Android开发 使用Xutils3请求、解析数据

1、引进xutils3的包和Gosn包

2、建立MyApplication类：

public class MyApplication extends Application {

@Override
public void onCreate() {
    super.onCreate();
    x.Ext.init(this);
}
}

并在配置文件将完成配置：

<application
    android:name="MyApplication">
    不要忘了这个哦：
    <uses-permission android:name="android.permission.INTERNET"/>

3、新建一个HttpUtils类，里面完成申请数据

public class HttpUtils {

private static HttpUtils httpPost;

public static HttpUtils getInstance() {
    if (httpPost == null) {
        httpPost = new HttpUtils();
    }
    return httpPost;
}

public void postSend(final Context context) {
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo mobNetworkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    NetworkInfo wifiNetworkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    if (!mobNetworkInfo.isConnected() && !wifiNetworkInfo.isConnected()) {
        Toast.makeText(context, "你已经进入没有网络的异次元世界", Toast.LENGTH_SHORT).show();
    } else {
        x.http().post(onResult.onParams(), new Callback.CacheCallback<String>() {
            @Override
            public boolean onCache(String result) {
                return false;
            }

            @Override
            public void onSuccess(String result) {
                Log.e(TAG, "onSuccess: "+result);
                try {
                    JSONObject object = new JSONObject(result);
                    if (object.getString("status").equals("1")){
                        onResult.onUsage(result);
                    }else {
                        Toast.makeText(context, object.getString("info"), Toast.LENGTH_SHORT).show();
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }

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

            @Override
            public void onCancelled(CancelledException cex) {

            }

            @Override
            public void onFinished() {

            }
        });
    }


}

public void postSend() {
    x.http().post(onResult.onParams(), new Callback.CacheCallback<String>() {
        @Override
        public boolean onCache(String result) {
            return false;
        }

        @Override
        public void onSuccess(String result) {
            onResult.onUsage(result);
        }

        @Override
        public void onError(Throwable ex, boolean isOnCallback) {
            System.out.println("请求出错...");
            System.out.println(ex);
            onResult.onError(ex.toString());
        }

        @Override
        public void onCancelled(CancelledException cex) {

        }

        @Override
        public void onFinished() {

        }
    });
}


public void getSend(final Context context) {

    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo mobNetworkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    NetworkInfo wifiNetworkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

    if (!mobNetworkInfo.isConnected() && !wifiNetworkInfo.isConnected()) {

        Toast.makeText(context, "你已经进入没有网络的异次元世界", Toast.LENGTH_SHORT).show();

    } else {

        x.http().get(onResult.onParams(), new Callback.CacheCallback<String>() {
            @Override
            public boolean onCache(String result) {
                return false;
            }

            @Override
            public void onSuccess(String result) {
                onResult.onUsage(result);
            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
                System.out.println("请求出错...");
                System.out.println(ex);
            }

            @Override
            public void onCancelled(CancelledException cex) {

            }

            @Override
            public void onFinished() {

            }
        });
    }
}

public interface OnResult {
    /**
     * @return 自定义的RequestParame请求参数
     */
    RequestParams onParams();

    /**
     * 请求成功后的操作
     *
     * @param result
     */
    void onUsage(String result);

    /**
     * 请求出错后的操作
     */
    void onError(String error);
}

private OnResult onResult;

public void setOnResult(OnResult onResult) {
    this.onResult = onResult;
}
}

4、请求数据

HttpUtils httpUtils1=new HttpUtils();
            httpUtils1.setOnResult(new HttpUtils.OnResult() {
                @Override
                public RequestParams onParams() {

                    RequestParams params=new RequestParams("请求数据的接口");
                    params.addParameter("字段一",值);
                    params.addParameter("字段二",值);
                    return params;
                }
                @Override
                public void onUsage(String result) {
                try {
                JSONObject object = new JSONObject(result);
                if (object.getInt("status") == 1) {
                    Gson gson = new Gson();
                    DriverModel （对应的Bean文件，bean文件的建立就不细说了，你们可以使用Gosnformat插件快速建立Bean文件）
                    DriverModel driverModel = new DriverModel();
                    driverModel = gson.fromJson(result, DriverModel.class);
                //假如是list
                for (int i = 0; i < driverModel.getDate().size(); i++) {

                        if (driverModel.getDate().get(i).getStatus().equals("2")) {
                            dateBeanList.add(driverModel.getDate().get(i));
                        }
                    }
                }

                myAdapter = new OrderItemAdapter(getActivity(), dateBeanList);
                lvMyOrder.setAdapter(myAdapter);
                myAdapter.notifyDataSetChanged();

            } catch (JSONException e) {
                e.printStackTrace();
            }
                }
                @Override
                public void onError(String error) {

                }
            });
            httpUtils1.postSend();

        }

5、显示数据：http://blog.youkuaiyun.com/qq_30299305/article/details/73864024