使用 Intent 在浏览器中打开 Base64

Question

i want to know if there is a way to open a Base64 with predefined MIME type with browser Intent. I have try something like this based on Android Studio Official Documentation :

    String url = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,[myBase64]"
    Uri webpage = Uri.parse(url);
    Intent intent = new Intent(Intent.ACTION_VIEW, webpage);
    if (intent.resolveActivity(getPackageManager()) != null) {
        startActivity(intent);
    }

If i try to paste url into chrome, it automatically prompt a download window, but when i try above code, i got error like this

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=data:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,[myBase64]

It seems that my url didn't accepted as valid url, how can i get my file from [mybase64] with browser intent ? any help or hint will be greatly appreciated.

thank you

Answer 1

As you say your url is not valid. I don't know if my answer is accurate, but reading it is entirely like a single string, so '[myBase64]' doesn't say anything.

Try concatenating your base64 file in it .

You need to remove the "data:image/png;base64,":

String imageB64 = url.substring(22);
byte[] decodedStr = Base64.decode(imageB64, Base64.NO_WRAP);

---

Documentation of Intent.ACTION_VIEW .

Source: Opening a URL in Android's web browser from within application

Answer 2

The solution depends on what is the required behavior. Do you want to download the file? If yes, you need to use Download Manager API for that.

If you need to open the file and let the Android OS select the appropriate application to open your intent, then you can set the mime type of your intent to spreadsheet first.