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Android app using Google Maps Directions API

I need an Android app, consisting of one activity only. It should have a text input, where you can enter the address. Then you click a button and it sends the address together with your coordinates (GPS) to Google Directions API. The API will return steps (directions) in xml format. So far the task is trivial, however, I need the app to display (in text) instructions as of where to go. Simply displaying instructions from the received xml is not enough. For example, imagine I am facing the opposite direction and move forward. The app should display turn around (or turn 180 degrees) and move forward for so and so meters. If I then deviate from the path to the left for, let us say, more than 30 degrees, it should display "you should turn 30 degrees to the right and keep going for so and so meters".

The suggested algorithm is:

1) Find your direction (vector)

2) Find the vector from your position to the next "end_location"

3) You can find the angle by cross product.

4) If the arcsin of the cross product is 0 or within acceptable 5 degrees and pointing in the same direction everything is fine, just display "go forward for x meters"

5) else display "you are deviating from the path. turn x degrees to the left/right"

The app should constantly (or every 3 seconds) compare it is gps coordinates to the next "end_location" from the api. The "end_location" is given in longitude and latitude and, probably, will have to be converted to a vector first.

The general idea is, a person should be able to follow google directions without the map itself.

I have included a document which further clarifies what I need.

Færdigheder: Android, Java, Mobile App Development

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Om arbejdsgiveren:
( 0 bedømmelser ) GROZNY, Russian Federation

Projekt-ID: #15615774

28 freelancers are bidding on average £183 for this job

TopOfStack

A proposal has not yet been provided

£277 GBP in 10 dage
(232 bedømmelser)
8.4
kongxiangjia

Hello. I've read your description carefully and get to know that you need to make android app using google maps Directions API. I have developed many apps and can complete your app in short time. Relevant Skills and E Mere

£250 GBP in 3 dage
(119 bedømmelser)
8.0
covernal

Hi Sir I can do your project perfectly. I have rich experience in Mobile Development for 9 years. I think it is me who you are looking for. If you choose me, I can do my best for you. Regards. Thanks Relevant Skills Mere

£150 GBP in 3 dage
(59 bedømmelser)
7.7
jinc107

Dear customer. I checked your proposal. I hope to work with you. Relevant Skills and Experience I have wealth skills on Android App and backend development. And I also have strong skills on third party and several Api Mere

£150 GBP in 3 dage
(28 bedømmelser)
6.7
EliZhang221

iPhone, iPad , Android, FireBase, Swift3, ObjectC, NodeJs, Ruby I have these skills under my belt. [url removed, login to view] Relevant Skills and Experience [url removed, login to view] Mere

£200 GBP in 3 dage
(26 bedømmelser)
6.6
jinzhenzhu8691

My name is LiMing. I have been coding for over 10 years since I was 16 years old, and have rich experiences. I read your description carefully and understood perfectly Please contact to me and let's discuss your pro Mere

£150 GBP in 3 dage
(16 bedømmelser)
6.1
Ajcm623

Hello Sir I have checked your requirements carefully and already mastered mobile development As you can see from my profile, if you wish, I can explain about my portfolios Relevant Skills and Experience I have profess Mere

£150 GBP in 3 dage
(11 bedømmelser)
5.2
SwapnilChouhan

Hi, I have read and understood your requirements completely and I am interested in development of this app to show direction in text to user. I will develop app with very good quality. Relevant Skills and Experience Mere

£150 GBP in 5 dage
(35 bedømmelser)
5.4
suniljoshi151

Hi, I have seen your requirements about an Android App. I have seen what type of functionality you want & I can assure you I can do it fully for you. Relevant Skills and Experience *Certified Developers *7 years of ex Mere

£250 GBP in 3 dage
(17 bedømmelser)
5.4
kaustubhkpatil

Dear Sir/ Madam, I am interested in this project as it is exactly within my scope of expertise: I am ready to start from today.I have 4+ years of experience in Android/iPhone development Relevant Skills and Experienc Mere

£150 GBP in 3 dage
(31 bedømmelser)
5.0
mmdnow

Hi Mate, We have small team to develop android app in studio. we worked on social media,chatting,map,payment integration and social event app too, we build new and do changes in existing app as need. Relevant Skills Mere

£222 GBP in 5 dage
(7 bedømmelser)
4.8
laxaar

Hello, Thank you very much for sharing your requirement. I have read the brief project description and I would like to be invited for further discussion to proceed. Relevant Skills and Experience We are a team of 8 y Mere

£250 GBP in 3 dage
(2 bedømmelser)
4.1
letshappy

hello, i am good to deal with google maps Relevant Skills and Experience google maps, html, css Proposed Milestones £233 GBP - 233

£233 GBP in 4 dage
(5 bedømmelser)
4.0
hy1990com

Hello, I have developed many apps for 7 years including social, location, uber like app, hybrid app and image processing. Please check the followings. Relevant Skills and Experience [url removed, login to view] Mere

£150 GBP in 3 dage
(6 bedømmelser)
3.8
appleearth039

Hello, Client! Thanks for the opportunity to bid on your project. Relevant Skills and Experience I'm a master in GIS fields. I've rich experience in developing interactive webMap, mobile Map based on google Maps API. Mere

£222 GBP in 3 dage
(10 bedømmelser)
3.9
raeesbaig

Hi, We have already done many type of app for clients I would like to suggest you we will develop it for you in Android, iOS Native due to best framework support on the schema level. Relevant Skills and Experience W Mere

£111 GBP in 3 dage
(3 bedømmelser)
2.4
£111 GBP in 3 dage
(1 bedømmelse)
2.1
ndmunoz

A proposal has not yet been provided

£116 GBP in 7 dage
(4 bedømmelser)
2.0
FreeXXM

Greetings! As an expert in mobile development, I'm very interested in your job. I have reviewed your job description carefully, I think this job is best fit to me. Best Regards Xuan Relevant Skills and Experience - H Mere

£150 GBP in 3 dage
(2 bedømmelser)
1.0
appsgallery

Hello, We are a experienced mobile and web app developers. We are interested in your project. We have good working experience of google map. We are expecting positive response from your side. Relevant Skills and Exp Mere

£166 GBP in 15 dage
(1 bedømmelse)
0.6