显示iPhone软键盘,即使连接了硬件键盘

是。我们已经在我们的几个应用程序中完成了这一点，当用户将蓝牙扫描仪“键盘”与设备配对时。你可以做的是确保你的textField有一个inputAccessoryView，然后强制inputAccessoryView的框架。这将导致键盘在屏幕上显示。

我们在AppDelegate中添加了以下两个函数。 ‘inputAccessoryView’变量是我们在应用程序委托中声明的一个UIView *：

//This function responds to all textFieldBegan ediTing
// we need to add an accessory view and use that to force the keyboards frame
// this way the keyboard appears when the scAnner is attached
-(void) textFieldBegan: (Nsnotification *) theNotification
{
    UITextField *theTextField = [theNotification object];
    //  NSLog(@"textFieldBegan: %@",theTextField);

    if (!inputAccessoryView) {
        inputAccessoryView = [[UIView alloc] initWithFrame:CGRectMake(0,navigationController.view.frame.size.width,1)];
    }

    theTextField.inputAccessoryView = inputAccessoryView;

    [self performSELEctor:@SELEctor(forceKeyboard) withObject:nil afterDelay:0];
}

//Change the inputAccessoryView frame - this is correct for porTrait,use a different
// frame for landscape
-(void) forceKeyboard
{
    inputAccessoryView.superview.frame = CGRectMake(0,759,768,265);
}

然后在我们的applicationDidFinishLaunching中，我们添加了这个通知观察者，所以我们可以随时收到一个文本字段开始编辑的事件

//Setup the textFieldNotifications
    [[NsnotificationCenter defaultCenter] addObserver:self SELEctor:@SELEctor(textFieldBegan:) name:UITextFieldTextDidBeginEdiTingNotification object:nil];

希望有帮助！