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APK splits allow developers to build multiple APKs for different screen sizes and ABIs. Enabling APK splits ensures that the minimum amount of files required to support a particular device are packaged into an APK.

The following snippet shows an example build.gradle with APK splits enabled.

```
apply plugin: 'com.android.application'

android {
    // Specify that we want to split up the APK based on ABI
    splits {

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long startTime;
long endTime;
long fileSize;
OkHttpClient client = new OkHttpClient();

// bandwidth in kbps
private int POOR_BANDWIDTH = 150;
private int AVERAGE_BANDWIDTH = 550;
private int GOOD_BANDWIDTH = 2000;

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NetworkInfo info = Connectivity.getNetworkInfo(context);
if(info.getType() == ConnectivityManager.TYPE_WIFI){
        // do something
} else if(info.getType() == ConnectivityManager.TYPE_MOBILE){
      // check NetworkInfo subtype
      if(info.getSubtype() == TelephonyManager.NETWORK_TYPE_GPRS){
           // Bandwidth between 100 kbps and below
      } else if(info.getSubtype() == TelephonyManager.NETWORK_TYPE_EDGE){
           // Bandwidth between 50-100 kbps
      } else if(info.getSubtype() == TelephonyManager.NETWORK_TYPE_EVDO_0){

tosinonikute

private ConnectionQuality mConnectionClass = ConnectionQuality.UNKNOWN;
private ConnectionClassManager mConnectionClassManager;
private DeviceBandwidthSampler mDeviceBandwidthSampler;
private ConnectionChangedListener mListener;

@Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

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// Listener to update the UI upon connectionclass change.
    private class ConnectionChangedListener
            implements ConnectionClassManager.ConnectionClassStateChangeListener {

        @Override
        public void onBandwidthStateChange(ConnectionQuality bandwidthState) {
            mConnectionClass = bandwidthState;
            runOnUiThread(new Runnable() {
                @Override
                public void run() {

tosinonikute

@Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mConnectionClassManager = ConnectionClassManager.getInstance();
        mDeviceBandwidthSampler = DeviceBandwidthSampler.getInstance();

}

tosinonikute

OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
                .url("IMAGE_URL_HERE")
                .build();

        mDeviceBandwidthSampler.startSampling();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Request request, IOException e) {
                e.printStackTrace();

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compile 'com.facebook.network.connectionclass:connectionclass:1.0.1'

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compile 'com.squareup.okhttp3:okhttp:3.3.0'

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<?php
$url = "https://fcm.googleapis.com/fcm/send";

$values = array();
$values ['title'] = "This is my message title";
$values ['body'] =  "This is my message body";

$data = array();
$data ['to'] = "/topics/news";
$data ['data'] = $values;