All of the pictures on this website was taken from source that we believe as "Public Domain", If you want to claim your image please Contact Us
Home »Android Programming »Android Programming

Android Programming

cad systems help february 2013

cad systems help february 2013

What Basic Understanding Of Java Is Required For Android, Android Tutorial Android Programming Basics Xml Java, Make Your Learning Effective With 24x7 On Demand Tech, Adds Kotlin As An Official Programming Language For, Best Websites To Learn Android Programming Education And, 5 Essential Things To About Android Programming, Basic4android Screenshots, The Complete Android Development Classes And Courses E, Android Programming Android Apps On Play, Android Studio Android Programming Tutorial For Beginners

The realm of know-how continues to move massively as well as almost every day time, possibly just about every next modify, persons are fighting in order to have no age group and then utilize it not knowing the time, The discovery from the android the device will cause a difference regarding state of mind as it, additionally, features a good style and has quite a few state-of-the-art uses which they can use for many human being routines, either learners, entrepreneurs and in many cases growers, android solutions are commonly used seeing that something to generate money very effectively.

prior to most people remove regarding issues below, most people display images

cad systems help february 2013

, perform take into account can be the contribution, in the interests of the actual you surviving of this web, plus we thanks to you in your kindness. mainly because your world wide web focuses for attracting for the background pattern, Regarding various types of Android smartphone which has been circulating absolutely have got diverse, needs subject to kind in addition to brand name, thus if you would like get, information about How you can Select a Superior Android and also quality is critical, so we have what we should want. Even though not very good no less than you are aware of some crucial recommendations that need considering just before getting the android smartphone:

1. smartphone brand that has been famous.

How to find beneficial android,primary, you need to be aware the emblem associated with the product alone, meaning the actual smartphone anyone as it has to be distinct brand and when you can buy a phone completely from this art gallery model, do this to ensure if you experience an issue with your current smartphone, you are able to straight visit the actual mobile art gallery must the android problem.

2. GPU.

The important thing so that you can opt for a beneficial android secondly May be the GPU, This GPU works as a images regulator over a smartphone, for instance smartphone image present, a casino game perspective, or even a relevant video gambler see, The more effective the particular GPU for a phone, the higher a artwork quality.

3. CPU.

The main element within choosing the up coming good android, observe the CPU, as it can in your personal computer, The following CPU functions as a regulator or May be brain on the android.

4. RAM.

In deciding on the RAM to test at the least 1GB, this kind of is in order to hold the regarding the device, though it May be working multitasking by means of the person, or you can just use RAM Adder App for a phone.

5. Battery.

How to choose a beneficial android prolonged and also 5th is usually within the battery pack, because a smartphone \'s power supply is equivalent to a life, Go with a smartphone which has at the least 2000mAh electric batteries, technology-not only for years, You May also read through this A lot of Productive Number of Most up-to-date Battery power Life.

6. World-wide-web network.

The true secret throughout choosing a beneficial android number 6 is ?? the web circle, The following circle posseses an crucial functionality to carry out world wide web browsing, A person can make android multi-level HSDPA and also LTE.

7. Camera.

The camera is also an important point purchasing a excellent and sturdy android, particularly if you would like take important occasions in your daily life, in particular if you love selfie, deciding upon a mobile phone with an above average photographic camera is a priority, Along with for great android dslr camera cellphone need to attend least 5 MP.

8. Display

And also points to note prior to you buying a fantastic android is actually to the display or perhaps tv screen, pick how big is a tv screen as required, Tend not to pick out a telephone screen featuring a big sizing simply because will probably be inconvenient, nonetheless not small mainly because it will be tricky if you keying, To the excellence of the display, we recommend that witout a doubt put on kind IPS, and has multitouch feature.

If we learn the right the best android, it wouldn 't injure united states to master a variety of companies engaged in generating smartphones, from that point located a sophisticated smartphone, complex smartphone and the best-selling smartphone on the globe market place, a great number of companies with smartphones are usually moving around the world: Htc, Vivo, TCL Alcatel, ZTE, LG, Lenovo ,Motorola, Htc as well as other brands, although will probably like research the particular 5 best-selling smartphone corporations in the world market :

1. APPLE, Inc.

previously referred to as Apple company Pc, Inc. a company based in Plastic Valley, Cupertino, Ca, which happens to be engaged in computer products, Apple company made it simpler for to begin with the pc trend from the 1970s, having its product Apple company II plus enhance it considering that the 80s to date using Macintosh, Apple is famous for it is components generation, like the iMac, MacBook, iPod songs person gadget, as well as iPhone cell phone. A number of the program projects can compete in the inventive field, including Remaining Cut Expert video publisher, Reasoning Professional player seem writer as well as iTunes melody gambler in addition to functioning because an internet based music store.

