Develop Reference

No such file or directory in Android 10 (api 29)

I am working on a photo editor app in which after editing my picture I save it into my local storage. It is working fine till android 9 but not on android 10. It shows exception of "No such file or directory found" in Android 10. After some research I found that getExternalFilesDir() is deprecated in android Q+. But I cannot find any proper way to do it in android 10. So please if anyone can provide a tutorial it would be really helpful.
I've added and granted uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> in case of it was the issue, and it didn't solve anything.
This is my try (Used ParcelFileDescriptor):
private void fileAccessForAndroidQ(Uri fileUri){
try {
ParcelFileDescriptor parcelFileDescriptor = this.getContentResolver().openFileDescriptor(fileUri, "r", null);
InputStream inputStream = new FileInputStream(parcelFileDescriptor.getFileDescriptor());
Cursor returnCursor =
getContentResolver().query(fileUri, null, null, null, null);
int nameIndex = returnCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
returnCursor.moveToFirst();
fileName = returnCursor.getString(nameIndex);
file = new File(this.getFilesDir(), fileName);
OutputStream outputStream = new FileOutputStream(file);
IOUtils.copyStream(inputStream, outputStream);
}catch (Exception e){
Toast.makeText(this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
Any kind of help would be appreciated.

If you target Android 10 (API level 29) or higher, set the value of requestLegacyExternalStorage to true in your app's manifest file:
Documentation
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.appname"
android:installLocation="auto">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:requestLegacyExternalStorage="true"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme.NoActionBar">
<activity android:name=".activities.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Here is the best I could find:
https://developer.android.com/training/data-storage/app-specific#external
Basically, you now use app-specific directories for your files. For example:
#Nullable
File getAppSpecificAlbumStorageDir(Context context, String albumName) {
// Get the pictures directory that's inside the app-specific directory on
// external storage.
File file = new File(context.getExternalFilesDir(
Environment.DIRECTORY_PICTURES), albumName);
if (file == null || !file.mkdirs()) {
Log.e(LOG_TAG, "Directory not created");
}
return file;
}

I found this working for me. i am trying to list all file on ListView
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 0);
} else {
File s = Environment.getExternalStorageDirectory();
Log.d("Path ",Arrays.toString(s.listFiles()));
File[] s1 = new File[s.listFiles().length];
for(int i=0;i<s.listFiles().length;i++){
s1[i]= new File(s.listFiles()[i].toString().replace("/storage/emulated/0/", ""));
}
ArrayAdapter<File> adapter = new ArrayAdapter<File>(this,R.layout.support_simple_spinner_dropdown_item,s1);
l1.setAdapter(adapter);
}

Android emulator open failed: ENOENT (No such file or directory)

I need help with permission to save file in Android emulator ... I've had added
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-feature android:name="android.hardware.camera" android:required="true" />
in AndroidManifest.xml
My code for save file:
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
imageView.setImageBitmap(imageBitmap);
}
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/Img");
myDir.mkdirs();
long n = System.currentTimeMillis();
String fname = "IMG_" + n + ".jpeg";
file = new File(myDir, fname);
if (file.exists())
file.delete();
try {
FileOutputStream out2 = new FileOutputStream(file);// here fire exception
imageBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out2);
out2.flush();
out2.close();
} catch (Exception e) {
e.printStackTrace();
}
}
AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.denis.calculator">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".InfoActivity"></activity><!-- ATTENTION: This was auto-generated to add Google Play services to your project for
App Indexing. See https://g.co/AppIndexing/AndroidStudio for more information. -->
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
</application>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-feature android:name="android.hardware.camera" android:required="true" />
Any ideas pls?

Solution is downgrade from Nougat to KitKat! thanks for advices

Replace the below lines
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/Img");
With
File myDir = new File(Environment.getExternalStorageDirectory(),"Img");
Also remove the below lines from your code
if (file.exists())
file.delete();
Because the way you defining the file name will never gonna have the same file name. So validating the existence of file is irrelevant here.
You also have to ask writing permission with the user if your app is going to be used for Android 6.0 or above. Refer the link given below for details:
https://developer.android.com/training/permissions/requesting.html
You can use the solution defined in the library I've recently created this repository including a demo for Permission.
https://github.com/eeshan-jamal/DroidLibX
I will later make it available through Maven but for now you have to import the droidlibx library module in your project.

