FileProvider:发送文件时没有数据

我已经配置了一个FileProvider,我试图发送文件,但处理意图的外部应用程序(Google Drive等)会抛出一个错误,表明该意图中不包含任何数据。我在这里错过了什么?FileProvider:发送文件时没有数据

  File backupPath = new File(getContext().getFilesDir(), "backups"); 

File backupFile = new File(backupPath, clickedBackup.getFilename());

Uri contentUri = getUriForFile(getContext(), "com.test.app.fileprovider", backupFile);

// create new Intent

Intent intent = new Intent(Intent.ACTION_SEND);

// set flag to give temporary permission to external app to use your FileProvider

intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

intent.setDataAndType(

contentUri,

getContext().getContentResolver().getType(contentUri));

// validate that the device can open your File!

PackageManager pm = getActivity().getPackageManager();

if (intent.resolveActivity(pm) != null) {

startActivity(intent);

}

logcat中显示以下内容:

12-18 12:47:55.554 1698 2490 I ActivityManager: START u0 {act=android.intent.action.SEND dat=content://com.test.app.fileprovider/backups/20171918_121910.bak typ=application/octet-stream flg=0x3000001 cmp=com.google.android.apps.docs/.shareitem.UploadMenuActivity} from uid 10079 

内容URI对我来说很好,但由于某种原因,它不工作。有任何想法吗?

这里是提供者路径。

<paths> 

<files-path name="backups" path="backups/" />

</paths>

最后,提供者声明。

 <provider 

android:name="android.support.v4.content.FileProvider"

android:authorities="com.test.app.fileprovider"

android:grantUriPermissions="true"

android:exported="false">

<meta-data

android:name="android.support.FILE_PROVIDER_PATHS"

android:resource="@xml/exposed_filepaths" />

</provider>

UPDATE:logcat中也显示出其可能是或不是关键问题就在这里

12-18 13:21:23.739 4818 6764 E DataSourceHelper: Uploading single file but neither EXTRA_STREAM nor EXTRA_TEXT is specified. 

12-18 13:21:23.790 1431 1483 D gralloc_ranchu: gralloc_alloc: Creating ashmem region of size 8298496

12-18 13:21:23.796 1431 1483 I chatty : uid=1000(system) HwBinder:1431_1 identical 1 line

12-18 13:21:23.807 1431 1483 D gralloc_ranchu: gralloc_alloc: Creating ashmem region of size 8298496

12-18 13:21:23.824 4818 4818 E UploadMenuActivity: No files requested to be uploaded: android.intent.action.SEND

EDIT 2如下:添加这使得它工作得很好:

intent.putExtra(Intent.EXTRA_STREAM, contentUri); 

回答:

变化:

intent.setDataAndType(contentUri, getContext().getContentResolver().getType(contentUri)); 

到:

intent.setType(contentUri, "application/octet-stream"); 

intent.putExtra(Intent.EXTRA_STREAM, contentUri);

ACTION_SEND使用EXTRA_STREAM —不是Uri方面的的—用于通过Uri发送。而且由于您知道MIME类型,因此使用IPC调用通过ContentResolver派生它是没有意义的。

回答:

我认为你必须设置缺少的类型。尝试添加如下:

intent.setType("image/*|application/pdf|audio/*"); 

更多详情,请访问https://developer.android.com/training/sharing/send.html

以上是 FileProvider:发送文件时没有数据 的全部内容, 来源链接: utcz.com/qa/263102.html

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