Considering it is 1st launch regarding flagship smartphone, commencing in the age group involving iPhone 3G as of yet, this tech lovers with this American-based organization, stay dedicated make use of iPhone products via down the family, towards the newest.

Apple inc iPhone Smartphone is regarded as a premium products that has a relatively high-priced price tag, Even though their rivals be competitive to have affordable smartphones, The apple company still controls the value, together with top quality possessed for every item, pertaining to clients which are quite excited about this specific Apple company company smartphone production, usually do not go through the price tag problem, as he features dropped excited about the functions introduced by Apple \'s smartphone.

Among the advantages with the iPhone smartphone will be the software and the software created by Apple inc by itself, The apple company message or calls software package iOS, that 's firm steadiness and satisfaction, When comparing some other application this sort of since it 's main take on Android, actually iPhone computer hardware is extremely conventional, however by making use of software which is superb, iPhone smartphone is extremely dependable inside the process of serious purposes plus game titles though. In addition purposes and video game titles applied inside the iPhone smartphone had been already made especially because of its individual IOS.

Moreover, iPhone features some other Fascinating Attributes for example supply will allow you to fee easily, Up to date iOS 11 main system inside now offers assistance with regard to Increased Simple fact know-how and will assure your complete multitasking pursuits, going without getting a hitch.

Apple inc products and release yr :

iPhone Jun 29, 2007. iPhone 3G July/07 11, 2008. iPhone 3GS 6 19, 2009 . iPhone 4 6 24, 2010. iPhone 4S 10 14, 2011 . iPhone 5 Sept/9September/09 21, 2012. iPhone 5S September 20, 2013. iPhone 5C 9 20, 2013. iPhone 6 Sept 19, 2014. iPhone 6 PLUS 09 19, 2014. iPhone 6s Sept/09 25, 2015. iPhone 6s PlusSept 25 , 2015. iPhone SE March/03 31, 2016. iPhone 7 Sept/09 16, 2016. iPhone 7 Plus Sept/09 16, 2016. iPhone X November 3, 2017. iPhone 8 & iPhone 8 Plus 9 15, 2017.


Sony is surely an Android-based smartphone model that always carries in the market, This kind of ginseng dwelling place carries a very immediate progress, particularly if presenting the Android os in this handset in the product, doing New samsung has a myriad of uses that keep the comfort plus excitement involving the employment of smart phones.

Moreover, the value presented is likewise fairly considerably less expensive than the iPhone, This is exactly what tends to make Straight talk samsung considerably sought like a smartphone associated with preference, especially could be the Galaxy string, among Samsung \'s top quality merchandise series along with selling available in the market, and also get Straight talk revenue continue on to, Think of it as this smartphone items Galaxy S8 along with S8 promoted a little while ago, having an exclusive pattern as well as the operation regarding a fast processor chip, This kind of prosperous Check out the sales additionally held by your incessant commercials of which seem in the news television an internet-based media.

Do you know, the actual good the actual beginning regarding Samsung..?? 1st operates its enterprise creating samsung ramen intsan as well as various dried meal, Check out the endured because 1938 inside of a hamlet named Check out the in Southerly Korea, Sony commenced severely creating HP. Throughout 1999, Samsung \'s 1st success within the smartphone globe started off in April/4 27, 2009, In those days, Samsung brought out it has the primary Android cellphone the Sony i7500, This specific phone gives AMOLED touch screen measuring 3.2 inches width, OS employed during this cell phone is definitely Android OS Cupcake 1.5.

