Joy of Think

===Aapt When I research multiple locale support, I found that aapt is a great tool which can used to dump internal information of apk file.

For exmple, aapt dump configurations apk_name can dump all the configuration used built in apk file.

===Locale support AssertManager.getLocales() will invoke jni code in AssertManager.cpp, it will invoke ResTable.getLocales() in 'ResourceTypes.cpp`. This method will check all the avaliable configuration and figure out which kinds locales are supported.

The first method is to use "content://sms/{sms_id}", but unfortunately, this metod doesn't work due to a unknown reason.

The workable solution is to use uri "content://sms", and use condition "id = {smsid}". It can delete SMS from inbox.

Based on the code of

Just copy this code in your C file, and uses LOG? to print out log.

#include <android/log.h>

#define  LOG_TAG    "SCWS"
#define  LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
#define  LOGW(...)  __android_log_print(ANDROID_LOG_WARN,LOG_TAG,__VA_ARGS__)
#define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)

Today, I fixed two stupid defects in my JNI code.

First one, I notice that return java string always contain a extra character, finally, it is caused by a mistake in my code: put 0 in [length+1] instead of [length]. VERY STUPID.

Second one, I notice the output of string is not correct. I write unicode string literatelly from txt file of windows notepad. At end, I found that java always uses Big Endian utf-16, but windows notpad using Little Endian utf-16.