android-volley-manager

一、说明

Android network manager based on Android Volley, JSON, XML, Map, RequestMap(with file) support.
AndroidVolley，Android Volley核心库及扩展工程。
AndroidVolleySample，网络请求工具示例工程。
Release，AndroidVolley jar包。

二、Volley基本处理流程

1、应用初始化Volley。
2、Volley创建一个RequestQueue、NetworkDispatcher组及Network。
3、RequestQueue即一个Request队列，RequestQueue会创建一个ExecutorDelivery。
4、NetworkDispatcher实质是Thread，从RequestQueue中取Request，通过Network加以执行。
5、Network负责网络请求处理，具体过程交给HttpStack处理。
6、HttpStack分HttpURLConnection(SDK_INT>=9)与HttpClient与两种方式。
7、ExecutorDelivery负责处理请求结果，并与主线程进行交互。
8、Volley在上述2-7的基础上增加了Cache等附加处理环节。

三、网络请求工具

在AndroidVolley基础上扩展了com.android.http包，增加了ByteArrayRequest及RequestManager，方便JSON、XML、Map()、及RequestMap()的网络请求。

1.初始化RequestManager

public class VolleyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        RequestManager.getInstance().init(this);//初始化工具
    }

    @Override
    public void onTerminate() {
        super.onTerminate();
    }
}

2.使用RequestManager

public class MainActivity extends Activity {

    private static final String OUT_FILE = "upload.txt";

    private static final String OUT_DATA = "sadf464764sdf3ds1f3adsf789213557r12-34912-482130487321gjsaldfalfu2390q3rtheslafkhsdafhreasof";

    private static final String POST_URL = "http://allthelucky.ap01.aws.af.cm/memoServer";

    private static final String POST_JSON = "{\"action\":\"test\", \"info\":\"hello world\"}";

    private static final String GET_URL = "https://raw.githubusercontent.com/panxw/android-volley-manager/master/test.txt";

    private static final String UPLOAD_URL = "http://www.splashpadmobile.com/upload.php";

    private LoadControler mLoadControler = null;

    private ImageView mImageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.mImageView = (ImageView) findViewById(R.id.imageView1);

        this.testPost();
        this.testGet();
        this.testFileUpload();
        this.testImageLoader();
    }

    private void testPost() {
        mLoadControler = RequestManager.getInstance().post(POST_URL, POST_JSON, requestListener, 0);
    }

    private void testGet() {
        mLoadControler = RequestManager.getInstance().get(GET_URL, requestListener, 1);
    }

    private void testFileUpload() {
        MainActivity.prepareFile(this);

        RequestMap params = new RequestMap();
        File uploadFile = new File(this.getFilesDir(), OUT_FILE);
        params.put("uploadedfile", uploadFile);
        params.put("share", "1");

        mLoadControler = RequestManager.getInstance().post(UPLOAD_URL, params, requestListener, 2);
    }

    private void testImageLoader() {
        NetworkApplication.getImageLoader().get("http://www.baidu.com/img/bdlogo.png", new ImageListener() {

            @Override
            public void onErrorResponse(VolleyError error) {
                System.out.println("Image onErrorResponse");
            }

            @Override
            public void onResponse(ImageContainer response, boolean isImmediate) {
                System.out.println("Image onResponse");
                if (response != null && response.getBitmap() != null) {
                    mImageView.setImageBitmap(response.getBitmap());
                }
            }
        });
    }

    private RequestListener requestListener = new RequestListener() {
        @Override
        public void onSuccess(String response, String url, int actionId) {
            System.out.println("actionId:" + actionId + ", OnSucess!\n" + response);
        }

        @Override
        public void onError(String errorMsg, String url, int actionId) {
            System.out.println("actionId:" + actionId + ", onError!\n" + errorMsg);
        }

        @Override
        public void onRequest() {
            System.out.println("request send...");
        }
    };

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        if (mLoadControler != null) {
            mLoadControler.cancel();
        }
    }

    private static void prepareFile(Context context) {
        FileOutputStream fos = null;
        try {
            fos = context.openFileOutput(OUT_FILE, Context.MODE_PRIVATE);
            try {
                fos.write(OUT_DATA.getBytes());
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}