Develop Reference

how to delete an image from android when its URI is known?

Im developing an android app which selects an image from the gallery in one activity and displays it in another.But when I try to delete the selected image it doesnt delete.I'm passing its uri between the two activies. Many thanks in Advance!!!!
Here's my Code :
ACTIVITY HOMESCREEN
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
Intent i = new Intent(this, Imageviewer.class);
i.putExtra("imgpath", uri.toString());
startActivity(i);
}
}
IMAGEVIEWER ACTIVITY :
Uri imageUri;
imageUri = Uri.parse(intent.getStringExtra("imgpath"));
File fdelete = new File(imageUri.toString());
if (fdelete.exists()) {
if (fdelete.delete()) {
System.out.println("file Deleted :" );
} else {
System.out.println("file not Deleted :");
}
}

First you must take real path of image:
//getting real path from uri
private String getFilePath(Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
if (cursor != null) {
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(projection[0]);
String picturePath = cursor.getString(columnIndex); // returns null
cursor.close();
return picturePath;
}
return null;
}
Then you can delete this file like below:
Uri imageUri;
imageUri = Uri.parse(intent.getStringExtra("imgpath"));
File fdelete = new File(getFilePath(imageUri));
if (fdelete.exists()) {
if (fdelete.delete()) {
System.out.println("file Deleted :" );
} else {
System.out.println("file not Deleted :");
}
}

Try this : (In the second Activity) ImageViewerActivity in your case.
Intent intent = getIntent();
String receivedPath = intent.getExtras().getString("imgpath");
File fdelete = new File(receivedPath);
if (fdelete.exists()) {
if (fdelete.delete()) {
System.out.println("file Deleted :" );
} else {
System.out.println("file not Deleted :");
}
}
Also you can debug your codes line by line to see and check if the ImgPath is getting correctly or not!

With kotlin you could do: uri.toFile().delete() and its deleted

Android pick image from gallery

I have selected an image from the gallery, now what I want is when the user reopens the app, the image is there in the ImageView, Please suggest me something, here is my code
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
imgDecodableString = cursor.getString(columnIndex);
cursor.close();
imgView = (de.hdodenhof.circleimageview.CircleImageView) findViewById(R.id.profileimg);
SharedPreferences.Editor editor = getSharedPreferences(AppConstants.VERIFICATION, MODE_PRIVATE).edit();
editor.putString(AppConstants.PROFILEIMAGE, imgDecodableString);
editor.commit();
} else {
Toast.makeText(this, "You haven't picked Image",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
.show();
}

Try this code:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
imgDecodableString = cursor.getString(columnIndex);
cursor.close();
imgView = (de.hdodenhof.circleimageview.CircleImageView) findViewById(R.id.profileimg);
Bitmap bmap = imgView.getDrawingCache();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bmap.compress(Bitmap.CompressFormat.PNG, 90, bytes);
byte[]imagebytes=bytes.toByteArray();
String encodedImage = Base64.encodeToString(imagebytes, Base64.DEFAULT);
SharedPreferences shre = PreferenceManager.getDefaultSharedPreferences(ProfilePage.this);
SharedPreferences.Editor edit=shre.edit();
edit.putString("image_data",encodedImage);
edit.commit();
} else {
Toast.makeText(this, "You haven't picked Image",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
.show();
}
add this below code to get shared preference
SharedPreferences shre = PreferenceManager.getDefaultSharedPreferences(this);
String previouslyEncodedImage = shre.getString("image_data", "");
if( !previouslyEncodedImage.equalsIgnoreCase("") ){
byte[] b = Base64.decode(previouslyEncodedImage, Base64.DEFAULT);
Bitmap bitmap = BitmapFactory.decodeByteArray(b, 0, b.length);
imgView.setImageBitmap(bitmap);
}

#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Here we need to check if the activity that was triggers was the Image Gallery.
// If it is the requestCode will match the LOAD_IMAGE_RESULTS value.
// If the resultCode is RESULT_OK and there is some data we know that an image was picked.
if (requestCode == LOAD_IMAGE_RESULTS && resultCode == RESULT_OK && data != null) {
// Let's read picked image data - its URI
Uri pickedImage = data.getData();
// Let's read picked image path using content resolver
String[] filePath = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(pickedImage, filePath, null, null, null);
cursor.moveToFirst();
String imagePath = cursor.getString(cursor.getColumnIndex(filePath[0]));
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap bitmap = BitmapFactory.decodeFile(imagePath, options);
// Do something with the bitmap
// At the end remember to close the cursor or you will end with the RuntimeException!
cursor.close();
}
}

