diff --git a/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/LockPatternView.java b/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/LockPatternView.java
new file mode 100644
index 0000000..e0524ad
--- /dev/null
+++ b/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/LockPatternView.java
@@ -0,0 +1,399 @@
+package com.example.administrator.myapplication.widget.patternlock;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.support.design.widget.Snackbar;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.Display;
+import android.view.MotionEvent;
+import android.view.View;
+
+import com.example.administrator.myapplication.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class LockPatternView extends View {
+    //判断线的状态
+    private  boolean isLineState = true;
+    //判断点是否被实例化了
+    private  boolean isInitPoint = false;//不能被定义为static，否则很可能导致mPoints内存泄漏
+    //判断手指是否离开屏幕
+    private  boolean isFinish = false;
+    //判断手指点击屏幕时是否选中了九宫格中的点
+    private  boolean isSelect = false;
+    // 创建MyPoint的数组
+    private Point[][] mPoints;
+    // 声明屏幕的宽和高
+    private int mScreenHeight;
+    private int mScreenWidth;
+    // 声明点线的图片的半径
+    private float mPointRadius;
+    // 声明线的图片的高（即是半径）
+    private float mLineHeight;
+    // 声明鼠标移动的x，y坐标
+    private float mMoveX, mMoveY;
+    // 声明屏幕上的宽和高的偏移量
+    private int mScreenHeightOffSet = 0;
+    private int mScreenWidthOffSet = 0;
+    // 创建一个画笔
+    private Paint mPaint;
+    // 声明资源图片
+    private Bitmap mBitmapNormal;
+    private Bitmap mBitmapPressed;
+    private Bitmap mBitmapError;
+    private Bitmap mLinePressed;
+    private Bitmap mLineError;
+    // 创建一个矩阵
+    private Matrix mMatrix = new Matrix();
+    // 创建MyPoint的列表
+    private List<Point> mPointList = new ArrayList<Point>();
+    // 实例化鼠标点
+    private Point mMousePoint = new Point();
+    // 用获取从activity中传过来的密码字符串
+    private String mPassword = "";
+
+    private Context mContext;
+    private OnLockListener mListener;
+    private Activity activity;
+
+    public LockPatternView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        mContext = context;
+        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        mPoints = new Point[3][3];
+    }
+
+    public LockPatternView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        mPoints = new Point[3][3];
+    }
+
+    public LockPatternView(Context context) {
+        super(context);
+        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        mPoints = new Point[3][3];
+    }
+
+    /**
+     * 画点和画线
+     */
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+        if (!isInitPoint) {
+            initPoint(); // 先初始化
+        }
+        canvasPoint(canvas); // 开始画点
+
+        // 开始画线
+        if (mPointList.size() > 0) {
+            Point b = null;
+            Point a = mPointList.get(0);
+            for (int i = 1; i < mPointList.size(); i++) {
+                b = mPointList.get(i);
+                canvasLine(a, b, canvas);
+                a = b;
+            }
+            if (!isFinish) {
+                canvasLine(a, mMousePoint, canvas);
+            }
+        }
+        if(isFinish)
+        {
+
+            try {
+                Thread.sleep(700);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            changePointToNormal();
+            postInvalidate();
+        }
+    }
+
+
+    /**
+     * @author htq
+     */
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+       //
+        Display d=activity.getWindowManager().getDefaultDisplay();
+        setMeasuredDimension(d.getWidth(),d.getWidth());
+    }
+
+
+    /**
+     * 手指点击手机屏幕
+     */
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        mMoveX = event.getX();
+        mMoveY = event.getY();
+        // 设置移动点的坐标
+        mMousePoint.setX(mMoveX);
+        mMousePoint.setY(mMoveY);
+        Point mPoint = null;
+        switch (event.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                isLineState = true;
+                isFinish = false;
+//                // 每次点击时就会将pointList中元素设置转化成普通状态
+//                for (int i = 0; i < mPointList.size(); i++) {
+//                    mPointList.get(i).setState(Point.BITMAP_NORMAL);
+//                }
+//                // 将pointList中的元素清除掉
+//                mPointList.clear();
