我想从服务器下载使用下载管理器类Android应用程序，安装它，然后检测时，安装完成。我使用两个接收器：一个用于检测下载过程，并在其它用于检测安装过程。第一接收机工作正常，但第二个没有。我做错了什么？

 下载管理器DM =（下载管理器）DownloadApplicationActivity.this.getSystemService（Context.DOWNLOAD_SERVICE）;
DownloadManager.Request REQ =新DownloadManager.Request（Uri.parse（MY_LINK））;
req.setTitle（MY_TITLE）
                .setDescription（下载......）
                //下载包到/ SD卡/立即下载路径。
                .setDestinationInExternalPublicDir（
                        Environment.DIRECTORY_DOWNLOADS，
                        my_path的）;
        长时间排队= dm.enqueue（REQ）;
BroadcastReceiver的接收器=新的BroadcastReceiver（）{
@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
    串动= intent.getAction（）;
    如果（DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals（动作））{
        查询查询=新的Query（）;
        query.setFilterById（排队）;
        光标C = dm.query（查询）;
        如果（c.moveToFirst（））{
            INT参数：columnIndex = c.getColumnIndex（DownloadManager.COLUMN_STATUS）;
            如果（DownloadManager.STATUS_SUCCESSFUL == c.getInt（参数：columnIndex））{
                //显示一个通知栏。
                NotificationManager notificationManager =（NotificationManager）this.getSystemService（Context.NOTIFICATION_SERVICE）;
                通知通知=新的通知（R.drawable.icon，，System.currentTimeMillis的（））;

                notification.flags | = Notification.FLAG_AUTO_CANCEL;
                notification.flags | = Notification.FLAG_NO_CLEAR;
                意图I =新的意图（Intent.ACTION_VIEW）;
                //通知被点击时，安装应用程序。
                        i.setDataAndType（Uri.fromFile（新文件（环境
                                .getExternalStorageDirectory（）+ APP_PATH）），应用程序/ vnd.android.package存档）;
                        PendingIntent pendingIntent = PendingIntent.getActivity（
                                活性，0，I，0）;
                        notification.setLatestEventInfo（活动，MY_TEXT，MY_TEXT，pendingIntent）;
                        notification.number + = 1;
                        notificationManager.notify（0，通知）;
                        //我要检测的应用程序的安装，我注册一个东北接收器
                        registerReceiver（installReceiver，新的IntentFilter（Intent.ACTION_PACKAGE_ADDED））;
            }
        }
};

BroadcastReceiver的installReceiver =新的BroadcastReceiver（）{
@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
    串动= intent.getAction（）;
    如果（Intent.ACTION_PACKAGE_ADDED.equals（动作））{
        乌里数据= intent.getData（）;
        字符串的packageName = data.getEn codedSchemeSpecificPart（）;
        Log.i（已安装的软件包是：，+的packageName）;

            }
        }
};
 

解决方案

我解决我的问题，我补充

 的IntentFilter的IntentFilter =新的IntentFilter（）;
intentFilter.addAction（Intent.ACTION_PACKAGE_ADDED）;
intentFilter.addAction（Intent.ACTION_PACKAGE_INSTALL）;
intentFilter.addDataScheme（包）;
 

前行：

  registerReceiver（installReceiver，IntentFilter的）;
 

I am trying to download an Android app from a server using the DownloadManager class, install it and then detect when the installation is completed. I am using two receivers: one to detect the download process and the other to detect the install process. The first receiver works properly, but the second doesn't. What I am doing wrong?

DownloadManager dm = (DownloadManager) DownloadApplicationActivity.this.getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Request req = new DownloadManager.Request(Uri.parse(MY_LINK));
req.setTitle(MY_TITLE)
                .setDescription("Downloading ....")
                // download the package to the /sdcard/downlaod path.
                .setDestinationInExternalPublicDir(
                        Environment.DIRECTORY_DOWNLOADS,
                        MY_PATH);
        long enqueue = dm.enqueue(req);
BroadcastReceiver receiver= new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
        Query query = new Query();
        query.setFilterById(enqueue);
        Cursor c =dm.query(query);
        if (c.moveToFirst()) {
            int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_STATUS);
            if (DownloadManager.STATUS_SUCCESSFUL == c.getInt(columnIndex)) {
                // show a notification bar.
                NotificationManager notificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
                Notification notification = new Notification(R.drawable.icon,"",System.currentTimeMillis());

                notification.flags |= Notification.FLAG_AUTO_CANCEL;
                notification.flags |= Notification.FLAG_NO_CLEAR;
                Intent i = new Intent(Intent.ACTION_VIEW);
                // when the notification is clicked, install the app.
                        i.setDataAndType(Uri.fromFile(new File(Environment
                                .getExternalStorageDirectory() + APP_PATH)),"application/vnd.android.package-archive");
                        PendingIntent pendingIntent = PendingIntent.getActivity(
                                activity, 0, i, 0);
                        notification.setLatestEventInfo(activity, MY_TEXT, MY_TEXT,pendingIntent);
                        notification.number += 1;
                        notificationManager.notify( 0, notification);
                        //i want to detect the app's installation, I register a ne receiver
                        registerReceiver(installReceiver,new IntentFilter(Intent.ACTION_PACKAGE_ADDED));
            }
        }           
};  

BroadcastReceiver installReceiver= new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
        Uri data = intent.getData();
        String packageName = data.getEncodedSchemeSpecificPart();
        Log.i("The installed package is: ", "" + packageName);

            }
        }           
};

I solved my problem, I added

IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
intentFilter.addAction(Intent.ACTION_PACKAGE_INSTALL);
intentFilter.addDataScheme("package");

before the line :

registerReceiver(installReceiver, intentFilter);