Use
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
InputStream inputStream = getContentResolver()
.openInputStream(data.getData());
File outFile = new File(getCacheDir(),"tempImage.png");
FileOutputStream fileOutputStream = new FileOutputStream(
outFile);
copyStream(inputStream, fileOutputStream);
fileOutputStream.close();
inputStream.close();
Bitmap bm = BitmapFactory.decodeStream(inputStream);
imgView = (de.hdodenhof.circleimageview.CircleImageView) findViewById(R.id.profileimg);
imgView.setImageBitmap(bm);
SharedPreferences.Editor editor = getSharedPreferences(AppConstants.VERIFICATION, MODE_PRIVATE).edit();
editor.putString(AppConstants.PROFILEIMAGE, outFile.getAbsolutePath());
editor.commit();
} else {
Toast.makeText(this, "You haven't picked Image",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
.show();
}
public static void copyStream(InputStream input, OutputStream output)
throws IOException {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = input.read(buffer)) != -1) {
output.write(buffer, 0, bytesRead);
}
}

Captured image does not display on ImageView

In my Activity A, there is an ImageView and a Button. When the button is clicked, it goes to activeTakePhoto(). The imgUri gets displayed but nothing is displayed in my ImageView.
private void activeTakePhoto() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
String fileName = "temp.jpg";
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, fileName);
mCapturedImageURI = getContentResolver()
.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
values);
takePictureIntent
.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case RESULT_LOAD_IMAGE:
if (requestCode == RESULT_LOAD_IMAGE &&
resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver()
.query(selectedImage, filePathColumn, null, null,
null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
}
case REQUEST_IMAGE_CAPTURE:
if (requestCode == REQUEST_IMAGE_CAPTURE &&
resultCode == RESULT_OK) {
File picture = new File(Environment.getExternalStorageDirectory() + "/temp.jpg");
ImageView imgView=(ImageView)findViewById(R.id.imageView);
Uri imgUri=Uri.fromFile(picture);
imgView.setImageURI(imgUri);
Toast.makeText(getApplication(),imgUri+"",Toast.LENGTH_LONG).show();
}
}
}

You can try this code,it may help:
#Override
public void onClick(View v) {
if (v == imgCamera) {
Toast.makeText(getApplicationContext(), "open camera", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_REQUEST);
}
}//on click
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.e("RESULT CODE", "--" + resultCode);
if (resultCode == RESULT_OK) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
//to generate random file name
String fileName = "tempimg.jpg";
try {
Bitmap photo = (Bitmap) data.getExtras().get("data");
//captured image set in imageview
imageView.setImageBitmap(photo);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}

in activeTakePhoto
Replace
String fileName = "temp.jpg";
with
fileName=Environment.getExternalStorageDirectory().getAbsolutePath() + "/temp.jpg"

Select bitmap image from gallary and on button click save to Sdcard

hello very good noon to all.Actually i want to select an image from gallery and then i want to save the selected image in Sdcard which is available in android device.

pick image from Sd card:
Intent mediaChooser = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);
// comma-separated MIME types
mediaChooser.setType("image/*");
startActivityForResult(mediaChooser, RESULT_LOAD_WATER_IMAGE);
And On Activity Result :
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 0:
if (resultCode == RESULT_OK) {
String path;
path = getRealPathFromURI(data.getData());
}
break;
}
Implementation Of getRealPathFromURI:
public String getRealPathFromURI(Uri contentUri) {
try {
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(contentUri, proj, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} catch (Exception e) {
return contentUri.getPath();
}
}
Save Image To Sd Card On Click:
// TODO Auto-generated method stub
String root = Environment.getExternalStorageDirectory()
.toString();
File myDir = new File(root + "/Your Folder Name");
myDir.mkdirs();
String fname = "Your File Name";
File file = new File(myDir, fname);
if (file.exists())
file.delete();
try
{
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
}
catch (Exception e) {
e.printStackTrace();
System.out.println("error" + e);
}

Using the code below, you can pick up an image from gallery
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE);
After that, the picked up image will be return by the onActivityResult() method
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(resultCode == Activity.RESULT_OK && requestCode == PICK_IMAGE && data != null && data.getData() != null) {
Uri _uri = data.getData();
Cursor cursor = getContentResolver().query(_uri, new String[] { android.provider.MediaStore.Images.ImageColumns.DATA }, null, null, null);
cursor.moveToFirst();
//Get the image file path
final String imageFilePath = cursor.getString(0);
cursor.close();
//save it the sdcard
saveToSDCard(imageFilePath);
}
super.onActivityResult(requestCode, resultCode, data);
}

Get file path of image on Android

I have an app that can make pictures and upload them. The upload requires the file path of the photo but I can't get it.
This is my code:
public void maakfoto (View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
System.out.println(mImageCaptureUri);
}
}
Please help me to get the file path.

