Just in case anyone falls here, the (only) solution that worked for me is creating the OkHttpClient like explained here. Here is the code: private static OkHttpClient getUnsafeOkHttpClient() { try { // Create a trust manager that does not validate certificate chains final TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() { @Override public void … Read more
Answer to your first question: Your broadcast receiver is being called two times because You have added two <intent-filter> Change in network connection : <action android:name=”android.net.conn.CONNECTIVITY_CHANGE” /> Change in WiFi state: <action android:name=”android.net.wifi.WIFI_STATE_CHANGED” /> Just use one: <action android:name=”android.net.conn.CONNECTIVITY_CHANGE” />. It will respond to only one action instead of two. See here for more information. … Read more
This method checks whether mobile is connected to internet and returns true if connected: private boolean isNetworkConnected() { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo() != null && cm.getActiveNetworkInfo().isConnected(); } in manifest, <uses-permission android:name=”android.permission.ACCESS_WIFI_STATE” /> <uses-permission android:name=”android.permission.ACCESS_NETWORK_STATE” /> Edit: This method actually checks if device is connected to internet(There is a possibility it’s connected to … Read more
I’m hoping someone can provide some concrete examples of best use cases for each. Use Retrofit if you are communicating with a Web service. Use the peer library Picasso if you are downloading images. Use OkHTTP if you need to do HTTP operations that lie outside of Retrofit/Picasso. Volley roughly competes with Retrofit + Picasso. … Read more
If the device is in airplane mode (or presumably in other situations where there’s no available network), cm.getActiveNetworkInfo() will be null, so you need to add a null check. Modified (Eddie’s solution) below: public boolean isOnline() { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netInfo = cm.getActiveNetworkInfo(); return netInfo != null && netInfo.isConnectedOrConnecting(); } Also add … Read more
NOTE : AsyncTask was deprecated in API level 30. AsyncTask | Android Developers This exception is thrown when an application attempts to perform a networking operation on its main thread. Run your code in AsyncTask: class RetrieveFeedTask extends AsyncTask<String, Void, RSSFeed> { private Exception exception; protected RSSFeed doInBackground(String… urls) { try { URL url = … Read more