Google map not displayed in my android application now it displayed before two days

I developed apps with google map.I got map key i got google map in my application two days before .I did nt change anything but now i did not get the google map only show boxes .The logcat show couldn't get connection factory 开发者_JAVA百科client error.I searched this error but i can't get clear ans as well as map .So plz anyone help me to solve this problem.

Thanks , Lakshmanan

I've had that error appearing as well, so please check the following :

• Your API Key has been correctly generated (sadly, no tool to check for that) (see this tutorial)
• You have a INTERNET permission in your manifest, within the <manifest> tag
• You have a uses-library within the <application> tag
• You start the emulator with a Google Maps API Target
• You have internet (3G display) within the emulator

Just a small checklist, hope this helps !