Related
Ok... I know I'm not one of the elite here, but I've been a PPC Admin creating custom ROMs with kitchens for a number of devices for the last 4-5 years. I love this site and everyone here has done an excellent job developing for our devices, but its time we organize this site to make it easy for noobs to get involved in our world. The big problem I see when I try to help people get into WinMo is that its really hard for them to find the right apps and previews of what is possible to do. The biggest complaint I have from friends who use this site is that there are often different threads for the same app and often they download the older version by mistake. I also see what happens to developers like A_C who have their apps ripped off and sold as a "bundle of freeware apps". Its wrong and I'd hate to see him or any of the other developers not get credit for their hard work.
So here is what I'm proposing... Why don't we create an app store right here where free and for pay apps can conveniently and easily be searched and organized. We could even setup rss feeds for the different applications so people could be notified when a new version or even a update to the thread has occurred. I know Microsoft is coming out with their app store, but come on. when have they gotten anything right for a community at this level of capability right at the start?
Either way.. I think it would be a great idea for us to build this and expand the Win Mo community. Thanks everyone for your hard work.
Feel free to comment.
Using RSS from a new sub-forum that XDA could setup would allow a dev to pull the threads and information. If they're formatted properly before submitted to the App Store forum, the first post in the thread could be App's description and preview including any youtube previews. The second post would have the cab file.
There would also be a string of text in the first post which would define device compatibilities so Raphael users don't try and download Kaiser specific software and vice-versa
A pre-approval process would take place in a seperate forum and PPC veterans and forum senior members could assist in evaluating the posts as well as the software?
I see a more community based solution in this idea. Very nice. BUT.. will it happen? I'm no longer in the programming side of the biz, but if someone could come up with an app that would take the RSS from a forum, I could setup a test forum on a site I run just for proof of concept. Anyone interested?
Sounds like a great idea! I think a forum isnt the best solution for the matter but at least there would be some kind of order...
(App2Date support for more programs would be helpful then as well)
I only say forum because this database is already in place, easily tweaked (I run a few vBulletin sites so I know how easy it can be) and the authors can update their applications easily without having to reinvent the wheel from the ground up. With the proper required fields we could easily organize everything nicely
http://forum.xda-developers.com/showthread.php?t=488610
okay that sounds better.. im not experimenting with forums much
is is possible to filter things then? i cant really picture it
when i look for an app i always download all available of a kind (e.g. 5 minesweeper) and in the end not even 1 works ^^
http://forum.xda-developers.com/showthread.php?t=480476
http://forum.xda-developers.com/showthread.php?t=436127
why not have 3 more...
i think before u can update ur apps u first need 2 download them... and in order to do that u need to find them first and thats what this thread is mainly about
have u ever heard about apple app store? its not about selling devices whatsoever but to FIND SOFTWARE (easily)
Yep, there are a few being built already, but maybe a more "Official" one would get more development and community support?
Here's another one too: http://forum.xda-developers.com/showthread.php?t=471576
I'd really like to see one of these Appstore ideas to also track UI customizations. I can't tell you the number of hours I've spent reading through hundreds of posts to find the perfect SPB Mobile Shell UI... lol.
I have tried all of the above mentioned 'portals' and I use DeviceUpdate, but it's the same 97 or 98 apps! This would be a direct tie-in to this site. Developers could submit their apps to the community for approval and they'd be moved into the proper section of the app 'vault' and would instantly be available in the Mobile Application which would generate its list via a direct RSS of the App Vault forum..
Why create a new database and userbase when XDA's is already so huge?
I second, third and forth this request. XDA dev's deserve a store for app releases and use the forum as a dev/feedback forum.. Vbulletin can only do so much... If revenue sharing is the major hurdle I would hope the webmaster can work out an agreement with the devs who want to submit apps. Another hurdle could potentially be copyright infringements.. Unofficial ROM's and other promoted/sold "clone-apps" could bring unwanted publicity to the site. This simple chaotic forum might be the perfect element to keep XDA under the corporate radar and safe from hungry lawyers.
norkoastal said:
I second, third and forth this request. XDA dev's deserve a store for app releases and use the forum as a dev/feedback forum.. Vbulletin can only do so much... If revenue sharing is the major hurdle I would hope the webmaster can work out an agreement with the devs who want to submit apps. Another hurdle could potentially be copyright infringements.. Unofficial ROM's and other promoted/sold "clone-apps" could bring unwanted publicity to the site. This simple chaotic forum might be the perfect element to keep XDA under the corporate radar and safe from hungry lawyers.
