LatinIME默認打開各國語言

1、 frameworks\base\packages\SettingsProvider\res\values\defaults.xml 

<string name="def_input_methods">com.android.inputmethod.latin/.LatinIME;529847764;-921088104</string>

增加英文和泰文輸入法,android/packages/inputmethods/LatinIME/java/res/xml/method.xml中有定義的
-921088104;529847764分別代表en_US和th

2、frameworks\base\packages\SettingsProvider\src\com\android\providers\settings\DatabaseHelper.java

loadStringSetting(stmt, Settings.Secure.ENABLED_INPUT_METHODS, R.string.def_input_methods);