So I have a bitmap and after I edit it I want that the User can save it and see it in the gallery. I was searching in google and a found many Ideas but all I tried didn't work. This is my code:
((ImageButton) findViewById(R.id. imageButton)).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String root = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString();
File myDir = new File(root + "/saved_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-" + n + ".jpg";
File file = new File(myDir, fname);
if (file.exists())
file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
mutableBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
}
catch (Exception e) {
e.printStackTrace();
}
// Tell the media scanner about the new file so that it is
// immediately available to the user.
MediaScannerConnection.scanFile(MainActivity7.this, new String[] { file.toString() }, null,
new MediaScannerConnection.OnScanCompletedListener() {
public void onScanCompleted(String path, Uri uri) {
Log.i("ExternalStorage", "Scanned " + path + ":");
Log.i("ExternalStorage", "-> uri=" + uri);
}
});
}
});
So whats wrong or do you have any other solutions how I can save my bitmap in the gallery?
Go to Settings > App and find Storage permission is allowed for your app or not. If not, allow it and try again.
Related
I use this code to save the image in the divice and it is working good
but I have problem with image name, I don't know what to tape here (I download the image from url with picasso).
Here is the code:
void saveMyImage (String appName, String imageUrl, String imageName) {
Bitmap bmImg = loadBitmap(imageUrl);
File filename;
try {
String path1 = android.os.Environment.getExternalStorageDirectory()
.toString();
File file = new File(path1 + "/" + appName);
if (!file.exists())
file.mkdirs();
filename = new File(file.getAbsolutePath() + "/" + imageName
+ ".jpg");
FileOutputStream out = new FileOutputStream(filename);
bmImg.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
ContentValues image = new ContentValues();
image.put(Images.Media.TITLE, appName);
image.put(Images.Media.DISPLAY_NAME, imageName);
image.put(Images.Media.DESCRIPTION, "App Image");
image.put(Images.Media.DATE_ADDED, System.currentTimeMillis());
image.put(Images.Media.MIME_TYPE, "image/jpg");
image.put(Images.Media.ORIENTATION, 0);
File parent = filename.getParentFile();
image.put(Images.ImageColumns.BUCKET_ID, parent.toString()
.toLowerCase().hashCode());
image.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, parent.getName()
.toLowerCase());
image.put(Images.Media.SIZE, filename.length());
image.put(Images.Media.DATA, filename.getAbsolutePath());
Uri result = getContentResolver().insert(
Images.Media.EXTERNAL_CONTENT_URI, image);
Toast.makeText(getApplicationContext(),
"download in " + filename, Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
This is the call method in onCreate:
/* button to download the image */
download_image = findViewById(R.id.button_download);
checkPermission();
download_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (checkPermission()) {
String URL = intent.getStringExtra("imageUrl");
saveMyImage ("my app",URL,"i want to get the image name from the url");
}
}
});
I want to get the image name from the url, so how can I do that?
Try this:
URI uri = new URI(URL);
URL videoUrl = uri.toURL();
File tempFile = new File(videoUrl.getFile());
String fileName = tempFile.getName();
In my App the user is able to save images from a pciture gallery to the local device by clicking on a DL Button.
The Code does work on old devices but on API 29 it has the following behaviour:
While saving I tried to open the Gallery to have a look what happens: the gallery gets updated and for 1 second an empty images appears and disappears immediately after. I get noticed, that the image got saved but it doesn't appear, not even in the device explorer.
//DEXTER HERE
Picasso.get().load(dummyimage.getLarge()).placeholder(R.drawable.ic_img_error).error(R.drawable.ic_red).into(saveImageToDirectory);
final Target saveImageToDirectory = new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
ProgressDialog mydialog = new ProgressDialog(getActivity());
mydialog.setMessage("saving Image to phone");
mydialog.show();
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
try {
String fileName = "myApp_" + timeStamp + ".JPG";
String dirName= "/myApp";
File file = new File(requireActivity().getApplicationContext().getExternalFilesDir(null).getAbsolutePath() + dirName, fileName);
//new File(path for the file to be saved, saving file name)
if (!file.exists()) {
//check if the file already exist or if not create a new file
//if exist the file will be overwritten with the new image
File filedirectory = new File(requireActivity().getApplicationContext().getExternalFilesDir(null).getAbsolutePath() + dirName);
filedirectory.mkdirs();
}
if (file.exists()) {
file.delete();
}
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, ostream);
Toast.makeText(getActivity(), "Picture saved to Gallery" + file.getAbsolutePath(), Toast.LENGTH_SHORT).show();
ostream.close();
mydialog.dismiss();
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "My Images");
values.put(MediaStore.MediaColumns.MIME_TYPE, "image/jpeg");
values.put(MediaStore.MediaColumns.RELATIVE_PATH,"/myApp");
// API LEVEL Q: values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis());
values.put("_data", file.getAbsolutePath());
ContentResolver cr = getActivity().getContentResolver();
cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
} catch (Exception e) {
mydialog.dismiss();
Log.e("file creation error", e.toString());
}
}
#Override
public void onBitmapFailed(Exception e, Drawable errorDrawable) {
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
}
};
As you may see, instead of
File filedirectory = new File(Environment.getExternalStorageDirectory() + dirName);
I'm already using
File filedirectory = new File(requireActivity().getApplicationContext().getExternalFilesDir(null).getAbsolutePath() + dirName);
I hope this shouldn't be the problem, but I'm a little stuck on this strange behaviour.