Samsung products along with release yr :

Samsung i8510 INNOV8 Sept/09, 2008. Samsung Galaxy i7500 June/06, 2009. Samsung Galaxy S 3, 2010. Samsung Galaxy S Plus 04, 2011. Samsung Galaxy S II 04 27, 2011. Samsung Galaxy S III 5 29, 2012. Samsung Galaxy S III Mini Oct 11, 2012. Samsung Galaxy S Advance April, 2012. Samsung Galaxy S II Plus 2, 2013. Samsung Galaxy S4 04 27, 2013. Samsung Galaxy S4 Zoom Jun/06, 2013. Samsung Galaxy S4 Mini 4 26, 2013. Samsung Galaxy S4 Active Jun 21, 2013. Samsung Galaxy S III Neo June, 2014. Samsung Galaxy S5 4 11, 2014. Samsung Galaxy K Zoom 04, 2014. Samsung Galaxy S5 Mini April/04 11, 2014. Samsung Galaxy S5 Active April 11, 2014. Samsung Galaxy S5 Neo 2 1, 2014. Samsung Galaxy S6, S6 Edge dan S6 Edge+ 04 10, 2015. Samsung Galaxy S6 Active Jun/06 12, 2015. Samsung Galaxy S7 dan S7 Edge March/3 11, 2016. Samsung Galaxy S7 Active 3 12, 2016. Samsung Galaxy S8 dan S8 Plus April 21, 2017. Samsung Galaxy J Dec/12, 201 Samsung Galaxy J1 Feb, 2015. Samsung Galaxy J2 prime Nov/11, 2016. Samsung Galaxy J2 Oct/10, 2017. Samsung Galaxy J3 pro June, 2016. Samsung Galaxy J3 6, 2017. Samsung Galaxy J5 prime Jul, 2016. Samsung Galaxy J7 prime September, 2016. Samsung Galaxy J5 June/06, 2017. Samsung Galaxy J7 Jun, 2017. Samsung Galaxy J7 max 06, 2017. Samsung Galaxy J7 Pro Jun, 2017. Samsung Galaxy J7+ Sept/9September/09/09}') }}, 2017. Samsung Galaxy Note Oct, 2011. Samsung Galaxy Note II September 2012. Samsung Galaxy Note 8.0 4 11, 2013. Samsung Galaxy Note 3 09 4, 2014. Samsung Galaxy Note 3 neo Jan, 2014. Samsung Galaxy Note 4 Sept/9September/09 3, 2014. Samsung Galaxy Note 5 08 13, 2015. Samsung Galaxy Note 7 8 19, 2016. Samsung Galaxy Note Fan Edition (FE) Jul/07 7,2017. Samsung Galaxy Note 8 Sept/09 23, 2017. Samsung Galaxy A Samsung Galaxy C Samsung Galaxy ON Samsung Galaxy Tab.

3. OPPO.

OPPO can be a digital service agency plus world-wide engineering that literally brings the modern cell electronics plus the most advanced with more than 21 places, like the Joined Expresses, The far east, Quotes as well as other places throughout The european countries, Southeast Parts of asia, To the south Japan, the particular Midsection Eastern side and Africa. OPPO attempts to produce the very best cellphone encounter by means of very careful style and design and also wise technology.

Because it has the business with 2004, OPPO is striving to have this specific ideology to its consumers round the world. Soon after correctly coming into this cell phone sector with 2008, OPPO did start to unfurl it has the BUSINESS on the global market place inside 2010 and opened it has the world small business in my ballet shoes around 4 2010 within Thailand. OPPO aims so that you can do the particular latest technology, the biggest program high quality standards, and also comprehend the very best person encounter, consumers can get the particular most efficient and complicated merchandise out of set out to finish. A doctrine in the OPPO product is actually made clear in this sentence: \'Ale technological know-how \'This kind of phrase delivers the business rule regarding honesty, integrity, and also honesty .OPPO it isn 't just regular inside trying to do the right things, Using the assistance involving purchaser or perhaps service centre formal OPPO, a sensational scene to fret anymore, if perhaps sooner or later there is problems for smpphone oppo. You possibly can visit closest Support Center.

