- (void)textFieldDidBeginEditing:(UITextField *)textField{
??? NSArray *ws = [[UIApplication sharedApplication] windows];
??? for(UIView *w in ws){
??????? NSArray *vs = [w subviews];
??????? for(UIView *v in vs){
??????????? if([[NSString stringWithUTF8String:object_getClassName(v)] isEqualToString:@"UIPeripheralHostView"]){
??????????????? v.backgroundColor = [UIColor redColor];
??????????? }
??????? }
??? }
}