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How to move/copy any type of file from asset file to scoped storage ANDROID Q in JAVA?

I have already succeeded with this operation with images, but I cannot do it with other type of file, in my case I try to insert a database.
Here is an example of the code for the images:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q){
try {
try {
pictures = assetManager.list("photos/dataset1");
} catch (IOException e) {
Log.e("tag", "Failed to get asset file list.", e);
}
if (pictures != null) {
for (String filename : pictures) {
InputStream in;
OutputStream out;
InputStream inputStream = assetManager.open("photos/dataset1/"+filename);
Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
saveImageToGallery(bitmap);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
This method below works for the images :
public void saveImageToGallery(Bitmap bitmap) {
OutputStream outputStream;
Context myContext = requireContext();
try {
if(Build.VERSION.SDK_INT >=Build.VERSION_CODES.Q){
ContentResolver contentResolver = requireContext().getContentResolver();
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME,"Image_"+".jpg");
contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_PICTURES);
Uri imageUri = contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
outputStream = contentResolver.openOutputStream(Objects.requireNonNull(imageUri));
bitmap.compress(Bitmap.CompressFormat.JPEG,100, outputStream);
Objects.requireNonNull(outputStream);
}
}catch (FileNotFoundException e) {
e.printStackTrace();
}
}
and there my try for the other type of file :
AssetManager assetManager = Objects.requireNonNull(requireContext()).getAssets();
Context myContext = requireContext();
//Essential for creating the external storage directory for the first launch
myContext.getExternalFilesDir(null);
File databasesFolder = new File(myContext.getExternalFilesDir(null).getParent(), "com.mydb.orca/databases");
databasesFolder.mkdirs();
if (files!= null) {
for (String filename : files) {
InputStream in;
OutputStream out;
try {
in = assetManager.open("database/test/" + filename);
File outFile = new File(databasesFolder, filename);
out = new FileOutputStream(outFile);
copyFile(in, out);
in.close();
out.flush();
out.close();
} catch (IOException e) {
Log.e("tag", "Failed to copy asset file: " + filename, e);
}
}
} else {
Log.e("Error NPE", "files is null");
}
private void copyFile(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
}
This code above is not working, I mean, I don't get any errors or the desired result. I want something like this or a function similary as the function for my images but for any type of file.
When I run my application I have no error however nothing happens

I finally find a solution, I pretty sure it's not the best way but it work.
I give me access to all files acccess by this way :
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R){
try {
Intent intentFiles = new Intent();
intentFiles.setAction(Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION);
Uri uriFiles = Uri.fromParts("package", myContext.getPackageName(), null);
intentFiles.setData(uriFiles);
myContext.startActivity(intentFiles);
} catch (Exception e)
{
Intent intentFiles = new Intent();
intentFiles.setAction(Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION);
myContext.startActivity(intentFiles);
}
add this line to your manifest:
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
after that, this code below work :
AssetManager assetManager = Objects.requireNonNull(requireContext()).getAssets();
Context myContext = requireContext();
//Essential for creating the external storage directory for the first launch
myContext.getExternalFilesDir(null);
File databasesFolder = new File(myContext.getExternalFilesDir(null).getParent(), "com.mydb.orca/databases");
databasesFolder.mkdirs();
if (files!= null) {
for (String filename : files) {
InputStream in;
OutputStream out;
try {
in = assetManager.open("database/test/" + filename);
File outFile = new File(databasesFolder, filename);
out = new FileOutputStream(outFile);
copyFile(in, out);
in.close();
out.flush();
out.close();
} catch (IOException e) {
Log.e("tag", "Failed to copy asset file: " + filename, e);
}
}
} else {
Log.e("Error NPE", "files is null");
}
private void copyFile(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
}
if someone have a best solution it should be nice
I tested on android 11 and it work

How to create a simple local backup and restore for an app?

I Have five sqlite databases and I want user to be able to have local backup in his phone and he can restore the backup file .
I don't know how to create these backups and restore them programatcally .
I used A github repo but it did not work at all,
I need your help to create this process of backup and restore .
Thank for your attention