The OPPO company products and also release year :

Oppo Find 5 mini 02,2013. Oppo N1 Dec/12 10, 2013. Oppo Yoyo May, 2014. Oppo Find 7 dan 7a04 , 2014. Oppo N1 mini Dec 10, 2013. Oppo N3 Jan , 2014. Oppo Neo 3 Aug/8 , 2014. Oppo R5 December, 2014. Oppo Mirror 3 March/3, 2015. Oppo Neo 5 08, 2015. Oppo Neo 7 October/10, 2015. Oppo R1x Jan/01, 2015. Oppo R7 / R7 Plus May/05, 2015. Oppo R7 Lite October/10, 2015. Oppo R7s December/12, 2015. Oppo Mirror 5 08, 2015. Oppo Mirror 5s August , 2015. Oppo Joy Plus 5, 2015. Oppo Joy 3 June/06 , 2015. Oppo Joy 3s 01 , 2016. Oppo F1 February, 2016. Oppo A37 Jun , 2016. Oppo A39 Dec/12 , 2016. Oppo F1s August/08, 2016. Oppo F1s Black edition 12, 2016. Oppo F1 02 2016. Oppo F1 Plus April/04 , 2016. Oppo F1s Jul , 2016. Oppo A37 Jun/6 , 2016. Oppo A39 October, 2016. Oppo R9s Dec/12 2016. Oppo F3 March 23, 2017. Oppo F3 Plus March/03 23, 2017. Oppo R11 Jun, 2017. Oppo R11 plus 6, 2017.


who is not knowledgeable about the goods and this smartphone gadget, using its redmi series, Xiaomi Incorporated is known 05 be known|is understood|is recognized}') }} almost to every one edges regarding Parts of asia as well as the earth, Xiaomi \'s private label originates from Mandarin, specifically \'little rice \', CEO Lei Jun declared Xiaomi wishes for you to use smaller points, definitely not get started from your huge things, While \'mi \'signifies \'Cell phone World wide web \'as well as \'Vision Out of the question \'because right after developing Xiaomi, there are several obstacles this usually are difficult to deal with, as well moment.

Xiaomi is a private gadgets firm coming from Tiongkok which had been recognized in Jun/06 6, 2010, headquartered with The far east, Beijing who have the particular goal and eye-sight to create the person practical knowledge to all aspects. tag heuer offers quickly become one of many fastest & main technological innovation businesses inside Cina, Xiaomi will be the last most significant Smartphone distributor inside Globe that will patterns, grows and markets Smartphones, Cellular apps, and also Purchaser Electronics, xiaomi released the first smartphone in Aug/8 2011.

Xiaomi mackintosh products and also release yr :

Xiaomi Mi Augl/08 1, 2011. Xiaomi Mi 1S August, 2012. Xiaomi Mi 2 Augl/08, 2013. Xiaomi Mi 2S 04, 2013. Xiaomi Mi 2A May, 2013. Xiaomi Redmi 2 August|08|8|Aug|Augl/08|Aug/8|August/08}') }}, 2013. Xiaomi Mi 3 Dec/12, 2013. Xiaomi Redmi Note 03 17, 2014. Xiaomi Redmi 1S May/5, 2014. Xiaomi Redmi Note 03, 2014. Xiaomi Mi Pad 7.9 Jun/6, 2014. Xiaomi Mi 4 Augl/08, 2014. Xiaomi Redmi Note 4G Aug/8, 2014. Xiaomi Redmi Note 4G Aug/8 ,2014. Xiaomi Mi 4 LTE Dec/12 2014. Xiaomi Redmi 2 January,2015. Xiaomi Redmi 2A 04, 2015. Xiaomi Mi Note 01, 2015. Xiaomi Mi Note Pro 05, 2015. Xiaomi Mi 4i April/04, 2015. Xiaomi Redmi 2 Prime August, 2015. Xiaomi Redmi Note 2 October, 2015. Xiaomi Mi 4c 09, 2015. Xiaomi Redmi Note 3MediaTek, 11 2015. Xiaomi Mi Pad 2 November, 2015. Xiaomi Mi 4s March, 2016. Xiaomi Redmi 3 Jan, 2016. Xiaomi Redmi Note Prime 12, 2015. Xiaomi Redmi Note 3 Feb, 2016. Xiaomi Mi Max 5, 2016. Xiaomi Mi 5 April/4 , 2016. Xiaomi Redmi 3 Pro 4, 2016. Xiaomi Redmi 3s 6 ,2016. Xiaomi Redmi 3s Prime August/08, 2016. Xiaomi Redmi 3x July/07, 2016. Xiaomi Redmi Note 4 Augl/08, 2016. Xiaomi Redmi Pro August, 2016. Xiaomi Mi 5s Oct/10, 2016. Xiaomi Mi 5s Plus 10, 2016. Xiaomi Mi Note 2 November, 2016. Xiaomi Mi Mix November, 2016. Xiaomi Redmi 4 Prime 11, 2016. Xiaomi Redmi 4 Nov/11, 2016. Xiaomi Redmi 4A Nov, 2016. Xiaomi Redmi Note 4 Jan, 2017. Xiaomi Redmi Note 4X Feb, 2017. Xiaomi Mi 5c March, 2017. Xiaomi Mi 6 April 19, 2017. Xiaomi Redmi 4 (4X) 05 ,2017. Xiaomi Mi Max 2 06, 2017. Xiaomi Redmi Y1 Lite 11, 2017. Xiaomi Mi A1 Sept/9September/09, 2017. Xiaomi Mi Mix 2 9, 2017. Xiaomi Mi Note 3 9, 2017. Xiaomi Redmi Y1Note 5A Nov 2017. Xiaomi Redmi 5 December, 2017. Xiaomi Redmi 5 Plus Dec, 2017. Xiaomi Redmi 5A December, 2017.


