Android: How to Upload Images from the SD Card

In my application, I want to uplo开发者_开发问答ad the images from the SD card with restricting the user to upload only less than 2mb. How can I accomplish this?

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Use following steps:

1) Use the following intent to open gallery with images:

Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 101);

2) Receive the Uri of selected file in onActivityResult func.

if (requestCode == 101 && data != null) {

            Uri selectedImageUri = data.getData();
} else {
            Toast toast = Toast.makeText(this, "No Image is selected.",
                    Toast.LENGTH_LONG);
            toast.show();
        }

Convert the Uri into a path using following func:

public String getPath(Uri uri) {
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

After that create a File object from the path and then check the size of file:

File mFile = new File(path);
int length = mFile.length(); // file size in bytes

After that you can simply put an if-else to check the file size restriction and then use multi-part upload process for uploading the file.

you can use this article for multipart upload.