public  class TestAActivity  extends Activity {

     /**  TestB包名  */
     private  static  final String PACKAGE_TEST_B = "com.nmbb.b";

    @Override
     public  void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         try {
             final Context ctxTestB = getTestBContext();
            Resources res = ctxTestB.getResources();
             //  获取字符串string
            String hello = res.getString(getId(res, "string", "hello"));
            ((TextView) findViewById(R.id.testb_string)).setText(hello);

             //  获取图片Drawable
            Drawable drawable = res
                    .getDrawable(getId(res, "drawable", "testb"));
            ((ImageView) findViewById(R.id.testb_drawable))
                    .setImageDrawable(drawable);

             //  获取颜色值
             int color = res.getColor(getId(res, "color", "white"));
            ((TextView) findViewById(R.id.testb_color))
                    .setBackgroundColor(color);

             //  获取布局文件
            View view = getView(ctxTestB, getId(res, "layout", "main"));
            LinearLayout layout = (LinearLayout) findViewById(R.id.testb_layout);
            layout.addView(view);

             //  启动TestB Activity
            findViewById(R.id.testb_activity).setOnClickListener(
                     new OnClickListener() {
                        @Override
                         public  void onClick(View v) {
                             try {
                                @SuppressWarnings("rawtypes")
                                Class cls = ctxTestB.getClassLoader()
                                        .loadClass("com.nmbb.TestBActivity");
                                startActivity( new Intent(ctxTestB, cls));
                            }  catch (ClassNotFoundException e) {
                                e.printStackTrace();
                            }
                        }
                    });
        }  catch (NameNotFoundException e) {
            e.printStackTrace();
        }
    }

     /**
     * 获取资源对应的编号
     * 
     *  @param  testb
     *  @param  resName
     *  @param  resType
     *            layout、drawable、string
     *  @return
      */
     private  int getId(Resources testb, String resType, String resName) {
         return testb.getIdentifier(resName, resType, PACKAGE_TEST_B);
    }

     /**
     * 获取视图
     * 
     *  @param  ctx
     *  @param  id
     *  @return
      */
     public View getView(Context ctx,  int id) {
         return ((LayoutInflater) ctx
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(id,
                 null);
    }

     /**
     * 获取TestB的Context
     * 
     *  @return
     *  @throws  NameNotFoundException
      */
     private Context getTestBContext()  throws NameNotFoundException {
         return createPackageContext(PACKAGE_TEST_B,
                Context.CONTEXT_IGNORE_SECURITY | Context.CONTEXT_INCLUDE_CODE); 

    @SuppressWarnings("rawtypes")
     private  static HashMap<String, Integer> getR(Class cls)  throws ClassNotFoundException, InstantiationException, IllegalAccessException {
        HashMap<String, Integer> result =  new HashMap<String, Integer>();
         for (Class r : cls.getClasses()) {
             if (!r.getName().endsWith("styleable")) {
                Object owner = r.newInstance();
                 for (Field field : r.getFields()) {
                    result.put(field.getName(), field.getInt(owner));
                }
            }
        }
         return result;