超实用的Android手势锁制作实例教程

<?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> 

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();    }    @Override   protected 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);    }    @Override   protected 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;   } } 

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 = 4;   /**    * 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();   }    @Override   protected 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mGestureLockViews     if (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GestureLockView         mGestureLockViews[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);      }   }    @Override   public 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UP       changeItemMode();              // 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);       }       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padding     int 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;   }    @Override   public 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();   } } 

<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> 

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;    @Override   protected 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, 4,5 });     mGestureLockViewGroup         .setOnGestureLockViewListener(new OnGestureLockViewListener()         {            @Override           public void onUnmatchedExceedBoundary()           {             Toast.makeText(MainActivity.this, "错误5次...",                 Toast.LENGTH_SHORT).show();             mGestureLockViewGroup.setUnMatchExceedBoundary(5);           }            @Override           public void onGestureEvent(boolean matched)           {             Toast.makeText(MainActivity.this, matched+"",                 Toast.LENGTH_SHORT).show();           }            @Override           public void onBlockSelected(int cId)           {           }         });   }  }