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Can not take a picture using registerForActivityResult

I want to to use registerForActivityResult to take a photo. Whenever I take a picture and tap the confirm button the result code is always 0. here is my codes:
Uri mImageUri;
ActivityResultLauncher<Intent> mCameraLauncher = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), result -> {
// ---> Here the result code is always 0 <----
Intent data = result.getData();
if (result.getResultCode() == RESULT_OK && data != null) {
Bitmap bitmap = BitmapFactory.decodeFile(mImageUri.toString());
}
});
public void launchCamera() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File tempDir = new File(Environment.getExternalStorageDirectory().getPath(),
APP_NAME + File.separator + "Temp");
if (!tempDir.exists()) {
tempDir.mkdirs();
}
File file = new File(tempDir.getAbsolutePath() + File.separator + "tempImage");
if (Build.VERSION.SDK_INT < 24) {
mImageUri = Uri.fromFile(file);
} else {
mImageUri = Uri.parse(file.getPath());
}
intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
mCameraLauncher.launch(intent);
}
Manifest.xml
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<queries>
<intent>
<action android:name="android.media.action.IMAGE_CAPTURE" />
</intent>
</queries>
How can I solve this problem?

Archos T101X 4G Android 10 : MediaScannerConnection.scanFile deletes my added file

When I take a photo, I save the image in the DCIM / Camera folder in the external folder with this method:
Method 1:
File fImage = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/image.jpg");
ContentResolver resolver = activity.getContentResolver();
Uri imageUri = FileProvider.getUriForFile(activity, BuildConfig.APPLICATION_ID + ".provider", fImage);
if(imageUri != null) {
OutputStream fos = resolver.openOutputStream(imageUri);
if(fos != null) {
fos.write(bytes, 0, bytes.length);
fos.flush();
fos.close();
new SingleMediaScanner(activity, fImage);
}
}
Method 2:
File fImage = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/image.jpg");
OutputStream outputStream=null;
try {
outputStream=new FileOutputStream(fImage);
outputStream.write(bytes);
}finally {
if (outputStream != null)
outputStream.close();
new SingleMediaScanner(activity, fImage);
}
My file is present on the tablet in the desired folder.
My provider contains this:
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external_files" path="."/>
</paths>
In my manifest there is this:
<uses-sdk
android:minSdkVersion="22"
android:targetSdkVersion="30" />
...
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
...
<application
...
android:requestLegacyExternalStorage="true"
android:preserveLegacyExternalStorage="true">
...
</application>
My class allowing the file scan:
public static class SingleMediaScanner implements MediaScannerConnection.MediaScannerConnectionClient {
private MediaScannerConnection mMs;
private File mFile;
public SingleMediaScanner(Context context, File f) {
mFile = f;
mMs = new MediaScannerConnection(context, this);
mMs.connect();
}
#Override
public void onMediaScannerConnected() {
String extension = FilenameUtils.getExtension(mFile.getAbsolutePath()).toLowerCase();
MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
String mimeType = mimeTypeMap.getMimeTypeFromExtension(extension);
mMs.scanFile(mFile.getAbsolutePath(), mimeType);
}
#Override
public void onScanCompleted(String path, Uri uri) {
mMs.disconnect();
}
}
After this scan, my created file is deleted. And the value of uri is null in onScanCompleted.
Do you know why ?
Edited:
I tested on a Samsung Tab A and there is no problem. But on an Archos T101X4G it doesn't work.

In the end I think that the problem comes only from the tablet Archos: I just tested with WhatsApp and an image downloaded in WhatsApp also disappears...

android app download apk file and open it (to install)

I wonder if you can help, I'm trying to download an apk file as an update after version check.
it's downloading the apk but it will not open the apk file its printing an error when trying to open the apk
error :
E/UpdateAPP: Update error! file:///storage/emulated/0/download/update.apk exposed beyond app through Intent.getData()
code :
public class UpdateApp extends AsyncTask<String,Void,Void> {
private Context context;
public void setContext(Context contextf){
context = contextf;
}
#Override
protected Void doInBackground(String... arg0) {
try {
URL url = new URL(arg0[0]);
HttpURLConnection c = (HttpURLConnection) url.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
String PATH = Environment.getExternalStorageDirectory() + "/download/";
File file = new File(PATH);
file.mkdirs();
File outputFile = new File(file, "update.apk");
if(outputFile.exists()){
outputFile.delete();
}
FileOutputStream fos = new FileOutputStream(outputFile);
InputStream is = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
fos.close();
is.close();
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + "/update.apk")), "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // without this flag android returned a intent error!
context.startActivity(intent);
} catch (Exception e) {
Log.e("UpdateAPP", "Update error! " + e.getMessage());
}
return null;
}}
my targetSdkVersion :
targetSdkVersion 27
thanks for the help

Since API 26, 'REQUEST_INSTALL_PACKAGES' permission is necessary permission to achieve install apk file.
Make 'file_paths.xml' in res/xml folder to use FileProvider api
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="" path="/" />
</paths>
Declare FileProvider and permission in AndroidManifest.xml
Note. I used Androidx version of FileProvider, if you don't use androidx, make sure android.support.v4.content.FileProvider
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="{PACKAGE_NAME}.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths" />
</provider>
Get 'Uri' by FileProvider api and request install permission
private fun openFile(file: File) {
val uri = if (Build.VERSION.SDK_INT >= 24) {
val authority = packageName + ".fileprovider"
FileProvider.getUriForFile(this, authority, file)
} else {
Uri.fromFile(file)
}
val myMime = MimeTypeMap.getSingleton()
val mimeType = myMime.getMimeTypeFromExtension(file.extension)
val intent = Intent(Intent.ACTION_VIEW).apply {
setDataAndType(uri, mimeType)
flags = Intent.FLAG_ACTIVITY_NEW_TASK
addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
}
if (Build.VERSION.SDK_INT >= 26 && !packageManager.canRequestPackageInstalls()) {
startActivity(
Intent(
Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES,
Uri.parse("package:$packageName")
)
)
} else {
intent.action = Intent.ACTION_VIEW
startActivity(intent)
}
}
Edit -> remove specific methods using in my project.

