點擊 UITableView 隱藏鍵盤

在 UITableView 上加手勢

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];

- (void) hideKeyboard {
    [textField1 resignFirstResponder];
    [textField2 resignFirstResponder];
    ...
    ...
}

ps:加上這句不會影響你 tableview 上的 action (button,cell selected...)

gestureRecognizer.cancelsTouchesInView = NO;

原帖地址: http://stackoverflow.com/questions/2321038/dismiss-keyboard-by-touching-background-of-uitableview