Before adding key event interface can be open, but add the following code after the app open flash back, what is wrong with this code?

CodePudding user response:

Grabbed the log to see what error console report whether you didn't in androidManifest insert_question this class. The XML registration

CodePudding user response:

No assignment btn_insert,

CodePudding user response:

I also think it is 1 floor to say no in maninfest. Registered in the XML

CodePudding user response:

In the androidManifest. Registered in the XML, check again after the found that the problem is not in this code, is when I was in defining btn_insert to define him as a local variable rather than a global variable

CodePudding user response:

An error message comes to