版本更新在后台需要慢慢进行，所以IntentService很适合进行版本的更新操作，需要的技术：广播 服务
1.写一个服务类 用于检查是否有版本的更新，如果有新版本的话发个广播 该广播用于进行弹出对话框让用户进行选择下载或者是忽略
package com.yafeng.service;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.IntentService;
import android.content.DialogInterface;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;
import com.google.gson.ExclusionStrategy;
import com.google.gson.FieldAttributes;
import com.google.gson.GsonBuilder;
import com.yafeng.activity.LoginActivity;
import com.yafeng.activity.MainActivity;
import com.yafeng.dao.DbUtils;
import com.yafeng.entity.Order;
import com.yafeng.entity.ThreeAddress;
import com.yafeng.entity.User;
import com.yafeng.entity.VersionEntity;
import com.yafeng.http.HttpConfig;
import com.yafeng.http.OkManager;
import com.yafeng.http.execption.OkHttpException;
import com.yafeng.http.request.CommonRequest;
import com.yafeng.http.request.RequestParams;
import com.yafeng.http.response.JsonCallback;
import com.yafeng.utils.GsonBean;
import com.yafeng.utils.GsonBeanList;
import com.yafeng.utils.PackAgesUtils;
import org.greenrobot.greendao.query.QueryBuilder;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import okhttp3.Request;
/**
* Created by Administrator on 2017-01-04.
*/
public class CheckVersionService extends IntentService{
private static final String TAG = CheckVersionService.class.getSimpleName();
public static String RECEIVER_CHECK_VERSION = "com.yafeng.service.CheckVersionService";
/**
* Creates an IntentService. Invoked by your subclass's constructor.
*
* to name the worker thread, important only for debugging.
*/
public CheckVersionService() {
super("CheckVersionService");
}
@Override
protected void onHandleIntent(Intent intent) {
Log.i(TAG, "CheckVersionService onHandleIntent");
int fromSource = intent.getIntExtra("fromSource", 0);
int version = PackAgesUtils.getVersionCode(this);
Log.e("ZS","版本号："+version);
checkVersion(version); }
/**
* 检查版本更新
*/
protected void checkVersion(int version){ Map<String,String> map = new HashMap<>();
map.put("version",version);
Request request = CommonRequest.postRequest(HttpConfig.BASE_URL+ HttpConfig.CHECK_VERSION,new RequestParams(map));
OkManager.post(request, new JsonCallback() {
@Override
public void onFaile(OkHttpException e) {
Log.e("ZS","错误："+e.getEcode()+e.getEmsg());
}
@Override
public void onSuccess(String json) {
Log.e("ZS","成功："+json);
Intent broad = new Intent();
broad.setAction(RECEIVER_CHECK_VERSION);
try {
JSONObject jsonObject=new JSONObject(json);
int status=jsonObject.optInt("stauts");
if(status==7){
broad.putExtra("url", "error");
Log.e("ZS","检查版本错误");
}else if(status==9){
Log.e("ZS","当前为最新版本");
broad.putExtra("url","new");
}else if(status==8){
JSONObject jsonData=jsonObject.optJSONObject("data");
String url=jsonData.optString("url");
Log.e("ZS","需要网络获取最新版本");
broad.putExtra("url", url);
}
sendBroadcast(broad);
} catch (JSONException e) {
e.printStackTrace();
}
}
});
}
}
2.广播接收类 用于接收版本更新服务类的数据 提示用户进行下载class VersionReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
Log.e(TAG, "VersionReceiver onReceive");
String url=intent.getStringExtra("url");
if(url.equals("error")){
toast("请求网络发生错误");
}else if(url.equals("new")){
toast("当前为最新版本");
}else if(url.startsWith("http")){
Log.e(TAG, "url:"+url);
showNoticeDialog(url);
}else if(url.equals("dialog_dismis")){
mProgressDialog.dismiss();
}
}
}private ProgressDialog mProgressDialog;
private Dialog noticeDialog;
public void showNoticeDialog(final String url)
{
AlertDialog.Builder builder = new AlertDialog.Builder(BaseActivity.this);
builder.setTitle("软件版本更新");
builder.setPositiveButton("下载", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
Intent downIntent = new Intent(BaseActivity.this, DownloadApkService.class);
downIntent.putExtra("url",url);
startService(downIntent);
mProgressDialog=new ProgressDialog(BaseActivity.this);
mProgressDialog.setMessage("正在下载，请稍后...");
mProgressDialog.show();
}
});
builder.setNegativeButton("退出", new DialogInterface.OnClickListener() //以后再说
{
public void onClick(DialogInterface dialog, int which)
{
noticeDialog.dismiss();
}
});
noticeDialog = builder.create();
if (!isFinishing()&¬iceDialog != null && !noticeDialog.isShowing())
{
noticeDialog.show();
}
}
3.下载服务类(如果用户选择下载之后进行后台任务的下载工作 下载完成后发广播告诉广播接收者已经下载
完毕，并结束进度条)package com.yafeng.service;
import android.app.IntentService;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* apk下载服务类
* Created by Administrator on 2017-01-04.
*/
public class DownloadApkService extends IntentService{
private static final String TAG=DownloadApkService.class.getSimpleName();
private static final String savePath = Environment
.getExternalStorageDirectory().getAbsolutePath() + "/yfApp";
private static final String saveFileName = savePath + "/yf.apk";
private ProgressDialog dialog=null;
/**
* Creates an IntentService. Invoked by your subclass's constructor.
*
*
*/
public DownloadApkService() {
super(TAG);
}
@Override
protected void onHandleIntent(Intent intent) {
Log.i(TAG, "DownloadApkService onHandleIntent");
String apkUrl = intent.getStringExtra("url");
try {
URL url = new URL(apkUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.connect();
// int length = conn.getContentLength();
InputStream is = conn.getInputStream();
File file = new File(savePath);
if (!file.exists()) {
file.mkdirs();
}
String apkFile = saveFileName;
File ApkFile = new File(apkFile);
if (!ApkFile.exists()) {
ApkFile.createNewFile();
}
FileOutputStream fos = new FileOutputStream(ApkFile);
byte[] buf = new byte[1024];
int len = 0;
while ((len = is.read(buf)) != -1) {
fos.write(buf, 0, len);
fos.flush();
}
fos.close();
is.close();
Intent broad = new Intent();
broad.setAction(CheckVersionService.RECEIVER_CHECK_VERSION);
broad.putExtra("url", "dialog_dismis");
sendBroadcast(broad);
installApk();
} catch (Exception e) {
e.printStackTrace();
Log.v("Error", e.getMessage());
}
}
/**
* 安装apk
*
*/
private void installApk() {
File apkfile = new File(saveFileName);
if (!apkfile.exists()) {
return;
}
Log.e("安装Apk","安装Apk");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(apkfile), "application/vnd.android.package-archive");
//安装时加此句 否则出现异常
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(intent);
}
}4.进行广播的注册 和服务的注册
public void registerVersionBroad(){
IntentFilter filt = new IntentFilter(CheckVersionService.RECEIVER_CHECK_VERSION);
versionReceiver = new VersionReceiver();
registerReceiver(versionReceiver, filt);
Log.i(TAG, "registerVersionBroad");
}<service android:name=".service.CheckVersionService"></service> <service android:name=".service.DownloadApkService"></service>
5.检查版本的更新 开启服务
private void checkVersion(){
Intent verService = new Intent(this, CheckVersionService.class);
verService.putExtra("fromSource", 0);
startService(verService);
}
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