如何在Android应用中实现一个手势密码功能

发布时间：2020-12-02 16:29:31 作者：Leah
来源：亿速云阅读：186

如何在Android应用中实现一个手势密码功能？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

实现思路：

1. 正上方的提示区域，用一个类(LockIndicator.java)来实现，自定义view来绘制9个提示图标；

2. 手势密码绘制区域，用一个类(GestureContentView.java)来实现，它继承自ViewGroup里面, 添加9个ImageView来表示图标, 在onLayout（）方法中设置它们的位置；

3. 手势路径绘制，用一个类(GestureDrawline.java)来实现，复写onTouchEvent()方法，在这个方法里面监听TouchEvent事件: ACTION_DOWN、ACTION_MOVE、ACTION_UP事件，来绘制手势连接不同点之间的路径；

4. 9个点的对象，用一个类(GesturePoint.java)来实现，保存它的位置、状态、背景图片等相关信息；

5. 手势密码的获取，判断手指当前的位置，根据滑动路径经过的点，按顺序保存绘制的点的顺序(这里的点顺序从上到下分别是：1,2,3,4,5,6,7,8,9)，不能有重复的点。

三、代码实现步骤：

1.要用一个类来表示这9个点中的第一个点。里面保留有当前点的上下左右的各个位置等属性

2.自定义GroupView，用来装9个点，9个点的显示是通过ImageView。复写onLayout这个方法，让点按需求排列

3.定义一个可以画线的View，复写onTouchEvent方法，在这个方法里面进行画直线的操作

4.判断用户手指当前的位置，取出当前的位置去与那9个点中的每个点的位置进行比较，如果用户点的位置在某一个点之内，那么当那个点置换背景图片。

具体实现代码如下：

1.LockIndicator.java 图案提示类

package com.snda.fund.widget;  

import com.snda.fund.R;  

import android.content.Context; 

import android.content.res.TypedArray; 

import android.graphics.Canvas; 

import android.graphics.Paint; 

import android.graphics.Paint.Style; 

import android.graphics.drawable.Drawable; 

import android.os.PowerManager; 

import android.text.TextUtils; 

import android.util.AttributeSet; 

import android.util.Log; 

import android.view.View; 

  

/** 

 * 

 * 手势密码图案提示 

 * @author ganchuanpu

 * 

 */ 

public class LockIndicator extends View { 

  private int numRow = 3; // 行 

  private int numColum = 3; // 列 

  private int patternWidth = 40; 

  private int patternHeight = 40; 

  private int f = 5; 

  private int g = 5; 

  private int strokeWidth = 3; 

  private Paint paint = null; 

  private Drawable patternNoraml = null; 

  private Drawable patternPressed = null; 

  private String lockPassStr; // 手势密码 

  

  public LockIndicator(Context paramContext) { 

    super(paramContext); 

  } 

  

  public LockIndicator(Context paramContext, AttributeSet paramAttributeSet) { 

    super(paramContext, paramAttributeSet, 0); 

    paint = new Paint(); 

    paint.setAntiAlias(true); 

    paint.setStrokeWidth(strokeWidth); 

    paint.setStyle(Paint.Style.STROKE); 

    patternNoraml = getResources().getDrawable(R.drawable.lock_pattern_node_normal); 

    patternPressed = getResources().getDrawable(R.drawable.lock_pattern_node_pressed); 

    if (patternPressed != null) { 

      patternWidth = patternPressed.getIntrinsicWidth(); 

      patternHeight = patternPressed.getIntrinsicHeight(); 

      this.f = (patternWidth / 4); 

      this.g = (patternHeight / 4); 

      patternPressed.setBounds(0, 0, patternWidth, patternHeight); 

      patternNoraml.setBounds(0, 0, patternWidth, patternHeight); 

    } 

  } 

  

  @Override 

  protected void onDraw(Canvas canvas) { 

    if ((patternPressed == null) || (patternNoraml == null)) { 

      return; 

    } 

    // 绘制3*3的图标 

    for (int i = 0; i < numRow; i++) { 

      for (int j = 0; j < numColum; j++) { 

        paint.setColor(-16777216); 

        int i1 = j * patternHeight + j * this.g; 

        int i2 = i * patternWidth + i * this.f; 

        canvas.save(); 

        canvas.translate(i1, i2); 

