tuto_ecj_android
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tuto_ecj_android [2014/03/03 15:16] Denis Pallez [5. Print configuration data] |
tuto_ecj_android [2014/03/03 16:05] Denis Pallez |
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| - | ====== TutorialHow to install ECJ library on Android environment ? ====== | + | ====== How to install ECJ library on Android environment ? ====== |
| - | + | ||
| - | - [[#install|Installation of Eclispe and Android SDK]] | + | |
| - | - [[#createANewProject|Create a new Android Project]] | + | |
| - | - [[#addEcj|Add ECJ library in your project]] | + | |
| - | - [[#collectInfo|Collect configuration data]] | + | |
| - | - [[#printInfo|Print configuration data]] | + | |
| - | - [[#writeInfo|Write in a File with Android]] | + | |
| - | - [[#useNewConfigFile|Use a file in an another one]] | + | |
| ===== 1. Installation of Eclispe and Android SDK ===== | ===== 1. Installation of Eclispe and Android SDK ===== | ||
| Line 43: | Line 34: | ||
| Now, to get the all data in "config_ecj.params", we have to create an InputStream.\\ Add these lines in your code : | Now, to get the all data in "config_ecj.params", we have to create an InputStream.\\ Add these lines in your code : | ||
| - | <code> | + | <code java> |
| InputStream configStream = null; | InputStream configStream = null; | ||
| try { | try { | ||
| Line 56: | Line 47: | ||
| If your configuration file is named "config_ecj.params", located in the assets package and "this" correspond to the current context of your application, this code shouldn't cause any problem. | If your configuration file is named "config_ecj.params", located in the assets package and "this" correspond to the current context of your application, this code shouldn't cause any problem. | ||
| It only remains to transfer the InputStream "configStream" at the ParameterDatabase who's in charge of initializing ECJ. Here is how to initialize the ParameterDatabase : | It only remains to transfer the InputStream "configStream" at the ParameterDatabase who's in charge of initializing ECJ. Here is how to initialize the ParameterDatabase : | ||
| - | <code> | + | <code java> |
| ParameterDatabase paramDB = null; | ParameterDatabase paramDB = null; | ||
| try { | try { | ||
| Line 67: | Line 58: | ||
| Now, you could run your evolutionary algorithm with the code below (more details are given in the ECJ manual, page 44) | Now, you could run your evolutionary algorithm with the code below (more details are given in the ECJ manual, page 44) | ||
| - | <code> | + | <code java> |
| EvolutionState evaluatedState = Evolve.initialize(paramDB, 0); | EvolutionState evaluatedState = Evolve.initialize(paramDB, 0); | ||
| evaluatedState.startFresh(); | evaluatedState.startFresh(); | ||
| Line 102: | Line 93: | ||
| ===== 6. Write in a File with Android ===== | ===== 6. Write in a File with Android ===== | ||
| - | However, ECJ may need a real File to run, and not an InputStream. For example, to initialize a population.\\ \\ In this part we'll see how to write a file.\\ As in the previous example you'll need a package named "assets".\\ Create a file in your workspace named "config_ecj_in.in" (for an initialization file, by example).\\ After, you'll need the context of you application :\\ Context mContext = this; Then, you have to load your file on your smartphone : File file = mContext.getFileStreamPath("config_ecj_in.in"); Finaly, you can write into your file thanks to a FileWrite and a BufferedWriter : FileWriter fileWriter = null;\\ try {\\ fileWriter = new FileWriter(file);\\ } catch (IOException e1) {\\ e1.printStackTrace();\\ }\\ BufferedWriter output = new BufferedWriter(fileWriter);\\ try {\\ output.write("Hello World ! ");\\ }\\ output.flush();\\ catch (Exception e) {\\ Toast.makeText(mContext, "Settings not saved", Toast.LENGTH_SHORT).show();\\ }\\ finally {\\ try {\\ output.close();\\ fileWriter.close();\\ } catch (IOException e) {\\ Toast.makeText(mContext, "Settings not saved", Toast.LENGTH_SHORT).show();\\ }\\ }\\ As you can understand, this code write the text "Hello World" into the file "config_ecj_in.in".\\ | + | However, ECJ may need a real File to run, and not an InputStream. For example, to initialize a population. |
