安卓简单的应用——天气预报_csdn安卓天气预报tomcat

简单的事件逻辑：

从网上拿去天气数据，展示

然后做了一个数据清洗，然后还保存了一下最后的状态，以至于最后的时候可以打开所见即所得。

至于背景啥的，拿到源码以后自己改。

package com.example.weather_forecast;
 
import androidx.appcompat.app.AppCompatActivity;
 
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EdgeEffect;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
 
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;
 
public class MainActivity extends AppCompatActivity {
 
    EditText editText;
    Button button;
    TextView tishi;
    ListView listView;
    SharedPreferences spfcode,spf;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initDate();
        chaxun();
        moren();
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String tempcity = editText.getText().toString();
                wealthinit(spfcode.getString(tempcity,"101010100"));
                tishi.setText("当前查询城市："+ tempcity);
                if(!spfcode.getString(tempcity,"").equals("")){
                    SharedPreferences.Editor editor = spf.edit();
                    editor.putString("1",tempcity);
                    editor.commit();
                }
            }
        });
    }
 
    private void moren() {
        if(spf.getString(1+"","").equals("")){
            SharedPreferences.Editor editor = spf.edit();
            editor.putString("1","北京");
            editor.commit();
        }
        wealthinit(spfcode.getString(spf.getString("1","北京"),"101010100"));
    }
 
    private void initDate() {
        editText = findViewById(R.id.per_gaichenshi);
        button = findViewById(R.id.per_citytijiao);
        tishi = findViewById(R.id.tishi);
        listView = findViewById(R.id.per_list);
 
        spfcode = getSharedPreferences("Citycode",MODE_PRIVATE);
        spf = getSharedPreferences("Personal",MODE_PRIVATE);
    }
    class MyTask extends AsyncTask<String,Void,String> {
 
 
        //获取json数据
        @Override
        protected String doInBackground(String... strings) {
 
            String jsonStr= null;
            try {
                jsonStr = Httputils.getJson(strings[0]);
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println(jsonStr);
 
            return jsonStr;
        }
        //解析json数据，显示出来
        @Override
        protected void onPostExecute(String s) {
            try {
                Wealther[] wealthers = Httputils.parseJson(s);
                List<Wealther> list = Arrays.asList(wealthers);
                Tianqiadapt adapter = new Tianqiadapt(MainActivity.this, list);
                listView.setAdapter(adapter);
 
                int[] highTemp = new int[list.size()];
                int[] lowTemp = new int[list.size()];
                for(int i=0;i<list.size();i++) {
                    Wealther temp = list.get(i);
                    highTemp[i] = Integer.parseInt(temp.getTem_1());
                    lowTemp[i] = Integer.parseInt(temp.getTem_2());
                }
 
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
 
    private void wealthinit(String citycode) {
        try {
            new MyTask().execute("https://v0.yiketianqi.com/api?unescape=1&version=v91&appid=43656176&appsecret=I42og6Lm&ext=&cityid="+citycode);
//            System.out.println(tempwealth);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    private void chaxun(){
        InputStream is=getResources().openRawResource(R.raw.temp);
        InputStreamReader isr= null;//包装成IO流
        try {
            isr = new InputStreamReader(is,"UTF-8");
            BufferedReader bfr=new BufferedReader(isr);  //包装成内存流
            String instring="";
            SharedPreferences.Editor editor = spfcode.edit();
            while((instring=bfr.readLine())!=null) {
                String[] split = instring.split("=");
                if(split.length==2){
                    editor.putString(split[1],split[0]);
                    editor.commit();
                }
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}

软件源码

这一段是下载的，至于其他的嘛似乎不是很重要，随便整整也能出来。

package com.example.weather_forecast;
 
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
 
 
import org.json.JSONArray;
import org.json.JSONObject;
 
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
 
import okhttp3.Call;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
 
public class Httputils {
 
    public static Bitmap getImage(String url) throws Exception {
        Bitmap bitmap=null;
        URL a=new URL(url);
 
        HttpURLConnection connection= (HttpURLConnection) a.openConnection();
 
        int statusCode=connection.getResponseCode();
        if(statusCode==HttpURLConnection.HTTP_OK){
            InputStream inputStream=connection.getInputStream();
            bitmap= BitmapFactory.decodeStream(inputStream);
            inputStream.close();
            connection.disconnect();
        }
        return bitmap;
 