        String curNum = String.valueOf(numColum * i + (j + 1)); 

        if (!TextUtils.isEmpty(lockPassStr)) { 

          if (lockPassStr.indexOf(curNum) == -1) { 

            // 未选中 

            patternNoraml.draw(canvas); 

          } else { 

            // 被选中 

            patternPressed.draw(canvas); 

          } 

        } else { 

          // 重置状态 

          patternNoraml.draw(canvas); 

        } 

        canvas.restore(); 

      } 

    } 

  } 

  

  @Override 

  protected void onMeasure(int paramInt1, int paramInt2) { 

    if (patternPressed != null) 

      setMeasuredDimension(numColum * patternHeight + this.g 

          * (-1 + numColum), numRow * patternWidth + this.f 

          * (-1 + numRow)); 

  } 

  

  /** 

   * 请求重新绘制 

   * @param paramString 手势密码字符序列 

   */ 

  public void setPath(String paramString) { 

    lockPassStr = paramString; 

    invalidate(); 

  } 

  

}

2.GestureContentView.java 手势密码容器类

它继承ViewGroup，通过addView()方法添加子view，手势密码的9个输入点(GesturePoint)、GestureDrawline手势密码路径都放在这个容器当中，下面是它的具体实现方法：

package com.wujay.fund.widget; 

import java.util.ArrayList; 

import java.util.List; 

import android.content.Context; 

import android.view.View; 

import android.view.ViewGroup; 

import android.widget.ImageView; 

import com.wujay.fund.R; 

import com.wujay.fund.common.AppUtil; 

import com.wujay.fund.entity.GesturePoint; 

import com.wujay.fund.widget.GestureDrawline.GestureCallBack; 

  

/** 

 * 手势密码容器类 

 * 

 */ 

public class GestureContentView extends ViewGroup { 

  

  private int baseNum = 6; 

  

  private int[] screenDispaly; 

  

  /** 

   * 每个点区域的宽度 

   */ 

  private int blockWidth; 

  /** 

   * 声明一个集合用来封装坐标集合 

   */ 

  private List<GesturePoint> list; 

  private Context context; 

  private boolean isVerify; 

  private GestureDrawline gestureDrawline; 

  

  /** 

   * 包含9个ImageView的容器，初始化 

   * @param context 

   * @param isVerify 是否为校验手势密码 

   * @param passWord 用户传入密码 

   * @param callBack 手势绘制完毕的回调 

   */ 

  public GestureContentView(Context context, boolean isVerify, String passWord, GestureCallBack callBack) { 

    super(context); 

    screenDispaly = AppUtil.getScreenDispaly(context); 

    blockWidth = screenDispaly[0]/3; 

    this.list = new ArrayList<GesturePoint>(); 

    this.context = context; 

    this.isVerify = isVerify; 

    // 添加9个图标 

    addChild(); 

    // 初始化一个可以画线的view 

    gestureDrawline = new GestureDrawline(context, list, isVerify, passWord, callBack); 

  } 

  

  private void addChild(){ 

    for (int i = 0; i < 9; i++) { 

      ImageView image = new ImageView(context); 

      image.setBackgroundResource(R.drawable.gesture_node_normal); 

      this.addView(image); 

      invalidate(); 

      // 第几行 

      int row = i / 3; 

      // 第几列 

      int col = i % 3; 

      // 定义点的每个属性 

      int leftX = col*blockWidth+blockWidth/baseNum; 

      int topY = row*blockWidth+blockWidth/baseNum; 

      int rightX = col*blockWidth+blockWidth-blockWidth/baseNum; 

      int bottomY = row*blockWidth+blockWidth-blockWidth/baseNum; 

      GesturePoint p = new GesturePoint(leftX, rightX, topY, bottomY, image,i+1); 

      this.list.add(p); 

    } 

  } 

  

  public void setParentView(ViewGroup parent){ 

    // 得到屏幕的宽度 

    int width = screenDispaly[0]; 

