Android手势锁实现

最终效果如下

整体思路

a、自定义了一个RelativeLayout(GestureLockViewGroup)在里面会根据传入的每行的个数，生成多个GestureLockView（就是上面一个个小圈圈），然后会自动进行布局，里面的宽度，间距，内圆的直径，箭头的大小神马的都是百分比实现的，所以大胆的设置你喜欢的个数，只要你没有密集恐惧症~

b、GestureLockView有三个状态，没有手指触碰、手指触碰、和手指抬起，会根据这三个状态绘制不同的效果，以及抬起时的小箭头需要旋转的角度，会根据用户选择的GestureLockView，进行计算，在GestureLockViewGroup为每个GestureLockView设置

c、GestureLockViewGroup主要就是判断用户ACTION_MOVE，ACTION_DOWN ， ACTION_UP时改变选中的GestureLockView的状态，并且记录下来，提供一定的回调。

自定义属性

<?xml version="1.0" encoding="utf-8"?>
<resources><attr name="color_no_finger_inner_circle" format="color" /><attr name="color_no_finger_outer_circle" format="color" /><attr name="color_finger_on" format="color" /><attr name="color_finger_up" format="color" /><attr name="count" format="integer" /><attr name="tryTimes" format="integer" /><declare-styleable name="GestureLockViewGroup"><attr name="color_no_finger_inner_circle" /><attr name="color_no_finger_outer_circle" /><attr name="color_finger_on" /><attr name="color_finger_up" /><attr name="count" /><attr name="tryTimes" /></declare-styleable></resources>

GestureLockView

package com.zhy.zhy_gesturelockview.view;import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.Path;
import android.view.View;public class GestureLockView extends View
{private static final String TAG = "GestureLockView";/*** GestureLockView的三种状态*/enum Mode{STATUS_NO_FINGER, STATUS_FINGER_ON, STATUS_FINGER_UP;}/*** GestureLockView的当前状态*/private Mode mCurrentStatus = Mode.STATUS_NO_FINGER;/*** 宽度*/private int mWidth;/*** 高度*/private int mHeight;/*** 外圆半径*/private int mRadius;/*** 画笔的宽度*/private int mStrokeWidth = 2;/*** 圆心坐标*/private int mCenterX;private int mCenterY;private Paint mPaint;/*** 箭头（小三角最长边的一半长度 = mArrawRate * mWidth / 2 ）*/private float mArrowRate = 0.333f;private int mArrowDegree = -1;private Path mArrowPath;/*** 内圆的半径 = mInnerCircleRadiusRate * mRadus* */private float mInnerCircleRadiusRate = 0.3F;/*** 四个颜色，可由用户自定义，初始化时由GestureLockViewGroup传入*/private int mColorNoFingerInner;private int mColorNoFingerOutter;private int mColorFingerOn;private int mColorFingerUp;public GestureLockView(Context context , int colorNoFingerInner , int colorNoFingerOutter , int colorFingerOn , int colorFingerUp ){super(context);this.mColorNoFingerInner = colorNoFingerInner;this.mColorNoFingerOutter = colorNoFingerOutter;this.mColorFingerOn = colorFingerOn;this.mColorFingerUp = colorFingerUp;mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);mArrowPath = new Path();}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){super.onMeasure(widthMeasureSpec, heightMeasureSpec);mWidth = MeasureSpec.getSize(widthMeasureSpec);mHeight = MeasureSpec.getSize(heightMeasureSpec);// 取长和宽中的小值mWidth = mWidth < mHeight ? mWidth : mHeight;mRadius = mCenterX = mCenterY = mWidth / 2;mRadius -= mStrokeWidth / 2;// 绘制三角形，初始时是个默认箭头朝上的一个等腰三角形，用户绘制结束后，根据由两个GestureLockView决定需要旋转多少度float mArrowLength = mWidth / 2 * mArrowRate;mArrowPath.moveTo(mWidth / 2, mStrokeWidth + 2);mArrowPath.lineTo(mWidth / 2 - mArrowLength, mStrokeWidth + 2+ mArrowLength);mArrowPath.lineTo(mWidth / 2 + mArrowLength, mStrokeWidth + 2+ mArrowLength);mArrowPath.close();mArrowPath.setFillType(Path.FillType.WINDING);}@Overrideprotected void onDraw(Canvas canvas){switch (mCurrentStatus){case STATUS_FINGER_ON:// 绘制外圆mPaint.setStyle(Style.STROKE);mPaint.setColor(mColorFingerOn);mPaint.setStrokeWidth(2);canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);// 绘制内圆mPaint.setStyle(Style.FILL);canvas.drawCircle(mCenterX, mCenterY, mRadius* mInnerCircleRadiusRate, mPaint);break;case STATUS_FINGER_UP:// 绘制外圆mPaint.setColor(mColorFingerUp);mPaint.setStyle(Style.STROKE);mPaint.setStrokeWidth(2);canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);// 绘制内圆mPaint.setStyle(Style.FILL);canvas.drawCircle(mCenterX, mCenterY, mRadius* mInnerCircleRadiusRate, mPaint);drawArrow(canvas);break;case STATUS_NO_FINGER:// 绘制外圆mPaint.setStyle(Style.FILL);mPaint.setColor(mColorNoFingerOutter);canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);// 绘制内圆mPaint.setColor(mColorNoFingerInner);canvas.drawCircle(mCenterX, mCenterY, mRadius* mInnerCircleRadiusRate, mPaint);break;}}/*** 绘制箭头* @param canvas*/private void drawArrow(Canvas canvas){if (mArrowDegree != -1){mPaint.setStyle(Paint.Style.FILL);canvas.save();canvas.rotate(mArrowDegree, mCenterX, mCenterY);canvas.drawPath(mArrowPath, mPaint);canvas.restore();}}/*** 设置当前模式并重绘界面* * @param mode*/public void setMode(Mode mode){this.mCurrentStatus = mode;invalidate();}public void setArrowDegree(int degree){this.mArrowDegree = degree;}public int getArrowDegree(){return this.mArrowDegree;}
}