    }
    //获取json数据
    public static String getJson(String url) throws Exception {
 
        URL a=new URL(url);
 
        HttpURLConnection connection= (HttpURLConnection) a.openConnection();
        int statusCode=connection.getResponseCode();
        if(statusCode==HttpURLConnection.HTTP_OK){
            InputStream inputStream=connection.getInputStream();
            StringBuffer sb=new StringBuffer();
            byte[] buff=new byte[1024];
            int len;
            while((len=inputStream.read(buff))!=-1){
                sb.append(new String(buff,0,len));
            }
 
            inputStream.close();
            connection.disconnect();
 
            return sb.toString();
        }
 
        return null;
    }
 
    //解析json数据
    public static Wealther[] parseJson(String jsonStr) throws Exception {
        Wealther[] wealthers = new Wealther[7];
        for(int i=0;i<wealthers.length;i++){
            wealthers[i] = new Wealther();
        }
        JSONObject object=new JSONObject(jsonStr);
 
        wealthers[0].setUpdate(object.get("update_time").toString());
        wealthers[0].setCity(object.get("city").toString());
 
        JSONArray objects = object.getJSONArray("data");
        for(int i=0;i<objects.length();i++){
            JSONObject temp = objects.getJSONObject(i);
            if(i!=0){
                wealthers[i].setUpdate(wealthers[0].getUpdate());
                wealthers[i].setCity(wealthers[0].getCity());
            }
            wealthers[i].setDate(temp.get("day").toString());
            wealthers[i].setWealth(temp.getString("wea"));
            wealthers[i].setTem_1(temp.getString("tem"));
            wealthers[i].setTem_2(temp.getString("tem1"));
            wealthers[i].setTem_3(temp.getString("tem2"));
            wealthers[i].setShidu(temp.getString("humidity"));
            wealthers[i].setFenxiang(temp.getString("win"));
            wealthers[i].setSunup(temp.getString("sunrise"));
            wealthers[i].setSundown(temp.getString("sunset"));
            wealthers[i].setMiaoshu(temp.getString("narrative"));
            wealthers[i].setMoonup(temp.getString("moonrise"));
            wealthers[i].setMoondown(temp.getString("moonset"));
            wealthers[i].setZiwaixian(temp.getString("uvDescription"));
        }
        return wealthers;
    }
 
    //OkHttp网络访问：get请求
    public static String getByOkhttp(String url) throws Exception {
    // 1 OkHttpClient对象
        OkHttpClient client=new OkHttpClient();
        //2 Request对象
        Request request=new Request.Builder().url(url).build();
 
        //3 Request封装为Call
        Call call=client.newCall(request);
        //4 发送请求,获取响应
        Response response = call.execute();
        int code=response.code();
        String res=response.body().string();
        return res;
 
 
 
 
    }
 
    public static Bitmap getOkHttpImage(String str) throws Exception {
        OkHttpClient client=new OkHttpClient();
        Request request=new Request.Builder().url(str).build();
        Response response=client.newCall(request).execute();
        InputStream inputStream=response.body().byteStream();
        Bitmap bitmap=BitmapFactory.decodeStream(inputStream);
        return bitmap;
 
 
    }
 
    //Gson解析json
//    public static Weather parsonGson(String jsonStr) throws Exception {
//        JSONObject object=new JSONObject(jsonStr);
//
//        JSONObject w=object.getJSONObject("weatherinfo");
//
//        Gson gson=new Gson();
//
//        Weather weather=gson.fromJson(w.toString(),Weather.class);
//
//
//        return weather;
//
//    }
 
 
}

然后我还是把安卓源码丢上来，说不定哪一天想拿起来改改，hhhhhhhhh.

某盘链接.

链接：https://pan.baidu.com/s/1LdLJcf2ZgIzyDc9HTzfk9g 
提取码：hxr1

软件如下

某盘链接，仅限十人，因为这个请求次数不多，而且这个是用来练练手的项目，随便看看，hhhhhhhh。

链接：https://pan.baidu.com/s/1aQ5nn_GKP-rCe7j9LTNg9A 
提取码：kn8r

以上使用资源接口引用于：

免费天气API接口|天气预报接口|全球天气API接口|气象预警|空气质量 (tianqiapi.com)