avoid_crash_on_ja_text_input.m �� �� @property (nonatomic, weak) UIResponder *maybeFirstResponder; // ... - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // UITextFieldTextDidBeginEditingNotificationを対象オブジェクトnilで監視 [[NSNotificationCenter defaultCenter] addObserverForName:UITextFieldTextDidBeginEditingNotification object:nil queue:nil