本文介紹一個Android手勢密碼開源庫的使用及實作的詳細過程，該開源庫主要實作以下幾個功能：
- 支援手勢密碼的繪制，并支援密碼儲存功能，解鎖時自動比對密碼給出結果
- 封裝了繪制密碼的方法，比對兩次密碼是否一緻，可以快捷地進行手勢密碼的設定
- 可以設定密碼輸入錯誤後的重試次數上限
- 可以自定義不同狀态下手勢密碼圖案的顔色
- 可以自定義手勢密碼的觸摸點數量（n*n）
最近需要用到手勢密碼解鎖功能，找了一些demo感覺用起來都有點麻煩，于是參考一些文章自己造了下輪子，封裝了相關的一些方法，使用起來比較便捷。
github連結如下，覺得還可以請幫忙star支援下~
github連結 https://github.com/autume/GestureLock
個人部落格 http://blog.csdn.net/yaodong379
使用效果
首先看下使用效果：
使用方法
XML布局檔案中使用該控件
<code class="language-java hljs has-numbering"> <com.syd.oden.gesturelock.view.GestureLockViewGroup
android:id=<span class="hljs-string">"@+id/gesturelock"</span>
android:layout_width=<span class="hljs-string">"match_parent"</span>
android:layout_height=<span class="hljs-string">"match_parent"</span>
app:preference_id=<span class="hljs-string">"1"</span>
android:layout_marginTop=<span class="hljs-string">"30dp"</span>
app:count=<span class="hljs-string">"3"</span> /></code>
可以設定的一些參數，說明如下:
color_no_finger:未觸摸時圓形的顔色
color_finger_on:觸摸時圓形的顔色
color_finger_up_correct:輸入正确時圓形的顔色
color_finger_up_error:出錯時圓形的顔色
count：收拾密碼的圓形數量，n*n
preference_id：手勢密碼儲存的id号，不輸入或輸入-1則使用預設的id
初始化
<code class="language-java hljs has-numbering"><span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">initGesture</span>() {
mGestureLockViewGroup = (GestureLockViewGroup) findViewById(R.id.gesturelock);
gestureEventListener();
gesturePasswordSettingListener();
gestureRetryLimitListener();
}</code> 設定手勢密碼監聽事件
<code class="language-java hljs has-numbering"> <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">gestureEventListener</span>() {
mGestureLockViewGroup.setGestureEventListener(<span class="hljs-keyword">new</span> GestureEventListener() {
<span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onGestureEvent</span>(<span class="hljs-keyword">boolean</span> matched) {
mylog.d(<span class="hljs-string">"onGestureEvent matched: "</span> + matched);
<span class="hljs-keyword">if</span> (!matched) {
tv_state.setTextColor(Color.RED);
tv_state.setText(<span class="hljs-string">"手勢密碼錯誤"</span>);
} <span class="hljs-keyword">else</span> {
<span class="hljs-keyword">if</span> (isReset) {
isReset = <span class="hljs-keyword">false</span>;
Toast.makeText(MainActivity.<span class="hljs-keyword">this</span>, <span class="hljs-string">"清除成功!"</span>, Toast.LENGTH_SHORT).show();
resetGesturePattern();
} <span class="hljs-keyword">else</span> {
tv_state.setTextColor(Color.WHITE);
tv_state.setText(<span class="hljs-string">"手勢密碼正确"</span>);
}
}
}
});
}
</code> 若已經設定有密碼則會進入該回調，在這裡對結果進行處理，上面的例子中加入了一個重設密碼的處理。
手勢密碼設定
<code class="language-java hljs has-numbering"> <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">gesturePasswordSettingListener</span>() {
mGestureLockViewGroup.setGesturePasswordSettingListener(<span class="hljs-keyword">new</span> GesturePasswordSettingListener() {
<span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">boolean</span> <span class="hljs-title">onFirstInputComplete</span>(<span class="hljs-keyword">int</span> len) {
<span class="hljs-keyword">if</span> (len > <span class="hljs-number">3</span>) {
tv_state.setTextColor(Color.WHITE);
tv_state.setText(<span class="hljs-string">"再次繪制手勢密碼"</span>);
<span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
} <span class="hljs-keyword">else</span> {
tv_state.setTextColor(Color.RED);
tv_state.setText(<span class="hljs-string">"最少連接配接4個點，請重新輸入!"</span>);
<span class="hljs-keyword">return</span> <span class="hljs-keyword">false</span>;
}
}
<span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onSuccess</span>() {
tv_state.setTextColor(Color.WHITE);
Toast.makeText(MainActivity.<span class="hljs-keyword">this</span>, <span class="hljs-string">"密碼設定成功!"</span>, Toast.LENGTH_SHORT).show();
tv_state.setText(<span class="hljs-string">"請輸入手勢密碼解鎖!"</span>);
}
<span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onFail</span>() {
