如何在Android應(yīng)用中實現(xiàn)一個手勢密碼功能

如何在Android應(yīng)用中實現(xiàn)一個手勢密碼功能？很多新手對此不是很清楚，為了幫助大家解決這個難題，下面小編將為大家詳細講解，有這方面需求的人可以來學(xué)習(xí)下，希望你能有所收獲。

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實現(xiàn)思路：

1. 正上方的提示區(qū)域，用一個類(LockIndicator.java)來實現(xiàn)，自定義view來繪制9個提示圖標；

2. 手勢密碼繪制區(qū)域，用一個類(GestureContentView.java)來實現(xiàn)，它繼承自ViewGroup里面, 添加9個ImageView來表示圖標, 在onLayout（）方法中設(shè)置它們的位置；

3. 手勢路徑繪制，用一個類(GestureDrawline.java)來實現(xiàn)，復(fù)寫onTouchEvent()方法，在這個方法里面監(jiān)聽TouchEvent事件: ACTION_DOWN、ACTION_MOVE、ACTION_UP事件，來繪制手勢連接不同點之間的路徑；

4. 9個點的對象，用一個類(GesturePoint.java)來實現(xiàn)，保存它的位置、狀態(tài)、背景圖片等相關(guān)信息；

5. 手勢密碼的獲取，判斷手指當(dāng)前的位置，根據(jù)滑動路徑經(jīng)過的點，按順序保存繪制的點的順序(這里的點順序從上到下分別是：1,2,3,4,5,6,7,8,9)，不能有重復(fù)的點。

三、代碼實現(xiàn)步驟：

1.要用一個類來表示這9個點中的第一個點。里面保留有當(dāng)前點的上下左右的各個位置等屬性

2.自定義GroupView，用來裝9個點，9個點的顯示是通過ImageView。復(fù)寫onLayout這個方法，讓點按需求排列

3.定義一個可以畫線的View，復(fù)寫onTouchEvent方法，在這個方法里面進行畫直線的操作

4.判斷用戶手指當(dāng)前的位置，取出當(dāng)前的位置去與那9個點中的每個點的位置進行比較，如果用戶點的位置在某一個點之內(nèi)，那么當(dāng)那個點置換背景圖片。

具體實現(xiàn)代碼如下：

1.LockIndicator.java 圖案提示類

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; 

  

/** 

 * 

 * 手勢密碼圖案提示 

 * @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; // 手勢密碼 

  

  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; 

    } 

    // 繪制3*3的圖標 

    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) { 

            // 未選中 

            patternNoraml.draw(canvas); 

          } else { 

            // 被選中 

            patternPressed.draw(canvas); 

          } 

        } else { 

          // 重置狀態(tài) 

          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)); 

  } 

  

  /** 

   * 請求重新繪制 

   * @param paramString 手勢密碼字符序列 

   */ 

  public void setPath(String paramString) { 

    lockPassStr = paramString; 

    invalidate(); 

  } 

  

}

2.GestureContentView.java 手勢密碼容器類

它繼承ViewGroup，通過addView()方法添加子view，手勢密碼的9個輸入點(GesturePoint)、GestureDrawline手勢密碼路徑都放在這個容器當(dāng)中，下面是它的具體實現(xiàn)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; 

  

/** 

 * 手勢密碼容器類 

 * 

 */ 

public class GestureContentView extends ViewGroup { 

  

  private int baseNum = 6; 

  

  private int[] screenDispaly; 

  

  /** 

   * 每個點區(qū)域的寬度 

   */ 

  private int blockWidth; 

  /** 

   * 聲明一個集合用來封裝坐標集合 

   */ 

  private List<GesturePoint> list; 

  private Context context; 

  private boolean isVerify; 

  private GestureDrawline gestureDrawline; 

  

  /** 

   * 包含9個ImageView的容器，初始化 

   * @param context 

   * @param isVerify 是否為校驗手勢密碼 

   * @param passWord 用戶傳入密碼 

   * @param callBack 手勢繪制完畢的回調(diào) 

   */ 

  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個圖標 

    addChild(); 

    // 初始化一個可以畫線的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(); 

