I try the solution given by u but after trying 100 s of time i am not able to solve problem please please please help me What u mean by timing in solution this problem start when i using ldr code then continues with every code This happen in android app
Nobody can even guess what you are trying to tell us.
The only android type device supported is the CHROMEBOOK app for the CREATE ONLINE EDITOR. For all other "android" apps you are better dealing with the maker/supplier of that app.
This is your first post on here so it would be unlikely anyone has given you advice yet. What solution ? What app ? What board ? etc etc etc.