【软通动力】HarmonyOS三方件开发指南(3)-AsyncHttpHarmony组件 原创 精华

"reqPermissions": [

  {

    "name": "ohos.permission.INTERNET",

    "reason": "",

    "usedScene": {

      "ability": [

        "com.example.ohosdemo.MainAbility",

        "com.example.ohosdemo.slice.MainAbilitySlice"

      ],

      "when": "always"

    }

  },
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<?xml version="1.0" encoding="utf-8"?>

<DirectionalLayout

    xmlns:ohos="http://schemas.huawei.com/res/ohos"

    ohos:height="match_parent"

    ohos:width="match_parent"

    ohos:orientation="vertical">




    <Text

        ohos:id="$+id:tvResult"

        ohos:height="match_content"

        ohos:width="match_content"

        ohos:background_element="$graphic:background_ability_main"

        ohos:layout_alignment="horizontal_center"

        ohos:text="数据显示"

        ohos:text_size="50"

        ohos:top_margin="180vp"

    />

    <Text

        ohos:id="$+id:tvRequest"

        ohos:height="match_content"

        ohos:width="match_content"

        ohos:background_element="$graphic:background_ability_main"

        ohos:layout_alignment="horizontal_center"

        ohos:text="get请求"

        ohos:text_size="50"

        ohos:top_margin="80vp"

        />




</DirectionalLayout>
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package com.huawei.asynchttpharmonyos.slice;




import com.example.httplibrary.utils.AsyncHttpClient;

import com.example.httplibrary.utils.JsonHttpResponseHandler;

import com.example.httplibrary.utils.RequestParams;

import com.huawei.asynchttpharmonyos.ResourceTable;

import cz.msebera.android.httpclient.Header;

import ohos.aafwk.ability.AbilitySlice;

import ohos.aafwk.content.Intent;

import ohos.agp.components.Component;

import ohos.agp.components.Text;

import ohos.hiviewdfx.HiLog;

import ohos.hiviewdfx.HiLogLabel;




public class MainAbilitySlice extends AbilitySlice {




    private Text tvRequest,tvResult;




    private static final String TAG = "MainAbilitySlice";




    private static final HiLogLabel label=new HiLogLabel(HiLog.DEBUG,0x00100,"async-http");

    @Override

    public void onStart(Intent intent) {

        super.onStart(intent);

        super.setUIContent(ResourceTable.Layout_ability_main);

        initView();

        initListener();

    }




    private void initView() {

        tvResult = (Text) findComponentById(ResourceTable.Id_tvResult);

        tvRequest = (Text) findComponentById(ResourceTable.Id_tvRequest);

    }




    private void initListener() {

        tvRequest.setClickedListener(new Component.ClickedListener() {

            @Override

            public void onClick(Component component) {

                String url="https://apis.juhe.cn/simpleWeather/query";

                String key="32becf485f7f174d4385957b62f28f61";
                 //这里获取AsyncHttpClient实例， 这个类提供了get post delete put 请求对外的接口方法

                    AsyncHttpClient client=new AsyncHttpClient();
 
                 //这里是我们包装参数的实体类

                    RequestParams params=new RequestParams();

                    params.put("city","西安");

                    params.put("key",key);
                 /这里是实现get请求的方，JsonHttpResponseHandler会重写请求成功的onSuccess和onFailure两个方法，两个方法内部做具体业务逻辑

                    client.get(url,params, new JsonHttpResponseHandler() {

                        @Override

                        public void onSuccess(int statusCode, Header[] headers, String responseString) {

                            super.onSuccess(statusCode, headers, responseString);

                            HiLog.error(label,"zel-onSuccess:"+responseString,responseString);

                            // 通知主线程更新UI

                             getUITaskDispatcher().asyncDispatch(new Runnable() {

                                @Override

                                public void run() {
                                 // 这里具体业务Text文本显示请求数据

                                    tvResult.setText(responseString);

                                }

                            });

                        }




                        @Override

                        public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {

                            super.onFailure(statusCode, headers, responseString, throwable);

                            HiLog.error(label,"zel-onFailure:"+responseString,responseString);

                        }

                    });




            }

        });

    }




    @Override

    public void onActive() {

        super.onActive();

    }




    @Override

    public void onForeground(Intent intent) {

        super.onForeground(intent);

    }

}
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