GestureLockViewGroup

package com.zhy.zhy_gesturelockview.view;import java.util.ArrayList;
import java.util.List;import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.RelativeLayout;import com.zhy.zhy_gesturelockview.R;
import com.zhy.zhy_gesturelockview.view.GestureLockView.Mode;/*** 整体包含n*n个GestureLockView,每个GestureLockView间间隔mMarginBetweenLockView，* 最外层的GestureLockView与容器存在mMarginBetweenLockView的外边距* * 关于GestureLockView的边长（n*n）： n * mGestureLockViewWidth + ( n + 1 ) ** mMarginBetweenLockView = mWidth ; 得：mGestureLockViewWidth = 4 * mWidth / ( 5* * mCount + 1 ) 注：mMarginBetweenLockView = mGestureLockViewWidth * 0.25 ;* * @author zhy* */
public class GestureLockViewGroup extends RelativeLayout
{private static final String TAG = "GestureLockViewGroup";/*** 保存所有的GestureLockView*/private GestureLockView[] mGestureLockViews;/*** 每个边上的GestureLockView的个数*/private int mCount = 3;/*** 存储答案*/private int[] mAnswer = { 0, 1, 2, 5, 8 };/*** 保存用户选中的GestureLockView的id*/private List<Integer> mChoose = new ArrayList<Integer>();private Paint mPaint;/*** 每个GestureLockView中间的间距 设置为：mGestureLockViewWidth * 25%*/private int mMarginBetweenLockView = 30;/*** GestureLockView的边长 4 * mWidth / ( 5 * mCount + 1 )*/private int mGestureLockViewWidth;/*** GestureLockView无手指触摸的状态下内圆的颜色*/private int mNoFingerInnerCircleColor = 0xFF939090;/*** GestureLockView无手指触摸的状态下外圆的颜色*/private int mNoFingerOuterCircleColor = 0xFFE0DBDB;/*** GestureLockView手指触摸的状态下内圆和外圆的颜色*/private int mFingerOnColor = 0xFF378FC9;/*** GestureLockView手指抬起的状态下内圆和外圆的颜色*/private int mFingerUpColor = 0xFFFF0000;/*** 宽度*/private int mWidth;/*** 高度*/private int mHeight;private Path mPath;/*** 指引线的开始位置x*/private int mLastPathX;/*** 指引线的开始位置y*/private int mLastPathY;/*** 指引下的结束位置*/private Point mTmpTarget = new Point();/*** 最大尝试次数*/private int mTryTimes = 4;/*** 回调接口*/private OnGestureLockViewListener mOnGestureLockViewListener;public GestureLockViewGroup(Context context, AttributeSet attrs){this(context, attrs, 0);}public GestureLockViewGroup(Context context, AttributeSet attrs,int defStyle){super(context, attrs, defStyle);/*** 获得所有自定义的参数的值*/TypedArray a = context.getTheme().obtainStyledAttributes(attrs,R.styleable.GestureLockViewGroup, defStyle, 0);int n = a.getIndexCount();for (int i = 0; i < n; i++){int attr = a.getIndex(i);switch (attr){case R.styleable.GestureLockViewGroup_color_no_finger_inner_circle:mNoFingerInnerCircleColor = a.getColor(attr,mNoFingerInnerCircleColor);break;case R.styleable.GestureLockViewGroup_color_no_finger_outer_circle:mNoFingerOuterCircleColor = a.getColor(attr,mNoFingerOuterCircleColor);break;case R.styleable.GestureLockViewGroup_color_finger_on:mFingerOnColor = a.getColor(attr, mFingerOnColor);break;case R.styleable.GestureLockViewGroup_color_finger_up:mFingerUpColor = a.getColor(attr, mFingerUpColor);break;case R.styleable.GestureLockViewGroup_count:mCount = a.getInt(attr, 3);break;case R.styleable.GestureLockViewGroup_tryTimes:mTryTimes = a.getInt(attr, 5);default:break;}}a.recycle();// 