Android仿支付宝手势密码解锁功能

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<lockpatternview.cell> 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<lockpatternview.cell> 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。