除密码 */ public void clearPassword(final long time) { if (time > 1) { if (task != null) { task.cancel(); Log.d("task", "clearPassword cancel()"); } lineAlpha = 130; postInvalidate(); task = new TimerTask() { public void run() { reset(); postInvalidate(); } }; Log.d("task", "clearPassword schedule(" + time + ")"); timer.schedule(task, time); } else { reset(); postInvalidate(); } } // private OnCompleteListener mCompleteListener; /** * @param mCompleteListener */ public void setOnCompleteListener(OnCompleteListener mCompleteListener) { this.mCompleteListener = mCompleteListener; } /** * 取得密码 * * @return */ private String getPassword() { SharedPreferences settings = this.getContext().getSharedPreferences( this.getClass().getName(), 0); return settings.getString("password", ""); // , "0,1,2,3,4,5,6,7,8" } /** * 密码是否为空 * * @return */ public boolean isPasswordEmpty() { return StringUtil.isEmpty(getPassword()); } public boolean verifyPassword(String password) { boolean verify = false; if (com.way.util.StringUtil.isNotEmpty(password)) { // 或者是超级密码 if (password.equals(getPassword())) { verify = true; } } return verify; } /** * 设置密码 * * @param password */ public void resetPassWord(String password) { SharedPreferences settings = this.getContext().getSharedPreferences( this.getClass().getName(), 0); Editor editor = settings.edit(); editor.putString("password", password); editor.commit(); } public int getPasswordMinLength() { return passwordMinLength; } public void setPasswordMinLength(int passwordMinLength) { this.passwordMinLength = passwordMinLength; } /** * 轨迹球画完成事件 * * @author way */ public interface OnCompleteListener { /** * 画完了 * * @param str */ public void onComplete(String password); } }