+                changePointToNormal();
+                // 判断是否点中了九宫格中的点
+                mPoint = getIsSelectedPoint(mMoveX, mMoveY);
+                if (mPoint != null) {
+                    isSelect = true;
+                }
+                break;
+            case MotionEvent.ACTION_MOVE:
+                if (isSelect == true) {
+                    mPoint = getIsSelectedPoint(mMoveX, mMoveY);
+                }
+
+                break;
+            case MotionEvent.ACTION_UP:
+                isFinish = true;
+                isSelect = false;
+                // 规定至少要有4个点被连线才有可能是正确
+                // 其他种情况都是错误的
+                if (mPointList.size() >= 4) {// 正确情况
+                    for (int j = 0; j < mPointList.size(); j++) {
+                        mPassword += mPointList.get(j).getIndex();
+                    }
+                    Log.i("password",mPassword);
+                    //将连线后得到的密码传给activity
+                    mListener.getStringPassword(mPassword);
+                    mPassword = "";
+                    //经过activity判断传过来是否正确
+                    if (mListener.isPassword()) {
+                        for (int i = 0; i < mPointList.size(); i++) {
+                            mPointList.get(i).setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_PRESS);
+
+                        }
+                        isLineState = true;
+                    } else {
+                        for (int i = 0; i < mPointList.size(); i++) {
+                            mPointList.get(i).setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_ERROR);
+
+                        }
+                        Log.i("correct","is not correct");
+                        isLineState = false;
+                    }
+                    // 错误情况
+                } else if (mPointList.size() < 4 && mPointList.size() > 1) {
+                    for (int i = 0; i < mPointList.size(); i++) {
+                        mPointList.get(i).setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_ERROR);
+                        Snackbar.make(this,"为了您的App安全，手势至少得包含4个点",Snackbar.LENGTH_LONG).show();
+                    }
+                    isLineState = false;
+                    // 如果只有一个点被点中时为普通情况
+                } else if (mPointList.size() == 1) {
+                    for (int i = 0; i < mPointList.size(); i++) {
+                        mPointList.get(i).setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_NORMAL);
+                    }
+                }
+                break;
+
+        }
+        // 将mPoint添加到pointList中
+        if (isSelect && mPoint != null) {
+            if (mPoint.getState() == com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_NORMAL) {
+                mPoint.setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_PRESS);
+                mPointList.add(mPoint);
+            }
+        }
+//        Log.i("draw","draw -----");
+        // 每次发生OnTouchEvent()后都刷新View
+        postInvalidate();
+        return true;
+    }
+
+    /**
+     * @author htq
+     */
+    private void changePointToNormal()
+    {
+        // 每次点击时就会将pointList中元素设置转化成普通状态
+        for (int i = 0; i < mPointList.size(); i++) {
+            mPointList.get(i).setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_NORMAL);
+        }
+        // 将pointList中的元素清除掉
+        mPointList.clear();
+    }
+
+    /**
+     * 判断九宫格中的某个点是否被点中了，或者某个点能否被连线
+     *
+     * @param moveX
+     * @param moveY
+     * @return
+     */
+    private Point getIsSelectedPoint(float moveX, float moveY) {
+        Point myPoint = null;
+        for (int i = 0; i < mPoints.length; i++) {
+            for (int j = 0; j < mPoints[i].length; j++) {
+                if (mPoints[i][j].isWith(mPoints[i][j], moveX, moveY,
+                        mPointRadius)) {
+                    myPoint = mPoints[i][j];
+                }
+            }
+        }
+
+        return myPoint;
+    }
+
+    /**
+     * 画线
+     *
+     * @param a      起始点
+     * @param b      目的点
+     * @param canvas 画布
+     */
+    private void canvasLine(Point a, Point b, Canvas canvas) {
+        // Math.sqrt(平方+平方)
+        float abInstance = (float) Math.sqrt(
+                (a.getX() - b.getX()) * (a.getX() - b.getX())
+                        + (a.getY() - b.getY()) * (a.getY() - b.getY())