tv_state.setTextColor(Color.RED);
tv_state.setText(<span class="hljs-string">"與上一次繪制不一緻，請重新繪制"</span>);
}
});
}
</code> 若還未設定密碼，繪制手勢的時候會進入該回調，傳回值為繪制的觸摸點的數量，onFirstInputComplete中傳回true則進入第二手勢密碼的繪制，兩次輸入一緻後自動儲存密碼。
重試次數超過限制監聽
<code class="language-java hljs has-numbering"> <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">gestureRetryLimitListener</span>() {
mGestureLockViewGroup.setGestureUnmatchedExceedListener(<span class="hljs-number">3</span>, <span class="hljs-keyword">new</span> GestureUnmatchedExceedListener() {
<span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onUnmatchedExceedBoundary</span>() {
tv_state.setTextColor(Color.RED);
tv_state.setText(<span class="hljs-string">"錯誤次數過多，請稍後再試!"</span>);
}
});
}
</code> 若設定了該監聽事件，則輸入錯誤有次數限制，超過上限後進入回調，在該回調中進行處理。
清除密碼的邏輯自己加個判斷處理下即可，具體可以看下github上的demo
其他的一些API
public void removePassword() ：清除密碼
public void savePassword() : 儲存密碼，設定手勢密碼成功後會自動儲存，也可以調用該接口另外設定密碼
public void getPassword()： 擷取密碼
public void setRetryTimes(int retryTimes) ： 設定重試次數上限
public boolean isSetPassword() ： 傳回現在是否已經設定有密碼
public void resetView() ： 将視圖Reset
在項目中導入該庫
僅需加入兩行代碼：
在工程的 build.gradle中加入：
<code class="language-java hljs has-numbering">allprojects {
repositories {
...
maven { url <span class="hljs-string">"https://jitpack.io"</span> }
}
}</code>
module的build.gradle中加入依賴：
<code class="language-java hljs has-numbering">dependencies {
compile <span class="hljs-string">'com.github.autume:GestureLock:1.0.0'</span>
}
</code> 總的使用就是這樣，是不是很簡單！
具體實作過程
下面講下實作的過程，如果隻是直接拿來用的話也可以略過這部分。
自定義手勢密碼的圓形view
這部分主要參考Hongyang大大的部落格，稍微修改了一下
初始化傳入參數
<code class="language-java hljs has-numbering"><span class="hljs-keyword">public</span> <span class="hljs-title">GestureLockView</span>(Context context, <span class="hljs-keyword">int</span> colorNoFingerr, <span class="hljs-keyword">int</span> colorFingerOn, <span class="hljs-keyword">int</span> colorCorrect, <span class="hljs-keyword">int</span> colorError) {
<span class="hljs-keyword">super</span>(context);
<span class="hljs-keyword">this</span>.mColorNoFinger = colorNoFingerr;
<span class="hljs-keyword">this</span>.mColorFingerOn = colorFingerOn;
<span class="hljs-keyword">this</span>.mColorFingerUpCorrect = colorCorrect;
<span class="hljs-keyword">this</span>.mColorFingerUpError = colorError;
mPaint = <span class="hljs-keyword">new</span> Paint(Paint.ANTI_ALIAS_FLAG);
mArrowPath = <span class="hljs-keyword">new</span> Path();
}</code>
根據不同的觸摸狀态繪制不同顔色的圓
<code class="language-java hljs has-numbering"> <span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onDraw</span>(Canvas canvas) {
<span class="hljs-keyword">switch</span> (mCurrentStatus) {
<span class="hljs-keyword">case</span> STATUS_FINGER_ON:
<span class="hljs-comment">// 繪制外圓</span>
mPaint.setStyle(Style.STROKE);
mPaint.setColor(mColorFingerOn);
mPaint.setStrokeWidth(<span class="hljs-number">2</span>);
canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);
<span class="hljs-comment">// 繪制内圓</span>
mPaint.setStyle(Style.FILL);
canvas.drawCircle(mCenterX, mCenterY, mRadius * mInnerCircleRadiusRate, mPaint);
<span class="hljs-keyword">break</span>;
<span class="hljs-keyword">case</span> STATUS_FINGER_UP:
<span class="hljs-comment">// 繪制外圓</span>
<span class="hljs-keyword">if</span> (GestureLockViewGroup.isCorrect)
mPaint.setColor(mColorFingerUpCorrect);
<span class="hljs-keyword">else</span>
mPaint.setColor(mColorFingerUpError);
mPaint.setStyle(Style.STROKE);
mPaint.setStrokeWidth(<span class="hljs-number">2</span>);
canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);
<span class="hljs-comment">// 繪制内圓</span>
mPaint.setStyle(Style.FILL);
canvas.drawCircle(mCenterX, mCenterY, mRadius * mInnerCircleRadiusRate, mPaint);
drawArrow(canvas);
<span class="hljs-keyword">break</span>;
<span class="hljs-keyword">case</span> STATUS_NO_FINGER:
<span class="hljs-comment">// 繪制外圓</span>
