接口回调的使用

有个需求：
需要对目前的网络请求框架进行二次封装，到达将来替换网络框架一改全改的效果
以封装xutils3的网络请求模块为例：

public interface WyCallBack {
    void onSuccess(String result);
    void onError(String error);
    void onCancel(String cancel);
    void onFinish(String finish);

}

import org.xutils.common.Callback;
import org.xutils.http.RequestParams;
import org.xutils.x;

public class WyHttp {
    static WyCallBack mWyCallBack =null;
    public  static void setCallBack(WyCallBack wyCallBack) {
        mWyCallBack = wyCallBack;
    }
    public static void getHttp(String url) {
        RequestParams params = new RequestParams(url);
        x.http().get(params, new Callback.CommonCallback<String>() {
            @Override
            public void onSuccess(String result) {
                mWyCallBack.onSuccess(result);
            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
                mWyCallBack.onError(ex.getMessage());
            }

            @Override
            public void onCancelled(CancelledException cex) {
//                Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
                mWyCallBack.onCancel(cex.toString());
            }

            @Override
            public void onFinished() {
                mWyCallBack.onFinish("网络请求任务完全结束");
            }
        });

    }
}

public class MainActivity extends AppCompatActivity implements  WyCallBack {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setCallBack(this);
//        进行get请求
        WyHttp.getHttp("https://www.baidu.com/s");
    }

    @Override
    public void onSuccess(final String result) {
        WyLogUtils.e("onSuccess: "+result);
    }

    @Override
    public void onError(final String error) {
        WyLogUtils.e("onError: "+error);
    }

    @Override
    public void onCancel(final String cancel) {
        WyLogUtils.e("cancel: "+cancel);
    }

    @Override
    public void onFinish(final String finish) {
        WyLogUtils.e("finish: "+finish);
    }

}

log工具类

public class WyLogUtils {
    public static String customTagPre = "wy";
    private static boolean isDebug = true;


    public static void e(String deBugInfo) {
        if (isDebug) {
            StackTraceElement caller = Thread.currentThread().getStackTrace()[4];
            String tag = generateTag(caller);
            Log.e(tag, deBugInfo);
        }
    }

    private static String generateTag(StackTraceElement caller) {
        String tag = "%s.%s(L:%d)";
        String callerClazzName = caller.getClassName();
        callerClazzName = callerClazzName.substring(callerClazzName.lastIndexOf(".") + 1);
        tag = String.format(tag, callerClazzName, caller.getMethodName(), caller.getLineNumber());
        tag = TextUtils.isEmpty(customTagPre) ? tag : customTagPre + ":" + tag;
        return tag;
    }
}