檢測應用的當前版本號。與服務端最新版本號進行比較。
/**
* 獲取版本號 需要在Activity 中使用
* @return 當前應用的版本號
*/
public String getVersion() {
try {
PackageManager manager = this.getPackageManager();
PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);
String version = info.versionName;
return version;
} catch (Exception e) {
e.printStackTrace();
return "獲取失敗";
}
}檢測本地版本號低於最新版本時。需要更新。 如下啓動service
Intent intent = new Intent(SetActivity.this, DownAPKService.class);
apkDownloadPath=new String();
intent.putExtra("apk_url",apkDownloadPath);
startService(intent);package com.xx.xx;
import java.io.File;
import java.text.DecimalFormat;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Environment;
import android.os.IBinder;
import android.os.Vibrator;
import android.support.v4.app.NotificationCompat;
import android.widget.Toast;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.HttpHandler;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
/**
* @Title:DownAPKService.java
* @Description:專用下載APK文件Service工具類,通知欄顯示進度,下載完成震動提示,並自動打開安裝界面(配合xUtils快速開發框架)
*
* 需要添加權限：
* <uses-permission android:name="android.permission.INTERNET" />
* <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
* <uses-permission android:name="android.permission.VIBRATE" />
*
* 需要在<application></application>標籤下注冊服務
*
* 可以在142行代碼：builder.setSmallIcon(R.drawable.ic_launcher);中修改自己應用的圖標
* @author LEI-LEI
* @version 1.0
* 2016-7-6 下午4:54:16
*/
public class DownAPKService extends Service {
private final int NotificationID = 0x10000;
private NotificationManager mNotificationManager = null;
private NotificationCompat.Builder builder;
private HttpHandler<File> mDownLoadHelper;
// 文件下載路徑
private String APK_url = "";
// 文件保存路徑(如果有SD卡就保存SD卡,如果沒有SD卡就保存到手機包名下的路徑)
private String APK_dir = "";
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
initAPKDir();// 創建保存路徑
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
System.out.println("onStartCommand");
// 接收Intent傳來的參數:
// APK_url = intent.getStringExtra("apk_url");
DownFile(<span style="font-family: Arial, Helvetica, sans-serif;">APK_url </span>, APK_dir + "Club.apk");
return super.onStartCommand(intent, flags, startId);
}
private void initAPKDir() {
/**
* 創建路徑的時候一定要用[/],不能使用[\],但是創建文件夾加文件的時候可以使用[\].
* [/]符號是Linux系統路徑分隔符,而[\]是windows系統路徑分隔符 Android內核是Linux.
*/
if (isHasSdcard())// 判斷是否插入SD卡
{
APK_dir = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Club/download/";// 保存到SD卡路徑下
}
else{
APK_dir = getApplicationContext().getFilesDir().getAbsolutePath() + "/Club/download/";// 保存到app的包名路徑下
}
File destDir = new File(APK_dir);
if (!destDir.exists()) {// 判斷文件夾是否存在
destDir.mkdirs();
}
}
/**
*
* @Description:判斷是否插入SD卡
*/
private boolean isHasSdcard() {
String status = Environment.getExternalStorageState();
if (status.equals(Environment.MEDIA_MOUNTED)) {
return true;
} else {
return false;
}
}
private void DownFile(String file_url, String target_name) {
mDownLoadHelper = new HttpUtils().download(file_url, target_name, true, true, new RequestCallBack<File>() {
@Override
public void onStart() {
super.onStart();
System.out.println("開始下載文件");
mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
builder = new NotificationCompat.Builder(getApplicationContext());
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setTicker("正在下載新版本");
builder.setContentTitle(getApplicationName());
builder.setContentText("正在下載,請稍後...");
builder.setNumber(0);
builder.setAutoCancel(true);
mNotificationManager.notify(NotificationID, builder.build());
}
@Override
public void onLoading(long total, long current, boolean isUploading) {
super.onLoading(total, current, isUploading);
System.out.println("文件下載中");
int x = Long.valueOf(current).intValue();
int totalS = Long.valueOf(total).intValue();
builder.setProgress(totalS, x, false);
builder.setContentInfo(getPercent(x, totalS));
mNotificationManager.notify(NotificationID, builder.build());
}
@Override
public void onSuccess(ResponseInfo<File> responseInfo) {
System.out.println("文件下載完成");
Intent installIntent = new Intent(Intent.ACTION_VIEW);
System.out.println(responseInfo.result.getPath());
Uri uri = Uri.fromFile(new File(responseInfo.result.getPath()));
installIntent.setDataAndType(uri, "application/vnd.android.package-archive");
installIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent mPendingIntent = PendingIntent.getActivity(DownAPKService.this, 0, installIntent, 0);
builder.setContentText("下載完成,請點擊安裝");
builder.setContentIntent(mPendingIntent);
mNotificationManager.notify(NotificationID, builder.build());
// 震動提示
Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(1000L);// 參數是震動時間(long類型)
stopSelf();
startActivity(installIntent);// 下載完成之後自動彈出安裝界面
mNotificationManager.cancel(NotificationID);
}
@Override
public void onFailure(HttpException error, String msg) {
System.out.println("文件下載失敗");
mNotificationManager.cancel(NotificationID);
Toast.makeText(getApplicationContext(), "下載失敗，請檢查網絡！", Toast.LENGTH_SHORT).show();
}
@Override
public void onCancelled() {
super.onCancelled();
System.out.println("文件下載結束，停止下載器");
mDownLoadHelper.cancel();
}
});
}
/**
*
* @param x
* 當前值
* @param total
* 總值
* [url=home.php?mod=space&uid=7300]@return[/url] 當前百分比
* @Description:返回百分之值
*/
private String getPercent(int x, int total) {
String result = "";// 接受百分比的值
double x_double = x * 1.0;
double tempresult = x_double / total;
// 百分比格式，後面不足2位的用0補齊 ##.00%
DecimalFormat df1 = new DecimalFormat("0.00%");
result = df1.format(tempresult);
return result;
}
/**
* @return
* @Description:獲取當前應用的名稱
*/
private String getApplicationName() {
PackageManager packageManager = null;
ApplicationInfo applicationInfo = null;
try {
packageManager = getApplicationContext().getPackageManager();
applicationInfo = packageManager.getApplicationInfo(getPackageName(), 0);
} catch (PackageManager.NameNotFoundException e) {
applicationInfo = null;
}
String applicationName = (String) packageManager.getApplicationLabel(applicationInfo);
return applicationName;
}
@Override
public void onDestroy() {
super.onDestroy();
stopSelf();
}
}