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Image and file operations on Android

I get pictures url from gallery or camera on android but I can't convert them to file. When i developing an app with Java in android, sometimes I need to get pictures from gallery and camera to my application. But when i try to do this I'm getting errors.
Isn't there a standard here? The code works at one api level and does not works another one. Or when I take the URI of some images and convert it to file, I get an error regardless of the api level. I wonder if there is a fundamental solution to this problem?
I am starting intent with this
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent,IMAGE_RESULT);
And then I'm catching data with this code:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == IMAGE_RESULT) {
String filePath = ImageFilePath.getPath(OwnProfileActivity.this, data.getData());
selectedFile = new File(filePath);
showProgressDialog();
Handler handler = new Handler();
handler.postDelayed(this::chaneProfileImage, 1000);
}
}
}

May I suggest something like this, but of course this is if you have a bitmap:
private fun getImageUriFromBitmap(image: Bitmap): Uri? {
val bytes = ByteArrayOutputStream()
image.compress(Bitmap.CompressFormat.PNG, 100, bytes)
val relativeLocation = Environment.DIRECTORY_PICTURES + File.pathSeparator + "NotifyMe"
val contentValues = ContentValues().apply {
put(MediaStore.MediaColumns.DISPLAY_NAME, "notifyMe_${System.currentTimeMillis()}")
put(MediaStore.MediaColumns.MIME_TYPE, "image/png")
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
put(MediaStore.MediaColumns.RELATIVE_PATH, relativeLocation)
put(MediaStore.MediaColumns.IS_PENDING, 1)
}
}
return context?.contentResolver?.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues)
}
Then you can create the file with the uri
val file = File(uri.path)
source: https://gist.github.com/franciscobarrios/9f6634c87ca6e56ed70cd96807dd1dcb

How to get the folder path using Intent on Android

To get the file path I use:
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
intent.addCategory(Intent.CATEGORY_OPENABLE);
Intent.ACTION_GET_CONTENT doesn't allow to select folder.
But how to get the folder/directory path?
API level 19.
Are there ways to do this without third-party libraries?

To get the file I use
That code has little to do with files. Content != file.
But how to get the folder/directory?
Build your own UI for this. Or, use a third-party directory chooser library.
Are there ways to do this without third-party libraries?
There is no platform-defined Intent for choosing a filesystem directory. ACTION_OPEN_DOCUMENT_TREE will let the user choose a document tree on Android 5.1+, but a document tree is not necessarily a filesystem directory, just as ACTION_GET_CONTENT and ACTION_OPEN_DOCUMENT do not necessarily involve files.

First of all create constant in your activity class:
private static final int PICKFILE_REQUEST_CODE = 100;
When you need to pick a folder use intent like this:
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("file/*");
startActivityForResult(intent, PICKFILE_REQUEST_CODE);
And after user selected folder you will get result in
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == PICKFILE_REQUEST_CODE) {
String folderPath = data.getDataString();
//TODO
return;
}
super.onActivityResult(requestCode, resultCode, data);

for picking any folder u can use this
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("file/*");
startActivityForResult(intent,PICKFILE_RESULT_CODE);
after getting the file show its details as
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
String FilePath = data.getData().getPath();
String FileName = data.getData().getLastPathSegment();
int lastPos = FilePath.length() - FileName.length();
String Folder = FilePath.substring(0, lastPos);
textFile.setText("Full Path: \n" + FilePath + "\n");
textFolder.setText("Folder: \n" + Folder + "\n");
textFileName.setText("File Name: \n" + FileName + "\n"); }
here is an example how you can do that hope this makes fully clear:
http://android-er.blogspot.com/2011/04/more-for-pick-file-using.html

