iOS定制复杂UI

文章出处，原创于 https://HawkingOuYang.github.io/

我的GitHub

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键盘

iOS inputView 和 inputAccessoryView
http://blog.csdn.net/nyh1006/article/details/18735819

// #import “HTmSearchBar.h”

@interface HTmSearchBar ()
{
    BOOL m_isSet_InputView;
}
@end

@implementation HTmSearchBar
//! inputView属性 (2012年的iOS系统有这个属性，2016年的iOS系统没有这个属性)。
//@synthesize inputView=m_inputView;

/**
 参考资料
 Ref.:

 How To Implement Custom keyboard with UISearchBar? （2012年的帖子，现在2016年 亲测不可行）
 http://stackoverflow.com/questions/12805334/how-to-implement-custom-keyboard-with-uisearchbar

 Customkeyboard Implemention with UISearchBar?  （2013年的帖子，现在2016年 亲测不可行）
 http://stackoverflow.com/questions/12843523/customkeyboard-implemention-with-uisearchbar

 UITextField from UISearchBar in iOS 7.1    （2014年的帖子，现在2016年 亲测可行！就用这个！）
 http://stackoverflow.com/questions/22499379/uitextfield-from-uisearchbar-in-ios-7-1

 iphone UISearchBar Done button always enabled  （2011年的帖子，现在2016年 我没有测试）
 http://stackoverflow.com/questions/4728338/iphone-uisearchbar-done-button-always-enabled

 Getting reference to the top-most view/window in iOS application （可用作补充）
 http://stackoverflow.com/questions/3843411/getting-reference-to-the-top-most-view-window-in-ios-application
 */

- (void)layoutSubviews
{
    if (m_isSet_InputView == NO) {
        m_isSet_InputView = YES;

        /**
         UPDATE
         If your UISearchBar is in a UIViewController, try your code in method viewDidLoad or viewWillAppear!
         Don't look for UITextField as soon as you create UISearchBar (look for after UISearchBar has already appeared on screen)
         */

        /*
        UITextField *textFieldInSearchBar = [HTmSearchBar p_findTextFieldFromControl:self];
        textFieldInSearchBar.inputView = m_inputView;
         */
    }

    [super layoutSubviews];
}

#pragma mark - PUBLIC

// 从 view 的 视图层级中，找出 UITextField实例
+ (UITextField *)findTextFieldFromControl:(UIView *) view
{
    DDLogInfo(@"%@,%@", THIS_FILE,THIS_METHOD);

    //! 调用私有方法，注意这个 p_
    return [HTmSearchBar p_findTextFieldFromControl:view];
}

#pragma mark - private

/*
//! 从 view 的 视图层级中，找出 UITextField实例
+ (UITextField *)p_findTextFieldFromControl:(UIView *) view
{//iOS 9 之前
    for (UIView *subview in view.subviews)
    {
        if ([subview isKindOfClass:[UITextField class]])
        {
            return (UITextField *)subview;
        }
        else if ([subview.subviews count] > 0)
        {
            return [self findTextFieldFromControl:subview];
        }
    }
    return nil;
}
*/

// 从 view 的 视图层级中，找出 UITextField实例
+ (UITextField *)p_findTextFieldFromControl:(UIView *) view
{//iOS 9 以及之后

    DDLogInfo(@"%@,%@", THIS_FILE,THIS_METHOD);

    /**
     UITextField from UISearchBar in iOS 7.1    （2014年的帖子，现在2016年 亲测可行！就用这个！）
     http://stackoverflow.com/questions/22499379/uitextfield-from-uisearchbar-in-ios-7-1

     关键：
     Dint work for iOS 9 ... Probably Apple changed it again. Modified - (UITextField *) findTextFieldFromControl:(UIView *) view { int subViewIndex = 0; for (UIView *subview in view.subviews) { subViewIndex++; if ([subview isKindOfClass:[UITextField class]]) { return (UITextField *)subview; } else if (subViewIndex < view.subviews.count) { continue; } else if ([subview.subviews count] > 0) { subViewIndex = 0; return [self findTextFieldFromControl:subview]; } } return nil; }
     */

    int subViewIndex = 0;
    for (UIView *subview in view.subviews)
    {
        subViewIndex++;
        if ([subview isKindOfClass:[UITextField class]])
        {
            return (UITextField *)subview;
        }
        else if (subViewIndex < view.subviews.count)
        {
            continue;
        }
        else if ([subview.subviews count] > 0)
        {
            subViewIndex = 0;

            return [self p_findTextFieldFromControl:subview];
        }
    }

    DDLogError(@"%@,%@ %@", THIS_FILE,THIS_METHOD,@"在UISearchBar的视图层级中，没找到UITextField");
    return nil;
}

/*
 使得 UISearchBar 的 Done 按钮 总是可以点击
 iphone UISearchBar Done button always enabled
// loop around subviews of UISearchBar
for (UIView *searchBarSubview in [sourceView subviews]) {
    if ([searchBarSubview conformsToProtocol:@protocol(UITextInputTraits)]) {
        @try {
            // set style of keyboard
            [(UITextField *)searchBarSubview setKeyboardAppearance:UIKeyboardAppearanceAlert];

            // always force return key to be enabled
            [(UITextField *)searchBarSubview setEnablesReturnKeyAutomatically:NO];
        }
        @catch (NSException * e) {
            // ignore exception
        }
    }
}
*/

@end