Android

Camera and Gallery

Taking full-sized photo from camera

Take photo

How to start camera or gallery and save camera result to storage

First of all you need Uri and temp Folders and request codes :

public final int REQUEST_SELECT_PICTURE = 0x01;
public final int REQUEST_CODE_TAKE_PICTURE = 0x2;
public static String TEMP_PHOTO_FILE_NAME ="photo_";
Uri mImageCaptureUri;
File mFileTemp;

Then init mFileTemp :

public void initTempFile(){
    String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state)) {

        mFileTemp = new File(Environment.getExternalStorageDirectory() + File.separator
                + getResources().getString(R.string.app_foldername) + File.separator
                + getResources().getString(R.string.pictures_folder)
                , TEMP_PHOTO_FILE_NAME
                + System.currentTimeMillis() + ".jpg");
        mFileTemp.getParentFile().mkdirs();
    } else {
        mFileTemp = new File(getFilesDir() + File.separator
                + getResources().getString(R.string.app_foldername)
                + File.separator + getResources().getString(R.string.pictures_folder)
                , TEMP_PHOTO_FILE_NAME + System.currentTimeMillis() + ".jpg");
        mFileTemp.getParentFile().mkdirs();
    }
}

Opening Camera and Gallery intents :

public void openCamera(){
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    try {
        mImageCaptureUri = null;
        String state = Environment.getExternalStorageState();
        if (Environment.MEDIA_MOUNTED.equals(state)) {
            mImageCaptureUri = Uri.fromFile(mFileTemp);

        } else {

            mImageCaptureUri = InternalStorageContentProvider.CONTENT_URI;

        }
        intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
        intent.putExtra("return-data", true);
        startActivityForResult(intent, REQUEST_CODE_TAKE_PICTURE);
    } catch (Exception e) {

        Log.d("error", "cannot take picture", e);
    }
}

public void openGallery(){
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN
            && ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)
            != PackageManager.PERMISSION_GRANTED) {
        requestPermission(Manifest.permission.READ_EXTERNAL_STORAGE,
                getString(R.string.permission_read_storage_rationale),
                REQUEST_STORAGE_READ_ACCESS_PERMISSION);
    } else {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        startActivityForResult(Intent.createChooser(intent, getString(R.string.select_image)), REQUEST_SELECT_PICTURE);
    }

}

Then in onActivityResult method :

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (resultCode != RESULT_OK) {
        return;
    }
    Bitmap bitmap;

    switch (requestCode) {

        case REQUEST_SELECT_PICTURE:
            try {
                Uri uri = data.getData();
                try {
                    bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
                    Bitmap bitmapScaled = Bitmap.createScaledBitmap(bitmap, 800, 800, true);
                    Drawable drawable=new BitmapDrawable(bitmapScaled);
                    mImage.setImageDrawable(drawable);
                    mImage.setVisibility(View.VISIBLE);
                } catch (IOException e) {
                    Log.v("act result", "there is an error : "+e.getContent());
                }
            } catch (Exception e) {
                Log.v("act result", "there is an error : "+e.getContent());
            }
            break;
        case REQUEST_CODE_TAKE_PICTURE:
            try{
               Bitmap bitmappicture = MediaStore.Images.Media.getBitmap(getContentResolver() , mImageCaptureUri);
               mImage.setImageBitmap(bitmappicture);
               mImage.setVisibility(View.VISIBLE);
           }catch (IOException e){
              Log.v("error camera",e.getMessage());
           }
           break; 
    }
    super.onActivityResult(requestCode, resultCode, data);
}

You need theese permissions in AndroidManifest.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" />

And you need to handle runtime permissions such as Read/Write external storage etc …

I am checking READ_EXTERNAL_STORAGE permission in my openGallery method :

My requestPermission method :

protected void requestPermission(final String permission, String rationale, final int requestCode) {
    if (ActivityCompat.shouldShowRequestPermissionRationale(this, permission)) {
        showAlertDialog(getString(R.string.permission_title_rationale), rationale,
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        ActivityCompat.requestPermissions(BasePermissionActivity.this,
                                new String[]{permission}, requestCode);
                    }
                }, getString(android.R.string.ok), null, getString(android.R.string.cancel));
    } else {
        ActivityCompat.requestPermissions(this, new String[]{permission}, requestCode);
    }
}

Then Override onRequestPermissionsResult method :

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    switch (requestCode) {
        case REQUEST_STORAGE_READ_ACCESS_PERMISSION:
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                handleGallery();
            }
            break;
        default:
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}

showAlertDialog method :

protected void showAlertDialog(@Nullable String title, @Nullable String message,
                               @Nullable DialogInterface.OnClickListener onPositiveButtonClickListener,
                               @NonNull String positiveText,
                               @Nullable DialogInterface.OnClickListener onNegativeButtonClickListener,
                               @NonNull String negativeText) {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(title);
    builder.setMessage(message);
    builder.setPositiveButton(positiveText, onPositiveButtonClickListener);
    builder.setNegativeButton(negativeText, onNegativeButtonClickListener);
    mAlertDialog = builder.show();
}

Set camera resolution

Set High resolution programmatically.