In your Activity make backup and restore button and define local database variable like,
private MainDatabase localBackup = new MainDatabase(this);
Then perform backup and restore operation when it's just click
#Override
public void onClick(View v) {
final MainDatabase db = new MainDatabase(getApplicationContext());
switch (v.getId()) {
case R.id.tvBackUp:
String outFileName = Environment.getExternalStorageDirectory() +
File.separator + getResources().getString(R.string.app_name) + File.separator;
localBackup.performBackup(db, outFileName);
break;
case R.id.tvRestore:
File folder = new File(Environment.getExternalStorageDirectory() + File.separator + getApplicationContext().getResources().getString(R.string.app_name));
if (folder.exists()) {
final File[] files = folder.listFiles();
if (files.length == 0) {
Toast.makeText(this, "No any Backup", Toast.LENGTH_SHORT).show();
} else {
localBackup.performRestore(db);
}
}
break;
}
}
Make a method for backup in your database file
public void performBackup(final MainDatabase db, final String outFileName) {
File folder = new File(Environment.getExternalStorageDirectory() + File.separator
+ mContext.getResources().getString(R.string.app_name));
boolean success = true;
if (!folder.exists())
success = folder.mkdirs();
if (success) {
final Dialog dialog = new Dialog(mContext);
dialog.setContentView(R.layout.backup_dialog);
dialog.getWindow().getAttributes().windowAnimations =
R.style.PauseDialogAnimation;
dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
dialog.show();
Button btnSave = dialog.findViewById(R.id.btnSave);
Button btnCancel = dialog.findViewById(R.id.btnCancel);
EditText etName = dialog.findViewById(R.id.etName);
etName.setInputType(InputType.TYPE_CLASS_TEXT);
btnSave.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String m_Text = etName.getText().toString();
String out = outFileName + m_Text + ".db";
db.backup(out);
dialog.dismiss();
}
});
btnCancel.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
} else
Toast.makeText(mContext, "Unable to create directory. Retry",
Toast.LENGTH_SHORT).show();
}
public void backup(String outFileName) {
//database path
final String inFileName = mContext.getDatabasePath(DATABASE_NAME).toString();
try {
File dbFile = new File(inFileName);
FileInputStream fis = new FileInputStream(dbFile);
// Open the empty db as the output stream
OutputStream output = new FileOutputStream(outFileName);
// Transfer bytes from the input file to the output file
byte[] buffer = new byte[1024];
int length;
while ((length = fis.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
// Close the streams
output.flush();
output.close();
fis.close();
Toast.makeText(mContext, "Backup Completed", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(mContext, "Unable to backup database. Retry",
Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
As well as for restore do this thing,
ask to the user what backup to restore
public void performRestore(final MainDatabase db) {
File folder = new File(Environment.getExternalStorageDirectory() + File.separator
+ mContext.getResources().getString(R.string.app_name));
if (folder.exists()) {
final File[] files = folder.listFiles();
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(mContext,
android.R.layout.select_dialog_item);
for (File file : files)
arrayAdapter.add(file.getName());
AlertDialog.Builder builderSingle = new AlertDialog.Builder(mContext);
builderSingle.setTitle("Select & Restore ");
builderSingle.setNegativeButton("cancle", (dialog, which) ->
dialog.dismiss());
builderSingle.setAdapter(arrayAdapter, (dialog, which) -> {
try {
db.importDB(files[which].getPath());
} catch (Exception e) {
Toast.makeText(mContext, "Unable to restore. Retry",
Toast.LENGTH_SHORT).show();
}
});
builderSingle.show();
} else
Toast.makeText(mContext, "Backup folder not present.\nDo a backup before a
restore!", Toast.LENGTH_SHORT).show();
}
public void importDB(String inFileName) {
final String outFileName = mContext.getDatabasePath(DATABASE_NAME).toString();
try {
File dbFile = new File(inFileName);
FileInputStream fis = new FileInputStream(dbFile);
// Open the empty db as the output stream
OutputStream output = new FileOutputStream(outFileName);
// Transfer bytes from the input file to the output file
byte[] buffer = new byte[1024];
int length;
while ((length = fis.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
// Close the streams
output.flush();
output.close();
fis.close();
Toast.makeText(mContext, "Restore Completed", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(mContext, "Unable to import database. Retry",
Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}

Android already supports system automatic backups if you have android:allowBackup="true" at your manifest. If it isn't enough and you want to manage backups manually between app reinstalls than you have to copy database from context.getDatabasePath("<your-database-name>") to external storage somewhere, and then copy it back when you want

How to fix my "FileNotFoundException"(No such file or directory) error with Uri-Path in Android-Studio?