      // 第幾行 

      int row = i / 3; 

      // 第幾列 

      int col = i % 3; 

      // 定義點的每個屬性 

      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){ 

    // 得到屏幕的寬度 

    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++) { 

      //第幾行 

      int row = i/3; 

      //第幾列 

      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); 

    // 遍歷設(shè)置每個子view的大小 

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

      View v = getChildAt(i); 

      v.measure(widthMeasureSpec, heightMeasureSpec); 

    } 

  } 

  

  /** 

   * 保留路徑delayTime時間長 

   * @param delayTime 

   */ 

  public void clearDrawlineState(long delayTime) { 

    gestureDrawline.clearDrawlineState(delayTime); 

  } 

  

}

3.GestureDrawline.java 手勢密碼路徑繪制類

根據(jù)OnTouchEvent方法的不同事件，ACTION_DOWN、ACTION_MOVE、ACTION_UP分別處理不同的邏輯。

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; 

  

/** 

 * 手勢密碼路徑繪制 

 * 

 */ 

public class GestureDrawline extends View { 

  private int mov_x;// 聲明起點坐標 

  private int mov_y; 

  private Paint paint;// 聲明畫筆 

  private Canvas canvas;// 畫布 

  private Bitmap bitmap;// 位圖 

  private List<GesturePoint> list;// 裝有各個view坐標的集合 

  private List<Pair<GesturePoint, GesturePoint>> lineList;// 記錄畫過的線 

  private Map<String, GesturePoint> autoCheckPointMap;// 自動選中的情況點 

  private boolean isDrawEnable = true; // 是否允許繪制 

  

  /** 

   * 屏幕的寬度和高度 

   */ 

  private int[] screenDispaly; 

  

  /** 

   * 手指當(dāng)前在哪個Point內(nèi) 

   */ 

  private GesturePoint currentPoint; 

  /** 

   * 用戶繪圖的回調(diào) 

   */ 

  private GestureCallBack callBack; 

  

  /** 

   * 用戶當(dāng)前繪制的圖形密碼 

   */ 

  private StringBuilder passWordSb; 

  

  /** 

   * 是否為校驗 

   */ 

  private boolean isVerify; 

  

  /** 

   * 用戶傳入的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);// 創(chuàng)建一個畫筆 

    bitmap = Bitmap.createBitmap(screenDispaly[0], screenDispaly[0], Bitmap.Config.ARGB_8888); // 設(shè)置位圖的寬高 

    canvas = new Canvas(); 

    canvas.setBitmap(bitmap); 

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

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

    paint.setColor(Color.rgb(245, 142, 33));// 設(shè)置默認連線顏色 

    paint.setAntiAlias(true);// 不顯示鋸齒 

  

    this.list = list; 

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

  

    initAutoCheckPointMap(); 

    this.callBack = callBack; 

  

    // 初始化密碼緩存 

    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; 

  } 

  

  // 畫位圖 

  @Override 

  protected void onDraw(Canvas canvas) { 

    // super.onDraw(canvas); 

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

  } 

  

  // 觸摸事件 

  @Override 

  public boolean onTouchEvent(MotionEvent event) { 

    if (isDrawEnable == false) { 

      // 當(dāng)期不允許繪制 

      return true; 

    } 

    paint.setColor(Color.rgb(245, 142, 33));// 設(shè)置默認連線顏色 

    switch (event.getAction()) { 

    case MotionEvent.ACTION_DOWN: 

      mov_x = (int) event.getX(); 

      mov_y = (int) event.getY(); 

      // 判斷當(dāng)前點擊的位置是處于哪個點之內(nèi) 

      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);// 畫點 

      invalidate(); 

      break; 

    case MotionEvent.ACTION_MOVE: 

      clearScreenAndDrawList(); 

  

      // 得到當(dāng)前移動位置是處于哪個點內(nèi) 

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

      // 代表當(dāng)前用戶手指處于點與點之前 

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

        return true; 

      } else {// 代表用戶的手指移動到了點上 

        if (currentPoint == null) {// 先判斷當(dāng)前的point是不是為null 

          // 如果為空，那么把手指移動到的點賦值給currentPoint 

          currentPoint = pointAt; 

