方便的統計行數

find . -name *.java -type f -exec cat {} \; | wc -l

Android "insufficient permissions for device "

當使用USB連接到device的時候，出現了"insufficient permissions for device
", 下面是我的做法:
$ sudo -s
$ ./adb kill-server
$ ./adb start-server

接下來就可成功連接到device了

檔案分割與合併

分割
split -b size file_name prefix.
split -b 1m phrase.db phrase.

合併
cat prefix.a* > file_name
cat phrase.a* > phrase.db

JarFile


JarFile jar = new JarFile(file);

// get file entry from the JarFile
JarEntry entry = jar.getJarEntry("file_name");

// get file stream to prepare parsing this file
InputStream input = jar.getInputStream(entry);


Build Image Language

append this line "PRODUCT_LOCALES := zh_TW en_GB es_US ja"[...other local
language] at end of [top-dir]/build/target/product/generic.mk if compiling
generic, note,zh_TW must be first position

PRODUCT_LOCALES := \
en_US \
de_DE \
zh_CN \
ru_RU \



reference:
http://pdk.android.com/online-pdk/guide/index.html
http://www.johandekoning.nl/index.php/2009/06/08/building-android-15-building-the-source/