I am writing an App to save files (pictures) as a certain name given by a column from csv-file. The user have to choose the csv with the filebrowser first and then the file will be copyied to my Dir-Data directory.
Everything worsk fine but it seems like the Path i get form the File src Object doesn't work with the Operation.
I expect the error obviously here(2nd Code-Box)
And sry in advance if it is obvious/easy to avoid, it is my first Android-Project ever.
I already tryed to use different Copy Functions with different parameter types and also tryed other formats such as String given by uri.toString().
//CSV Opener
public void performFileSearch() {
// ACTION_OPEN_DOCUMENT is the intent to choose a file via the system's file
// browser.
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
// Filter to only show results that can be "opened"
intent.addCategory(Intent.CATEGORY_OPENABLE);
// Filter to show only .csv using the image MIME data type.
// For all it would be "*/*".
intent.setType("text/comma-separated-values");
startActivityForResult(intent, READ_REQUEST_CODE);
}
//create paths
#Override
public void onActivityResult(int requestCode, int resultCode,
Intent resultData) {
if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK)
{
if (resultData != null) {
Uri path = resultData.getData();
stringUri = path.getPath();
File src = new File(stringUri);
File destination = new File(getFilesDir().getPath());
try {
copyDirectoryOneLocationToAnotherLocation(src,destination);
}
catch(IOException e) {
e.printStackTrace();
System.out.print("error in upload");
}
Toast.makeText(MainActivity.this, "Path: "+stringUri , Toast.LENGTH_SHORT).show();
}
}
}
//copy-operation from StackOverflow
public static void copyDirectoryOneLocationToAnotherLocation(File sourceLocation, File targetLocation)
throws IOException {
if (sourceLocation.isDirectory()) {
if (!targetLocation.exists()) {
targetLocation.mkdir();
}
String[] children = sourceLocation.list();
for (int i = 0; i < sourceLocation.listFiles().length; i++) {
copyDirectoryOneLocationToAnotherLocation(new File(sourceLocation, children[i]),
new File(targetLocation, children[i]));
}
} else {
InputStream in = new FileInputStream(sourceLocation);
OutputStream out = new FileOutputStream(targetLocation);
// Copy the bits from instream to outstream
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
}
}
I want the choosen file to be copied in my data/data/... directory to be used later in the App.
BUT: the path i get from the objets doesn`t work for me

Thx #Mike M. , the tip with using getContentResolver() brougth me the anwser after trying around.
Finally is used an other Copy funktion and reworked the onActivityResult();
public void onActivityResult(int requestCode, int resultCode,
Intent resultData) {
if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK)
{
if (resultData != null) {
try {
String destination = getFilesDir().getPath();
InputStream src = getContentResolver().openInputStream(resultData.getData()); // use the uri to create an inputStream
try {
convertInputStreamToFile(src, destination);
} catch (IOException e) {
e.printStackTrace();
System.out.print("error in upload");
}
} catch (FileNotFoundException ex) {
}
String destination = getFilesDir().getPath();
Toast.makeText(MainActivity.this, "Success!: CSV-File copyed to : " +destination , Toast.LENGTH_SHORT).show();
}
}
}
public static void convertInputStreamToFile(InputStream is, String destination) throws IOException
{
OutputStream outputStream = null;
try
{
File file = new File(destination + "/Student.csv");
outputStream = new FileOutputStream(file);
int read = 0;
byte[] bytes = new byte[1024];
while ((read = is.read(bytes)) != -1) {
outputStream.write(bytes, 0, read);
}
}
finally
{
if(outputStream != null)
{
outputStream.close();
}
}
}

I want to convert this code for sounds (trying to share audio files)

I examined similar subjects, but I couldn't do it. I'm trying to share .mp3 file with LongClick button. I found it for JPEG files. One guy created method for sharing jpeg file. How can I convert it for .mp3 files?
package com.example.tunch.trap;
import...
public class sansar extends AppCompatActivity {
private String yardik;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_sansar);
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
yardik = createImageOnSDCard(R.raw.yardik_denizi);
final MediaPlayer yardikdenizi = MediaPlayer.create(this, R.raw.yardik_denizi);
Button btnYardik = (Button) findViewById(R.id.btnSansar_1);
btnYardik.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(yardikdenizi.isPlaying()){
yardikdenizi.seekTo(0);
}
yardikdenizi.start();
}
});
btnYardik.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
Uri path= FileProvider.getUriForFile(sansar.this, "com.example.tunch.trap", new File(yardik));
Intent shareYardik = new Intent();
shareYardik.setAction(Intent.ACTION_SEND);
shareYardik.putExtra(Intent.EXTRA_TEXT,"Bu ses dosyasını gönderiyorum");
shareYardik.putExtra(Intent.EXTRA_STREAM, path);
shareYardik.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
shareYardik.setType("audio/mp3");
startActivity(Intent.createChooser(shareYardik, "Paylas.."));
return true;
}
});
}
private String createImageOnSDCard(int resID) {
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), resID);
String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/" + resID +".mp3";
File file = new File(path);
try {
OutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
}
catch (Exception e){
e.printStackTrace();
}
return file.getPath();
}
}
This is all Java code. createImageOnSDCard method is for images. I want to use it for my audio file (yardik_denizi.mp3). When I run this, it works but program is trying to send jpeg file. So it doesn't work literally :) How should I change that last part?

