I build my app with FileProvider and I want to save the image after I take it. But I can't find the image in the gallery. I found these source codes from the Android Studio tutorial. I don't know what is the problem. I tried use debugger and I think the createFile() is correct. I also have my bitmap works. It can display the image I take but I can't add the image to the gallery.
I have this in my Manifest.xml
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.temp.test"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths"/>
</provider>
And in the file_paths.xml I have
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external" path="Android/data/com.temp.test/files/Pictures" />
</paths>
This is how I write the activity
private String mCurrentPhotoPath;
private ImageView mImageView;
private ImageButton StartCameraBtn;
private File photoFile = null;
//requestCode
private static final int REQUEST_IMAGE_CAPTURE = 1;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo_note);
mImageView = (ImageView) findViewById(R.id.imageView);
StartCameraBtn = (ImageButton) findViewById(R.id.StartCamera);
StartCameraBtn.setOnClickListener(this);
}
public void onClick(View view)
{
clearAllFocus();
switch (view.getId())
{
case R.id.StartCamera:
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null)
{
try
{
photoFile = createFile();
}
catch (IOException e)
{
e.printStackTrace();
}
if(photoFile != null){
Uri photoURI = FileProvider.getUriForFile(this,
"com.temp.test",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
break;
...
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
mImageView.setImageBitmap(null);
switch (requestCode)
{
case REQUEST_IMAGE_CAPTURE:
if (resultCode == RESULT_OK)
{
setPic();
galleryAddPic();
}
break;
}
}
private File createFile() throws IOException
{
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void galleryAddPic()
{
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
private void setPic()
{
// Get the dimensions of the View
int targetW = mImageView.getWidth();
int targetH = mImageView.getHeight();
// Get the dimensions of the bitmap
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions);
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
// Determine how much to scale down the image
int scaleFactor = Math.min(photoW/targetW, photoH/targetH);
// Decode the image file into a Bitmap sized to fill the View
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor;
bmOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoPath, bmOptions);
mImageView.setImageBitmap(bitmap);
}
Please help! Thank you!
I use debugger to test the galleryaddpic() and the URI has been accessed sucessfully, but I don't know why I can't add it to the gallery. I can't find the image file in the android VM directory either. This is the debug log:
https://i.stack.imgur.com/JN9uJ.png
I'm using chickendinner as my domian, and keep is the name of my app.
Thank you!
Your code handles
Intent.ACTION_MEDIA_SCANNER_SCAN_FILE
FileProvider
that allow other apps to access private //Android/data/com.temp.test/files/Pictures/...
files through a content-uri content://com.temp.test/...
I assume that the media-db scanner has no read-permission to your app-s private data directory Android/data/com.temp.test/files/Pictures
via a file-uri and therefore cannot add the new photo to media-db.
Whatsapp and other apps store their received/send photo in public readable internal memory (ie /sdcard/PICTURES/WhatsApp/ ) where the media scanner can read it via file-uri via Intent.ACTION_MEDIA_SCANNER_SCAN_FILE
.
I donot know, if the media scanner can handle content: -uris
instead of file uri-s
: You can try this:
private void galleryAddPic()
{
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
// assume that mCurrentPhotoPath ="Android/data/com.temp.test/files/Pictures/myTestImage.jpg"
// can be accessed from outside as "content://com.temp.test/myTestImage.jpg"
Uri contentUri = Uri.parse("content://com.temp.test/myTestImage.jpg");
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
Please let us know if this works.
If this does not work you can try to manually insert a "content://com.temp.test/..." entry into media database.
using public readable internal memory directories
should work without a fileprovider
Call this function in onActivityResult. It worked for me!
It is in fragment.In activity you can use "this" instead of "getActivity()".
private void galleryAddPic() {
File f = new File(imageFilePath); //set your picture's path
try {
MediaStore.Images.Media.insertImage(getActivity().getContentResolver(),
f.getAbsolutePath(), f.getName(), null);
getActivity().sendBroadcast(new Intent(
Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(f)));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
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