SDL.java
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package org.libsdl.app;
import android.content.Context;
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import java.lang.reflect.*;
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/**
SDL library initialization
*/
public class SDL {
// This function should be called first and sets up the native code
// so it can call into the Java classes
public static void setupJNI() {
SDLActivity.nativeSetupJNI();
SDLAudioManager.nativeSetupJNI();
SDLControllerManager.nativeSetupJNI();
}
// This function should be called each time the activity is started
public static void initialize() {
setContext(null);
SDLActivity.initialize();
SDLAudioManager.initialize();
SDLControllerManager.initialize();
}
// This function stores the current activity (SDL or not)
public static void setContext(Context context) {
mContext = context;
}
public static Context getContext() {
return mContext;
}
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public static void loadLibrary(String libraryName) throws UnsatisfiedLinkError, SecurityException, NullPointerException {
if (libraryName == null) {
throw new NullPointerException("No library name provided.");
}
try {
// Let's see if we have ReLinker available in the project. This is necessary for
// some projects that have huge numbers of local libraries bundled, and thus may
// trip a bug in Android's native library loader which ReLinker works around. (If
// loadLibrary works properly, ReLinker will simply use the normal Android method
// internally.)
//
// To use ReLinker, just add it as a dependency. For more information, see
// https://github.com/KeepSafe/ReLinker for ReLinker's repository.
//
Class relinkClass = mContext.getClassLoader().loadClass("com.getkeepsafe.relinker.ReLinker");
Class relinkListenerClass = mContext.getClassLoader().loadClass("com.getkeepsafe.relinker.ReLinker$LoadListener");
Class contextClass = mContext.getClassLoader().loadClass("android.content.Context");
Class stringClass = mContext.getClassLoader().loadClass("java.lang.String");
// Get a 'force' instance of the ReLinker, so we can ensure libraries are reinstalled if
// they've changed during updates.
Method forceMethod = relinkClass.getDeclaredMethod("force");
Object relinkInstance = forceMethod.invoke(null);
Class relinkInstanceClass = relinkInstance.getClass();
// Actually load the library!
Method loadMethod = relinkInstanceClass.getDeclaredMethod("loadLibrary", contextClass, stringClass, stringClass, relinkListenerClass);
loadMethod.invoke(relinkInstance, mContext, libraryName, null, null);
}
catch (final Exception e) {
// Fall back
try {
System.loadLibrary(libraryName);
}
catch (final UnsatisfiedLinkError ule) {
throw ule;
}
catch (final SecurityException se) {
throw se;
}
}
}
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protected static Context mContext;
}