    LayoutParams layoutParams = new LayoutParams(width, width); 

    this.setLayoutParams(layoutParams); 

    gestureDrawline.setLayoutParams(layoutParams); 

    parent.addView(gestureDrawline); 

    parent.addView(this); 

  } 

  

  @Override 

  protected void onLayout(boolean changed, int l, int t, int r, int b) { 

    for (int i = 0; i < getChildCount(); i++) { 

      //第几行 

      int row = i/3; 

      //第几列 

      int col = i%3; 

      View v = getChildAt(i); 

      v.layout(col*blockWidth+blockWidth/baseNum, row*blockWidth+blockWidth/baseNum,  

          col*blockWidth+blockWidth-blockWidth/baseNum, row*blockWidth+blockWidth-blockWidth/baseNum); 

    } 

  } 

  

  @Override 

  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 

    super.onMeasure(widthMeasureSpec, heightMeasureSpec); 

    // 遍历设置每个子view的大小 

    for (int i = 0; i < getChildCount(); i++) { 

      View v = getChildAt(i); 

      v.measure(widthMeasureSpec, heightMeasureSpec); 

    } 

  } 

  

  /** 

   * 保留路径delayTime时间长 

   * @param delayTime 

   */ 

  public void clearDrawlineState(long delayTime) { 

    gestureDrawline.clearDrawlineState(delayTime); 

  } 

  

}

3.GestureDrawline.java 手势密码路径绘制类

根据OnTouchEvent方法的不同事件，ACTION_DOWN、ACTION_MOVE、ACTION_UP分别处理不同的逻辑。

package com.wujay.fund.widget;  

import java.util.ArrayList; 

import java.util.HashMap; 

import java.util.List; 

import java.util.Map; 

import com.wujay.fund.common.AppUtil; 

import com.wujay.fund.common.Constants; 

import com.wujay.fund.entity.GesturePoint; 

import android.content.Context; 

import android.graphics.Bitmap; 

import android.graphics.Canvas; 

import android.graphics.Color; 

import android.graphics.Paint; 

import android.graphics.Paint.Style; 

import android.graphics.PorterDuff; 

import android.os.Handler; 

import android.util.Log; 

import android.util.Pair; 

import android.view.MotionEvent; 

import android.view.View; 

import android.widget.Toast; 

  

/** 

 * 手势密码路径绘制 

 * 

 */ 

public class GestureDrawline extends View { 

  private int mov_x;// 声明起点坐标 

  private int mov_y; 

  private Paint paint;// 声明画笔 

  private Canvas canvas;// 画布 

  private Bitmap bitmap;// 位图 

  private List<GesturePoint> list;// 装有各个view坐标的集合 

  private List<Pair<GesturePoint, GesturePoint>> lineList;// 记录画过的线 

  private Map<String, GesturePoint> autoCheckPointMap;// 自动选中的情况点 

  private boolean isDrawEnable = true; // 是否允许绘制 

  

  /** 

   * 屏幕的宽度和高度 

   */ 

  private int[] screenDispaly; 

  

  /** 

   * 手指当前在哪个Point内 

   */ 

  private GesturePoint currentPoint; 

  /** 

   * 用户绘图的回调 

   */ 

  private GestureCallBack callBack; 

  

  /** 

   * 用户当前绘制的图形密码 

   */ 

  private StringBuilder passWordSb; 

  

  /** 

   * 是否为校验 

   */ 

  private boolean isVerify; 

  

  /** 

   * 用户传入的passWord 

   */ 

  private String passWord; 

  

  public GestureDrawline(Context context, List<GesturePoint> list, boolean isVerify, 

      String passWord, GestureCallBack callBack) { 

    super(context); 

    screenDispaly = AppUtil.getScreenDispaly(context); 

    paint = new Paint(Paint.DITHER_FLAG);// 创建一个画笔 

    bitmap = Bitmap.createBitmap(screenDispaly[0], screenDispaly[0], Bitmap.Config.ARGB_8888); // 设置位图的宽高 

    canvas = new Canvas(); 

    canvas.setBitmap(bitmap); 

    paint.setStyle(Style.STROKE);// 设置非填充 

    paint.setStrokeWidth(10);// 笔宽5像素 

    paint.setColor(Color.rgb(245, 142, 33));// 设置默认连线颜色 

    paint.setAntiAlias(true);// 不显示锯齿 

  

    this.list = list; 

    this.lineList = new ArrayList<Pair<GesturePoint, GesturePoint>>(); 

