TermApp/app/src/main/java/com/xypower/mpapp/AppMaster.java

package com.xypower.mpapp;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.os.PowerManager;
import android.text.TextUtils;
import android.util.Pair;

import com.dev.devapi.api.SysApi;

import org.json.JSONObject;

public class AppMaster {

    private MicroPhotoService mService;
    private String mCmdid;
    private PowerManager.WakeLock mWakelock;

    private final static String MASTER_URL = "http://180.166.218.222:40101/?cmdid=";

    public AppMaster(MicroPhotoService service, String cmdid) {

        PowerManager powerManager = (PowerManager) service.getSystemService(Context.POWER_SERVICE);
        mWakelock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE, "com.xinyingpower.microphoto:Upgrader");

        mService = service;
        mCmdid = cmdid;
    }

    @Override
    protected void finalize() {
        try {
            if (mWakelock != null) {
                mWakelock.release();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            mWakelock = null;
        }
        mService = null;
    }

    public void start() {

        new Thread(new Runnable() {
            @Override
            public void run() {
                HttpURLConnection httpURLConnection = null;
                InputStream inputStream = null;

                try {
                    String url = MASTER_URL + URLEncoder.encode(mCmdid, "UTF-8");
                    URL mUrl = new URL(url);
                    httpURLConnection = (HttpURLConnection) mUrl.openConnection();
                    httpURLConnection.setConnectTimeout(15000);
                    httpURLConnection.setReadTimeout(15000);
                    httpURLConnection.setRequestMethod("POST");
                    // httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
                    httpURLConnection.setDoInput(true);
                    httpURLConnection.setDoOutput(true);

                    List<Pair<String, String>> postParams = new ArrayList<>();
                    postParams.add(new Pair<String, String>("id", mCmdid));
                    // postParams(httpURLConnection.getOutputStream(), postParams);
                    buildParams(httpURLConnection.getOutputStream());
                    httpURLConnection.connect();
                    inputStream = httpURLConnection.getInputStream();

                    int responseCode = httpURLConnection.getResponseCode();

                    if (responseCode == HttpURLConnection.HTTP_OK) {
                        //在子线程中不能操作UI线程，通过handler在UI线程中进行操作
                        // handler.sendEmptyMessage(0x00);
                        String response = convertStreamToString(inputStream);
                        process(response);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }

            }
        }).start();
    }

    private void process(String content) {
        if (TextUtils.isEmpty(content)) {
            return;
        }

        try {
            JSONObject jsonObject = new JSONObject(content);
            int isUpgrade = jsonObject.optInt("isUpgrade", 0);
            String url = jsonObject.optString("url", null);

            if (isUpgrade == 1 && !TextUtils.isEmpty(url)) {
                upgradeApp(url);
            }

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

    }

    private void upgradeApp(String url) {

        FileDownloader dl = new FileDownloader();
        File path = new File(MicroPhotoService.buildAppDir(mService.getApplicationContext()), "packages");
        if (!path.exists()) {
            path.mkdirs();
        }

        File file = new File(path, "app.apk");
        if (file.exists()) {
            file.delete();
        }
        String apkPath = file.getAbsolutePath();
        if (dl.download(url, apkPath)) {
            Context context = mService.getApplicationContext();
            SysApi.installApk(context, apkPath, context.getPackageName(), true);
        }
    }

    private void buildParams(OutputStream output) {
        BufferedWriter bufferedWriter = null;
        try {
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("id", mCmdid);

            bufferedWriter = new BufferedWriter(new OutputStreamWriter(output, "UTF-8"));
            bufferedWriter.write(jsonObject.toString());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (bufferedWriter != null) {
                    bufferedWriter.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    public static void postParams(OutputStream output, List<Pair<String, String>> paramsList) {

        BufferedWriter bufferedWriter = null;
        try {
            StringBuilder stringBuilder = new StringBuilder();
            for (Pair<String, String> pair : paramsList) {
                if (!TextUtils.isEmpty(stringBuilder)) {
                    stringBuilder.append("&");
                }
                stringBuilder.append(URLEncoder.encode(pair.first, "UTF-8"));
                stringBuilder.append("=");
                stringBuilder.append(URLEncoder.encode(pair.second, "UTF-8"));
                bufferedWriter = new BufferedWriter(new OutputStreamWriter(output, "UTF-8"));
                bufferedWriter.write(stringBuilder.toString());
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (bufferedWriter != null) {
                    bufferedWriter.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    private String convertStreamToString(InputStream inputStream) {
        BufferedReader bufferedReader = null;
        StringBuffer stringBuffer = new StringBuffer();
        String line;
        try {
            bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
            while ((line = bufferedReader.readLine()) != null) {
                stringBuffer.append(line).append("\n");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (bufferedReader != null) {
                    bufferedReader.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return stringBuffer.toString();
    }


}