初始化画笔mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);mPaint.setStyle(Paint.Style.STROKE);// mPaint.setStrokeWidth(20);mPaint.setStrokeCap(Paint.Cap.ROUND);mPaint.setStrokeJoin(Paint.Join.ROUND);// mPaint.setColor(Color.parseColor("#aaffffff"));mPath = new Path();}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){super.onMeasure(widthMeasureSpec, heightMeasureSpec);mWidth = MeasureSpec.getSize(widthMeasureSpec);mHeight = MeasureSpec.getSize(heightMeasureSpec);// Log.e(TAG, mWidth + "");// Log.e(TAG, mHeight + "");mHeight = mWidth = mWidth < mHeight ? mWidth : mHeight;// setMeasuredDimension(mWidth, mHeight);// 初始化mGestureLockViewsif (mGestureLockViews == null){mGestureLockViews = new GestureLockView[mCount * mCount];// 计算每个GestureLockView的宽度mGestureLockViewWidth = (int) (4 * mWidth * 1.0f / (5 * mCount + 1));//计算每个GestureLockView的间距mMarginBetweenLockView = (int) (mGestureLockViewWidth * 0.25);// 设置画笔的宽度为GestureLockView的内圆直径稍微小点（不喜欢的话，随便设）mPaint.setStrokeWidth(mGestureLockViewWidth * 0.29f);for (int i = 0; i < mGestureLockViews.length; i++){//初始化每个GestureLockViewmGestureLockViews[i] = new GestureLockView(getContext(),mNoFingerInnerCircleColor, mNoFingerOuterCircleColor,mFingerOnColor, mFingerUpColor);mGestureLockViews[i].setId(i + 1);//设置参数，主要是定位GestureLockView间的位置RelativeLayout.LayoutParams lockerParams = new RelativeLayout.LayoutParams(mGestureLockViewWidth, mGestureLockViewWidth);// 不是每行的第一个，则设置位置为前一个的右边if (i % mCount != 0){lockerParams.addRule(RelativeLayout.RIGHT_OF,mGestureLockViews[i - 1].getId());}// 从第二行开始，设置为上一行同一位置View的下面if (i > mCount - 1){lockerParams.addRule(RelativeLayout.BELOW,mGestureLockViews[i - mCount].getId());}//设置右下左上的边距int rightMargin = mMarginBetweenLockView;int bottomMargin = mMarginBetweenLockView;int leftMagin = 0;int topMargin = 0;/*** 每个View都有右外边距和底外边距 第一行的有上外边距 第一列的有左外边距*/if (i >= 0 && i < mCount)// 第一行{topMargin = mMarginBetweenLockView;}if (i % mCount == 0)// 第一列{leftMagin = mMarginBetweenLockView;}lockerParams.setMargins(leftMagin, topMargin, rightMargin,bottomMargin);mGestureLockViews[i].setMode(Mode.STATUS_NO_FINGER);addView(mGestureLockViews[i], lockerParams);}Log.e(TAG, "mWidth = " + mWidth + " ,  mGestureViewWidth = "+ mGestureLockViewWidth + " , mMarginBetweenLockView = "+ mMarginBetweenLockView);}}@Overridepublic boolean onTouchEvent(MotionEvent event){int action = event.getAction();int x = (int) event.getX();int y = (int) event.getY();switch (action){case MotionEvent.ACTION_DOWN:// 重置reset();break;case MotionEvent.ACTION_MOVE:mPaint.setColor(mFingerOnColor);mPaint.setAlpha(50);GestureLockView child = getChildIdByPos(x, y);if (child != null){int cId = child.getId();if (!mChoose.contains(cId)){mChoose.add(cId);child.setMode(Mode.STATUS_FINGER_ON);if (mOnGestureLockViewListener != null)mOnGestureLockViewListener.onBlockSelected(cId);// 设置指引线的起点mLastPathX = child.getLeft() / 2 + child.getRight() / 2;mLastPathY = child.getTop() / 2 + child.getBottom() / 2;if (mChoose.size() == 1)// 当前添加为第一个{mPath.moveTo(mLastPathX, mLastPathY);} else// 非第一个，将两者使用线连上{mPath.lineTo(mLastPathX, mLastPathY);}}}// 指引线的终点mTmpTarget.x = x;mTmpTarget.y = y;break;case MotionEvent.ACTION_UP:mPaint.setColor(mFingerUpColor);mPaint.setAlpha(50);this.mTryTimes--;// 