Question

我需要在私有应用程序存储中下载文件。由于Androids下载管理器无法做到这一点，我使用的是这个库：

https://github.com/novoda/download-manager

我可以开始下载，但下载完成后我不会收到广播。有没有人使用过此库并可以提供帮助。

这就是我现在发送听众的方式：

 private void setupDownloadingExample() {
    Uri uri = Uri.parse(BIG_FILE);
    final Request request = new Request(uri)
            .setDestinationInInternalFilesDir(Environment.DIRECTORY_MOVIES, "penguins.dat")
            .setNotificationVisibility(NotificationVisibility.ACTIVE_OR_COMPLETE)
            .setTitle("Family of Penguins")
            .setDescription("These are not the beards you're looking for")
            .setBigPictureUrl(PENGUINS_IMAGE);

    findViewById(R.id.main_download_button).setOnClickListener(
            new View.OnClickListener() {
                @Override
                public void onClick(@NonNull View v) {
                    onComplete = new BroadcastReceiver() {
                        @Override
                        public void onReceive(Context context, Intent intent) {
                            Toast.makeText(MainActivity.this, "Done", Toast.LENGTH_SHORT).show();
                        }
                    };
                    (MainActivity.this).registerReceiver(onComplete,
                            new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
                    downloadManager.enqueue(request);
                }
            });
}

代码段来自库提供的示例。

Answer 1

从回购中的演示中，您需要使用广播接收器来收听下载事件：

https://github.com/novoda/download-manager/tree/master/demo-extended

在您的清单中注册如下：

https://github.com/novoda/download-manager/blob/master/demo-extended/src/main/AndroidManifest.xml#L63-L69

<receiver
  android:name="com.novoda.downloadmanager.demo.extended.DownloadBatchStartedReceiver"
  android:exported="false">
  <intent-filter>
    <action android:name="com.novoda.downloadmanager.action.BATCH_FIRST_TIME_START" />
  </intent-filter>
</receiver>

然后你可以听完下载完成：

https://github.com/novoda/download-manager/blob/master/demo-extended/src/main/java/com/novoda/downloadmanager/demo/extended/DownloadBatchStartedReceiver.java

public class DownloadBatchCompletionReceiver extends BroadcastReceiver {

    private static final int UNKNOWN_BATCH_ID = -1;
    private static final String TAG = DownloadBatchCompletionReceiver.class.getSimpleName();

    @Override
    public void onReceive(@NonNull Context context, @NonNull Intent intent) {
        long batchId = intent.getLongExtra(DownloadManager.EXTRA_BATCH_ID, UNKNOWN_BATCH_ID);
        Toast.makeText(context, "Batch completed with id: " + batchId, Toast.LENGTH_SHORT).show();
        Log.d(TAG, "Batch completed: " + batchId);
    }

}

所有下载都被视为批量处理，即使它只下载了1个文件。

Novoda Download Manager，如何设置下载完整的监听器

1 个答案: