Android Open Source - task4java Android Service Client

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License

The source code is released under:

Apache License

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Java Source Code

/*
 *  Copyright (c) 2014 Andree Hagelstein, Maik Schulze, Deutsche Telekom AG. All Rights Reserved.
 *  /*w  ww.ja  va 2 s.  com*/
 *  Filename: AndroidServiceClient.java
 */

package com.task4java.android.examples.backend;

import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.concurrent.Callable;

import com.task4java.Tuple;
import com.task4java.android.examples.App;
import com.task4java.data.backend.IServiceClient;
import com.task4java.data.backend.model.MainMenuAnnotation;
import com.task4java.util.concurrent.Task;
import com.task4java.util.concurrent.TaskFactory;

import dalvik.system.DexFile;
import dalvik.system.PathClassLoader;

public class AndroidServiceClient implements IServiceClient {

  @Override
  public Task<List<Tuple<MainMenuAnnotation, Class<?>>>> getMainMenu() {

    return TaskFactory.startNew(new Callable<List<Tuple<MainMenuAnnotation, Class<?>>>>() {

      @Override
      public List<Tuple<MainMenuAnnotation, Class<?>>> call() throws Exception {

        String packageName = App.getAppContext().getPackageName();

        String apkName = App.getAppContext().getPackageManager().getApplicationInfo(packageName, 0).sourceDir;
        DexFile dexFile = new DexFile(apkName);

        PathClassLoader classLoader = new PathClassLoader(apkName, Thread.currentThread().getContextClassLoader());

        List<Tuple<MainMenuAnnotation, Class<?>>> classes = new ArrayList<Tuple<MainMenuAnnotation, Class<?>>>();
        Enumeration<String> entries = dexFile.entries();

        while (entries.hasMoreElements()) {

          String entry = entries.nextElement();

          if (entry.startsWith(packageName)) {

            Class<?> entryClass = classLoader.loadClass(entry);

            if (entryClass != null) {

              Annotation[] annotations = entryClass.getAnnotations();

              for (Annotation annotation : annotations) {
                if (annotation instanceof MainMenuAnnotation) {
                  classes.add(new Tuple<MainMenuAnnotation, Class<?>>((MainMenuAnnotation) annotation, entryClass));
                }
              }
            }
          }
        }

        return classes;
      }
    });
  }

}

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