| + | |||
| + | In this part we'll see how to write a file. | ||
| + | As in the previous example you'll need a package named "assets".\\ Create a file in your workspace named "config_ecj_in.in" (for an initialization file, by example). | ||
| + | After, you'll need the context of you application : <code java>Context mContext = this; </code> | ||
| + | Then, you have to load your file on your smartphone : <code java>File file = mContext.getFileStreamPath("config_ecj_in.in"); </code> | ||
| + | Finaly, you can write into your file thanks to a FileWrite and a BufferedWriter : <code java> | ||
| + | FileWriter fileWriter = null; | ||
| + | try { | ||
| + | fileWriter = new FileWriter(file); | ||
| + | } | ||
| + | catch (IOException e1) { | ||
| + | e1.printStackTrace(); | ||
| + | } | ||
| + | BufferedWriter output = new BufferedWriter(fileWriter); | ||
| + | try { | ||
| + | output.write("Hello World ! "); | ||
| + | } | ||
| + | output.flush(); | ||
| + | catch (Exception e) { | ||
| + | Toast.makeText(mContext, "Settings not saved", Toast.LENGTH_SHORT).show(); | ||
| + | } | ||
| + | finally { | ||
| + | try { | ||
| + | output.close(); | ||
| + | fileWriter.close(); | ||
| + | } | ||
| + | catch (IOException e) { | ||
| + | Toast.makeText(mContext, "Settings not saved", Toast.LENGTH_SHORT).show(); | ||
| + | } | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | As you can understand, this code write the text "Hello World" into the file "config_ecj_in.in".\\ | ||
| [[#begin|Back to begin]] | [[#begin|Back to begin]] | ||
| Line 110: | Line 134: | ||
| Now, you can use this file as in the previous [[#collectInfo|example]].\\ | Now, you can use this file as in the previous [[#collectInfo|example]].\\ | ||
| - | But, as we said before, ECJ may need a file. Or more precisely, the path of this file.\\ For a population initialization, you give the path of the initialization file to the configuration file.\\ This path is the following one:\\ /data/data/name_of_your_current_project/files/config_ecj_in.in.\\ \\ If you want to initialize your population "config_ecj_in.in" from the configuration file "mainConfigFile.params", add this line in "mainConfigFile.params":\\ pop.file = /data/data/name_of_your_current_project/files/config_ecj_in.in\\ Now, if you load "mainConfigFile.params" as show in this [[#collectInfo|example]] you will also initialize you popullation with "config_ecj_in.in".\\ Simple, isn't it ?\\ Here is the end of our tutorial. Good luck !\\ | + | But, as we said before, ECJ may need a file. Or more precisely, the path of this file.\\ For a population initialization, you give the path of the initialization file to the configuration file.\\ This path is the following one:\\ /data/data/name_of_your_current_project/files/config_ecj_in.in.\\ \\ If you want to initialize your population "config_ecj_in.in" from the configuration file "mainConfigFile.params", add this line in "mainConfigFile.params": |
| + | <code> | ||
| + | pop.file = /data/data/name_of_your_current_project/files/config_ecj_in.in | ||
| + | </code> | ||
| + | Now, if you load "mainConfigFile.params" as show in this [[#collectInfo|example]] you will also initialize you popullation with "config_ecj_in.in".\\ Simple, isn't it ?\\ Here is the end of our tutorial. Good luck !\\ | ||
| [[#begin|Back to begin]] | [[#begin|Back to begin]] | ||
| Any questions or suggestions ? [[guegan@polytech.unice.fr;fauvelja@polytech.unice.fr;adiaz@polytech.unice.fr;arnaud@polyech.unice.fr?subject=Tutorial%20ECJ%20in%20Android|Contact us !]] | Any questions or suggestions ? [[guegan@polytech.unice.fr;fauvelja@polytech.unice.fr;adiaz@polytech.unice.fr;arnaud@polyech.unice.fr?subject=Tutorial%20ECJ%20in%20Android|Contact us !]] | ||
| + | |||
| + | <note>written by Ancelin Arnaud, Aliénor Diaz, Olivier Fauvel-Jaeger, Frédéric Guégan in 2013/06</note> | ||
| + | |||
tuto_ecj_android.txt · Last modified: 2014/03/03 17:27 by Denis Pallez
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