Starting

创建手势密码可以查看 CreateGestureActivity.java 文件.

登陆验证手势密码可以看 GestureLoginActivity.java 文件.

Features

使用了 JakeWharton/butterknife butterknife

使用了 ACache 来存储手势密码

/**

* 保存手势密码

*/

private void saveChosenPattern(List cells)

{

byte[] bytes = LockPatternUtil.patternToHash(cells);

aCache.put(Constant.GESTURE_PASSWORD, bytes);

}

Warning:使用 ACache 类保存密码并不是无限期的. 具体期限可以查看 ACache 类.

使用了 SHA 算法保存手势密码

/**

* Generate an SHA-1 hash for the pattern.

* Not the most secure, but it is at

* least a second level of protection. First level is that the file is in a

* location only readable by the system process.*

* @param pattern

* @return the hash of the pattern in a byte array.

*/

public static byte[] patternToHash(List pattern)

{

if (pattern == null) {

return null;

} else {

int size = pattern.size();

byte[] res = new byte[size];

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

LockPatternView.Cell cell = pattern.get(i);

res[i] = (byte) cell.getIndex();

}

MessageDigest md = null;

try {

md = MessageDigest.getInstance("SHA-1");

return md.digest(res);

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

return res;

}

}

}

可以开启震动模式，当选中一个圈的时候，手机会震动

/** * Set whether the view will use tactile feedback.

*If true, there will be

* tactile feedback as the user enters the pattern.

* @param tactileFeedbackEnabled Whether tactile feedback is enabled

*/

public void setTactileFeedbackEnabled(boolean tactileFeedbackEnabled) {

mEnableHapticFeedback = tactileFeedbackEnabled;

}

可以开启绘制路径隐藏模式

/**

* Set whether the view is in stealth mode. If true, there will be no

* visible feedback as the user enters the pattern.

* @param inStealthMode Whether in stealth mode.

*/public void setInStealthMode(boolean inStealthMode) {

mInStealthMode = inStealthMode;

}

Example

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持找一找教程网。