Click to expand...
Click to collapse
I disagree that 'vbulletin can only do so much'.. XDA-Developers.com even uses a basic 'stock' theme.. this site isn't customized very much and is a very basic implementation of the software. An app on the phones that pull the information from a sub forum of this site could load up previews, videos and the download links. If you want to add in 'dontation' links, that's also possible, but I think that's better left to PCs.
I agree that staying 'under the radar' is essential, but being able to access all of the software that can greatly improve your device from anywhere at a moments notice is key... I'm currently browsing to a forum on my phone to get a piece of software and it's taking at least 3 minutes to do it when I can get there in less than 10 seconds on the PC.. put this stuff in an app and I won't even need the PC other than to find the dev and discussion threads....
I see vBulletin in a different light from just a chat enabler.. but it might be because I know the back end so well.
l3it3r said:
I disagree that 'vbulletin can only do so much'.. XDA-Developers.com even uses a basic 'stock' theme.. this site isn't customized very much and is a very basic implementation of the software. An app on the phones that pull the information from a sub forum of this site could load up previews, videos and the download links. If you want to add in 'dontation' links, that's also possible, but I think that's better left to PCs.
I agree that staying 'under the radar' is essential, but being able to access all of the software that can greatly improve your device from anywhere at a moments notice is key... I'm currently browsing to a forum on my phone to get a piece of software and it's taking at least 3 minutes to do it when I can get there in less than 10 seconds on the PC.. put this stuff in an app and I won't even need the PC other than to find the dev and discussion threads....
I see vBulletin in a different light from just a chat enabler.. but it might be because I know the back end so well.
Click to expand...
Click to collapse
All valid points, but if the webmaster has no desire to expand this sites complexity, who are we to say add this n that when we are typing on a yellow/brown forum with minimal VB enhancements (no knock to XDA ).
What I see working is XDA allow a spin-off site which is the visual/functional app paradise we all crave.. The alter ego of Cydia and the evil empire. All discussion/dev related questions feed to their respective XDA threads. XDA mods can then port the data to XDA-apps when they feel the release is deemed safe. Developers who want more press/ad exposure pony up $$, and can then charge for more fully functioning software... I dont think anyone doesn't want an app store, its will you get official XDA muscle behind it?
There's a way to charge for threads, so if people want to sell the apps, they need to buy a premium spot for it on the XDA App listing.. *boom!* XDA is interested!
If a spin-off site is required, then that's cool, I'd be really interested in assisting with it. It would be possible to use the same user database.
Thanks everyone for opening feedback on this topic. I think we should look further into finding a way to make this happen. Any volunteers? l3it3r and Norkoastal have done a good job in taking the lead on this so far. How do you feel about making it happen Norkoastal andl3it3r's?
I would recommend getting some official support from XDA before beginning to compile resources for this effort. I really think there should be input from the owner/mods here who want to see this happen, & also get their take on maintaining the upkeep of this proposed rollout. I would be glad to throw my two pesos in, but wouldn't want to step on any toes or other efforts already in process, namely gecko..
I will be releasing a new more complete version of this very soon. Its a freewarepocketpc.net client working off the existing database online.
That's sweet! I use fwppc all the time because it's easy to navigate on the phone. I still think that XDA is the #1 name in Windows mobile development and that we could truly shine, but what if we were able to come up with a publicly agreed standard for thread creation down to the descriptions and layouts. Could you tie in an RSS feed from an XDA forum into that?
That's exactly what I was thinking l3it3r. A standardization for this site that is just setup for apps. If rss feeds were tied into it anyone could build an app that could go out and find the latest updates for their subscribed applications. Noobs wouldn't know about the applications used for downloading apps, but would know generally how to view a web forum. Its all about making it easier for the noobs to get interested in exploring the capabilities of WM and not to intimidate them. A good standardization of the layout would go a long way to expanding the user base and increase interest in our work.
What do you guys think?
With all things considered, I think it is better if this is done as a separate site as Napbree has done for finger friendly apps (http://forum.xda-developers.com/showthread.php?t=380748).