mPaint.setStyle(Style.STROKE);
mPaint.setColor(mColorNoFinger);
canvas.drawCircle(mCenterX, mCenterY, mRadius, mPaint);
<span class="hljs-comment">// 繪制内圓</span>
mPaint.setStyle(Style.FILL);
mPaint.setColor(mColorNoFinger);
canvas.drawCircle(mCenterX, mCenterY, mRadius * mInnerCircleRadiusRate, mPaint);
<span class="hljs-keyword">break</span>;
}
}
</code> 繪制箭頭
<code class="language-java hljs has-numbering"> <span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onMeasure</span>(<span class="hljs-keyword">int</span> widthMeasureSpec, <span class="hljs-keyword">int</span> heightMeasureSpec) {
<span class="hljs-keyword">super</span>.onMeasure(widthMeasureSpec, heightMeasureSpec);
mWidth = MeasureSpec.getSize(widthMeasureSpec);
mHeight = MeasureSpec.getSize(heightMeasureSpec);
<span class="hljs-comment">// 取長和寬中的小值</span>
mWidth = mWidth < mHeight ? mWidth : mHeight;
mRadius = mCenterX = mCenterY = mWidth / <span class="hljs-number">2</span>;
mRadius -= mStrokeWidth / <span class="hljs-number">2</span>;
<span class="hljs-comment">// 繪制三角形，初始時是個預設箭頭朝上的一個等腰三角形，使用者繪制結束後，根據由兩個GestureLockView決定需要旋轉多少度</span>
<span class="hljs-keyword">float</span> mArrowLength = mWidth / <span class="hljs-number">2</span> * mArrowRate;
mArrowPath.moveTo(mWidth / <span class="hljs-number">2</span>, mStrokeWidth + <span class="hljs-number">2</span>);
mArrowPath.lineTo(mWidth / <span class="hljs-number">2</span> - mArrowLength, mStrokeWidth + <span class="hljs-number">2</span> + mArrowLength);
mArrowPath.lineTo(mWidth / <span class="hljs-number">2</span> + mArrowLength, mStrokeWidth + <span class="hljs-number">2</span> + mArrowLength);
mArrowPath.close();
mArrowPath.setFillType(Path.FillType.WINDING);
}
<span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">drawArrow</span>(Canvas canvas) {
<span class="hljs-keyword">if</span> (mArrowDegree != -<span class="hljs-number">1</span>) {
mPaint.setStyle(Paint.Style.FILL);
canvas.save();
canvas.rotate(mArrowDegree, mCenterX, mCenterY);
canvas.drawPath(mArrowPath, mPaint);
canvas.restore();
}
}
</code> 自定義手勢密碼的ViewGroup
加入自定義view的屬性
<code class="language-java hljs has-numbering"><?xml version=<span class="hljs-string">"1.0"</span> encoding=<span class="hljs-string">"utf-8"</span>?>
<resources>
<attr name=<span class="hljs-string">"color_no_finger"</span> format=<span class="hljs-string">"color"</span> />
<attr name=<span class="hljs-string">"color_finger_on"</span> format=<span class="hljs-string">"color"</span> />
<attr name=<span class="hljs-string">"color_finger_up_correct"</span> format=<span class="hljs-string">"color"</span> />
<attr name=<span class="hljs-string">"color_finger_up_error"</span> format=<span class="hljs-string">"color"</span> />
<attr name=<span class="hljs-string">"count"</span> format=<span class="hljs-string">"integer"</span> />
<attr name=<span class="hljs-string">"preference_id"</span> format=<span class="hljs-string">"integer"</span> />
<declare-styleable name=<span class="hljs-string">"GestureLockViewGroup"</span>>
<attr name=<span class="hljs-string">"color_no_finger"</span> />
<attr name=<span class="hljs-string">"color_finger_on"</span> />
<attr name=<span class="hljs-string">"color_finger_up_correct"</span> />
<attr name=<span class="hljs-string">"color_finger_up_error"</span> />
<attr name=<span class="hljs-string">"count"</span> />
<attr name=<span class="hljs-string">"preference_id"</span> />
</declare-styleable>
</resources>
</code> 擷取參數及初始化
<code class="language-java hljs has-numbering"><span class="hljs-keyword">public</span> <span class="hljs-title">GestureLockViewGroup</span>(Context context, AttributeSet attrs,
<span class="hljs-keyword">int</span> defStyle) {
<span class="hljs-keyword">super</span>(context, attrs, defStyle);
<span class="hljs-javadoc">/**
* 獲得所有自定義的參數的值
*/</span>