  

    initAutoCheckPointMap(); 

    this.callBack = callBack; 

  

    // 初始化密码缓存 

    this.isVerify = isVerify; 

    this.passWordSb = new StringBuilder(); 

    this.passWord = passWord; 

  } 

  

  private void initAutoCheckPointMap() { 

    autoCheckPointMap = new HashMap<String,GesturePoint>(); 

    autoCheckPointMap.put("1,3", getGesturePointByNum(2)); 

    autoCheckPointMap.put("1,7", getGesturePointByNum(4)); 

    autoCheckPointMap.put("1,9", getGesturePointByNum(5)); 

    autoCheckPointMap.put("2,8", getGesturePointByNum(5)); 

    autoCheckPointMap.put("3,7", getGesturePointByNum(5)); 

    autoCheckPointMap.put("3,9", getGesturePointByNum(6)); 

    autoCheckPointMap.put("4,6", getGesturePointByNum(5)); 

    autoCheckPointMap.put("7,9", getGesturePointByNum(8)); 

  } 

  

  private GesturePoint getGesturePointByNum(int num) { 

    for (GesturePoint point : list) { 

      if (point.getNum() == num) { 

        return point; 

      } 

    } 

    return null; 

  } 

  

  // 画位图 

  @Override 

  protected void onDraw(Canvas canvas) { 

    // super.onDraw(canvas); 

    canvas.drawBitmap(bitmap, 0, 0, null); 

  } 

  

  // 触摸事件 

  @Override 

  public boolean onTouchEvent(MotionEvent event) { 

    if (isDrawEnable == false) { 

      // 当期不允许绘制 

      return true; 

    } 

    paint.setColor(Color.rgb(245, 142, 33));// 设置默认连线颜色 

    switch (event.getAction()) { 

    case MotionEvent.ACTION_DOWN: 

      mov_x = (int) event.getX(); 

      mov_y = (int) event.getY(); 

      // 判断当前点击的位置是处于哪个点之内 

      currentPoint = getPointAt(mov_x, mov_y); 

      if (currentPoint != null) { 

        currentPoint.setPointState(Constants.POINT_STATE_SELECTED); 

        passWordSb.append(currentPoint.getNum()); 

      } 

      // canvas.drawPoint(mov_x, mov_y, paint);// 画点 

      invalidate(); 

      break; 

    case MotionEvent.ACTION_MOVE: 

      clearScreenAndDrawList(); 

  

      // 得到当前移动位置是处于哪个点内 

      GesturePoint pointAt = getPointAt((int) event.getX(), (int) event.getY()); 

      // 代表当前用户手指处于点与点之前 

      if (currentPoint == null && pointAt == null) { 

        return true; 

      } else {// 代表用户的手指移动到了点上 

        if (currentPoint == null) {// 先判断当前的point是不是为null 

          // 如果为空，那么把手指移动到的点赋值给currentPoint 

          currentPoint = pointAt; 

          // 把currentPoint这个点设置选中为true; 

          currentPoint.setPointState(Constants.POINT_STATE_SELECTED); 

          passWordSb.append(currentPoint.getNum()); 

        } 

      } 

      if (pointAt == null || currentPoint.equals(pointAt) || Constants.POINT_STATE_SELECTED == pointAt.getPointState()) { 

        // 点击移动区域不在圆的区域，或者当前点击的点与当前移动到的点的位置相同，或者当前点击的点处于选中状态 

        // 那么以当前的点中心为起点，以手指移动位置为终点画线 

        canvas.drawLine(currentPoint.getCenterX(), currentPoint.getCenterY(), event.getX(), event.getY(), paint);// 画线 

      } else { 

        // 如果当前点击的点与当前移动到的点的位置不同 

        // 那么以前前点的中心为起点，以手移动到的点的位置画线 

        canvas.drawLine(currentPoint.getCenterX(), currentPoint.getCenterY(), pointAt.getCenterX(), pointAt.getCenterY(), paint);// 画线 

        pointAt.setPointState(Constants.POINT_STATE_SELECTED); 

  

        // 判断是否中间点需要选中 

        GesturePoint betweenPoint = getBetweenCheckPoint(currentPoint, pointAt); 

        if (betweenPoint != null && Constants.POINT_STATE_SELECTED != betweenPoint.getPointState()) { 

          // 存在中间点并且没有被选中 

          Pair<GesturePoint, GesturePoint> pair1 = new Pair<GesturePoint, GesturePoint>(currentPoint, betweenPoint); 

          lineList.add(pair1); 

          passWordSb.append(betweenPoint.getNum()); 

          Pair<GesturePoint, GesturePoint> pair2 = new Pair<GesturePoint, GesturePoint>(betweenPoint, pointAt); 

          lineList.add(pair2); 

          passWordSb.append(pointAt.getNum()); 

          // 设置中间点选中 

          betweenPoint.setPointState(Constants.POINT_STATE_SELECTED); 

          // 赋值当前的point; 

          currentPoint = pointAt; 

        } else { 

          Pair<GesturePoint, GesturePoint> pair = new Pair<GesturePoint, GesturePoint>(currentPoint, pointAt); 

          lineList.add(pair); 

          passWordSb.append(pointAt.getNum()); 

          // 赋值当前的point; 

          currentPoint = pointAt; 

        } 

      } 

      invalidate(); 

      break; 

    case MotionEvent.ACTION_UP:// 当手指抬起的时候 

      if (isVerify) { 

        // 手势密码校验 

        // 清掉屏幕上所有的线，只画上集合里面保存的线 

        if (passWord.equals(passWordSb.toString())) { 

          // 代表用户绘制的密码手势与传入的密码相同 

          callBack.checkedSuccess(); 

        } else { 

          // 用户绘制的密码与传入的密码不同。 

          callBack.checkedFail(); 

        } 

      } else { 

        callBack.onGestureCodeInput(passWordSb.toString()); 

      } 

      break; 

    default: 

      break; 

    } 

    return true; 

  } 

  

  /** 

   * 指定时间去清除绘制的状态 

   * @param delayTime 延迟执行时间 

   */ 

  public void clearDrawlineState(long delayTime) { 

    if (delayTime > 0) { 

      // 绘制红色提示路线 

      isDrawEnable = false; 

      drawErrorPathTip(); 

    } 

    new Handler().postDelayed(new clearStateRunnable(), delayTime); 

  } 

  

  /** 

   * 清除绘制状态的线程 

   */ 

  final class clearStateRunnable implements Runnable { 

    public void run() { 

      // 重置passWordSb 

      passWordSb = new StringBuilder(); 

      // 清空保存点的集合 

      lineList.clear(); 

      // 重新绘制界面 

      clearScreenAndDrawList(); 

      for (GesturePoint p : list) { 

        p.setPointState(Constants.POINT_STATE_NORMAL); 

      } 

      invalidate(); 

      isDrawEnable = true; 

    } 

  } 

  

  /** 

   * 通过点的位置去集合里面查找这个点是包含在哪个Point里面的 

   * 

   * @param x 

   * @param y 

   * @return 如果没有找到，则返回null，代表用户当前移动的地方属于点与点之间 

   */ 

  private GesturePoint getPointAt(int x, int y) { 

  

    for (GesturePoint point : list) { 

      // 先判断x 

      int leftX = point.getLeftX(); 

      int rightX = point.getRightX(); 

      if (!(x >= leftX && x < rightX)) { 

        // 如果为假，则跳到下一个对比 

        continue; 

      } 

  

      int topY = point.getTopY(); 

      int bottomY = point.getBottomY(); 

      if (!(y >= topY && y < bottomY)) { 

        // 如果为假，则跳到下一个对比 

        continue; 

      } 

  

      // 如果执行到这，那么说明当前点击的点的位置在遍历到点的位置这个地方 

      return point; 

    } 

  

    return null; 

