How to covert UTF8 string to UTF16 in JNI

Posted by Er Rahul Rajkumar Gupta on Stack Overflow See other posts from Stack Overflow or by Er Rahul Rajkumar Gupta
Published on 2013-10-19T09:52:38Z Indexed on 2013/10/19 9:53 UTC
Read the original article Hit count: 320

Filed under:

Can anyone please tell me that what is going on wrong with me in this code.Actually in following line of codes I am taking the path of sdcard in a string in jni (C code) and in concatenate function concatenating these manually using loop.The string returned by concatenate works fine but when I am converting it to jstring it prints garbage value in my logcat. Kindly tell me what is the problem.

 jstring str=(jstring)env->CallObjectMethod(sdcard,storagestring);
    const char    jclass cfile=env->FindClass("java/io/File");
    jmethodID fileid=env->GetMethodID(cfile,"<init>","(Ljava/lang/String;)V");
    jclass envir=env->FindClass("android/os/Environment");
        jmethodID storageid=env->GetStaticMethodID(envir,"getExternalStorageDirectory","()Ljava/io/File;");
        jobject sdcard=env->CallStaticObjectMethod(envir,storageid);
        jclass sdc=env->GetObjectClass(sdcard);
        jmethodID storagestring=env->GetMethodID(sdc,"toString","()Ljava/lang/String;");

         *nativeString = env->GetStringUTFChars(str, 0);
     char *s =concatenate(nativeString,"/f1.3gp");
        //fpath=s;
        fpath=env->NewStringUTF(s);
    jobject fobject=env->NewObject(cfile,fileid,fpath);
    LOGI("size of char=%d size of string=%d",sizeof("/f1.3gp"),sizeof(fpath));
    jmethodID existid=env->GetMethodID(cfile,"exists","()Z");
    if(env->CallBooleanMethod(fobject,existid))
    {
     jmethodID delid=env->GetMethodID(cfile,"delete","()Z");
     if(env->CallBooleanMethod(fobject,delid))
     LOGE("File is deleting...%s",env->NewStringUTF("/f1.3gp"));
    }
    jmethodID newfileid=env->GetMethodID(cfile,"createNewFile","()Z");
    if(env->CallBooleanMethod(fobject,newfileid))
        LOGE("dig dig %s",fpath);
    jthrowable exc=env->ExceptionOccurred();
    if(exc)
    {
     env->ExceptionDescribe();
     env->ExceptionClear();
    }
    LOGE("creating file %s",fpath);
    }

© Stack Overflow or respective owner

Related posts about jni