So if any legal issues should arise or site adjustments/enhancements that needs to be made, it can be dealt independently from XDA. This also can bring apps from other places into attention that isn't developed within XDA.
The forum in question is Honda-tech.com. A honda enthusiast forum (the largest of its kind). Lots and lots of users on there who would love to access the site through an app and benefit from not having to go through their mobile browsers. A large diversity of iOS and Android users as well.
The topic of an app has been discussed on the forum plenty of times but no one has taken the initiative to actually look into getting one made. I though I would post on the dev site(s) to see if anyone would like to create an app. I am somewhat adept at the Android OS but not so much as far as app dev goes. I have no clue as to how hard this task would be, however if anyone is interested in creating something like this please let me know and maybe we can get this ball rolling.
Also, tapatalk has been discussed but an app is preferred.
Thanks guys.
problem solved
I'm planning on attempting to make a forum app for bungie.net once done shouldn't be hard to adapt to other forums.
Won't be as fast as tapatalk bc I assume they use a custom spy, y they need form support. Could be wrong. Tapatalk is a nice app.
I made a site a while ago that basically works the same way as tapatalk, but with more functionality so it would function like an app you launched through your browser. You can filter out images, specific people, set the OP to be in a separate column, and more. Since it was a website it used cURL so the initial load was rather slow but it also caches all of the pages locally and on the server so load times were pretty minimal after the first grab. It doesn't require any modification on the forum's end but it only reads vBulletin as of now (it could probably be adapted though). I haven't checked, but it should work for any mobile device with a decent browser (Android, iOS, Opera Mobile 10+) and it could possibly be made into an app. This was part of a large project I was working on but got burnt out on so I am not sure what all needs to be finished. PM me if that is interesting.
I would love to see an example of this, it doesnt have to be made into an app, if it functions in browser would be good enough. Porting over to an app would require alot of work, tho the logic would be helpful.
+1 for honda tech app...
Make one for socalcivic.com also..
Ep3
Would love to see a forum app for http://ubuntuforums.org/ also, so would a lot of other people:
http://ubuntuforums.org/showthread.php?t=1513906
Hey there, I am looking for a dev to help me realise a dream I have of making a multi-lingual picture decorating program. If you have ever been to Japan or Korea, you know that the picture sticker booths are madly popular amoung people under 20. I think that with the huge android base in korea and the sparking android community in japan, this app has potential to be incredibly successful. I already have friends in japan and korea who could help with information and of course they have agreed on translating everything.
If you think you could be good at developing a program like this, I would love to work with you!
Thanks.
Sent from my Vibrant using the XDA for Android app.
Nobody's interested? Really?
Hi,
What working arrangement do you propose?
What features do you envision for this application?
I am a dev always looking for projects.
Thanks,
Barry.
Well, I would like to work very closely with the developer (I'm a dev of sorts too so I know how important it is to work closely with the "customer"). I would be very specific as to how things should look and work. I'm almost always available, too, so the project should progress quickly. At first, I'd just like a working English version of the program, and Korean and Japanese versions could be built after (since I'm assuming your preferred language is English). Anywho, I am thinking that this App would be a paid app (no good place for advertisements) and I feel that the Dev and I could split any revenue 50/50 (I think this app could sell a minimum of 10k copies... though I'm an optimist).
I hope that answered your first question. Let me know if I misconstrued.
Features? Without getting into too much detail on the public board, I would like it to be able to take pictures from the gallery (and to have camera access) and then do something like this to them.
http://img16.imageshack.us/img16/7927/purikurahikuwhole.jpg
Thanks for your time and consideration. I hope you'll take on the project!
canalrun?
Anybody else? Come on this will be fun!
Perhaps you can do it yourself in app inventor
XDA App
TheRedDrake said:
Perhaps you can do it yourself in app inventor
XDA App
Click to expand...
Click to collapse
probably not. I just dont have the time to play around in an environment i am not overly familiar with. Thats why i would like to work with a more experienced android programmer/developer.
Still open for takers...
There are tutorials for it, and app inventor is almost foolproof. I've done a Talking Tom app in less then a day.