回调是否成功if (mOnGestureLockViewListener != null && mChoose.size() > 0){mOnGestureLockViewListener.onGestureEvent(checkAnswer());if (this.mTryTimes == 0){mOnGestureLockViewListener.onUnmatchedExceedBoundary();}}Log.e(TAG, "mUnMatchExceedBoundary = " + mTryTimes);Log.e(TAG, "mChoose = " + mChoose);// 将终点设置位置为起点，即取消指引线mTmpTarget.x = mLastPathX;mTmpTarget.y = mLastPathY;// 改变子元素的状态为UPchangeItemMode();// 计算每个元素中箭头需要旋转的角度for (int i = 0; i + 1 < mChoose.size(); i++){int childId = mChoose.get(i);int nextChildId = mChoose.get(i + 1);GestureLockView startChild = (GestureLockView) findViewById(childId);GestureLockView nextChild = (GestureLockView) findViewById(nextChildId);int dx = nextChild.getLeft() - startChild.getLeft();int dy = nextChild.getTop() - startChild.getTop();// 计算角度int angle = (int) Math.toDegrees(Math.atan2(dy, dx)) + 90;startChild.setArrowDegree(angle);}//reset();break;}invalidate();return true;}private void changeItemMode(){for (GestureLockView gestureLockView : mGestureLockViews){if (mChoose.contains(gestureLockView.getId())){gestureLockView.setMode(Mode.STATUS_FINGER_UP);}}}/*** * 做一些必要的重置*/private void reset(){mChoose.clear();mPath.reset();for (GestureLockView gestureLockView : mGestureLockViews){gestureLockView.setMode(Mode.STATUS_NO_FINGER);gestureLockView.setArrowDegree(-1);}}/*** 检查用户绘制的手势是否正确* @return*/private boolean checkAnswer(){if (mAnswer.length != mChoose.size())return false;for (int i = 0; i < mAnswer.length; i++){if (mAnswer[i] != mChoose.get(i))return false;}return true;}/*** 检查当前左边是否在child中* @param child* @param x* @param y* @return*/private boolean checkPositionInChild(View child, int x, int y){//设置了内边距，即x,y必须落入下GestureLockView的内部中间的小区域中，可以通过调整padding使得x,y落入范围不变大，或者不设置paddingint padding = (int) (mGestureLockViewWidth * 0.15);if (x >= child.getLeft() + padding && x <= child.getRight() - padding&& y >= child.getTop() + padding&& y <= child.getBottom() - padding){return true;}return false;}/*** 通过x,y获得落入的GestureLockView* @param x* @param y* @return*/private GestureLockView getChildIdByPos(int x, int y){for (GestureLockView gestureLockView : mGestureLockViews){if (checkPositionInChild(gestureLockView, x, y)){return gestureLockView;}}return null;}/*** 设置回调接口* * @param listener*/public void setOnGestureLockViewListener(OnGestureLockViewListener listener){this.mOnGestureLockViewListener = listener;}/*** 对外公布设置答案的方法* * @param answer*/public void setAnswer(int[] answer){this.mAnswer = answer;}/*** 设置最大实验次数* * @param boundary*/public void setUnMatchExceedBoundary(int boundary){this.mTryTimes = boundary;}@Overridepublic void dispatchDraw(Canvas canvas){super.dispatchDraw(canvas);//绘制GestureLockView间的连线if (mPath != null){canvas.drawPath(mPath, mPaint);}//绘制指引线if (mChoose.size() > 0){if (mLastPathX != 0 && mLastPathY != 0)canvas.drawLine(mLastPathX, mLastPathY, mTmpTarget.x,mTmpTarget.y, mPaint);}}public interface OnGestureLockViewListener{/*** 单独选中元素的Id* * @param position*/public void onBlockSelected(int cId);/*** 是否匹配* * @param matched*/public void onGestureEvent(boolean matched);/*** 超过尝试次数*/public void onUnmatchedExceedBoundary();}
}

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"xmlns:zhy="http://schemas.android.com/apk/res/com.zhy.zhy_gesturelockview"android:layout_width="match_parent"android:layout_height="match_parent" ><com.zhy.zhy_gesturelockview.view.GestureLockViewGroup
        android:id="@+id/id_gestureLockViewGroup"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#F2F2F7"android:gravity="center_vertical"zhy:count="3"zhy:tryTimes="5" />
<!--   zhy:color_no_finger_inner_circle="#ff085D58"zhy:color_no_finger_outer_circle="#ff08F0E0"zhy:color_finger_on="#FF1734BF" --></RelativeLayout>

调用

package com.zhy.zhy_gesturelockview;import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;import com.zhy.zhy_gesturelockview.view.GestureLockViewGroup;
import com.zhy.zhy_gesturelockview.view.GestureLockViewGroup.OnGestureLockViewListener;public class MainActivity extends Activity
{private GestureLockViewGroup mGestureLockViewGroup;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mGestureLockViewGroup = (GestureLockViewGroup) findViewById(R.id.id_gestureLockViewGroup);mGestureLockViewGroup.setAnswer(new int[] { 1, 2, 3 });mGestureLockViewGroup.setOnGestureLockViewListener(new OnGestureLockViewListener(){@Overridepublic void onUnmatchedExceedBoundary(){Toast.makeText(MainActivity.this, "错误5次...",Toast.LENGTH_SHORT).show();mGestureLockViewGroup.setUnMatchExceedBoundary(5);}@Overridepublic void onGestureEvent(boolean matched){Toast.makeText(MainActivity.this, matched+"",Toast.LENGTH_SHORT).show();}@Overridepublic void onBlockSelected(int cId){}});}}