尝试环境：
Android2.2（源码） SDK
android-ndk-r7
尝试在NDK下面使用C语言做Android的SQLite3数据库存储功能。做了如下尝试：
在Android的源代码中找到sqlite3.h和libsqlite.so拷贝到NDK的lib（D:\android\android-ndk-r7-linux\platforms\android-3\arch-arm\usr\lib）和include（D:\android\android-ndk-r7-linux\platforms\android-3\arch-arm\usr\include）目录下。
测试代码：
1 /* -- START -- */ 2 /* 3 *代码借用：http://www.cnblogs.com/sardine/archive/2011/07/30/2121853.html 4 */ 5 #include <sqlite3.h> 6 #include <stdio.h> 7 8 static int _sql_callback(void * notused, int argc, char ** argv, char ** szColName) 9 { 10 int i; 11 for ( i=0; i < argc; i++ ) 12 { 13 printf( "%s = %s\n", *szColName, argv == 0 ? "NUL" : *argv ); 14 } 15 return 0; 16 } 17 18 19 int main() 20 { 21 const char * sSQL1 = "create table users(userid varchar(20) PRIMARY KEY,age int,regtime datetime);"; 22 const char * sSQL2 = "insert into users values('guilh',29,'2009-7-16');"; 23 const char * sSQL3 = "select * from users;"; 24 25 sqlite3 * db = 0; 26 char * pErrMsg = 0; 27 28 int ret = 0; 29 const char* const dbname = "gtest.db"; 30 31 //打开数据库，如果数据库不存在，会建立一个数据库 32 ret = sqlite3_open(dbname, &db); 33 34 if ( ret != SQLITE_OK ) 35 { 36 printf("open error! : %s", sqlite3_errmsg(db)); 37 return(1); 38 } 39 40 printf("open db OK!\n"); 41 42 // 执行建表SQL 43 sqlite3_exec( db, sSQL1, 0, 0, &pErrMsg ); 44 if ( ret != SQLITE_OK ) 45 { 46 //fprintf(stderr, "SQL error: %s\n", pErrMsg); 47 printf("SQL error: %s\n", pErrMsg); 48 sqlite3_free(pErrMsg); 49 } 50 51 // 执行插入记录SQL 52 sqlite3_exec( db, sSQL2, 0, 0, &pErrMsg); 53 54 // 查询数据表 55 sqlite3_exec( db, sSQL3, _sql_callback, 0, &pErrMsg); 56 57 // 关闭数据库 58 sqlite3_close(db); 59 db = 0; 60 61 return 0; 62 }
Android.mk: Android的make文件
1 #### START #### 2 LOCAL_PATH:= $(call my-dir) 3 4 include $(CLEAR_VARS) 5 #include $(LOCAL_PATH)/../config.mk 6 7 LOCAL_SRC_FILES:= test.cpp 8 9 10 LOCAL_LDLIBS := -lcutils -licuuc -licui18n -lutils -licudata -lsqlite 11 12 13 #LOCAL_PRELINK_MODULE := false 14 15 LOCAL_MODULE := sqlite3 16 17 include $(BUILD_EXECUTABLE) 18 19 ### END ###
如果此时直接编译的话会有如下提示：
1 $ make APP=sqlite3 2 Android NDK: Building for application 'sqlite3' 3 Executable : sqlite3 4 D:/android/android-ndk-r7-linux/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/http://www.cnblogs.com/http://www.cnblogs.com/arm-linux-androideabi/bin/ld.exe: warning: libicuuc.so, needed by ./platforms/android-3/arch-arm/usr/lib/libsqlite.so, not found (try using -rpath or -rpath-link) 5 D:/android/android-ndk-r7-linux/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/http://www.cnblogs.com/http://www.cnblogs.com/arm-linux-androideabi/bin/ld.exe: warning: libicui18n.so, needed by ./platforms/android-3/arch-arm/usr/lib/libsqlite.so, not found (try using -rpath or -rpath-link) 6 D:/android/android-ndk-r7-linux/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/http://www.cnblogs.com/http://www.cnblogs.com/arm-linux-androideabi/bin/ld.exe: warning: libutils.so, needed by ./platforms/android-3/arch-arm/usr/lib/libsqlite.so, not found (try using -rpath or -rpath-link) 7 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_getShortDefinitionString_4_2' 8 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_close_4_2' 9 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `utf32_to_utf8' 10 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_open_4_2' 11 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `unorm_next_4_2' 12 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `u_isalpha_4_2' 13 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_strcollIter_4_2' 14 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_getSortKey_4_2' 15 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `utf8_length_from_utf32' 16 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `utf8_appendCharSafeBody_4_2' 17 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_strcoll_4_2' 18 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `utf8_length' 19 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `uiter_setUTF8_4_2' 20 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `u_toupper_4_2' 21 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `u_strtok_r_4_2' 22 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `utf32_at' 23 ./platforms/android-3/arch-arm/usr/lib/libsqlite.so: undefined reference to `ucol_setAttribute_4_2' 24 collect2: ld returned 1 exit status 25 build/core/build-binary.mk:324: recipe for target `out/apps/sqlite3/armeabi/sqlite3' failed 26 make: *** [out/apps/sqlite3/armeabi/sqlite3] Error 1
按照上面提示，依次从目标环境（源码或是你手机中）拷贝libcutils.so libicuuc.so libicui18n.so libutils.so libicudata.so到NDK的lib目录（见上）下。
如果出现如下错误：
1 $ make APP=sqlite3 2 Android NDK: Building for application 'sqlite3' 3 Executable : sqlite3 4 ./platforms/android-3/arch-arm/usr/lib/libcutils.so: undefined reference to `ioprio_set' 5 ./platforms/android-3/arch-arm/usr/lib/libicuuc.so: undefined reference to `mbstowcs' 6 ./platforms/android-3/arch-arm/usr/lib/libcutils.so: undefined reference to `ioprio_get' 7 ./platforms/android-3/arch-arm/usr/lib/libicuuc.so: undefined reference to `wcstombs' 8 collect2: ld returned 1 exit status 9 build/core/build-binary.mk:324: recipe for target `out/apps/sqlite3/armeabi/sqlite3' failed 10 make: *** [out/apps/sqlite3/armeabi/sqlite3] Error 1
拷贝目标环境的libc.so替换掉你开发环境里面的。
执行结果如下：
1 # ./sqlite3 2 ./sqlite3 3 open db OK! 4 userid = guilh 5 userid = guilh 6 userid = guilh
生成的数据库如下：
整个测试项目源代码：SQLite3.rar
数据库里面的regtime不对，是应该sql语句里面的时间不对。改下就ok：
1 const char * sSQL2 = "insert into users values('guilh',29,'2012-12-30 00:00:00');";