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Volley-Singleton

★ 46 Open GitHub ↗

A common RequestQueue object for your Android app using Google Volley in the form of a Singleton.

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Volley-Singleton
================

A common RequestQueue object for your Android app using Google Volley in the form of a Singleton.

The singleton provides access to static RequestQueue and ImageLoader objects via its two methods:
```Java
    public RequestQueue getRequestQueue(){
        return this.mRequestQueue;
    }
    
    public ImageLoader getImageLoader(){
        return this.mImageLoader;
    }
```
#Setup

##Import Google Volley
Import the Google Volley Library into your Android project

https://android.googlesource.com/platform/frameworks/volley/

##Add VolleySingleton.java
Include the VolleySingleton.java class from this repository in your Android application.

##Update the singleton AppContext
On line 15 of the VolleySingleton.java class, update the context to be fetched from your Application class.

*There is a sample of what your Application class might look like in the MyApplication.java file.*

```Java
mRequestQueue = Volley.newRequestQueue(MyApplication.getAppContext());
```

*Also make sure that MyApplication is defined in your manifest*

```XML
<application android:name="com.company.MyApplication">

</application>
```

##Use it in your code
**Import the Volley packages**

```Java

import com.android.volley.VolleyError;
    import com.android.volley.toolbox.ImageLoader;
    import com.android.volley.toolbox.NetworkImageView;
```

**Instantiate an ImageLoader variable**

```Java
    private ImageLoader mImageLoader;
```

**Initialize the ImageLoader variable in your OnCreate() method**

```Java

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

mImageLoader = VolleySingleton.getInstance().getImageLoader();
    }
```

**Use it where appropriate**

```Java
     NetworkImageView avatar = (NetworkImageView)view.findViewById(R.id.twitter_avatar);
     avatar.setImageUrl("http://someurl.com/image.png",mImageLoader);
```

Volley-Singleton

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