android下載下傳新版本并更新（DownLoadManager、HttpURLConnection）

一、使用HttpURLConnection下載下傳并更新

1、下載下傳APK檔案

private File download() {

        try {
            URL url = new URL("要下載下傳apk檔案的路徑");
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setConnectTimeout();
            connection.setRequestMethod("GET");
            InputStream inputStream = null;
            Log.e("------->","connection.getResponseCode()"+connection.getResponseCode());
            if (connection.getResponseCode() == ) {
                int fileSize = connection.getContentLength() / ;
                Log.e("------->","fileSize"+fileSize);
                progressDialog.setMax(fileSize);
                int totla = ;
                inputStream = connection.getInputStream();
                File file = new File(SAVE_PATH);
                FileOutputStream fos = new FileOutputStream(file);
                byte[] bytes = new byte[];
                int len = ;
                while ((len = inputStream.read(bytes)) != -) {
                    fos.write(bytes, , len);
                    totla += (len / );
                    progressDialog.setProgress(totla);
                }
                //别忘了重新整理哈
                fos.flush();
                fos.close();
                inputStream.close();
                progressDialog.dismiss();
                return file;
            }

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
           

2、安裝apk檔案

Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
//下載下傳的apk檔案（download方法傳回的File檔案）
intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");
startActivity(intent);
           

二、使用DownLoadManager下載下傳并更新

利用這個DownLoadManager方法下載下傳，會以通知的方式顯示，是以應用到廣播來通知下載下傳完畢。

1、使用DownLoadManager下載下傳檔案，并将downLoadID存到本地

public class DownloadAppUtils {

    private static final String TAG = DownloadAppUtils.class.getSimpleName();
    public static long downloadUpdateApkId = -;//下載下傳更新Apk 下載下傳任務對應的Id
    public static String downloadUpdateApkFilePath;//下載下傳更新Apk 檔案路徑

    /**
     * 通過浏覽器下載下傳APK包
     * @param context
     * @param url
     */
    public static void downloadForWebView(Context context, String url) {
        Uri uri = Uri.parse(url);
        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setDataAndType(Uri.fromFile(new File(Environment
                        .getExternalStorageDirectory(), "tmp.apk")),
                "application/vnd.android.package-archive");
        context.startActivity(intent);
    }


    /**
     * 下載下傳更新apk包
     * 權限:1,<uses-permission android:name="android.permission.DOWNLOAD_WITHOUT_NOTIFICATION" />
     * @param context
     * @param url
     */
    public static void downloadForAutoInstall(Context context, String url, String fileName, String title) {
        if (TextUtils.isEmpty(url)) {
            return;
        }
        try {
            Uri uri = Uri.parse(url);
            DownloadManager downloadManager = (DownloadManager) context
                    .getSystemService(Context.DOWNLOAD_SERVICE);
            DownloadManager.Request request = new DownloadManager.Request(uri);
            //在通知欄中顯示
            request.setVisibleInDownloadsUi(true);
            request.setTitle(title);
            String filePath = null;
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            //外部存儲卡
            filePath = Environment.getExternalStorageDirectory().getAbsolutePath();

            } else {
                return;
            }
            downloadUpdateApkFilePath = filePath + File.separator + fileName;
            // 若存在，則删除
            deleteFile(downloadUpdateApkFilePath);
            Uri fileUri = Uri.parse("file://" + downloadUpdateApkFilePath);
            request.setDestinationUri(fileUri);
            downloadUpdateApkId = downloadManager.enqueue(request);
        } catch (Exception e) {
            e.printStackTrace();
            downloadForWebView(context, url);
        }
    }


    private static boolean deleteFile(String fileStr) {
        File file = new File(fileStr);
        return file.delete();
    }
}
           

2、定義廣播

public class ApkInstallReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        Cursor c=null;
        try {
            if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(intent.getAction())) {
                if (DownloadAppUtils.downloadUpdateApkId >= ) {
                    long downloadId = DownloadAppUtils.downloadUpdateApkId;
                    DownloadManager.Query query = new DownloadManager.Query();
                    query.setFilterById(downloadId);
                    DownloadManager downloadManager = (DownloadManager) context
                            .getSystemService(Context.DOWNLOAD_SERVICE);
                    c = downloadManager.query(query);
                    if (c.moveToFirst()) {
                        int status = c.getInt(c
                                .getColumnIndex(DownloadManager.COLUMN_STATUS));
                        if (status == DownloadManager.STATUS_FAILED) {
                            downloadManager.remove(downloadId);

                        } else if (status == DownloadManager.STATUS_SUCCESSFUL) {
                            if (DownloadAppUtils.downloadUpdateApkFilePath != null) {
                                Intent i = new Intent(Intent.ACTION_VIEW);
                                i.setDataAndType(
                                        Uri.parse("file://"
                                                + DownloadAppUtils.downloadUpdateApkFilePath),
                                        "application/vnd.android.package-archive");
                                i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                                context.startActivity(i);
                                PreferenceFlag.getInstance().setRedDotFlag(false);
                            }
                        }
                    }
                }
            }

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

3、在AndroidManifest中注冊廣播（兩種方式）

方式一：

<receiver android:name=".receiver.ApkInstallReceiver">
    <intent-filter>
          <action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
    </intent-filter>
</receiver>
           

方式二：

ApkInstallReceiver receiver = new ApkInstallReceiver();
 IntentFilter intent = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
 registerReceiver(receiver, intent);