Here is the focus listener example. editText.setOnFocusChangeListener(new OnFocusChangeListener() { @Override public void onFocusChange(View view, boolean hasFocus) { if (hasFocus) { Toast.makeText(getApplicationContext(), “Got the focus”, Toast.LENGTH_LONG).show(); } else { Toast.makeText(getApplicationContext(), “Lost the focus”, Toast.LENGTH_LONG).show(); } } });
Protocol buffers is (are?) an Interface Definition Language and serialization library: You define your data structures in its IDL i.e. describe the data objects you want to use It provides routines to translate your data objects to and from binary, e.g. for writing/reading data from disk gRPC uses the same IDL but adds syntax “rpc” … Read more
Destination Host Unreachable This message indicates one of two problems: either the local system has no route to the desired destination, or a remote router reports that it has no route to the destination. If the message is simply “Destination Host Unreachable,” then there is no route from the local system, and the packets to … Read more
You can use: getActiveNetworkInfo(); ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); if (activeNetwork != null) { // connected to the internet if (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI) { // connected to wifi } else if (activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) { // connected to mobile data } } else { // not connected to the internet } … Read more
Don’t parse it. Just ask. import socket try: socket.inet_aton(addr) # legal except socket.error: # Not legal
If you’re on Mac, restarting the DNS responder fixed the issue for me. sudo killall -HUP mDNSResponder
As the others have said, you’ll have to kill all processes that are listening on that port. The easiest way to do that would be to use the fuser(1) command. For example, to see all of the processes listening for HTTP requests on port 80 (run as root or use sudo): # fuser 80/tcp If … Read more
If the problem is to find whether the phone’s network is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType(). It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it … Read more
bs := string(body) should be enough to give you a string. From there, you can use it as a regular string. A bit as in this thread (updated after Go 1.16 — Q1 2021 — ioutil deprecation: ioutil.ReadAll() => io.ReadAll()): var client http.Client resp, err := client.Get(url) if err != nil { log.Fatal(err) } defer … Read more
Well, the most likely difference is that you still have to do an actual lookup of localhost somewhere. If you use 127.0.0.1, then (intelligent) software will just turn that directly into an IP address and use it. Some implementations of gethostbyname will detect the dotted format (and presumably the equivalent IPv6 format) and not do … Read more