wifi problem with android
You could try to use the "static IP settings":


Go to Settings -> Wireless and network -> Wi-Fi settings
Press menu button, select Advanced
Check Use static IP
Look for your PC's IP address, and enter a similar address for IP address (e.g. if your PC's one is 192.168.1.2, try 192.168.1.3).
Enter your router's IP as Gateway (usually 192.168.1.1 or 192.168.178.1 etc.)
Enter 255.255.255.0 as the netmask.


It is important that the IP address isn't already used in your network.