Huawei is a mobile phone business company and also telecommunication that was well-known considering 1987, This particular Far east business possesses presented a variety of exceptional smartphone products and solutions, quite a few turn out Respect collection, Ymca string, Delaware sequence, Lover collection, Climb sequence, and plenty of more.This merchant starts goods regarding the requirements of various marketplace gives, ranging from the marketplace regarding upper-class culture to help the lower middle class that provides in the marketplace .Huawei goods who have this specific enhanced target audience ,Huawei P10 plus P10 As well as have been released a bit of time back, to get example. Huawei solutions which May have this kind of enhanced potential audience, transporting an obvious and sharpened screen res, high quality effectiveness and also a very ready processor. the more entire the design is likewise sophisticated in addition to sleek. This specific quality brings P10 and also P10 Plus correctly sold in a market.

Huawei mackintosh products plus release yr :

Huawei Honor 6 10 ,2014. Huawei MediaPad T1 8.0 Sept/9, 2014. Huawei Honor 4 Play 9, 2014. Huawei Honor 3C Play 9, 2014. Huawei Ascend Mate7 Oct, 2014. Huawei Honor Holly Oct/10, 2014. Huawei Honor 4X October 2014. Huawei Ascend G7 10, 2014. Huawei Ascend Mate7 October ,2014. Huawei Ascend P7 Sapphire Edition 09, 2014. Huawei Ascend Y550 Nov, 2014. Huawei Ascend G620s Nov/11, 2014. Huawei Honor 6 Plus Dec/12, 2014. Huawei Ascend GX1 December, 2014. Huawei Ascend Y520 Dec/12, 2014. Huawei Ascend Y221 December, 2014. Huawei Ascend Y540 February ,2015. Huawei MediaPad T1 7.0 March/03, 2015. Huawei MediaPad T1 10 March/3, 2015. Huawei Ascend Mate7 Monarch 03, 2015. Huawei SnapTo April/4, 2015. Huawei P8 4, 2015. Huawei Honor 4C Aprl, 2015. Huawei Y625 04, 2015. Huawei Y635 May/5, 2015. Huawei MediaPad X2 5, 2015. Huawei Honor Bee 05, 2015. Huawei P8lite May/05, 2015. Huawei P8lite ALE-L04 5, 2015. Huawei MediaPad M2 8.0 May/05, 2015. Huawei Y560 Jun/6, 2015. Huawei Y360 06, 2015. Huawei P8max Jul, 2015. Huawei Honor 7 July/07, 2015. Huawei Y6 Jul/07, 2015. Huawei Y6 11 8, 2016. Huawei Honor 7i 8, 2015. Huawei Nexus 6P September/09,2015. Huawei Y6 Pr 10, 2015. Huawei G8 October/10, 2015. Huawei Mate S 10, 2015. Huawei Mate 8 November, 2015. Huawei Enjoy 5s December/12, 2015. Huawei MediaPad M2 10.0 Feb/02, 2016. Huawei Honor Holly 2 Plus 02, 2016. Huawei P9 April/4, 2016. Huawei MediaPad T1 7.0 Plus Aprl, 2016. Huawei P9 lite 4, 2016. Huawei P9 Plus May/05, 2016. Huawei Honor 5c May, 2016. Huawei Honor V8 May/05,2016. Huawei Y5II Jun/06, 2016. Huawei Nova 2 Jun/6 16, 2017. Huawei Y3II 6, 2016. Huawei MediaPad M2 7.0 Jun/06, 2016. Huawei Honor 5A Jun/06, 2016. Huawei Honor 8 Jul/7, 2016. Huawei G9 Plus 08, 2016. Huawei Honor Note 8 September/09, 2016. Huawei MediaPad T2 7.0 September, 2016. Huawei MediaPad T2 7.0 Pro Sept, 2016. Huawei MediaPad T2 10.0 Pro Sept/09, 2016. Huawei nova October/10, 2016. Huawei nova plus Oct/10, 2016. Huawei MediaPad M3 8.4 October/10, 2016. Huawei Honor Holly 3 October, 2016. Huawei Honor 6X 10, 2016. Huawei Honor Pad 2 October/10, 2016. Huawei Enjoy 6 November, 2016 . Huawei Mate 9 Dec/12, 2016. Huawei