  } 

  

  private GesturePoint getBetweenCheckPoint(GesturePoint pointStart, GesturePoint pointEnd) { 

    int startNum = pointStart.getNum(); 

    int endNum = pointEnd.getNum(); 

    String key = null; 

    if (startNum < endNum) { 

      key = startNum + "," + endNum; 

    } else { 

      key = endNum + "," + startNum; 

    } 

    return autoCheckPointMap.get(key); 

  } 

  

  /** 

   * 清掉屏幕上所有的线，然后画出集合里面的线 

   */ 

  private void clearScreenAndDrawList() { 

    canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); 

    for (Pair<GesturePoint, GesturePoint> pair : lineList) { 

      canvas.drawLine(pair.first.getCenterX(), pair.first.getCenterY(), 

          pair.second.getCenterX(), pair.second.getCenterY(), paint);// 画线 

    } 

  } 

  

  /** 

   * 校验错误/两次绘制不一致提示 

   */ 

  private void drawErrorPathTip() { 

    canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); 

    paint.setColor(Color.rgb(154, 7, 21));// 设置默认线路颜色 

    for (Pair<GesturePoint, GesturePoint> pair : lineList) { 

      pair.first.setPointState(Constants.POINT_STATE_WRONG); 

      pair.second.setPointState(Constants.POINT_STATE_WRONG); 

      canvas.drawLine(pair.first.getCenterX(), pair.first.getCenterY(), 

          pair.second.getCenterX(), pair.second.getCenterY(), paint);// 画线 

    } 

    invalidate(); 

  } 

  

  public interface GestureCallBack { 

  

    /** 

     * 用户设置/输入了手势密码 

     */ 

    public abstract void onGestureCodeInput(String inputCode); 

  

    /** 

     * 代表用户绘制的密码与传入的密码相同 

     */ 

    public abstract void checkedSuccess(); 

  

    /** 

     * 代表用户绘制的密码与传入的密码不相同 

     */ 

    public abstract void checkedFail(); 

  } 

  

}

4.GestureEditActivity.java 手势密码设置界面

手势密码设置

代码如下：

package com.wujay.fund;  

import com.wujay.fund.R; 

import android.app.Activity; 

import android.content.DialogInterface; 

import android.content.Intent; 

import android.os.Bundle; 

import android.text.Html; 

import android.text.TextUtils; 

import android.view.KeyEvent; 

import android.view.View; 

import android.view.View.OnClickListener; 

import android.view.animation.Animation; 

import android.view.animation.AnimationUtils; 

import android.widget.FrameLayout; 

import android.widget.TextView; 

import android.widget.Toast; 

import com.wujay.fund.common.Constants; 

import com.wujay.fund.widget.GestureContentView; 

import com.wujay.fund.widget.GestureDrawline.GestureCallBack; 

import com.wujay.fund.widget.LockIndicator; 

  

/** 

 * 

 * 手势密码设置界面 

 * 

 */ 

public class GestureEditActivity extends Activity implements OnClickListener { 

  /** 手机号码*/ 

  public static final String PARAM_PHONE_NUMBER = "PARAM_PHONE_NUMBER"; 

  /** 意图 */ 

  public static final String PARAM_INTENT_CODE = "PARAM_INTENT_CODE"; 

  /** 首次提示绘制手势密码，可以选择跳过 */ 

  public static final String PARAM_IS_FIRST_ADVICE = "PARAM_IS_FIRST_ADVICE"; 

  private TextView mTextTitle; 

  private TextView mTextCancel; 

  private LockIndicator mLockIndicator; 

  private TextView mTextTip; 

  private FrameLayout mGestureContainer; 

  private GestureContentView mGestureContentView; 

  private TextView mTextReset; 

  private String mParamSetUpcode = null; 

  private String mParamPhoneNumber; 

  private boolean mIsFirstInput = true; 

  private String mFirstPassword = null; 

  private String mConfirmPassword = null; 

  private int mParamIntentCode; 

  

  @Override 

  public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_gesture_edit); 

    setUpViews(); 

    setUpListeners(); 

