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How to start with Android development [DSP2017 #07]

In this part I want to show how I started with a first app. My previous experience with creating an Android application was about 4-5 years ago. I've created one or two simple applications during my studies and forgot about this topic. Today when I wanted to create a new app I needed to start from beginning. First of all I need to install tools: Android Studio (I use Intellij with Android extension). Android SDK - I used the sdkmanager but during Android Studio installation sdk should be installed. If you have 64 bits system you need to check: Required libraries for 64-bit machines . If you have installed all above tools you should be able to create simple Android project and run it on your phone. Yes, like always I met few problems with run the application on my phone. #1 The adb can not find my device. Solution : turn phone as MTP mode. 2# Error:Execution failed for task ':app:processDebugResources'. > com.android.ide.common.process.ProcessException:...

Nany - opis projektu [DSP2017 #03]

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Rest API desing [DSP2017 #02]

Rest API best practices During creating an http api we should remember about few rules. As a API designers we must know how to name our endpoints. When we have a library which contains users and their books. As a collection we should use a plural form of verb like books and users. Below we can find examples of endpoints for certain activity and strict HTTP methods Add new book: /users/{userId}/books/{bookId} POST Get book: /users/{userId}/books/{bookId} GET Edit book: /users/{userId}/books/{bookId} PUT Remove book: /users/{userId}/books/{bookId} DELETE   Status codes 200 OK 201 Created 202 Accepted - request has been accepted but not completed. 204 Non content - the request is correct but no content in response body. 400 Bad request 401 Unauthorized 403 Forbidden 404 Not found 408 Request time out 409 - Conflict - duplicate data or invalid data state would occur. 500 Internal server error 501 Not implemented 503 Service unavailable    I th...