          // 把currentPoint這個點設(shè)置選中為true; 

          currentPoint.setPointState(Constants.POINT_STATE_SELECTED); 

          passWordSb.append(currentPoint.getNum()); 

        } 

      } 

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

        // 點擊移動區(qū)域不在圓的區(qū)域，或者當(dāng)前點擊的點與當(dāng)前移動到的點的位置相同，或者當(dāng)前點擊的點處于選中狀態(tài) 

        // 那么以當(dāng)前的點中心為起點，以手指移動位置為終點畫線 

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

      } else { 

        // 如果當(dāng)前點擊的點與當(dāng)前移動到的點的位置不同 

        // 那么以前前點的中心為起點，以手移動到的點的位置畫線 

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

        pointAt.setPointState(Constants.POINT_STATE_SELECTED); 

  

        // 判斷是否中間點需要選中 

        GesturePoint betweenPoint = getBetweenCheckPoint(currentPoint, pointAt); 

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

          // 存在中間點并且沒有被選中 

          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()); 

          // 設(shè)置中間點選中 

          betweenPoint.setPointState(Constants.POINT_STATE_SELECTED); 

          // 賦值當(dāng)前的point; 

          currentPoint = pointAt; 

        } else { 

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

          lineList.add(pair); 

          passWordSb.append(pointAt.getNum()); 

          // 賦值當(dāng)前的point; 

          currentPoint = pointAt; 

        } 

      } 

      invalidate(); 

      break; 

    case MotionEvent.ACTION_UP:// 當(dāng)手指抬起的時候 

      if (isVerify) { 

        // 手勢密碼校驗 

        // 清掉屏幕上所有的線，只畫上集合里面保存的線 

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

          // 代表用戶繪制的密碼手勢與傳入的密碼相同 

          callBack.checkedSuccess(); 

        } else { 

          // 用戶繪制的密碼與傳入的密碼不同。 

          callBack.checkedFail(); 

        } 

      } else { 

        callBack.onGestureCodeInput(passWordSb.toString()); 

      } 

      break; 

    default: 

      break; 

    } 

    return true; 

  } 

  

  /** 

   * 指定時間去清除繪制的狀態(tài) 

   * @param delayTime 延遲執(zhí)行時間 

   */ 

  public void clearDrawlineState(long delayTime) { 

    if (delayTime > 0) { 

      // 繪制紅色提示路線 

      isDrawEnable = false; 

      drawErrorPathTip(); 

    } 

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

  } 

  

  /** 

   * 清除繪制狀態(tài)的線程 

   */ 

  final class clearStateRunnable implements Runnable { 

    public void run() { 

      // 重置passWordSb 

      passWordSb = new StringBuilder(); 

      // 清空保存點的集合 

      lineList.clear(); 

      // 重新繪制界面 

      clearScreenAndDrawList(); 

      for (GesturePoint p : list) { 

        p.setPointState(Constants.POINT_STATE_NORMAL); 

      } 

      invalidate(); 

      isDrawEnable = true; 

    } 

  } 

  

  /** 

   * 通過點的位置去集合里面查找這個點是包含在哪個Point里面的 

   * 

   * @param x 

   * @param y 

   * @return 如果沒有找到，則返回null，代表用戶當(dāng)前移動的地方屬于點與點之間 

   */ 

  private GesturePoint getPointAt(int x, int y) { 

  

    for (GesturePoint point : list) { 

      // 先判斷x 

      int leftX = point.getLeftX(); 

      int rightX = point.getRightX(); 

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

        // 如果為假，則跳到下一個對比 

        continue; 

      } 

  

      int topY = point.getTopY(); 

      int bottomY = point.getBottomY(); 

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

        // 如果為假，則跳到下一個對比 

        continue; 

      } 

  

      // 如果執(zhí)行到這，那么說明當(dāng)前點擊的點的位置在遍歷到點的位置這個地方 

      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); 

  } 

  

  /** 

   * 清掉屏幕上所有的線，然后畫出集合里面的線 

   */ 

  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);// 畫線 

    } 

  } 

  