  } 

  

  private void setUpViews() { 

    mTextTitle = (TextView) findViewById(R.id.text_title); 

    mTextCancel = (TextView) findViewById(R.id.text_cancel); 

    mTextReset = (TextView) findViewById(R.id.text_reset); 

    mTextReset.setClickable(false); 

    mLockIndicator = (LockIndicator) findViewById(R.id.lock_indicator); 

    mTextTip = (TextView) findViewById(R.id.text_tip); 

    mGestureContainer = (FrameLayout) findViewById(R.id.gesture_container); 

    // 初始化一个显示各个点的viewGroup 

    mGestureContentView = new GestureContentView(this, false, "", new GestureCallBack() { 

      @Override 

      public void onGestureCodeInput(String inputCode) { 

        if (!isInputPassValidate(inputCode)) { 

          mTextTip.setText(Html.fromHtml("<font color='#c70c1e'>最少链接4个点, 请重新输入</font>")); 

          mGestureContentView.clearDrawlineState(0L); 

          return; 

        } 

        if (mIsFirstInput) { 

          mFirstPassword = inputCode; 

          updateCodeList(inputCode); 

          mGestureContentView.clearDrawlineState(0L); 

          mTextReset.setClickable(true); 

          mTextReset.setText(getString(R.string.reset_gesture_code)); 

        } else { 

          if (inputCode.equals(mFirstPassword)) { 

              Toast.makeText(GestureEditActivity.this, "设置成功", Toast.LENGTH_SHORT).show(); 

            mGestureContentView.clearDrawlineState(0L); 

            GestureEditActivity.this.finish(); 

          } else { 

            mTextTip.setText(Html.fromHtml("<font color='#c70c1e'>与上一次绘制不一致，请重新绘制</font>")); 

            // 左右移动动画 

            Animation shakeAnimation = AnimationUtils.loadAnimation(GestureEditActivity.this, R.anim.shake); 

            mTextTip.startAnimation(shakeAnimation); 

            // 保持绘制的线，1.5秒后清除 

            mGestureContentView.clearDrawlineState(1300L); 

          } 

        } 

        mIsFirstInput = false; 

      } 

  

      @Override 

      public void checkedSuccess() { 

  

      } 

  

      @Override 

      public void checkedFail() { 

  

      } 

    }); 

    // 设置手势解锁显示到哪个布局里面 

    mGestureContentView.setParentView(mGestureContainer); 

    updateCodeList(""); 

  } 

  

  private void setUpListeners() { 

    mTextCancel.setOnClickListener(this); 

    mTextReset.setOnClickListener(this); 

  } 

  

  private void updateCodeList(String inputCode) { 

    // 更新选择的图案 

    mLockIndicator.setPath(inputCode); 

  } 

  

  @Override 

  public void onClick(View v) { 

    switch (v.getId()) { 

    case R.id.text_cancel: 

      this.finish(); 

      break; 

    case R.id.text_reset: 

      mIsFirstInput = true; 

      updateCodeList(""); 

      mTextTip.setText(getString(R.string.set_gesture_pattern)); 

      break; 

    default: 

      break; 

    } 

  } 

  

  private boolean isInputPassValidate(String inputPassword) { 

    if (TextUtils.isEmpty(inputPassword) || inputPassword.length() < 4) { 

      return false; 

    } 

    return true; 

  } 

  

}

5.GestureVerifyActivity.java 手势密码校验界面

代码如下：

package com.wujay.fund;  

import com.wujay.fund.R; 

import com.wujay.fund.widget.GestureContentView; 

import com.wujay.fund.widget.GestureDrawline.GestureCallBack; 

import android.app.Activity; 

import android.app.Dialog; 

import android.content.DialogInterface; 

import android.content.DialogInterface.OnClickListener; 

import android.content.Intent; 

import android.os.Bundle; 

import android.text.Html; 

import android.text.TextUtils; 

import android.view.KeyEvent; 

import android.view.View; 

import android.view.animation.Animation; 

import android.view.animation.AnimationUtils; 

import android.widget.FrameLayout; 

import android.widget.ImageView; 

import android.widget.RelativeLayout; 

import android.widget.TextView; 

import android.widget.Toast; 

  