+        );
+        canvas.rotate(com.example.administrator.myapplication.widget.patternlock.RotateDegrees.getDegrees(a, b), a.getX(), a.getY());
+
+        mMatrix.setScale(abInstance / mLineHeight, 1);
+        mMatrix.postTranslate(a.getX(), a.getY());
+        if (isLineState) {
+            canvas.drawBitmap(mLinePressed, mMatrix, mPaint);
+        } else {
+            canvas.drawBitmap(mLineError, mMatrix, mPaint);
+        }
+
+        canvas.rotate(-com.example.administrator.myapplication.widget.patternlock.RotateDegrees.getDegrees(a, b), a.getX(), a.getY());
+    }
+
+    /**
+     * 画点
+     *
+     * @param canvas
+     */
+    private void canvasPoint(Canvas canvas) {
+
+        for (int i = 0; i < mPoints.length; i++) {
+            for (int j = 0; j < mPoints[i].length; j++) {
+                if (mPoints[i][j].getState() == com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_NORMAL) {
+                    canvas.drawBitmap(mBitmapNormal,
+                            mPoints[i][j].getX() - mPointRadius,
+                            mPoints[i][j].getY() - mPointRadius, mPaint);
+                } else if (mPoints[i][j].getState() == com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_PRESS) {
+                    canvas.drawBitmap(mBitmapPressed,
+                            mPoints[i][j].getX() - mPointRadius,
+                            mPoints[i][j].getY() - mPointRadius, mPaint);
+                } else {
+                    canvas.drawBitmap(mBitmapError,
+                            mPoints[i][j].getX() - mPointRadius,
+                            mPoints[i][j].getY() - mPointRadius, mPaint);
+                }
+            }
+        }
+    }
+
+    /**
+     * 实例化九宫格中所有点和所有的资源图片
+     */
+    private void initPoint() {
+        // 获取View的宽高
+        mScreenWidth = getWidth();
+        mScreenHeight = getHeight();
+        if (mScreenHeight > mScreenWidth) {
+            // 获取y轴上的偏移量
+            mScreenHeightOffSet = (mScreenHeight - mScreenWidth) / 2;
+            // 将屏幕高的变量设置成与宽相等，目的是为了new Point(x,y)时方便操作
+            mScreenHeight = mScreenWidth;
+        } else {
+            // 获取x轴上的偏移量
+            mScreenWidthOffSet = (mScreenWidth - mScreenHeight) / 2;
+            // 将屏幕宽的变量设置成与高相等，目的是为了new Point(x,y)时方便操作
+            mScreenWidth = mScreenHeight;
+        }
+
+        /**
+         * 实例化所有的资源图片
+         */
+        mBitmapError = BitmapFactory.decodeResource(getResources(), R.drawable.bitmap_error);
+        mBitmapNormal = BitmapFactory.decodeResource(getResources(), R.drawable.bitmap_normal);
+        mBitmapPressed = BitmapFactory.decodeResource(getResources(), R.drawable.bitmap_pressed);
+        mLineError = BitmapFactory.decodeResource(getResources(), R.drawable.line_error);
+        mLinePressed = BitmapFactory.decodeResource(getResources(), R.drawable.line_pressed);
+
+        mPointRadius = mBitmapNormal.getWidth() / 2;
+        mLineHeight = mLinePressed.getHeight();
+
+        /**
+         * 开始实例化九宫格中点
+         */
+        mPoints[0][0] = new Point(mScreenWidthOffSet + mScreenWidth / 4,
+                mScreenHeightOffSet + mScreenHeight / 4);
+        mPoints[0][1] = new Point(mScreenWidthOffSet + mScreenWidth / 2,
+                mScreenHeightOffSet + mScreenHeight / 4);
+        mPoints[0][2] = new Point(mScreenWidthOffSet + mScreenWidth * 3 / 4,
+                mScreenHeightOffSet + mScreenHeight / 4);
+
+        mPoints[1][0] = new Point(mScreenWidthOffSet + mScreenWidth / 4,
+                mScreenHeightOffSet + mScreenHeight / 2);
+        mPoints[1][1] = new Point(mScreenWidthOffSet + mScreenWidth / 2,
+                mScreenHeightOffSet + mScreenHeight / 2);
+        mPoints[1][2] = new Point(mScreenWidthOffSet + mScreenWidth * 3 / 4,
+                mScreenHeightOffSet + mScreenHeight / 2);
+
+        mPoints[2][0] = new Point(mScreenWidthOffSet + mScreenWidth / 4,
+                mScreenHeightOffSet + mScreenHeight * 3 / 4);
+        mPoints[2][1] = new Point(mScreenWidthOffSet + mScreenWidth / 2,
+                mScreenHeightOffSet + mScreenHeight * 3 / 4);
+        mPoints[2][2] = new Point(mScreenWidthOffSet + mScreenWidth * 3 / 4,
+                mScreenHeightOffSet + mScreenHeight * 3 / 4);
+
+
+        // 设置九宫格中的各个index
+        int index = 1;