Xda app
Hey I am a longtime fan of XDA, it has been a cornerstone of the phone hacking and app development scene for years. I was looking through the threads and noticed an app development program that had been picking up steam and even released a private beta was closed. This thread if anyone was wonder is the WP7 Android suite by TheRedDrake. It seems as though there was some strife with the mods and they have moved off site to "wp7android.com". I was wondering what caused this and why an app development cycle that was making headway towards a market release got banned? I hope someone can explain this to me because I think if there is some policy against projects like this why does this forum exist if not to mod and release apps that we can all enjoy? I don’t want to incite any anger, I am just genuinely curious about what happened and why.
The answer to your question can be found in the last post of the thread:
http://forum.xda-developers.com/showpost.php?p=13290726&postcount=930
The developers have no intention of providing the passwords or removing them, so the project has moved off of XDA and is now entirely maintained on their website, wp7android.com. From what I know, the thread had been closed and re-opened at least once before as well.
bear831 said:
Hey I am a longtime fan of XDA, it has been a cornerstone of the phone hacking and app development scene for years. I was looking through the threads and noticed an app development program that had been picking up steam and even released a private beta was closed. This thread if anyone was wonder is the WP7 Android suite by TheRedDrake. It seems as though there was some strife with the mods and they have moved off site to "wp7android.com". I was wondering what caused this and why an app development cycle that was making headway towards a market release got banned? I hope someone can explain this to me because I think if there is some policy against projects like this why does this forum exist if not to mod and release apps that we can all enjoy? I don’t want to incite any anger, I am just genuinely curious about what happened and why.
Click to expand...
Click to collapse
Its simple, they were violating forum rules. Its unfortunately, but the expectations for developer threads have been very clearly hashed out by the Admins of this site, and TheRedDrake didn't abide by them, and instead tried to use a loophole. Fortunately they managed to get a different site, because project is a cool one, but they should have just opened their own site in the first place since they knew they had no intentions of abiding the rules.
Seems cool but it was definitely the right move. If they p/w protect rar's guess they wanna charge? Not sure how many Android heads are going to pay for win7 to replace a better OS (IMO) with more programs, especially when there's a great launcher that's customizable and spot on to 7. Maybe a dual boot but not for this guy. I can't remember what that launcher is called but it looked nice if I didn't love Android so I'd have dl'ed it ^_^ goog " window phone 7 Android launcher " I'm sure it was here on xda (free-donate if u like it), if it sounds like something you'd like. Cheers
Sent from my MB860 using XDA App
dubyajaysmith said:
Seems cool but it was definitely the right move. If they p/w protect rar's guess they wanna charge? Not sure how many Android heads are going to pay for win7 to replace a better OS (IMO) with more programs, especially when there's a great launcher that's customizable and spot on to 7. Maybe a dual boot but not for this guy. I can't remember what that launcher is called but it looked nice if I didn't love Android so I'd have dl'ed it ^_^ goog " window phone 7 Android launcher " I'm sure it was here on xda (free-donate if u like it), if it sounds like something you'd like. Cheers
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
To be fair, their project was a hell of a lot more than a launcher. They basically built an Android equivalent to WP7 from scratch, including the Zune player.
WP7Android project is one of the best projects. As it is aiming to change the whole UI of android to WP7, not just the UI. They are also working on apps for the gallery, mail, dialer, camera, browser.. and more than i can't remember right now. It's going to be a big project!
The project has been moved from XDA to the WP7Android forum. You can check out their website where they have all the details about this project, you can also donate if you want to get access to all the beta apps. www.wp7android.com
I donated to TheRedDrake at the start of this project, and i have no comments on all the apps they provide, they are really great (Considering they are still in Beta stage..) also, donating helps the devs and keeps the project alive, and keeps the process of it going along the way.
http://twitter.com/#!/TheRedDrake
Donations that were made for this project made it possible and made it exist. Not free apps or lite versions. There are already versions of other WP7 styled apps not part of this project that have as much features as a lite version. I understand the devs not wanting to waste their time on making lite versions.
As i have read, the three apps that TheRedDrake wanted to make them free, will not be free anymore, and this is because the mods of XDA closed the thread of this project..
ms7p said:
WP7Android project is one of the best projects. As it is aiming to change the whole UI of android to WP7, not just the UI. They are also working on apps for the gallery, mail, dialer, camera, browser.. and more than i can't remember right now. It's going to be a big project!