Android: Cannot add attachment: `SecurityException when openAssetFileDescriptor`

I am unable to attach my file in native android email or Gmail application.
Gmail gives me this error:
2019-01-17 16:33:17.884 15415-15415/? E/Gmail: Gmail:Error adding attachment
fjd: SecurityException when openAssetFileDescriptor.
That is the code where save the file on storage:
public Uri getUrlFromDrawable(String base64ImageData) {
FileOutputStream fos;
try {
final String pureBase64Encoded = base64ImageData.substring(base64ImageData.indexOf(",") + 1);
final byte[] decodedBytes = Base64.decode(pureBase64Encoded, Base64.DEFAULT);
String filename = "receipt2_" + System.currentTimeMillis() + ".jpg";
File file = new File(reactContext.getExternalFilesDir(Environment.DIRECTORY_PICTURES), filename);
fos = new FileOutputStream(file);
fos.write(decodedBytes);
fos.flush();
fos.close();
Uri contentUri = FileProvider.getUriForFile(getReactApplicationContext(), "com.myapp.fileprovider", file);
return contentUri;
}
return null
}
And here is my function to send the mail:
public void mail(ReadableMap options, Callback callback) {
Intent i = new Intent(Intent.ACTION_SENDTO);
i.setData(Uri.parse("mailto:"));
if (options.hasKey("subject") && !options.isNull("subject")) {
i.putExtra(Intent.EXTRA_SUBJECT, options.getString("subject"));
}
if (options.hasKey("body") && !options.isNull("body")) {
String body = options.getString("body");
i.putExtra(Intent.EXTRA_TEXT, Html.fromHtml(new StringBuilder().append(body).toString())
);
}
if (options.hasKey("recipients") && !options.isNull("recipients")) {
ReadableArray recipients = options.getArray("recipients");
i.putExtra(Intent.EXTRA_EMAIL, readableArrayToStringArray(recipients));
}
if (options.hasKey("receipt") && !options.isNull("receipt")) {
String base64ImageData = options.getString("receipt");
try {
if (base64ImageData != null) {
Uri imageUri = getUrlFromDrawable(base64ImageData);
i.putExtra(Intent.EXTRA_STREAM, imageUri);
}
} catch (Exception e) {
Log.e("ERROR", "Cannot save receipt");
}
}
PackageManager manager = reactContext.getPackageManager();
List<ResolveInfo> list = manager.queryIntentActivities(i, 0);
if (list == null || list.size() == 0) {
callback.invoke("not_available");
return;
}
if (list.size() == 1) {
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
try {
reactContext.startActivity(i);
} catch (Exception ex) {
callback.invoke("error");
}
} else {
Intent chooser = Intent.createChooser(i, "Send Mail");
chooser.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
try {
reactContext.startActivity(chooser);
} catch (Exception ex) {
callback.invoke("error");
}
}
}
Here is the fileprovider.xml
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-files-path
name="Pictures"
path="/" />
</paths>
And here is the provider in `AndroidManifest.xml
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.myapp.fileprovider"
tools:replace="android:authorities"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
tools:replace="android:resource"
android:resource="#xml/fileprovider" />
</provider>

I managed to fix it by granting permission at runtime like this
List<ResolveInfo> list = manager.queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo resolveInfo : list) {
String packageName = resolveInfo.activityInfo.packageName;
reactContext.grantUriPermission(packageName, imageUri , Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
}

If you also add it as ClipData, the permission grant will work successfully:
yourIntent.clipData = ClipData.newUri(context.contentResolver, fileName, contentUri)
The culprit is that Intent.FLAG_GRANT_READ_URI_PERMISSION will work only for Intent.data and Intent.clipData, and not for extras, unless the uri permission grant has been given explictly (inconvenient), or has been given by also adding a ClipData.
Note that your answer also worked, though I find it a little less convenient since for Android 11+, it requires you to declare queries in the AndroidManifest.xml, which might also be a privacy issue in some cases.

Using Bitmap for saving image to Gallery in Android application with camera app

I have problems when i use some code from Capture Image from Camera and Display in Activity and https://developer.android.com/training/camera/photobasics.html
First, this is in MainActivity.java. I create onClickevent when user press button "snap"
Button snap = (Button) findViewById(R.id.button3);
snap.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent start_cam = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File path = null;
try {
path = createImageFile();
}
catch(Exception e)
{
Toast.makeText(getApplicationContext(),e.toString(),Toast.LENGTH_LONG).show();
}
if(path!=null) {
start_cam.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(path));
startActivityForResult(start_cam, 1);
}
}
});
Next, i add createImageFile() method
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, // prefix
".jpg", // suffix
storageDir // directory
);
// Save a file: path for use with ACTION_VIEW intents
root_file = "file:" + image.getAbsolutePath();
return image;
}
Last part, I add onActivityResult()
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1 && resultCode == RESULT_OK) {
try {
m = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.parse(root_file));
try {
view.setImageBitmap(m);
}
catch(Exception e)
{
Toast.makeText(getApplicationContext(),e.toString(),Toast.LENGTH_LONG).show();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
I also add heading in my AndroidManifest.xml
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
After, i use this feature in android emulator API19 Nexus_one API19 (take a photo). The dialog appears and said "java.lang.nullPointerException".
I don't know why this problem appears. I think it may be my emulator or code.