Android - not able to attach a file in email

By default, files saved to the internal storage are private to your application and other applications cannot access them (nor can the user).

I am able to see the file "/data/data/package_name/files/ in file explore in DDMS, but when i attached the above file URI using imageUri in email , then i saw that attached file is of 0kb. i have used the default email APIs of Android.

Can anyone suggest me ,how to attach a file in email that is private to the application?

although i am successful able to save the file in SD card and attaching the file from SD card , this is working fine.

But if SD card is not available and saving the file to the internal storage , then how can i attach them in email.

String FILENAME = "hello_file.txt";
String string = "hello world!";FileOutputStream fos = openFileOutput(FILENAME,     Context.MODE_PRIVATE);
fos.write(string.getBytes());
fos.close();

File imageFile = getFileStreamPath(FILENAME );
Uri imageUri = Uri.fromFile(imageFile);

final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("*/*");
emailIntent.putExtra(android.content.Intent.EXTRA_STREAM,imageUri);

this.startActivityForResult(Intent.createChooser(emailIntent, "Send mail..."),SUB_ACTIVITY);

android email attachment

Edit Report

Android: Attaching files from internal cache to Gmail




package com.stephendnicholas.gmailattach; 

import java.io.File; 
import java.io.FileNotFoundException; 

import android.content.ContentProvider; 
import android.content.ContentValues; 
import android.content.UriMatcher; 
import android.database.Cursor; 
import android.net.Uri; 
import android.os.ParcelFileDescriptor; 
import android.util.Log; 

public class CachedFileProvider extends ContentProvider { 

    private static final String CLASS_NAME = "CachedFileProvider"; 

    // The authority is the symbolic name for the provider class 
    public static final String AUTHORITY = "com.stephendnicholas.gmailattach.provider"; 

    // UriMatcher used to match against incoming requests 
    private UriMatcher uriMatcher; 

    @Override
    public boolean onCreate() { 
        uriMatcher = new UriMatcher(UriMatcher.NO_MATCH); 

        // Add a URI to the matcher which will match against the form 
        // 'content://com.stephendnicholas.gmailattach.provider/*' 
        // and return 1 in the case that the incoming Uri matches this pattern 
        uriMatcher.addURI(AUTHORITY, "*", 1); 

        return true; 
    } 

    @Override
    public ParcelFileDescriptor openFile(Uri uri, String mode) 
            throws FileNotFoundException { 

        String LOG_TAG = CLASS_NAME + " - openFile"; 

        Log.v(LOG_TAG, 
                "Called with uri: '" + uri + "'." + uri.getLastPathSegment()); 

        // Check incoming Uri against the matcher 
        switch (uriMatcher.match(uri)) { 

        // If it returns 1 - then it matches the Uri defined in onCreate 
        case 1: 

            // The desired file name is specified by the last segment of the 
            // path 
            // E.g. 
            // 'content://com.stephendnicholas.gmailattach.provider/Test.txt' 
            // Take this and build the path to the file 
            String fileLocation = getContext().getCacheDir() + File.separ


                        
                        
                            answered 2013-01-15T10:30:05.657

Android - not able to attach a file in email

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