The project has been moved from XDA to the WP7Android forum. You can check out their website where they have all the details about this project, you can also donate if you want to get access to all the beta apps. www.wp7android.com
I donated to TheRedDrake at the start of this project, and i have no comments on all the apps they provide, they are really great (Considering they are still in Beta stage..) also, donating helps the devs and keeps the project alive, and keeps the process of it going along the way.
http://twitter.com/#!/TheRedDrake
Donations that were made for this project made it possible and made it exist. Not free apps or lite versions. There are already versions of other WP7 styled apps not part of this project that have as much features as a lite version. I understand the devs not wanting to waste their time on making lite versions.
As i have read, the three apps that TheRedDrake wanted to make them free, will not be free anymore, and this is because the mods of XDA closed the thread of this project..
Click to expand...
Click to collapse
Nice to see someone is supporting me. People like him bring my project to life
Well since the original topic was closed I have to explain here somethings:
Q: Why do you password protect the rar files?
A: I said that only contributors are allowed. If you help this project in some useful way I will grant access. This means everybody could enter if they helped.
Q:Why don't you post free apps? .....or lite versions?
A:For first question go to previous Q&A, for second it goes like this: we won't spend time making any sort of lite versions. There are already apps in the market by other developers not involved in the project that have the same amount of features as a lite version.
Q:Why don't you obey the XDA forums rules like all devs do?
A:I do obey them but putting the apps for free just because of that ain't going to do. As I already said if you help you can get them for free.
Q:You know people get frustrated by your policy. Many devs offer apps for free. What do you say about that?
A: True they do. But many devs don't offer their work for free. Not all in this world is for free and most quality software is paid. You should realize that.
Q:Are you still going to release 3 apps for free for XDA users?
A:No, maybe for our forum users 1-2 apps.
Q:Have you any intention of trying to reopen the thread?
A:No, it has been moved to the official site forum at http://www.wp7android.com
Q:Are you in any way upset at the moderators for closing the original thread?
A:Nope, not at all. I understand why they did this. It is their job to make sure XDA forum rules are followed by everybody even if sometimes those rules are nonsense.
Q:There have been similar devs who got kicked from XDA from the same reason. Are you aware of them?
A: Yes Ultralinx is such case. Banned from trying to sell his work. Well he is sympathetic to our cause and offered free advertising on his site. I'm certain he is angry at the XDA mods.
Q:Finaly what do you think of the XDA policy of free apps?
A:Here is one example: SPB Shell beta apk was available here even if it was a closed beta and SPB didn't permit the apk to be freely distributed.The moderators didn't do anythin about it. I will let you judge by yourself this one.
Everyone should definitely join the new forum we just launched . We also started a Facebook fan page the other day . http://www.google.com
There is some absolutely fantastic work being done by everyone . As stated above , this isnt just a launcher . This is going to be the whole enchilada . If you're a fan of the UI , then this project is for you .
We are all very excited to be doing this , and this is NOT something that will be dropped and no longer supported ( like most of the other wp7-like apps ).
We are in it for the long haul . Join us for the ride . We are going to start having prize giveaways , developer blog spots , etc.
One of our devs will be presenting our project at the Happy Go Techy Expo in Seattle.
We still have much work to do , but this is one of the few UI overhauls here at XDA where progress is actually being made and YOU can be a part of it . Thanks to everyone that has already helped and has joined our rapidly growing community .
Don't forget, http://www.google.com/
Join the forums and let us know YOUR thoughts . Thank you .
put you ads somewhere else... hope you get banned from xda for that.
@dubyajaysmith agreed!
As someone who was critical initially, I want to say that I've donated to the project. TheRedDrake has returned personal PMs to him, and I think my concerns have been put at ease.
The last thing I think anyone wants to do is lose good devs in the Android community. After learning some more about the work behind the scenes, I'm definitely supporting this project.
I partially agree with the decision to close the old thread. Yes, it is a bit against the rules, but some other devs are putting non-free non-lite apps here too, and their thread won't get closed. The WP7 team was working hard on the whole stuff, I've been able to take a look at their source, and help them here and there, and I have to say, what they did, is pretty impressive.
The Zune Player is almost ready, the Launcher looks good as it is, functional, works as it should. Everything else is in order, and the whole pack will definitely worth the money they ask for it.
