How To Send Saved CSV File Via Email Or Upload With Google Drive In Android?

I have a simple logging app that collects data into three arraylists, which I want saved to a CSV file and then shared to Google Drive, email, etc. Here is how I save the data: Str

Solution 1:

Create an xml file in res/xml/provider_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">

    <!--
     name is the file name
     path is the root of external storage, it means here: Environment.getExternalStorageDirectory()
     -->
    <external-path name="scale" path="."/>

    <!--
    another example:  Environment.getExternalStorageDirectory() + File.separator + "temps" + "myFile.pdf"
     -->
    <external-path name="myFile" path="temps"/>

</paths>

add provider in your application tag in manifest

<!--android:name="android.support.v4.content.FileProvider"-->
<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="your.application.package.fileprovider"
    android:grantUriPermissions="true"
    android:exported="false">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/provider_paths" />
</provider>

Finally change your code to this:

public static void sendEmailWithAttachment(Context context) {
    String filename="/scale.csv";
    File filelocation = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), filename);
    //Uri path = Uri.fromFile(filelocation);
    Uri path = FileProvider.getUriForFile(context, "your.application.package.fileprovider", filelocation);
    Intent emailIntent = new Intent(Intent.ACTION_SEND);
    // set the type to 'email'
    emailIntent .setType("vnd.android.cursor.dir/email");
    String to[] = {"email@gmail.com"};
    emailIntent .putExtra(Intent.EXTRA_EMAIL, to);
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Scale Data");
    emailIntent.putExtra(Intent.EXTRA_TEXT, "This is the body");
    emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
    // the attachment
    emailIntent .putExtra(Intent.EXTRA_STREAM, path);
    context.startActivity(Intent.createChooser(emailIntent, "Send mail..."));
}

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Some tips about defining file path from android docs

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<files-path name="name" path="path" />

Represents Context.getFilesDir()

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<cache-path name="name" path="path" />

Represents getCacheDir()

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<external-path name="name" path="path" />

Represents Environment.getExternalStorageDirectory().

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<external-cache-path name="name" path="path" />

Represents Context#getExternalFilesDir(String) Context.getExternalFilesDir(null)

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<external-media-path name="name" path="path" />

Represents Context.getExternalCacheDir().

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