/** 

 * 

 * 手势绘制/校验界面 

 * 

 */ 

public class GestureVerifyActivity extends Activity implements android.view.View.OnClickListener { 

  /** 手机号码*/ 

  public static final String PARAM_PHONE_NUMBER = "PARAM_PHONE_NUMBER"; 

  /** 意图 */ 

  public static final String PARAM_INTENT_CODE = "PARAM_INTENT_CODE"; 

  private RelativeLayout mTopLayout; 

  private TextView mTextTitle; 

  private TextView mTextCancel; 

  private ImageView mImgUserLogo; 

  private TextView mTextPhoneNumber; 

  private TextView mTextTip; 

  private FrameLayout mGestureContainer; 

  private GestureContentView mGestureContentView; 

  private TextView mTextForget; 

  private TextView mTextOther; 

  private String mParamPhoneNumber; 

  private long mExitTime = 0; 

  private int mParamIntentCode; 

  

  @Override 

  public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_gesture_verify); 

    ObtainExtraData(); 

    setUpViews(); 

    setUpListeners(); 

  } 

  

  private void ObtainExtraData() { 

    mParamPhoneNumber = getIntent().getStringExtra(PARAM_PHONE_NUMBER); 

    mParamIntentCode = getIntent().getIntExtra(PARAM_INTENT_CODE, 0); 

  } 

  

  private void setUpViews() { 

    mTopLayout = (RelativeLayout) findViewById(R.id.top_layout); 

    mTextTitle = (TextView) findViewById(R.id.text_title); 

    mTextCancel = (TextView) findViewById(R.id.text_cancel); 

    mImgUserLogo = (ImageView) findViewById(R.id.user_logo); 

    mTextPhoneNumber = (TextView) findViewById(R.id.text_phone_number); 

    mTextTip = (TextView) findViewById(R.id.text_tip); 

    mGestureContainer = (FrameLayout) findViewById(R.id.gesture_container); 

    mTextForget = (TextView) findViewById(R.id.text_forget_gesture); 

    mTextOther = (TextView) findViewById(R.id.text_other_account); 

  

    // 初始化一个显示各个点的viewGroup 

    mGestureContentView = new GestureContentView(this, true, "1235789", 

        new GestureCallBack() { 

  

          @Override 

          public void onGestureCodeInput(String inputCode) { 

  

          } 

  

          @Override 

          public void checkedSuccess() { 

            mGestureContentView.clearDrawlineState(0L); 

            Toast.makeText(GestureVerifyActivity.this, "密码正确", 1000).show(); 

            GestureVerifyActivity.this.finish(); 

          } 

  

          @Override 

          public void checkedFail() { 

            mGestureContentView.clearDrawlineState(1300L); 

            mTextTip.setVisibility(View.VISIBLE); 

            mTextTip.setText(Html 

                .fromHtml("<font color='#c70c1e'>密码错误</font>")); 

            // 左右移动动画 

            Animation shakeAnimation = AnimationUtils.loadAnimation(GestureVerifyActivity.this, R.anim.shake); 

            mTextTip.startAnimation(shakeAnimation); 

          } 

        }); 

    // 设置手势解锁显示到哪个布局里面 

    mGestureContentView.setParentView(mGestureContainer); 

  } 

  

  private void setUpListeners() { 

    mTextCancel.setOnClickListener(this); 

    mTextForget.setOnClickListener(this); 

    mTextOther.setOnClickListener(this); 

  } 

  

  private String getProtectedMobile(String phoneNumber) { 

    if (TextUtils.isEmpty(phoneNumber) || phoneNumber.length() < 11) { 

      return ""; 

    } 

    StringBuilder builder = new StringBuilder(); 

    builder.append(phoneNumber.subSequence(0,3)); 

    builder.append("****"); 

    builder.append(phoneNumber.subSequence(7,11)); 

    return builder.toString(); 

  } 

  

  @Override 

  public void onClick(View v) { 

    switch (v.getId()) { 

    case R.id.text_cancel: 

      this.finish(); 

      break; 

    default: 

      break; 

    } 

  } 

  

}

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如何在Android应用中实现一个手势密码功能

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