  /** 

   * 校驗錯誤/兩次繪制不一致提示 

   */ 

  private void drawErrorPathTip() { 

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

    paint.setColor(Color.rgb(154, 7, 21));// 設(shè)置默認線路顏色 

    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);// 畫線 

    } 

    invalidate(); 

  } 

  

  public interface GestureCallBack { 

  

    /** 

     * 用戶設(shè)置/輸入了手勢密碼 

     */ 

    public abstract void onGestureCodeInput(String inputCode); 

  

    /** 

     * 代表用戶繪制的密碼與傳入的密碼相同 

     */ 

    public abstract void checkedSuccess(); 

  

    /** 

     * 代表用戶繪制的密碼與傳入的密碼不相同 

     */ 

    public abstract void checkedFail(); 

  } 

  

}

4.GestureEditActivity.java 手勢密碼設(shè)置界面

手勢密碼設(shè)置

代碼如下：

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; 

  

/** 

 * 

 * 手勢密碼設(shè)置界面 

 * 

 */ 

public class GestureEditActivity extends Activity implements OnClickListener { 

  /** 手機號碼*/ 

  public static final String PARAM_PHONE_NUMBER = "PARAM_PHONE_NUMBER"; 

  /** 意圖 */ 

  public static final String PARAM_INTENT_CODE = "PARAM_INTENT_CODE"; 

  /** 首次提示繪制手勢密碼，可以選擇跳過 */ 

  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); 

    // 初始化一個顯示各個點的viewGroup 

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

      @Override 

      public void onGestureCodeInput(String inputCode) { 

        if (!isInputPassValidate(inputCode)) { 

          mTextTip.setText(Html.fromHtml("<font color='#c70c1e'>最少鏈接4個點, 請重新輸入</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, "設(shè)置成功", Toast.LENGTH_SHORT).show(); 

            mGestureContentView.clearDrawlineState(0L); 

            GestureEditActivity.this.finish(); 

          } else { 

            mTextTip.setText(Html.fromHtml("<font color='#c70c1e'>與上一次繪制不一致，請重新繪制</font>")); 

            // 左右移動動畫 

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

            mTextTip.startAnimation(shakeAnimation); 

            // 保持繪制的線，1.5秒后清除 

            mGestureContentView.clearDrawlineState(1300L); 

          } 

        } 

        mIsFirstInput = false; 

      } 

  

      @Override 

      public void checkedSuccess() { 

  

      } 

  

      @Override 

      public void checkedFail() { 

  

      } 

    }); 

    // 設(shè)置手勢解鎖顯示到哪個布局里面 

    mGestureContentView.setParentView(mGestureContainer); 

    updateCodeList(""); 

  } 

  

  private void setUpListeners() { 

    mTextCancel.setOnClickListener(this); 

    mTextReset.setOnClickListener(this); 

  } 

  

  private void updateCodeList(String inputCode) { 

    // 更新選擇的圖案 

    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 手勢密碼校驗界面

代碼如下：

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; 

  

/** 

 * 

 * 手勢繪制/校驗界面 

 * 

 */ 

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

  /** 手機號碼*/ 

  public static final String PARAM_PHONE_NUMBER = "PARAM_PHONE_NUMBER"; 

  /** 意圖 */ 

  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); 

  

    // 初始化一個顯示各個點的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, "密碼正確", 1000).show(); 

            GestureVerifyActivity.this.finish(); 

          } 

  

          @Override 

          public void checkedFail() { 

            mGestureContentView.clearDrawlineState(1300L); 

            mTextTip.setVisibility(View.VISIBLE); 

            mTextTip.setText(Html 

                .fromHtml("<font color='#c70c1e'>密碼錯誤</font>")); 

            // 左右移動動畫 

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

            mTextTip.startAnimation(shakeAnimation); 

          } 

        }); 

    // 設(shè)置手勢解鎖顯示到哪個布局里面 

    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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文章題目：如何在Android應(yīng)用中實現(xiàn)一個手勢密碼功能
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如何在Android應(yīng)用中實現(xiàn)一個手勢密碼功能