Android Manifest - "Has No Default Constructor" With Activity/Runnable Class

java android xml android-activity manifest

Android Activity classes must have a default constructor that takes no parameters. Your ChatConnect class has this constructor:

public ChatConnect(Socket s){        socket = s;}

But the system is looking for one like this:

public ChatConnect(){}

and not finding one, which is why it's crashing.

java android xml android-activity manifest

public ChatConnect(Socket s){    socket = s;}

Remove this constructor.Your activity has constructor. do not define constructor for activity.

CodeHunter