Posting to Twitter needs the image's actual path on the device to be sent in the request to post. I was finding it mighty difficult to get the actual path and more often than not I would get the wrong path.
To counter that, once you have a Bitmap, I use that to get the URI from using the getImageUri(). Subsequently, I use the tempUri Uri instance to get the actual path as it is on the device.
This is production code and naturally tested. ;-)
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
// CALL THIS METHOD TO GET THE URI FROM THE BITMAP
Uri tempUri = getImageUri(getApplicationContext(), photo);
// CALL THIS METHOD TO GET THE ACTUAL PATH
File finalFile = new File(getRealPathFromURI(tempUri));
System.out.println(mImageCaptureUri);
}
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}

Try out with mImageCaptureUri.getPath(); By Below Way :
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
//Get your Image Path
String Path=mImageCaptureUri.getPath();
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
System.out.println(mImageCaptureUri);
}

In order to take a picture you have to determine a path where you would like the image saved and pass that as an extra in the intent, for example:
private void capture(){
String directoryPath = Environment.getExternalStorageDirectory() + "/" + IMAGE_DIRECTORY + "/";
String filePath = directoryPath+Long.toHexString(System.currentTimeMillis())+".jpg";
File directory = new File(directoryPath);
if (!directory.exists()) {
directory.mkdirs();
}
this.capturePath = filePath; // you will process the image from this path if the capture goes well
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra( MediaStore.EXTRA_OUTPUT, Uri.fromFile( new File(filePath) ) );
startActivityForResult(intent, REQUEST_CAPTURE);
}
I just copied the above portion from another answer I gave.
However to warn you there are a lot of inconsitencies with image capture behavior between devices that you should look out for.
Here is an issue I ran into on some HTC devices, where it would save in the location I passed and in it's default location resulting in duplicate images on the device:
Deleting a gallery image after camera intent photo taken

I am doing this on click of Button.
private static final int CAMERA_PIC_REQUEST = 1;
private View.OnClickListener OpenCamera=new View.OnClickListener() {
#Override
public void onClick(View paramView) {
// TODO Auto-generated method stub
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
NewSelectedImageURL=null;
//outfile where we are thinking of saving it
Date date = new Date();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
String newPicFile = RecipeName+ df.format(date) + ".png";
String outPath =Environment.getExternalStorageDirectory() + "/myFolderName/"+ newPicFile ;
File outFile = new File(outPath);
CapturedImageURL=outFile.toString();
Uri outuri = Uri.fromFile(outFile);
cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, outuri);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
}
};
You can get the URL of the recently Captured Image from variable CapturedImageURL
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//////////////////////////////////////
if (requestCode == CAMERA_PIC_REQUEST) {
// do something
if (resultCode == RESULT_OK)
{
Uri uri = null;
if (data != null)
{
uri = data.getData();
}
if (uri == null && CapturedImageURL != null)
{
uri = Uri.fromFile(new File(CapturedImageURL));
}
File file = new File(CapturedImageURL);
if (!file.exists()) {
file.mkdir();
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+Environment.getExternalStorageDirectory())));
}
}
}

use this function to get the capture image path
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Uri mImageCaptureUri = intent.getData();
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
System.out.println(mImageCaptureUri);
//getImgPath(mImageCaptureUri);// it will return the Capture image path
}
}
public String getImgPath(Uri uri) {
String[] largeFileProjection = { MediaStore.Images.ImageColumns._ID,
MediaStore.Images.ImageColumns.DATA };
String largeFileSort = MediaStore.Images.ImageColumns._ID + " DESC";
Cursor myCursor = this.managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
largeFileProjection, null, null, largeFileSort);
String largeImagePath = "";
try {
myCursor.moveToFirst();
largeImagePath = myCursor
.getString(myCursor
.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.DATA));
} finally {
myCursor.close();
}
return largeImagePath;
}

You can do like that In Kotlin If you need kotlin code in the future
val myUri = getImageUri(applicationContext, myBitmap!!)
val finalFile = File(getRealPathFromURI(myUri))
fun getImageUri(inContext: Context, inImage: Bitmap): Uri {
val bytes = ByteArrayOutputStream()
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes)
val path = MediaStore.Images.Media.insertImage(inContext.contentResolver, inImage, "Title", null)
return Uri.parse(path)
}
fun getRealPathFromURI(uri: Uri): String {
val cursor = contentResolver.query(uri, null, null, null, null)
cursor!!.moveToFirst()
val idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA)
return cursor.getString(idx)
}

To get the path of all images in android I am using following code
public void allImages()
{
ContentResolver cr = getContentResolver();
Cursor cursor;
Uri allimagessuri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
String selection = MediaStore.Images.Media._ID + " != 0";
cursor = cr.query(allsongsuri, STAR, selection, null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
String fullpath = cursor.getString(cursor
.getColumnIndex(MediaStore.Images.Media.DATA));
Log.i("Image path ", fullpath + "");
} while (cursor.moveToNext());
}
cursor.close();
}
}

Simple Pass Intent first
Intent i = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
And u will get picture path on u onActivityResult
#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();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}