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.GestureLockViewGroup, defStyle, <span class="hljs-number">0</span>);
mNoFingerColor = a.getColor(R.styleable.GestureLockViewGroup_color_no_finger, mNoFingerColor);
mFingerOnColor = a.getColor(R.styleable.GestureLockViewGroup_color_finger_on, mFingerOnColor);
mFingerUpColorCorrect = a.getColor(R.styleable.GestureLockViewGroup_color_finger_up_correct, mFingerUpColorCorrect);
mFingerUpColorError = a.getColor(R.styleable.GestureLockViewGroup_color_finger_up_error, mFingerUpColorError);
mCount = a.getInt(R.styleable.GestureLockViewGroup_count, mCount);
mPrferenceId = a.getInt(R.styleable.GestureLockViewGroup_preference_id, mPrferenceId);
a.recycle();
<span class="hljs-javadoc">/**
* 擷取密碼狀态
*/</span>
gesturePreference = <span class="hljs-keyword">new</span> GesturePreference(context, mPrferenceId);
password = gesturePreference.ReadStringPreference();
Log.d(TAG, <span class="hljs-string">"password now is : "</span> + password);
isSetPassword = !password.equals(<span class="hljs-string">"null"</span>); <span class="hljs-comment">//判斷是否已經儲存有密碼</span>
isInPasswordSettingMode = !isSetPassword; <span class="hljs-comment">//當未設定密碼，進入密碼設定模式</span>
<span class="hljs-comment">// 初始化畫筆</span>
mPaint = <span class="hljs-keyword">new</span> Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPath = <span class="hljs-keyword">new</span> Path();
}
</code> 在觸摸監聽中處理不同僚件
<code class="language-java hljs has-numbering"> <span class="hljs-annotation">@Override</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">boolean</span> <span class="hljs-title">onTouchEvent</span>(MotionEvent event) {
<span class="hljs-keyword">int</span> action = event.getAction();
<span class="hljs-keyword">int</span> x = (<span class="hljs-keyword">int</span>) event.getX();
<span class="hljs-keyword">int</span> y = (<span class="hljs-keyword">int</span>) event.getY();
Log.d(TAG, <span class="hljs-string">"mTryTimes : "</span> + mTryTimes);
<span class="hljs-comment">//重試次數超過限制，直接傳回</span>
<span class="hljs-keyword">if</span> (mTryTimes <= <span class="hljs-number">0</span> && isRetryTimeLimit) {
<span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
}
<span class="hljs-keyword">switch</span> (action) {
<span class="hljs-keyword">case</span> MotionEvent.ACTION_DOWN:
reset(); <span class="hljs-comment">// 重置</span>
<span class="hljs-keyword">break</span>;
<span class="hljs-keyword">case</span> MotionEvent.ACTION_MOVE:
drawAndGetSelectedWhenTouchMove(x, y);
<span class="hljs-keyword">break</span>;
<span class="hljs-keyword">case</span> MotionEvent.ACTION_UP:
<span class="hljs-keyword">if</span> (isInPasswordSettingMode) {
<span class="hljs-keyword">if</span> (gesturePasswordSettingListener != <span class="hljs-keyword">null</span>)
setPasswordHandle(); <span class="hljs-comment">//設定密碼</span>
} <span class="hljs-keyword">else</span> {
<span class="hljs-keyword">if</span> (mChoose.size() > <span class="hljs-number">0</span>) {
isCorrect = checkAnswer();
} <span class="hljs-keyword">else</span> {
<span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
}
<span class="hljs-keyword">if</span> (gestureEventListener != <span class="hljs-keyword">null</span>) {
gestureEventListener.onGestureEvent(isCorrect); <span class="hljs-comment">//将結果回調</span>
}
<span class="hljs-keyword">if</span> (<span class="hljs-keyword">this</span>.mTryTimes == <span class="hljs-number">0</span>) {
gestureUnmatchedExceedListener.onUnmatchedExceedBoundary(); <span class="hljs-comment">//超出重試次數，進入回調</span>
}
}
drawWhenTouchUp();
<span class="hljs-keyword">break</span>;
}
invalidate();
<span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
}
<span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">drawAndGetSelectedWhenTouchMove</span>(<span class="hljs-keyword">int</span> x, <span class="hljs-keyword">int</span> y) {
