问题
I'm trying to save a video to the gallery,the following code works well an all Android versions except the Android Q:
private void getPath() {
String videoFileName = "video_" + System.currentTimeMillis() + ".mp4";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
ContentResolver resolver = getContentResolver();
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, videoFileName);
contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "video/mp4");
contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, "Movies/" + "Folder");
contentValues.put(MediaStore.Video.Media.IS_PENDING, 1);
Uri collection = MediaStore.Video.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
Uri videoUri = resolver.insert(collection, contentValues);
if (videoUri != null) {
try (ParcelFileDescriptor pfd = resolver.openFileDescriptor(videoUri, "w", null)) {
OutputStream outputStream = null;
if (pfd != null) {
outputStream = resolver.openOutputStream(videoUri);
outputStream.flush();
outputStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
contentValues.clear();
contentValues.put(MediaStore.Video.Media.IS_PENDING, 0);
if (videoUri != null) {
resolver.update(videoUri, contentValues, null, null);
}
} else {
File storageDir = new File(
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES)
+ "/Folder");
boolean success = true;
if (!storageDir.exists()) {
success = storageDir.mkdirs();
}
if (success) {
File videoFile = new File(storageDir, videoFileName);
savedVideoPath = videoFile.getAbsolutePath();
}
}
}
I also tried using get getExternalFilesDir() , but doesn't work, no video created in the gallery
String videoFileName = "video_" + System.currentTimeMillis() + ".mp4";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
File imageFile = null;
File storageDir = new File(getExternalFilesDir(Environment.DIRECTORY_DCIM),
"Folder");
boolean success = true;
if (!storageDir.exists()) {
success = storageDir.mkdirs();
}
if (success) {
imageFile = new File(storageDir, videoFileName);
}
savedVideoPath = imageFile.getAbsolutePath();
I use a 3rd-party library to record SurfaceView, this library requires a path to save the recorded video :
mRenderPipeline = EZFilter.input(this.effectBmp)
.addFilter(new GalleryEffects().getEffect(VideoMaker.this, i))
.enableRecord(savedVideoPath, true, false)
.into(mRenderView);
When record video finished, the recorded video saved with the given path savedVideoPath , everything works just fine on all android version except the Android Q
After saving the video, when I check, I get an empty video in the gallery
回答1:
I want to create a path to use it
You are getting a Uri from MediaStore. There is no "path". Not only can a Uri not be converted to a path, but you do not have filesystem access to that location on Android 10 and higher.
Get rid of this:
if (videoUri != null) {
savedVideoPath = getRealPathFromURI(videoUri);
}
as it will not work.
Replace it with your code to write out your video to the location identified by the Uri. Use resolver.openOutputStream() to get an OutputStream to that location. In particular, do this before you call resolver.update() for an IS_PENDING of 0, as that specifically says "I am done writing to the Uri; you can use the content now".
Or, use one of the filesystem locations that you do have access to, such as getExternalFilesDir() on Context, and get rid of the MediaStore stuff.
回答2:
I have answered you to your other post to... You need an inputstream (file, bitmap etc.) and write an outputstream from the inputfile.
You have to change the library to make it work with Android Q . If you cannot do this you could copy the video to the media gallery and then delete the old video created in getExternalFilesDir(). After this you have the uri of the video and can do what you want with the uri
If you have saved the video with getExternalFilesDir() you could use my example here : The media uri you get is "uriSavedVideo" . This is only an example. A large video should also be copied in the background.
String videoFileName = "video_" + System.currentTimeMillis() + ".mp4";
ContentValues valuesvideos;
valuesvideos = new ContentValues();
valuesvideos.put(MediaStore.Video.Media.RELATIVE_PATH, "Movies/" + "Folder");
valuesvideos.put(MediaStore.Video.Media.TITLE, videoFileName);
valuesvideos.put(MediaStore.Video.Media.DISPLAY_NAME, videoFileName);
valuesvideos.put(MediaStore.Video.Media.MIME_TYPE, "video/mp4");
valuesvideos.put(MediaStore.Video.Media.DATE_ADDED, System.currentTimeMillis() / 1000);
valuesvideos.put(MediaStore.Video.Media.DATE_TAKEN, System.currentTimeMillis());
valuesvideos.put(MediaStore.Video.Media.IS_PENDING, 1);
ContentResolver resolver = mContext.getContentResolver();
Uri collection = MediaStore.Video.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
Uri uriSavedVideo = resolver.insert(collection, valuesvideos);
ParcelFileDescriptor pfd;
try {
pfd = mContext.getContentResolver().openFileDescriptor(uriSavedVideo, "w");
FileOutputStream out = new FileOutputStream(pfd.getFileDescriptor());
// Get the already saved video as fileinputstream from here
File storageDir = new File(mContext.getExternalFilesDir(Environment.DIRECTORY_MOVIES), "Folder");
File imageFile = new File(storageDir, "Myvideo");
FileInputStream in = new FileInputStream(imageFile);
byte[] buf = new byte[8192];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
out.close();
in.close();
pfd.close();
} catch (Exception e) {
e.printStackTrace();
}
valuesvideos.clear();
valuesvideos.put(MediaStore.Video.Media.IS_PENDING, 0);
mContext.getContentResolver().update(uriSavedVideo, valuesvideos, null, null);
来源：https://stackoverflow.com/questions/57923329/save-and-insert-video-to-gallery-on-android-10