ADB doesn't see my Nexus 7 running on Android 6.0.1

Question

I am developing an Android application and testing with a Nexus 7 device which runs on Android 6.0.1.

The problem is that when I try to use this device to test ADB doesn't see it ! Here is my build.gradle file if you can help me :

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    useLibrary 'org.apache.http.legacy'

    defaultConfig {
        applicationId "com.sifast.gpstracking.client"
        minSdkVersion 19
        targetSdkVersion 19
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'org.apache.httpcomponents:httpclient:4.5'
}

Answer 1

You need to install Google USB Driver to connect to Nexus devices, see : http://developer.android.com/sdk/win-usb.html

Also you need to activate Developer Mode, by clicking multiple times on Build number under About phone

After you did this you can access Developer options there you can turn on USB debugging and when you connnect your device to the pc a dialog will pop up to allow this pc USB debugging.

If your device is connected successfully you should have a notification with USB debugging connected

Is that the case?