[英]java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.intent.action.MEDIA_MOUNTED on KitKat only
I am using the DownloadManager
to download images off our server and I am placing the files in the externalFilesDir
.我正在使用DownloadManager
从我们的服务器下载图像,并将文件放在externalFilesDir
。
I am send out a broadcast intent because I don't want these downloaded images to appear in the gallery.我发送了一个广播意图,因为我不希望这些下载的图像出现在图库中。
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + context.getExternalFilesDir(null))));
I only tested this on my Galaxy S3 Jelly Bean 4.3 prior and it was working, but when I tested it on KitKat 4.4
it crashes the app.我之前只在我的 Galaxy S3 Jelly Bean 4.3 上测试过它并且它可以工作,但是当我在KitKat 4.4
上测试它时它使应用程序崩溃。
Is there a better way to not have the files downloaded from the DownloadManager not appear in the phone gallery?有没有更好的方法让从 DownloadManager 下载的文件不出现在手机图库中?
Stack Trace堆栈跟踪
06-05 17:34:41.940: E/AndroidRuntime(15410): FATAL EXCEPTION: main
06-05 17:34:41.940: E/AndroidRuntime(15410): Process: com.walintukai.lfdate, PID: 15410
06-05 17:34:41.940: E/AndroidRuntime(15410): java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.DOWNLOAD_COMPLETE flg=0x10 pkg=com.walintukai.lfdate (has extras) } in com.walintukai.lfdate.SocketIOService$1@42359f40
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:778)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.os.Handler.handleCallback(Handler.java:733)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.os.Handler.dispatchMessage(Handler.java:95)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.os.Looper.loop(Looper.java:136)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.app.ActivityThread.main(ActivityThread.java:5057)
06-05 17:34:41.940: E/AndroidRuntime(15410): at java.lang.reflect.Method.invokeNative(Native Method)
06-05 17:34:41.940: E/AndroidRuntime(15410): at java.lang.reflect.Method.invoke(Method.java:515)
06-05 17:34:41.940: E/AndroidRuntime(15410): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
06-05 17:34:41.940: E/AndroidRuntime(15410): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
06-05 17:34:41.940: E/AndroidRuntime(15410): at dalvik.system.NativeStart.main(Native Method)
06-05 17:34:41.940: E/AndroidRuntime(15410): Caused by: java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.intent.action.MEDIA_MOUNTED from pid=15410, uid=10135
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.os.Parcel.readException(Parcel.java:1465)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.os.Parcel.readException(Parcel.java:1419)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.app.ActivityManagerProxy.broadcastIntent(ActivityManagerNative.java:2390)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.app.ContextImpl.sendBroadcast(ContextImpl.java:1127)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.content.ContextWrapper.sendBroadcast(ContextWrapper.java:365)
06-05 17:34:41.940: E/AndroidRuntime(15410): at com.walintukai.lfdate.SocketIOService$1.onReceive(SocketIOService.java:111)
06-05 17:34:41.940: E/AndroidRuntime(15410): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:768)
06-05 17:34:41.940: E/AndroidRuntime(15410): ... 9 more
It seems that google is trying to prevent this from KITKAT.似乎谷歌正试图阻止 KITKAT 发生这种情况。
Looking at core/rest/AndroidManifest.xml you will notice that broadcast android.intent.action.MEDIA_MOUNTED
is protected now.查看core/rest/AndroidManifest.xml您会注意到广播android.intent.action.MEDIA_MOUNTED
现在受到保护。 Which means it is a broadcast that only the system can send.这意味着它是一个只有系统可以发送的广播。
<protected-broadcast android:name="android.intent.action.MEDIA_MOUNTED" />
The following should work for all versions:以下应该适用于所有版本:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
final Intent scanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
final Uri contentUri = Uri.fromFile(outputFile);
scanIntent.setData(contentUri);
sendBroadcast(scanIntent);
} else {
final Intent intent = new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory()));
sendBroadcast(intent);
}
If the above is not working try the following:如果上述方法不起作用,请尝试以下操作:
According to this post you need another way to fix it.根据这篇文章,您需要另一种方法来修复它。
Like using MediaScannerConnection
or ACTION_MEDIA_SCANNER_SCAN_FILE
.就像使用MediaScannerConnection
或ACTION_MEDIA_SCANNER_SCAN_FILE
。
MediaScannerConnection.scanFile(this, new String[] {
file.getAbsolutePath()},
null, new MediaScannerConnection.OnScanCompletedListener() {
public void onScanCompleted(String path, Uri uri)
{
}
});
I know it's late but try this, it works in every version:我知道已经晚了,但试试这个,它适用于每个版本:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
Uri contentUri = Uri.fromFile(out); // out is your output file
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
} else {
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,
Uri.parse("file://" + Environment.getExternalStorageDirectory())));
}
As a variant作为变种
public static void refreshDir(@NonNull Context context, @NonNull File dir) {
notifyFileDeleted(context, dir);
File[] files = dir.listFiles();
if (files != null) {
for (File file : files) {
if (file.isDirectory())
refreshDir(context, file);
else
notifyFileCreated(context, file);
}
}
}
public static void notifyFileCreated(@NonNull Context context, @NonNull File file) {
//disable notification for non-existent files, folders and files from a location inaccessible via mtp
if (file.exists() && file.isFile() && file.getAbsolutePath().indexOf("/data/data/") != 0) {
MediaScannerConnection.scanFile(context, new String[]{file.getAbsolutePath()}, null, null);
context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file)));
}
}
public static void notifyFileDeleted(@NonNull Context context, @NonNull File file) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
context.getApplicationContext().sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.fromFile(file)));
}
else{
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
Uri uri = Uri.fromFile(file);
intent.setData(uri);
context.sendBroadcast(intent);
}
}
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