Android : Android unable to open Gmail attachments

I would like to open pdfs attachments with my app.

I have set up the intent-filter

<intent-filter android:label="@string/label" >
            <action android:name="android.intent.action.SEND" />
            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />
            <data android:mimeType="application/pdf" />
            <data android:mimeType="image/*" />
        </intent-filter>
        <intent-filter android:label="@string/label" >
            <action android:name="android.intent.action.SHARE" />
            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />
            <data android:mimeType="application/pdf" />
            <data android:mimeType="image/*" />
        </intent-filter>

and it works well on Android 4.4 devices but on 4.2.2 I get the following exception:

java.lang.SecurityException: Permission Denial: opening provider com.google.android.gm.provider.MailProvider from ProcessRecord{2120ac60 21661:com.some.app.package/u0a10113} (pid=21661, uid=10113) requires com.google.android.gm.permission.READ_GMAIL or com.google.android.gm.permission.WRITE_GMAIL

I have tried adding all these permissions:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="com.android.email.permission.READ_ATTACHMENT"/>
<uses-permission android:name="com.google.android.gm.permission.READ_GMAIL"/>
<uses-permission android:name="com.google.android.gm.permission.READ_CONTENT_PROVIDER"/>

Strangely if I try loading the same attachment but instead of using gmail I use default mail app, with same account, I get no errors.

but still get the same exception what can I do? thanks

EDIT:

I have also added these 2:

 <uses-permission android:name="com.google.android.providers.gmail.permission.READ_GMAIL"/> 
 <uses-permission android:name="com.google.android.providers.gmail.permission.WRITE_GMAIL"/>

still no luck

EDIT2:

This is how I get the exception triggered:

public static byte[] getBytesFromUri(Uri uri, Context appCtx) {

    ByteArrayOutputStream byteBuffer = null;
    InputStream inputStream = null;

    try {
        inputStream = appCtx.getContentResolver().openInputStream(uri); //crash here
        byteBuffer = new ByteArrayOutputStream();
        int bufferSize = 1024;
        byte[] buffer = new byte[bufferSize];
        int len = 0;
        while ((len = inputStream.read(buffer)) != -1) {
            byteBuffer.write(buffer, 0, len);
        }
        inputStream.close();
        inputStream=null;
        return byteBuffer.toByteArray();
    } catch (IOException e) {
        log.e(TAG, "error retrieving bytearray from uri "+uri);
        e.printStackTrace();
    }

    return null;
}