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POInclude sqlite database into a C++ JNI project
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  1. POInclude sqlite database into a C++ JNI project
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    copied!<p>I've written my C++ classes and now I have to create the library to use them on android. One classes handles a database, which I've prepared in advance (it includes pictures and strings). In Qt it works fine, so the code is robust. I have my Android project in Eclipse, the JNI seems to be OK, since on runtime android does NOT crash. The problem is that the database misses. </p> <p>Can someone tell me how to include it into the project in such a way that it will be included by building the apk file? Have seen a tutorial which explains to put it into the assets folder and creates an extended Java class, but I don't know if it works also when i0m using the query calls on the JNI level (in C++).</p> <p>As I sad before, I have no errors, neither by compiling, nor by running time. The application simply doesn't work... because there is no database. When I leave the definition of the native methods blank, it does not crash, so it means the the call to the native method works fine.</p> <p>An Example, in the C++ class I have: </p> <pre><code>bool Database::open() { if (sqlite3_open(dataBaseName, &amp;databaseConnection) == SQLITE_OK){ return true; } return false; } </code></pre> <p>I call it with the native call: </p> <pre><code>JNIEXPORT void JNICALL Java_com_tamagotchi_ItemShop_openDatabase(JNIEnv *, jobject){ db-&gt;open(); } </code></pre> <p>... On the java class: </p> <pre><code>static { System.loadLibrary("nativeLib"); } public native void openDatabase(); </code></pre> <hr> <p>UPDATE: I've seen an example where the database is included in the assets folder, and the the file is accessible using getResources().getAssets().open("some_file"). The problem is that this is for the Java side, but i don't nedd to access it from the Java side, i need to access it from the C++/JNI side using the nativelibrary.</p>
 

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