The whole UI is being replaced, and hopefully it will extend to some other applications too (currently the Contacts app is finished, the Zune Player, Messaging, Launcher has work on it AFAIK, and the others are being written too, I have no further info on it though).
I think the mods need to calm down and get over themselves. There are developers who are doing the same thing they accused TheRedDrake of who haven't had their threads taken down. That just makes the mods seem as though they are immature and play favorites to projects they personally like. I love XDA, but when they take unjust actions like I just described, it disappoints me to see them contradict their own definition of a developer community.
TheRedDrake said:
Q:Why don't you post free apps? .....or lite versions?
A:For first question go to previous Q&A, for second it goes like this: we won't spend time making any sort of lite versions. There are already apps in the market by other developers not involved in the project that have the same amount of features as a lite version.
Click to expand...
Click to collapse
So why exactly did you release a lite version of the wp7launcher now in the market?
Glad you did it though...
Launcher7 is way better than this launcher...
Shadewalkerz said:
Launcher7 is way better than this launcher...
Click to expand...
Click to collapse
You made that determination from a lite version? And how about the zune, email, and dialer apps?
Your last two posts have been awesome .. I'm sure you're third will be just as good. No reason to hate man, move along if you don't like our work .. that's very disrespectful.
Sent from my SCH-I500 using XDA App
Appear then Disappear
Why was it pulled off the market (lite)? it was there yesterday but now its not...
I did get to try it out though... LWP didn't work for me and there was no add widgets button when I press the menu button on my phone.... personally its just like L7 not to dog the hard work people put into this (I really would like to see how this project turns out) its just an opinion.
Yeah there are Widgets, multiple home screens, live tiles, folders, etc that weren't in the lite version.
We pulled it from the market because in less than 24 hours it was up on the warez (piracy) sites.
We are putting security in place before we put anything back on the market. Good thing it was a really stripped down version
Thanks for the support. We are all spending crazy amounts of time on this.
Sent from my SCH-I500 using XDA App
lucas.scott said:
Yeah there are Widgets, multiple home screens, live tiles, folders, etc that weren't in the lite version.
We pulled it from the market because in less than 24 hours it was up on the warez (piracy) sites.
We are putting security in place before we put anything back on the market. Good thing it was a really stripped down version
Thanks for the support. We are all spending crazy amounts of time on this.
Click to expand...
Click to collapse
Good Call don't want all of the hard work to be wasted on pirates, Could you give an estimate how much It would cost... the whole package meaning
Can't really give that just yet ... we are bouncing around ideas .. bundled prices and stuff. We are working on an aosp rom, that we would like to include everything and be themed and such, just trying to decide what makes sense still.
Sent from my SCH-I500 using XDA App
We should have the paid apps in the market in one week or less. Cheers!
Sam's teach your self android development in 24 hours?
Sent from my Nexus S 5g.
I have purchased this book, Android Wireless Application Development, its a pretty good book. For me personally, no book or no course could ever teach me anything in 24hrs, I need to practice with examples to get the hang of things. While trying to develop I found online is actually better than most books.
Stackoverflow (Android) has been a great resource for me, as well as the Android Developers site. Sorry I am new here so I can post links, but you can google them.
I have used SAM's books before, and they have been OK.
I agree with spawn782 though, I found online resources were better than any book. Stakoverflow is great if you run into problems.
The ones you find in Comp Sci college classes
Head First Java is a great book for beginners. You won't get bored at all.
Sent from my SGH-T959 using XDA App
I read a couple of books. by far the for dummies book and wrox's beginning android are the best..
Which one?
How do you think Professional Android 4 Application Development (Wrox Professional Guides) and Pro Android 4 (Professional Apress) would compare? I am considering purchasing one of these. I have heard good stuff about them both... Has anybody had both of them?
Search Internet and developerandroid.com,
Jrcon said:
Search Internet and developerandroid.com,
Click to expand...
Click to collapse
I tried googling for a comparison of the two books, but I was unable to find one. Maybe it was only the lack of proper search terms.
Now that you said about it, I remember seeing a book list on the android developers page, but can't find it now...
Sent from my Nexus S using xda app-developers app
So nobody has bought both of them? Maybe I'll just buy the more expensive one(not big difference), and wish it's also the better one
Sent from my Nexus S using xda app-developers app
Hi,i think referring online forums is the best way to learn android.Can somebody suggest some book,website to teach myself android developement...