mPaint.setColor(mFingerOnColor);
mPaint.setAlpha(<span class="hljs-number">50</span>);
GestureLockView child = getChildIdByPos(x, y);
<span class="hljs-keyword">if</span> (child != <span class="hljs-keyword">null</span>) {
<span class="hljs-keyword">int</span> cId = child.getId();
<span class="hljs-keyword">if</span> (!mChoose.contains(cId)) {
mChoose.add(cId);
mChooseString = mChooseString + cId;
child.setMode(Mode.STATUS_FINGER_ON);
<span class="hljs-comment">// 設定指引線的起點</span>
mLastPathX = child.getLeft() / <span class="hljs-number">2</span> + child.getRight() / <span class="hljs-number">2</span>;
mLastPathY = child.getTop() / <span class="hljs-number">2</span> + child.getBottom() / <span class="hljs-number">2</span>;
<span class="hljs-keyword">if</span> (mChoose.size() == <span class="hljs-number">1</span>)<span class="hljs-comment">// 目前添加為第一個</span>
{
mPath.moveTo(mLastPathX, mLastPathY);
} <span class="hljs-keyword">else</span>
<span class="hljs-comment">// 非第一個，将兩者使用線連上</span>
{
mPath.lineTo(mLastPathX, mLastPathY);
}
}
}
<span class="hljs-comment">// 指引線的終點</span>
mTmpTarget.x = x;
mTmpTarget.y = y;
}
<span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">drawWhenTouchUp</span>() {
<span class="hljs-keyword">if</span> (isCorrect) {
mPaint.setColor(mFingerUpColorCorrect);
} <span class="hljs-keyword">else</span> {
mPaint.setColor(mFingerUpColorError);
}
mPaint.setAlpha(<span class="hljs-number">50</span>);
Log.d(TAG, <span class="hljs-string">"mChoose = "</span> + mChoose);
<span class="hljs-comment">// 将終點設定位置為起點，即取消指引線</span>
mTmpTarget.x = mLastPathX;
mTmpTarget.y = mLastPathY;
<span class="hljs-comment">// 改變子元素的狀态為UP</span>
setItemModeUp();
<span class="hljs-comment">// 計算每個元素中箭頭需要旋轉的角度</span>
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i + <span class="hljs-number">1</span> < mChoose.size(); i++) {
<span class="hljs-keyword">int</span> childId = mChoose.get(i);
<span class="hljs-keyword">int</span> nextChildId = mChoose.get(i + <span class="hljs-number">1</span>);
GestureLockView startChild = (GestureLockView) findViewById(childId);
GestureLockView nextChild = (GestureLockView) findViewById(nextChildId);
<span class="hljs-keyword">int</span> dx = nextChild.getLeft() - startChild.getLeft();
<span class="hljs-keyword">int</span> dy = nextChild.getTop() - startChild.getTop();
<span class="hljs-comment">// 計算角度</span>
<span class="hljs-keyword">int</span> angle = (<span class="hljs-keyword">int</span>) Math.toDegrees(Math.atan2(dy, dx)) + <span class="hljs-number">90</span>;
startChild.setArrowDegree(angle);
}
}
</code>
設定密碼處理:
<code class="language-java hljs has-numbering"> <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setPasswordHandle</span>() {
<span class="hljs-keyword">if</span> (isWaitForFirstInput) {
<span class="hljs-keyword">if</span> (gesturePasswordSettingListener.onFirstInputComplete(mChooseString.length())) {
firstInputPassword = mChooseString;
isWaitForFirstInput = <span class="hljs-keyword">false</span>;
}
} <span class="hljs-keyword">else</span> {
<span class="hljs-keyword">if</span> (firstInputPassword.equals(mChooseString)) {
gesturePasswordSettingListener.onSuccess();
savePassword(mChooseString);
isInPasswordSettingMode = <span class="hljs-keyword">false</span>;
} <span class="hljs-keyword">else</span> {
gesturePasswordSettingListener.onFail();
}
}
reset();
}
</code> 檢查手勢密碼是否正确:
<code class="language-java hljs has-numbering"> <span class="hljs-keyword">public</span> <span class="hljs-keyword">boolean</span> <span class="hljs-title">checkAnswer</span>() {
<span class="hljs-keyword">if</span> (password.equals(mChooseString)) {
<span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
} <span class="hljs-keyword">else</span> {
<span class="hljs-keyword">if</span> (isRetryTimeLimit)
<span class="hljs-keyword">this</span>.mTryTimes--;
<span class="hljs-keyword">return</span> <span class="hljs-keyword">false</span>;
}
}</code>
重置：
<code class="language-java hljs has-numbering"><span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">reset</span>() {
mChoose.clear();
mChooseString = <span class="hljs-string">""</span>;
mPath.reset();
<span class="hljs-keyword">for</span> (GestureLockView gestureLockView : mGestureLockViews) {
gestureLockView.setMode(Mode.STATUS_NO_FINGER);
gestureLockView.setArrowDegree(-<span class="hljs-number">1</span>);
}
}</code>
對外公開的一些方法
<code class="language-java hljs has-numbering"> <span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setGestureEventListener</span>(GestureEventListener gestureEventListener) {
<span class="hljs-keyword">this</span>.gestureEventListener = gestureEventListener;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setGestureUnmatchedExceedListener</span>(<span class="hljs-keyword">int</span> retryTimes, GestureUnmatchedExceedListener gestureUnmatchedExceedListener) {
isRetryTimeLimit = <span class="hljs-keyword">true</span>;
<span class="hljs-keyword">this</span>.mTryTimes = retryTimes;
<span class="hljs-keyword">this</span>.gestureUnmatchedExceedListener = gestureUnmatchedExceedListener;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setGesturePasswordSettingListener</span>(GesturePasswordSettingListener gesturePasswordSettingListener) {
<span class="hljs-keyword">this</span>.gesturePasswordSettingListener = gesturePasswordSettingListener;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">removePassword</span>() {
gesturePreference.WriteStringPreference(<span class="hljs-string">"null"</span>);
<span class="hljs-keyword">this</span>.isSetPassword = <span class="hljs-keyword">false</span>;
isWaitForFirstInput = <span class="hljs-keyword">true</span>;
isInPasswordSettingMode = <span class="hljs-keyword">true</span>;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">savePassword</span>(String password) {
<span class="hljs-keyword">this</span>.password = password;
gesturePreference.WriteStringPreference(password);
}
<span class="hljs-keyword">public</span> String <span class="hljs-title">getPassword</span>() {
<span class="hljs-keyword">return</span> password;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">resetView</span>() {
reset();
invalidate();
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">setRetryTimes</span>(<span class="hljs-keyword">int</span> retryTimes) {
<span class="hljs-keyword">this</span>.mTryTimes = retryTimes;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">boolean</span> <span class="hljs-title">isSetPassword</span>() {
<span class="hljs-keyword">return</span> isSetPassword;
}
</code> 定義密碼存儲的Preference
就是簡單的存和讀
<code class="language-java hljs has-numbering"><span class="hljs-keyword">public</span> <span class="hljs-title">GesturePreference</span>(Context context, <span class="hljs-keyword">int</span> nameTableId) {
<span class="hljs-keyword">this</span>.context = context;
<span class="hljs-keyword">if</span> (nameTableId != -<span class="hljs-number">1</span>)
<span class="hljs-keyword">this</span>.nameTable = nameTable + nameTableId;
}
<span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">WriteStringPreference</span>(String data) {
SharedPreferences preferences = context.getSharedPreferences(fileName, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString(nameTable, data);
editor.commit();
}
<span class="hljs-keyword">public</span> String <span class="hljs-title">ReadStringPreference</span>() {
SharedPreferences preferences = context.getSharedPreferences(fileName, Context.MODE_PRIVATE);
<span class="hljs-keyword">return</span> preferences.getString(nameTable, <span class="hljs-string">"null"</span>);
}
</code> 總結
ok，至此，整個手勢密碼的實作就完成了。
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