java如何将视频保存到gallery并检索保存的视频uri?
我正在尝试为我的应用程序创建“保存到图库”功能。我的应用程序的最低api级别为21,最高api级别为30。 下面是我用来将视频保存到gallery的代码。一切都很完美,但代码只适用于API 29及以上版本。以下是代码:
String videoFileName = "video_" + System.currentTimeMillis() + ".mp4";
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
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 = context.getContentResolver();
Uri collection = MediaStore.Video.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
Uri uriSavedVideo = resolver.insert(collection, valuesvideos);
ParcelFileDescriptor parcelFileDescriptor;
try {
assert uriSavedVideo != null;
parcelFileDescriptor = context.getContentResolver().openFileDescriptor(uriSavedVideo, "w");
assert parcelFileDescriptor != null;
FileOutputStream out = new FileOutputStream(parcelFileDescriptor.getFileDescriptor());
FileInputStream in = new FileInputStream(context.getExternalFilesDir(Environment.DIRECTORY_MOVIES) + File.separator + "Application" + File.separator + "video.mp4");
byte[] buf = new byte[8192];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
out.close();
in.close();
parcelFileDescriptor.close();
} catch (Exception e) {
e.printStackTrace();
}
valuesvideos.clear();
valuesvideos.put(MediaStore.Video.Media.IS_PENDING, 0);
context.getContentResolver().update(uriSavedVideo, valuesvideos, null, null);
}
这是我在API 29以下版本中使用的代码:
ContentValues valuesvideos;
valuesvideos = new ContentValues();
valuesvideos.put(MediaStore.Video.Media.DATA, context.getExternalFilesDir(Environment.DIRECTORY_MOVIES) + File.separator + "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);
ContentResolver resolver = context.getContentResolver();
Uri collection = MediaStore.Video.Media.INTERNAL_CONTENT_URI;
Uri uriSavedVideo = resolver.insert(collection, valuesvideos);
ParcelFileDescriptor parcelFileDescriptor;
try {
assert uriSavedVideo != null;
parcelFileDescriptor = context.getContentResolver().openFileDescriptor(uriSavedVideo, "w");
assert parcelFileDescriptor != null;
FileOutputStream out = new FileOutputStream(parcelFileDescriptor.getFileDescriptor());
FileInputStream in = new FileInputStream(context.getExternalFilesDir(Environment.DIRECTORY_MOVIES) + File.separator + "Application" + File.separator + "video.mp4");
byte[] buf = new byte[8192];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
out.close();
in.close();
parcelFileDescriptor.close();
} catch (Exception e) {
e.printStackTrace();
}
valuesvideos.clear();
context.getContentResolver().update(uriSavedVideo, valuesvideos, null, null);
如何为较低的API编写这个精确的函数?现在我尝试了MediaScanner,但它似乎太慢了,我无法获取保存文件的uri。希望你能回答。问候
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