public static Object newInstanceOf(String className) {
try {
Class<?> clazz = Class.forName(className);
if (clazz != null) {
return newInstanceOf(clazz);
}
} catch (ClassNotFoundException e) {
}
return null;
}
/** This method is called by SDL using JNI. */
public InputStream openAPKExtensionInputStream(String fileName) throws IOException {
// Get a ZipResourceFile representing a merger of both the main and patch files
if (expansionFile == null) {
Integer mainVersion =
Integer.valueOf(nativeGetHint("SDL_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION"));
Integer patchVersion =
Integer.valueOf(nativeGetHint("SDL_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION"));
try {
// To avoid direct dependency on Google APK extension library that is
// not a part of Android SDK we access it using reflection
expansionFile =
Class.forName("com.android.vending.expansion.zipfile.APKExpansionSupport")
.getMethod("getAPKExpansionZipFile", Context.class, int.class, int.class)
.invoke(null, this, mainVersion, patchVersion);
expansionFileMethod = expansionFile.getClass().getMethod("getInputStream", String.class);
} catch (Exception ex) {
ex.printStackTrace();
expansionFile = null;
expansionFileMethod = null;
}
}
// Get an input stream for a known file inside the expansion file ZIPs
InputStream fileStream;
try {
fileStream = (InputStream) expansionFileMethod.invoke(expansionFile, fileName);
} catch (Exception ex) {
ex.printStackTrace();
fileStream = null;
}
if (fileStream == null) {
throw new IOException();
}
return fileStream;
}