Android App Development framework: Android Annotations Learning notes Summary

Android App Development framework: Android Annotations Android Annotations is an open-source framework for accelerating the development of Android applications, allowing you to focus on the implementation of functionality, simplifying code, and improving maintainability. In fact, there are many books in the open-source world of programming, but GitHub has many useful projects and open source code on social networking sites and code hosting sites, such as the Android app development Framework Android Annotations, So the improvement of English level is imperative ah, otherwise I can only wait until the translation team to guess my turn to chew a new knowledge, technology and application, so late others a lot of steps. Characteristics: • Dependency Injection: Inject views, extras, system services, resources, ... • Simplified threading Model: Annotate your methods So, they execute on the UI thread or on a background thread. Event Binding: Annotate methods to handle events in views, no more ugly anonymous listener classes! REST clients: Create a client interface, Androidannotations generates the implementation. androidannotations provide those good things and even more for less than 50kb, without any runtime perf impact! code example: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21st 22 23 24 25 26 27 28 29 30 31 @EActivity (r.layout.translate)//sets content view to R.layout.translate public class Translateactivity extends Activity { @ViewById//Injects R.id.textinput EditText TextInput; @ViewById (R.id.mytextview)//injects R.id.mytextview TextView result; @AnimationRes//Injects Android. R.anim.fade_in Animation FadeIn; @Click//When R.id.dotranslate button is clicked void Dotranslate () { Translateinbackground (Textinput.gettext (). toString ()); } @Background//Executed in a Background thread void Translateinbackground (String texttotranslate) { String Translatedtext = callgoogletranslate (texttotranslate); Showresult (Translatedtext); } @UiThread//Executed in the UI thread void Showresult (String translatedtext) { Result.settext (Translatedtext); Result.startanimation (FadeIn); } // [...] } Project home: http://www.open-open.com/lib/view/home/1367820981261 This project homepage can be found to download the jar package for Android annotations. Then here is an example of how to use this android annotations jar package: Note: One of the API's jar packages is placed under the original Libs folder, and the other jar package is placed under its own new Compilb-lib folder. Note: anootation processing is found in Java complier. If there is no probable reason you are using the Android SDK Adt-eclipse, which is dedicated to developing Android, you will need to download the relevant configuration. Then choose Juno Installation, and then because the file is too many hard to find, enter the Eclipse Java development Tools you want to download in type filter text, then there may be different versions, naturally choose the latest version, or the following tick show the latest version, There will be only this tools out, then next continue to click on the know-how to download and install the network, and finally prompt to restart Once restarted, the anootation processing can be found in the Java complier. Then we then cut into the topic: Select annotation processing, and then tick Enabel project specific settings selected. Then select the factory Path under annotation processing: Also tick Enabel project specific settings, then click Add JARs, add the jar under Compile-lib under the folder, then apply, then OK. This will enable the use of this Android annotations open source jar package. The following is a simple explanation of how and how to use the effect, you can compare with your original Android application development in normal circumstances, you know this Android annotations Open source project brings the benefits of how big. Examples of using procedures: 1, first in the Manifest list file modified, is in Android:name= ". Mainactivity "followed by a" _ "to become Android:name=". Mainactivity_ ", do not ask why, this knowledge point of course is the Android annotations open source projects related to the use of knowledge. 2, and then back to Mainactivity.java, the following actions are implemented: 3, and then through their own mobile phone operation but success.

Android App Development framework: Android Annotations Learning notes Summary