Agfdhyk

I have files saved in data/data/package/files/myfolder/. I try to open them with the following method:

public static void openFile(Context context, File url) throws IOException {

    // Create URI

    File file = url;

    Uri uri = Uri.fromFile(file);

    Log.d("pathAttach", uri.toString());

    Intent intent = new Intent(Intent.ACTION_VIEW);



    if (url.toString().contains(".doc") || url.toString().contains(".docx")) {

        // Word document

        intent.setDataAndType(uri, "application/msword");

    } else if(url.toString().contains(".pdf")) {

        // PDF file

        intent.setDataAndType(uri, "application/pdf");

    } else if(url.toString().contains(".ppt") || url.toString().contains(".pptx")) {

        // Powerpoint file

        intent.setDataAndType(uri, "application/vnd.ms-powerpoint");

    } else if(url.toString().contains(".xls") || url.toString().contains(".xlsx")) {

        // Excel file

        intent.setDataAndType(uri, "application/vnd.ms-excel");

    } else if(url.toString().contains(".zip") || url.toString().contains(".rar")) {

        // WAV audio file

        intent.setDataAndType(uri, "application/x-wav");

    } else if(url.toString().contains(".rtf")) {

        // RTF file

        intent.setDataAndType(uri, "application/rtf");

    } else if(url.toString().contains(".wav") || url.toString().contains(".mp3")) {

        // WAV audio file

        intent.setDataAndType(uri, "audio/x-wav");

    } else if(url.toString().contains(".gif")) {

        // GIF file

        intent.setDataAndType(uri, "image/gif");

    } else if(url.toString().contains(".jpg") || url.toString().contains(".jpeg") || url.toString().contains(".png")) {

        // JPG file

        intent.setDataAndType(uri, "image/jpeg");

    } else if(url.toString().contains(".txt")) {

        // Text file

        intent.setDataAndType(uri, "text/plain");

    } else if(url.toString().contains(".3gp") || url.toString().contains(".mpg") || url.toString().contains(".mpeg") || url.toString().contains(".mpe") || url.toString().contains(".mp4") || url.toString().contains(".avi")) {

        // Video files

        intent.setDataAndType(uri, "video/*");

    } else {



        intent.setDataAndType(uri, "*/*");

    }   



    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    context.startActivity(intent);

}

The method does open the correct application for each type of file, however the application does not show the file why it says it does not exist.

The method calls it to call like this:

String pathAttach = context.getFilesDir().getAbsolutePath() +

                                File.separator + "myfolder/" +

                                messagesList.get(pos).getContent();

    FileOpenUitl.openFile(context, new File(pathAttach));

By console I have printed the value of pathAttach and uri.toString () the values obtained for an image are:

• pathAttach: /data/data/io.github.myuser.myapp/files/myfolder/6010141d505105c092eaf6d002a868a18b48544592cb304a3f173c30b4ee9892.jpeg




• uri.toString (): file: ///data/data/io.github.myuser.myapp/files/myfolder/6010141d505105c092eaf6d002a868a18b48544592cb304a3f173c30b4ee9892.jpeg

According to me everything is fine, but I do not understand why the applications can not load the file.

/data/data/package/ is your app's private space, and not readable by other applications.

solutions are:

1. export to somewhere in Environment::getExternalStorage() where readable by other applications


2. use FileProvider to grant temporary read access to your file.

use this

File file = new File("this is the file path");



Intent intent = new Intent();

intent.setAction(android.content.Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file), "this is the mime type of file");

startActivityForResult(intent, 100);