How to render PDF on Android using PdfRenderer

I'm failing on this task in both cases:
1. Trying to open it from the phone memory
2. Trying to open it from the assets
I have render() method which is in 1st case looking like this:
private void render() {
try {
imageView = (ImageView) findViewById(R.id.page);
int REQ_WIDTH = 1;
int REQ_HEIGHT = 1;
REQ_WIDTH = imageView.getWidth();
REQ_HEIGHT = imageView.getHeight();
Bitmap bitmap = Bitmap.createBitmap(REQ_WIDTH, REQ_HEIGHT, Bitmap.Config.ARGB_4444);
File file = new File(Environment.getExternalStorageDirectory() + "/Download/test.pdf");
PdfRenderer renderer = new PdfRenderer(ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY));
if (currentPage < 0) {
currentPage = 0;
} else if (currentPage > renderer.getPageCount()) {
currentPage = renderer.getPageCount() - 1;
}
Matrix matrix = imageView.getImageMatrix();
Rect rect = new Rect(0, 0, REQ_WIDTH, REQ_HEIGHT);
renderer.openPage(currentPage).render(bitmap, rect, matrix, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
imageView.setImageMatrix(matrix);
imageView.setImageBitmap(bitmap);
imageView.invalidate();
renderer.close();
} catch (Exception e) {
e.printStackTrace();
}
}
Most interesting part of thrown exception is here. In case you want to see whole logs click here.
And yes, I've added needed permission in AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.john.pdfreader">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".BookActivity">
<intent-filter>
<action android:name="com.example.schoolreader.BookActivity" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
Let's take a look on the 2nd case(reading from the assets):
// ...previous code
ParcelFileDescriptor input = getAssets().openFd("test.pdf").getParcelFileDescriptor();
PdfRenderer renderer = new PdfRenderer(input);
// ..previous code
In this case it says the same, but if I remember correctly there was smth saying cannot create document, but now it's gone and exception looks the same. Anyway, why did I start talking about 2nd case? There's an open issue saying that META-INF should be at the end of the apk. Mine is the at the end and it still not working.
Frankly, I've tried even an example from Androidstudio itself. And you know what? It's working! But only with their sample.pdf and when I try to replace it with mine it just crashes. Do you have any idea what I can try to make pdf rendering on my Android?
Everything was tested on Nexus 5, Android 6.0 Marshmallow.

In addition to the permission in the manifest, you may need to ask for permission explicitly. Something like:
int permission = ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE);
if (permission != PackageManager.PERMISSION_GRANTED)
{
// We don't have permission so prompt the user
ActivityCompat.requestPermissions(getActivity(), PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE);
}

SecurityException: Permission Denial on reading file from Downloads

There are some similar questions on StackOverflow but the situations they happened a little bit different.
I need to read a file (in Service) that user shared with a standard share mechanism.
There are no problems reading files from gallery or files shared by File Managers or Google Drive. But there are problems when I try to share files from Downloads.
I receive:
java.lang.SecurityException: Permission Denial: opening provider
com.android.providers.downloads.DownloadStorageProvider from
ProcessRecord{432abf50 8550:clipboard.clipboardtest/u0a167} (pid=8550,
uid=10167) requires android.permission.MANAGE_DOCUMENTS or
android.permission.MANAGE_DOCUMENTS
My manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="virtualclipboard.copytodesktop"
android:installLocation="internalOnly">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MANAGE_DOCUMENTS" />
<uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER" />
<uses-permission android:name="android.permission.ACCESS_ALL_DOWNLOADS" />
<uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER_ADVANCED" />
<application>
...
</application>
</manifest>
The code to read a file. I receive Uri in intent while share operation.
InputStream input = getContentResolver().openInputStream(fileUri);
byte[] fileData = Converter.InputStreamToByteArray(input);
// ...
public class Converter {
public static byte[] InputStreamToByteArray(InputStream inputStream) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int reads = inputStream.read();
while(reads != -1){
baos.write(reads);
reads = inputStream.read();
}
return baos.toByteArray();
}
catch (Exception e) {
return null;
}
}
}
Reproduced on Nexus 5, 4.4.4, KitKat.