You need a method that copies a private raw resource content (R.raw.yardik_denizi) to a publicly readable file such that the latter can be shared with other applications:
public void copyPrivateRawResuorceToPubliclyAccessibleFile(#RawRes int resID,
#NonNull String outputFile) {
InputStream inputStream = null;
FileOutputStream outputStream = null;
try {
inputStream = getResources().openRawResource(resID);
outputStream = openFileOutput(outputFile, Context.MODE_WORLD_READABLE
| Context.MODE_APPEND);
byte[] buffer = new byte[1024];
int length = 0;
try {
while ((length = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, length);
}
} catch (IOException ioe) {
/* ignore */
}
} catch (FileNotFoundException fnfe) {
/* ignore */
} finally {
try {
inputStream.close();
} catch (IOException ioe) {
/* ignore */
}
try {
outputStream.close();
} catch (IOException ioe) {
/* ignore */
}
}
}
and then:
copyPrivateRawResuorceToPubliclyAccessibleFile(R.raw.yardik_denizi, "sound.mp3");
final Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("audio/*");
Uri uri = Uri.fromFile(getFileStreamPath("sound.mp3"));
shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
startActivity(Intent.createChooser(shareIntent, "Share Sound File"));

You should change the path for uri at
Uri path= FileProvider.getUriForFile(sansar.this, "com.example.tunch.trap", new File(change_it_path_to_yardik_denizi.mp3));

Finally i got the answer. I can send mp3 files to other apps with this code.
copyFiletoExternalStorage(R.raw.yardik_denizi, "yardik_denizi.mp3");
Uri path= FileProvider.getUriForFile(sansar.this,
"com.example.tunch.trap", new File(Environment.getExternalStorageDirectory() +
"/Android/data/yardik_denizi.mp3"));
Intent shareYardik = new Intent();
shareYardik.setAction(Intent.ACTION_SEND);
shareYardik.putExtra(Intent.EXTRA_TEXT,"Bu ses dosyasını gönderiyorum");
shareYardik.putExtra(Intent.EXTRA_STREAM, path);
shareYardik.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
shareYardik.setType("audio/mp3");
startActivity(Intent.createChooser(shareYardik, "Paylas.."));
And need to create a method to save data in external store.
private void copyFiletoExternalStorage (int resourceId, String resourceName){
String pathSDCard = Environment.getExternalStorageDirectory() + "/Android/data/"
+ resourceName;
try{
InputStream in = getResources().openRawResource(resourceId);
FileOutputStream out = null;
out = new FileOutputStream(pathSDCard);
byte[] buff = new byte[1024];
int read = 0;
try {
while ((read = in.read(buff)) > 0) {
out.write(buff, 0, read);
}
} finally {
in.close();
out.close();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}

File not found error after selecting a file in android

I want to open a .pdf file in my android app.now i can browse the pdf file and after browsing the file I am getting File Not Found Error when i check the file exist or not. Now after selecting the file my selected file Uri data.getData() is like
content://com.android.externalstorage.documents/document/6333-6131:SHIDHIN.pdf
and the path when i parse using data.getData().getPath().toString() is like
/document/6333-6131:SHIDHIN.pdf Here is my code. Please Help me.
// To Browse the file
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("application/pdf");
startActivityForResult(intent, PICK_FILE_REQUEST);
After selecting file
//onActivityResult
public void onActivityResult(final int requestCode, int resultCode, Intent data) {
try {
switch (requestCode) {
case PICK_FILE_REQUEST:
if (resultCode == RESULT_OK) {
try {
Uri fileUri = data.getData();
String path = fileUri.getPath().toString();
File f = new File(path);
if (f.exists()) {
System.out.println("\n**** Uri :> "+fileUri.toString());
System.out.println("\n**** Path :> "+path.toString());
final Intent intent = new Intent(MainActivity.this, ViewPdf.class);
intent.putExtra(PdfViewerActivity.EXTRA_PDFFILENAME, path);
startActivity(intent);
} else {
System.out.println("\n**** File Not Exist :> "+path);
}
} catch (Exception e) {
ShowDialog_Ok("Error", "Cannot Open File");
}
}
break;
}
} catch (Exception e) {
}
}

This is not the answer but a workaround.
File file = new File("some_temp_path"); # you can also use app's internal cache to store the file
FileOutputStream fos = new FileOutputStream(file);
InputStream is = context.getContentResolver().openInputStream(uri);
byte[] buffer = new byte[1024];
int len = 0;
try {
len = is.read(buffer);
while (len != -1) {
fos.write(buffer, 0, len);
len = is.read(buffer);
}
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
pass this file's absolute path to your activity.

button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
File pdfFile = new File(Environment.getExternalStorageDirectory(), "Case Study.pdf");
try {
if (pdfFile.exists()) {
Uri path = Uri.fromFile(pdfFile);
Intent objIntent = new Intent(Intent.ACTION_VIEW);
objIntent.setDataAndType(path, "application/pdf");
objIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(objIntent);
} else {
Toast.makeText(MainActivity.this, "File NotFound", Toast.LENGTH_SHORT).show();
}
} catch (ActivityNotFoundException e) {
Toast.makeText(MainActivity.this, "No Viewer Application Found", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
});