This is the error I'm getting out of my Logcat:
E/file creation error: java.lang.IllegalArgumentException: Primary
directory (invalid) not allowed for
content://media/external/images/media; allowed directories are [DCIM,
Pictures]
PS: I'm using Dexter to avoid problems with the permissions
Try this
private Uri saveImage(Context context, Bitmap bitmap, #NonNull String folderName, #NonNull String fileName) throws IOException
{
OutputStream fos;
File imageFile = null;
Uri imageUri = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
ContentResolver resolver = context.getContentResolver();
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, fileName);
contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "image/png");
contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, "DCIM" + File.separator + folderName);
imageUri = resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
fos = resolver.openOutputStream(imageUri);
} else {
String imagesDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DCIM).toString() + File.separator + folderName;
imageFile = new File(imagesDir);
if (!imageFile.exists()) {
imageFile.mkdir();
}
imageFile = new File(imagesDir, fileName + ".png");
fos = new FileOutputStream(imageFile);
}
boolean saved = bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.flush();
fos.close();
if (imageFile != null) // pre Q
{
MediaScannerConnection.scanFile(context, new String[]{imageFile.toString()}, null, null);
imageUri = Uri.fromFile(imageFile);
}
return imageUri;
}
And add requestLegacyExternalStorage in your Manifest file
<application
android:allowBackup="true"
android:icon="#drawable/icon"
android:requestLegacyExternalStorage="true"
android:label="#string/app_name"
android:roundIcon="#drawable/icon"
android:supportsRtl="true"
android:theme="#style/AppTheme">
...
...
...
</application>
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
In my app I have a fragment which opens the device camera and allows the users to take photos and store them in a directory inside the gallery. This is the method that I use to create the dir and save the taken image:
private void saveImage(Bitmap finalBitmap, String image_name) {
final String appDirectoryName = "/Feel/";
String root = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES).toString() + appDirectoryName;
File myDir = new File(root);
myDir.mkdirs();
String fname = "Image-" + image_name + ".jpg";
File file = new File(myDir, fname);
if (file.exists()) file.delete();
Log.i("LOAD", root + fname);
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Everything works fine except finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);. When it comes to this line it skips the process... The directory is not created too... What is causing this problem?
This is my CameraFragment, where I retrieve the photo that was shot:
final Button btnShoot = viewCamera.findViewById(R.id.btnShoot);
imgUltimaFoto.setVisibility(View.INVISIBLE);
btnShoot.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
cmrView.addCameraListener(new CameraListener() {
#Override
public void onPictureTaken(final byte[] picture) {
super.onPictureTaken(picture);
CameraUtils.decodeBitmap(picture, new CameraUtils.BitmapCallback() {
#Override
public void onBitmapReady(Bitmap bitmap) {
imgUltimaFoto.setImageBitmap(bitmap);
imgUltimaFoto.setVisibility(View.VISIBLE);
saveImage(bitmap,"imagem1");
}
});
}
});
cmrView.capturePicture();
}
});
I got an error in console crashes & anrs. This error is showing sometimes and I couldn't find where the problem is.
java.lang.NullPointerException
at java.io.File.fixSlashes(File.java:185)
at java.io.File.<init>(File.java:134)
The function code to save picture is:
public static String sharePhoto(Context context, Bitmap bmp) {
File folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pictures/Folder");
boolean success = true;
String file_path = null;
if (!folder.exists()) {
success = folder.mkdir();
}
if (success) {
file_path = folder + "/Img_" + System.currentTimeMillis() / 1000 + ".jpg";
}
OutputStream os = null;
try {
os = new FileOutputStream(file_path);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, os);
} catch (IOException e) {
e.printStackTrace();
}
} else {
// Do something else on failure
}
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(file_path);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
context.sendBroadcast(mediaScanIntent);
return file_path;
}
Try this:
File folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pictures/MyFolder");
Thing is that getExternalStorageDirectory() returns File. You need to get absolute path of that file and concatenate with "/Pictures/MyFolder".