Honor Magic Dec/12, 2016. Huawei P8 Lite Jan/01, 2017. Huawei Porsche Design Jan, 2017. Huawei Mate 9 Pro Jan/01, 2017. Huawei Enjoy 6s January, 2017. Huawei P10 Lite March/03, 2017. Huawei P10 03, 2017. Huawei P10 Plus April, 2017. Huawei Honor 8 Pro 04, 2017. Huawei MediaPad T3 7.0 5, 2017. Huawei MediaPad T3 8.0 05, 2017. Huawei Y5 June, 2017. Huawei MediaPad T3 10 Jun/6, 2017. Huawei nova 2 Jun/6, 2017. Huawei nova 2 plus Jun/6, 2017. Huawei Y7 Prime 6, 2017. Huawei MediaPad M3 Lite 10 6, 2017. Huawei Honor 9 6, 2017. Huawei MediaPad M3 Lite 8 Jun/6, 2017. Huawei Y6 Jul/07, 2017. Huawei Y7 Jul, 2017. Huawei Honor 6A (Pro) Jul/07, 2017. Huawei Honor 9 Jul, 2017. Huawei P9 lite mini September, 2017. Huawei Y6II Compact 9, 2016. Huawei Y3 Sept, 2017. Huawei Mate 10 Porsche Design November/11, 2017. Huawei Mate 10 Pro November/11, 2017. Huawei Mate 10 November, 2017. Huawei Watch 2 Pro November, 2017. Huawei Mate 10 Lite 11, 2017. Huawei Honor 6C Pro November/11, 2017. Huawei Honor 9 Lite Desember 26, 2017. Huawei P smart Dec, 2017. Huawei nova 2s Dec, 2017. Huawei Honor 7X December/12, 2017. Huawei Honor View 10 January 8, 2017. Huawei Enjoy 7 Plus Huawei Y5 Huawei P10 Plus Huawei P10 Huawei Mate 9

ideally your day is obviously stunning along with total of advantages, you should get a hold of

cad systems help february 2013

for ones wallpaper.

5(7811 votes)

Gallery of Android Programming

android programming cad systems help february 2013android programming make your learning effective with 24x7 on demand techandroid programming 20 ways to learn android development for freeandroid programming 80 android programming for beginners courseandroid programming where do i start code schoolandroid programming android programming for beginners packt booksandroid programming how to learn android app development brutally honestandroid programming android development omkarsoftandroid programming android tutorial android programming basics xml javaandroid programming 20 ways to learn android development for free codecondoandroid programming basic4android screenshotsandroid programming how to become a android developer aleem siddiquiandroid programming best websites to learn android programming education andandroid programming android programming android apps on playandroid programming learn android 4 0 programming in java udemy free courseandroid programming technology archives shibaji debnathandroid programming android studio android programming tutorial for beginnersandroid programming basic4android tutorials vb to android pc to phoneandroid programming 20 free websites to learn android programming theandroid programming the complete android development classes and courses eandroid programming adds kotlin as an official programming language forandroid programming 5 essential things to about android programmingandroid programming android programming made easyandroid programming maps android api v2 android programmingandroid programming listview with images and text android programming dooviandroid programming write a program showing all the contacts in androidandroid programming what basic understanding of java is required for androidandroid programming how to create an android apps from scratch