+        for (int i = 0; i < mPoints.length; i++) {
+            for (int j = 0; j < mPoints[i].length; j++) {
+                mPoints[i][j].setIndex(index + "");
+                // 在没有任何操作的情况下默認点的状态
+                mPoints[i][j].setState(com.example.administrator.myapplication.widget.patternlock.Point.BITMAP_NORMAL);
+                index++;
+            }
+        }
+
+        // 将isInitPoint设置为true
+        isInitPoint = true;
+    }
+
+    public interface OnLockListener {
+        public void getStringPassword(String password);
+
+
+  //      public void setErrorMsg(String msg);
+   //     public void setSuccessMsg(String msg);
+        public boolean isPassword();
+    }
+
+
+    public void setLockListener(OnLockListener listener) {
+        this.mListener = listener;
+    }
+   public void setActivityContext(Activity aty){this.activity=aty;}
+}
diff --git a/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/Point.java b/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/Point.java
new file mode 100644
index 0000000..ecd4d35
--- /dev/null
+++ b/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/Point.java
@@ -0,0 +1,76 @@
+package com.example.administrator.myapplication.widget.patternlock;
+
+public class Point {
+    public static int BITMAP_NORMAL = 0; // 正常
+    public static int BITMAP_ERROR = 1;  // 错误
+    public static int BITMAP_PRESS = 2;  // 按下
+
+    //九宫格中的点的下标（即每个点代表一个值）
+    private String index;
+    //点的状态
+    private int state;
+    //点的坐标
+    private float x;
+    private float y;
+
+    public Point() {
+        super();
+    }
+
+    public Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    public String getIndex() {
+        return index;
+    }
+
+    public int getState() {
+        return state;
+    }
+
+    public float getX() {
+        return x;
+    }
+
+    public float getY() {
+        return y;
+    }
+
+    public void setIndex(String index) {
+        this.index = index;
+    }
+
+    public void setState(int state) {
+        this.state = state;
+    }
+
+    public void setX(float x) {
+        this.x = x;
+    }
+
+    public void setY(float y) {
+        this.y = y;
+    }
+
+    /**
+     * 判断屏幕上的九宫格中的点能否可以进行连线
+     *
+     * @param a
+     * @param moveX
+     * @param moveY
+     * @param radius 点bitmap的半径
+     * @return 布尔型
+     */
+    public boolean isWith(Point a, float moveX, float moveY, float radius) {
+        float result = (float) Math.sqrt((a.getX() - moveX)
+                * (a.getX() - moveX) + (a.getY() - moveY)
+                * (a.getY() - moveY));
+        if (result < 5 * radius / 4) {
+            return true;
+        }
+        return false;
+    }
+
+}
diff --git a/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/RotateDegrees.java b/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/RotateDegrees.java
new file mode 100644
index 0000000..ea087b2
--- /dev/null
+++ b/src/MyApplication/app/src/main/java/com/example/administrator/myapplication/widget/patternlock/RotateDegrees.java
@@ -0,0 +1,42 @@
+package com.example.administrator.myapplication.widget.patternlock;
+
+public class RotateDegrees {
+
+    public static float getDegrees(Point a, Point b) {
+        float degrees = 0;
+        float ax = a.getX();
+        float ay = a.getY();
+        float bx = b.getX();
+        float by = b.getY();
+
+        if (ax == bx) {
+            if (by > ay) {
+                degrees = 90;
+            } else {
+                degrees = 270;
+            }
+        } else if (by == ay) {
+            if (ax > bx) {
+                degrees = 180;
+            } else {
+                degrees = 0;
+            }
+        } else {
+            if (ax > bx) {
+                if (ay > by) { // 第三象限
+                    degrees = 180 + (float) (Math.atan2(ay - by, ax - bx) * 180 / Math.PI);
+                } else { // 第二象限
+                    degrees = 180 - (float) (Math.atan2(by - ay, ax - bx) * 180 / Math.PI);
+                }
+            } else {
+                if (ay > by) { // 第四象限
+                    degrees = 360 - (float) (Math.atan2(ay - by, bx - ax) * 180 / Math.PI);
+                } else { // 第一象限
+                    degrees = (float) (Math.atan2(by - ay, bx - ax) * 180 / Math.PI);
+                }
+            }
+        }
+        return degrees;
+    }
+
+}