sebfisch

#!/bin/bash

# Replaces classes in Android Package Files
# (c) Sebastian Fischer, CC-BY

# Can be used to rebuild an App with a modified version of a used library,
# as required for closed works that link to an LGPL library.

# Depends on: https://code.google.com/p/dex2jar/

cmelchior

// Make a custom Gson instance, with a custom TypeAdapter for each wrapper object.
// In this instance we only have RealmList<RealmInt> as a a wrapper for RealmList<Integer>
Type token = new TypeToken<RealmList<RealmInt>>(){}.getType();
Gson gson = new GsonBuilder()
        .setExclusionStrategies(new ExclusionStrategy() {
            @Override
            public boolean shouldSkipField(FieldAttributes f) {
                return f.getDeclaringClass().equals(RealmObject.class);
            }

aliang228

import android.content.Context;
import android.content.res.Resources;

public class MResource {
	
	private static int getResID(Context context, String resName, String defType) {
		 Resources res = context.getResources();		
		 return res.getIdentifier(resName, defType, context.getPackageName());
	}
	

djspiewak

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea