Retrieving Image from Chooser Intent in Android 10 - android-10.0

Question

I'm trying to update my app to work with androids new scoped storage rules in Android 10 and up, but am having the hardest time with it. I know I need to rebuild my app with new versions of java, but I just want to get it to work while I study and learn enough to do so. In a nutshell, I really need help. I have read so many different ways to make scoped storage work, and everybody seems to be doing it differently.
Just for clarification, what I am trying to do with the uri is both display in an imageview, then upload to database.
This code is working to take a picture and select images and videos in android 9, but in android 10, it only works when camera component captures a picture or a video. When a user selects an image or video from file, it returns a null pointer exception. Because I am pretty sure the error is in how I am dealing with the different chooser intents, I have shown the on result code first.
I have been unable to find a clear example of how to retrieve a usable image or video uri in android 10. If anybody can help, I would really appreciate it. I know I have much to learn.
if ((new java.io.File(_filePath)).exists()){
} else {
_filePath = vidfile.getAbsolutePath();
if ((new java.io.File(_filePath)).exists()){
} else {
ArrayList<String> _filePath_1 = new ArrayList<>();
if (_data != null) {
if (_data.getClipData() != null) {
for (int _index = 0; _index < _data.getClipData().getItemCount(); _index++) {
ClipData.Item _item = _data.getClipData().getItemAt(_index);
_filePath_1.add(FileUtil.convertUriToFilePath(getApplicationContext(),
_item.getUri()));
}
}
else {
_filePath_1.add(FileUtil.convertUriToFilePath(getApplicationContext(),
_data.getData()));
}
}
_filePath = _filePath_1.get((int)0);
}
}
Just in case I am wrong, here is the code for the click event to launch the chooser...
SimpleDateFormat date1 = new SimpleDateFormat("yyyyMMdd_HHmmss");
String fileName1 = date1.format(new Date()) + ".jpg";
picfile = new
File(getApplicationContext().getExternalFilesDir(Environment.DIRECTORY_DCIM).getAbsolutePath() +
File.separator + fileName1);
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Uri _uri_camr1 = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
_uri_camr1 = FileProvider.getUriForFile(getApplicationContext(),
getApplicationContext().getPackageName() + ".provider", picfile);
}
else {
_uri_camr1 = Uri.fromFile(picfile);
}
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, _uri_camr1);
takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
SimpleDateFormat date2 = new SimpleDateFormat("yyyyMMdd_HHmmss");
String fileName2 = date2.format(new Date()) + ".mp4";
vidfile = new
File(getApplicationContext().getExternalFilesDir(Environment.DIRECTORY_DCIM).getAbsolutePath() +
File.separator + fileName2);
Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
Uri _uri_camr2 = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
_uri_camr2 = FileProvider.getUriForFile(getApplicationContext(),
getApplicationContext().getPackageName() + ".provider", vidfile);
}
else {
_uri_camr2 = Uri.fromFile(vidfile);
}
takeVideoIntent.putExtra(MediaStore.EXTRA_OUTPUT, _uri_camr2);
takeVideoIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("*/*");
contentSelectionIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Intent[] intentArray = new Intent[]{ takePictureIntent, takeVideoIntent};
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Choose an action");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(chooserIntent, REQ_CD_CAMR);

Answer 1

try this code. it copies the selected file to scoped storage and gives you the final path of scoped storage from where you can access it. try it out & let me know if you face any problem.
android.net.Uri sharedFileUri = android.net.Uri.fromFile(new java.io.File(_filepath));
java.io.FileInputStream input = null;
java.io.FileOutputStream output = null;
try {
String filePath = new java.io.File(getCacheDir(), "tmp").getAbsolutePath();
android.os.ParcelFileDescriptor pfd = getContentResolver().openFileDescriptor(sharedFileUri, "rw");
if (pfd != null) {
java.io.FileDescriptor fd = pfd.getFileDescriptor();
input = new java.io.FileInputStream (fd);
output = new java.io.FileOutputStream (filePath);
int read;
byte[] bytes = new byte[4096];
while ((read = input.read(bytes)) != -1) {
output.write(bytes, 0, read);
}
java.io.File sharedFile = new java.io.File(filePath);
String finalPath = sharedFile.getPath(); // this will provide you path to scoped storage. use this final path to access the selected file from scoped storage.
}
}catch(Exception ex) {
android.widget.Toast.makeText(this, ex.toString(), android.widget.Toast.LENGTH_SHORT).show();
} finally {
try {
input.close();
output.close();
} catch (Exception ignored) {
}
}