Camera mCamera = Camera.open();
Camera.Parameters params = mCamera.getParameters();

// Check what resolutions are supported by your camera
List<Size> sizes = params.getSupportedPictureSizes();

// Iterate through all available resolutions and choose one.
// The chosen resolution will be stored in mSize.
Size mSize;
for (Size size : sizes) {
    Log.i(TAG, "Available resolution: "+size.width+" "+size.height);
        mSize = size;
    }
}

Log.i(TAG, "Chosen resolution: "+mSize.width+" "+mSize.height);
params.setPictureSize(mSize.width, mSize.height);
mCamera.setParameters(params);

Decode bitmap correctly rotated from the uri fetched with the intent

private static final String TAG = "IntentBitmapFetch";
private static final String COLON_SEPARATOR = ":";
private static final String IMAGE = "image";

@Nullable
public Bitmap getBitmap(@NonNull Uri bitmapUri, int maxDimen) {
    InputStream is = context.getContentResolver().openInputStream(bitmapUri);
    Bitmap bitmap = BitmapFactory.decodeStream(is, null, getBitmapOptions(bitmapUri, maxDimen));
    
    int imgRotation = getImageRotationDegrees(bitmapUri);

    int endRotation = (imgRotation < 0) ? -imgRotation : imgRotation;
    endRotation %= 360;
    endRotation = 90 * (endRotation / 90);
    if (endRotation > 0 && bitmap != null) {
        Matrix m = new Matrix();
        m.setRotate(endRotation);
        Bitmap tmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), m, true);
        if (tmp != null) {
            bitmap.recycle();
            bitmap = tmp;
        }
    }

    return bitmap;
}

private BitmapFactory.Options getBitmapOptions(Uri uri, int imageMaxDimen){
    BitmapFactory.Options options = new BitmapFactory.Options();
    if (imageMaxDimen > 0) {
        options.inJustDecodeBounds = true;
        decodeImage(null, uri, options);
        options.inSampleSize = calculateScaleFactor(options, imageMaxDimen);
        options.inJustDecodeBounds = false;
        options.inPreferredConfig = Bitmap.Config.RGB_565;
        addInBitmapOptions(options);
    }
}

private int calculateScaleFactor(@NonNull BitmapFactory.Options bitmapOptionsMeasureOnly, int imageMaxDimen) {
    int inSampleSize = 1;
    if (bitmapOptionsMeasureOnly.outHeight > imageMaxDimen || bitmapOptionsMeasureOnly.outWidth > imageMaxDimen) {
        final int halfHeight = bitmapOptionsMeasureOnly.outHeight / 2;
        final int halfWidth = bitmapOptionsMeasureOnly.outWidth / 2;
        while ((halfHeight / inSampleSize) > imageMaxDimen && (halfWidth / inSampleSize) > imageMaxDimen) {
            inSampleSize *= 2;
        }
    }
    return inSampleSize;
}

    public int getImageRotationDegrees(@NonNull Uri imgUri) {
    int photoRotation = ExifInterface.ORIENTATION_UNDEFINED;

    try {
        boolean hasRotation = false;
        //If image comes from the gallery and is not in the folder DCIM (Scheme: content://)
        String[] projection = {MediaStore.Images.ImageColumns.ORIENTATION};
        Cursor cursor = context.getContentResolver().query(imgUri, projection, null, null, null);
        if (cursor != null) {
            if (cursor.getColumnCount() > 0 && cursor.moveToFirst()) {
                photoRotation = cursor.getInt(cursor.getColumnIndex(projection[0]));
                hasRotation = photoRotation != 0;
                Log.d("Cursor orientation: "+ photoRotation);
            }
            cursor.close();
        }

        //If image comes from the camera (Scheme: file://) or is from the folder DCIM (Scheme: content://)
        if (!hasRotation) {
            ExifInterface exif = new ExifInterface(getAbsolutePath(imgUri));
            int exifRotation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,
                    ExifInterface.ORIENTATION_NORMAL);
            switch (exifRotation) {
                case ExifInterface.ORIENTATION_ROTATE_90: {
                    photoRotation = 90;
                    break;
                }
                case ExifInterface.ORIENTATION_ROTATE_180: {
                    photoRotation = 180;
                    break;
                }
                case ExifInterface.ORIENTATION_ROTATE_270: {
                    photoRotation = 270;
                    break;
                }
            }
            Log.d(TAG, "Exif orientation: "+ photoRotation);
        }
    } catch (IOException e) {
        Log.e(TAG, "Error determining rotation for image"+ imgUri, e);
    }
    return photoRotation;
}

@TargetApi(Build.VERSION_CODES.KITKAT)
private String getAbsolutePath(Uri uri) {
    //Code snippet edited from: https://stackoverflow.com/a/20559418/2235133
    String filePath = uri.getPath();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, uri)) {
        // Will return "image:x*"
        String[] wholeID = TextUtils.split(DocumentsContract.getDocumentId(uri), COLON_SEPARATOR);
        // Split at colon, use second item in the array
        String type = wholeID[0];
        if (IMAGE.equalsIgnoreCase(type)) {//If it not type image, it means it comes from a remote location, like Google Photos
            String id = wholeID[1];
            String[] column = {MediaStore.Images.Media.DATA};
            // where id is equal to
            String sel = MediaStore.Images.Media._ID + "=?";
            Cursor cursor = context.getContentResolver().
                    query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                            column, sel, new String[]{id}, null);
            if (cursor != null) {
                int columnIndex = cursor.getColumnIndex(column[0]);
                if (cursor.moveToFirst()) {
                    filePath = cursor.getString(columnIndex);
                }
                cursor.close();
            }
            Log.d(TAG, "Fetched absolute path for uri" + uri);
        }
    }
    return filePath;
}
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