Android Vision: Detector dependencies are not yet available - ocr

Question

I'm trying to create a simple App to detect a text using mobile camera, and I found This tutorial. But it doesn't work with me... The error is

Detector dependencies are not yet available

Java:

 TextRecognizer textRecognizer = new TextRecognizer.Builder(getApplicationContext()).build();

    if (!textRecognizer.isOperational()) {
        Toast.makeText(this,"Detector Dependies not available yet", Toast.LENGTH_LONG).show();}

Manifest:

<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application> <meta-data
        android:name="com.google.android.gms.vision.DEPENDENCIES"
        android:value="ocr"/> </application>

Gradle:

 compile 'com.google.android.gms:play-services-vision:9.8.0'

I searched a lot and tried the below and unfortunately still not working...

• Updated Google Play Services.
• Cleared Google Play Services Cache.
• Free more that 10% of device memory.
• compiled the latest com.google.android.gms:play-services-vision Library.
• Rebooted device several times.