Jonny Wright Jonny Wright - 1 month ago 9
Android Question

Gmail "Can't attach empty file"

My app creates a PDF using iText library (template PDF with forms which are filled) and I want to then attach it to an email to send. When I try to attach the file I get the error

Can't attach empty file
in the Gmail app. Have also tried with the HTC email app and Touchdown email app - both of which just don't attach anything and give no error.

Creating the PDF:

public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
AcroFields form = stamper.getAcroFields();

// Fill all PDF forms here (theres quite a few)

stamper.setFormFlattening(true);
stamper.close();
reader.close();
}


Attempting to attach file and send email:

public void sendMail(){
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent .setType("*/*");
emailIntent .putExtra(Intent.EXTRA_EMAIL, "blah@gmail.com");
emailIntent .putExtra(Intent.EXTRA_STREAM, Uri.parse(dest));
emailIntent .putExtra(Intent.EXTRA_SUBJECT, "Subject");
startActivity(Intent.createChooser(emailIntent, "Send email..."));
}


Where
dest
is the path and filename of the file in question. I know the path and filename in
dest
are ok as this is the var used to save the file (which I can view fine on both the device and on a PC).

Gmail logcat:

06-26 00:24:48.901 14476-14476/? E/Gmail﹕ Error adding attachment
com.android.mail.utils.b: Cannot attach empty attachment
at com.android.mail.ui.ComposeAttachmentTileGrid.a(SourceFile:62)
at com.android.mail.compose.c.b(SourceFile:1933)
at com.android.mail.compose.c.c(SourceFile:2063)
at com.android.mail.compose.c.a(SourceFile:7992)
at com.android.mail.compose.c.q(SourceFile:759)
at com.android.mail.compose.c.onCreate(SourceFile:4830)
at com.google.android.gm.ComposeActivityGmail.onCreate(SourceFile:194)
at android.app.Activity.performCreate(Activity.java:5958)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1129)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2474)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1359)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:155)
at android.app.ActivityThread.main(ActivityThread.java:5696)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)

Answer

I was facing a similar issue. CommonsWare's comment above resolved it.!

Create a File object and generate a Uri using Uri.fromFile() method.

File file = new File(filePath);
Uri uri = Uri.fromFile(file);
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