android 自定义随机键盘全键般随机，字母+数字+标点符号都随机

android 随机键盘（全键盘随机，字母+数字+标点符号都随机）。这个是全键盘都随机哦，不像某些资源分享的那样，只随机数字或只随机字母。跟网银的一样。 同时，解决了光标的问题。

/** Automatically generated file. DO NOT MODIFY */
package cn.key;

public final class BuildConfig {
    public final static boolean DEBUG = true;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2015-01-15 08:58  keydemo\
     文件         475  2015-01-15 08:58  keydemo\.classpath
     文件         843  2015-01-15 08:58  keydemo\.project
     目录           0  2015-01-15 08:58  keydemo\.settings\
     文件          57  2015-01-15 08:58  keydemo\.settings\org.eclipse.core.resources.prefs
     文件         726  2015-01-15 08:58  keydemo\AndroidManifest.xml
     目录           0  2015-01-15 08:58  keydemo\assets\
     目录           0  2015-01-15 08:58  keydemo\bin\
     文件         726  2015-01-15 08:58  keydemo\bin\AndroidManifest.xml
     目录           0  2015-01-15 08:58  keydemo\bin\classes\
     目录           0  2015-01-15 08:58  keydemo\bin\classes\cn\
     目录           0  2015-01-15 08:58  keydemo\bin\classes\cn\key\
     文件         321  2015-01-15 08:58  keydemo\bin\classes\cn\key\BuildConfig.class
     文件         854  2015-01-15 08:58  keydemo\bin\classes\cn\key\KeyModel.class
     文件        2927  2015-01-15 08:58  keydemo\bin\classes\cn\key\KeyboardUtil$1.class
     文件        8610  2015-01-15 08:58  keydemo\bin\classes\cn\key\KeyboardUtil.class
     文件        1196  2015-01-15 08:58  keydemo\bin\classes\cn\key\KeydemoActivity$1.class
     文件        2492  2015-01-15 08:58  keydemo\bin\classes\cn\key\KeydemoActivity.class
     文件         304  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$attr.class
     文件        2214  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$color.class
     文件         361  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$dimen.class
     文件         894  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$drawable.class
     文件         383  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$id.class
     文件         358  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$layout.class
     文件         391  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$string.class
     文件         419  2015-01-15 08:58  keydemo\bin\classes\cn\key\R$xml.class
     文件         551  2015-01-15 08:58  keydemo\bin\classes\cn\key\R.class
     目录           0  2015-01-15 08:58  keydemo\bin\res\
     目录           0  2015-01-15 08:58  keydemo\gen\
     目录           0  2015-01-15 08:58  keydemo\gen\cn\
     目录           0  2015-01-15 08:58  keydemo\gen\cn\key\
............此处省略42个文件信息