iPhone開發 當輸入的鍵盤會擋住UITextField的處理事件

//添加鍵盤的監聽事件

[[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotificationobject:nil];

 

#pragma mark 滾動scrollview 使被隱藏的textfield顯示在螢幕正確的位置（軟鍵盤的上方）

- (void)keyboardWasShown:(NSNotification*)aNotification {

NSDictionary* info = [aNotification userInfo];

    //鍵盤的大小

    CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    CGRect aRect = self.view.frame;

    aRect.size.height -= kbSize.height;

// 輸入項地區被認為定高

CGPoint activeFieldRect = activeText.frame.origin;

    int actHeight=activeFieldRect.y;

    int actSelfHeight=activeText.frame.size.height;

if(aRect.size.height-actHeight-actSelfHeight<0)

    {

        CGPoint scrollPoint = CGPointMake(0.0, -(aRect.size.height-actSelfHeight-actHeight));

        [scView setContentOffset:scrollPoint animated:YES];

    }

}

 

摘自 凡娃軟體