File path is empty for google drive files

I am developing a file uploading android application. My objective is to upload the user selected file from file manager to a remote server. But when a google drive file is selected , file uploading fails because of empty path . Can somebody help me ?
My code is :
private void showFileChooser() {
Intent intent = new Intent();
intent.setType("*/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
startActivityForResult(Intent.createChooser(intent, "Choose File to Upload.."), PICK_FILE_REQUEST);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == PICK_FILE_REQUEST) {
if (data == null) {
//no data present
return;
}
Uri selectedFileUri = data.getData();
selectedFilePath = FilePath.getPath(mActivity, selectedFileUri);
if (selectedFilePath != null && !selectedFilePath.equals("")) {
callUploadDocumentAPI();
} else {
Toast.makeText(mActivity, StringConstants.CANT_UPLOAD_TO_SERVER, Toast.LENGTH_SHORT).show();
}
}
}

But when a google drive file is selected , file uploading fails because of empty path .
FilePath.getPath(mActivity, selectedFileUri) cannot work. A Uri is not a file.
Use a ContentResolver and openInputStream() to get an InputStream on the content identified by the Uri. Either use that InputStream directly, or use it to make your own copy of the content in some file that you control, then use that copy.

android :can't save image in folder and display it in activity

i want to capture an image and save it in folder, but when i capture it, my image is not save in folder that i want, but just save in gallery, and the name of my image is not like what i want.
my image also not display in my activity, is there anyone know, why this is happen?
this is my code :
private void dialogKamera() {
String sdCard= Environment.getExternalStorageDirectory()+"/android/data/spaj/spaj_foto.png";
File file=new File(sdCard);
if(file.exists())
file.delete();
Uri outputFileUri = Uri.fromFile(file);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, 0);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 0 && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
image_spaj.setImageBitmap(photo);
}
i don't know where is my fault, i hope somebody can help me to solve my problem, thank you

You should make sure the output directory exists.
EDIT: removed spurious comment :-)
To ensure the directory exists:
File dir = file.getParentFile();
dir.mkdirs();
To display the image, here are several good resources:
How can I display image in Android Application,
Displaying simple bitmap on Android has a list of other resources,
And the tutorial Displaying Bitmaps in Your UI.

First make sure the directory exists, and then
try this:
Change path to
String sdCard= Environment.getExternalStorageDirectory()+"/Android/data/spaj/spaj_foto.png"
'Android' instead of 'android'.

Copy file from the directory to another , having the path's of file and directory

in my android application I want to copy file from one directory to another , I have the path of file filePath , and have the path of directory dirPath in what I must copy the file. I tried many ways , but nothing helped , some ways only make some empty(0 kb) file with strange name different from the name of my file. SO help please :)
here is some part of code, if it help's you, I have two buttons for Gallery and for Camera , and I must pick images from there
Button btnCam = (Button) dialog.findViewById(R.id.btncamera);
btnCam.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
dialog.cancel();
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 2500);
}
});
//end of camera button
Button btnGal = (Button) dialog.findViewById(R.id.btngalary);
btnGal.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
dialog.cancel();
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
and Activity Result
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data)
{
Uri selectedImage = data.getData();
url = new String(selectedImage.toString());
//here I must copy file with path `selectedImage` and replace it in
// directory with path `currentDir.hetPath()`
}
if (requestCode == 2500)
{
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
//here I must do the same thing above
}
}

I found some way , in my Activity result I must call copyFile(String, String) function , here is the body
public static boolean copyFile(String from, String to) {
try {
File sd = Environment.getExternalStorageDirectory();
if (sd.canWrite()) {
int end = from.toString().lastIndexOf("/");
String str1 = from.toString().substring(0, end);
String str2 = from.toString().substring(end+1, from.length());
File source = new File(str1, str2);
File destination= new File(to, str2);
if (source.exists()) {
FileChannel src = new FileInputStream(source).getChannel();
FileChannel dst = new FileOutputStream(destination).getChannel();
dst.transferFrom(src, 0, src.size());
src.close();
dst.close();
}
}
return true;
} catch (Exception e) {
return false;
}
}

If you feel up to it, you can include Apache Commons I/O in your app. I don't know how big it is. See Standard concise way to copy a file in Java?
Or maybe you could download the source, and cherry-pick the source to FileUtils.copyFile()