Android FileNotFoundException in uploading Photo

I have problem with finding photo after saving.
Here is how i am creating Intent to take photo from camera and save filePath to it.
private void takePhoto(int position)
{
Meter meter = adapter.getItem(position);
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
File tempFile = createTempFile(meter.id, JPEG_FILE_SUFFIX, storageDir);
if(tempFile != null)
{
lastPhotoPath = tempFile.getAbsolutePath();
Log.d(TAG, "temp picture path=" + lastPhotoPath);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(tempFile));
try
{
startActivityForResult(takePictureIntent, TAKE_PHOTO_REQUEST);
lastPhotoPosition = position;
}
catch(ActivityNotFoundException exc)
{
Log.e(TAG, "activity to take photo not found");
}
}
}
Then later i want to upload this image to server.
Here is how i am doing this.
public void compose(OutputStream out) throws DataStorageException
{
Log.d("MainMenuActivity", "file not found in path " + path);
InputStream in = null;
try
{
in = new BufferedInputStream(new FileInputStream(path));
// TODO: there is a better way
byte[] buf = new byte[8192];
while(true)
{
int length = in.read(buf);
if(length < 0)
break;
out.write(buf, 0, length);
}
}
catch(FileNotFoundException exc)
{
throw new DataStorageInternalErrorException("FileNotFoundException, FileRequestComposer compose");
}
catch(IOException exc)
{
// TODO: probably network error
throw new DataStorageInternalErrorException("IOException, FileRequestComposer compose");
}
finally
{
if(in != null)
{
try
{
in.close();
}
catch(IOException exc)
{
// FIXME
}
}
}
}
I check filePath from saving and filePath to save they both completely identical:
temp picture path=/mnt/sdcard/Pictures/19520983731349.jpg
file not found in path /mnt/sdcard/Pictures/19520983731349.jpg
And the exception is thrown in method compose()
FileNotFoundException, FileRequestComposer compose
Any ideas where i am doing wrong?
P.S. And i can't see this file in /mnt/sdcard/Pictures mb. he is lost or somethinf like this? Please suggest any ideas.
P.P.S Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.vodomer"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7"
android:targetSdkVersion="19"/>
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application android:label="#string/app_name"
android:name="com.vodomer.DatabaseApplication" >
<activity android:name="Vodomer"
android:label="#string/app_name"
android:icon="#drawable/icon"
android:theme="#android:style/Theme.NoTitleBar"
android:screenOrientation="portrait"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".activity.AddressesListActivity"
android:theme="#android:style/Theme.NoTitleBar"
android:screenOrientation="portrait"
>
</activity>
<activity android:name=".activity.MainMenuActivity"
android:theme="#android:style/Theme.NoTitleBar"
android:screenOrientation="portrait"
>
</activity>
<activity android:name=".activity.MetersActivity"
android:theme="#android:style/Theme.NoTitleBar"
android:windowSoftInputMode="adjustPan"
android:screenOrientation="portrait"
>
</activity>
<activity android:name=".activity.PersonalAccountActivity"
android:theme="#android:style/Theme.NoTitleBar"
android:screenOrientation="portrait"
>
</activity>
</application>
</manifest>

The problem is likely with the way you create File. Instead of createTempFile try regular constructor :
File tempFile = new File(storageDir, meter.id + JPEG_FILE_SUFFIX);
Generally, you also want to make sure that your storageDir folder exists and create it with mkdirs if needed.

Add this path for storing image on sdcard.
final String uploadFilePath = "/mnt/sdcard/";