iOS 8自定义键盘：更改高度
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我试图在ios 8中创建一个替换库存的自定义键盘。我真的搜索过，无法找出是否有可能创建一个比iOS iOS键盘更高的键盘。我替换了UIInputView，但永远无法改变我可用的高度。
答案
这是我在Xcode 6.0 GM上的代码。两种方向都得到支持。
更新：感谢@SoftDesigner，我们现在可以消除constraint conflict警告。
警告：未测试XIB和故事板。据一些人报道，这不适用于XIB。
KeyboardViewController.h
#import <UIKit/UIKit.h>
@interface KeyboardViewController : UIInputViewController
@property (nonatomic) CGFloat portraitHeight;
@property (nonatomic) CGFloat landscapeHeight;
@property (nonatomic) BOOL isLandscape;
@property (nonatomic) NSLayoutConstraint *heightConstraint;
@property (nonatomic) UIButton *nextKeyboardButton;
@end
KeyboardViewController.m
#import "KeyboardViewController.h"
@interface KeyboardViewController ()
@end
@implementation KeyboardViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Perform custom initialization work here
self.portraitHeight = 256;
self.landscapeHeight = 203;
}
return self;
}
- (void)updateViewConstraints {
[super updateViewConstraints];
// Add custom view sizing constraints here
if (self.view.frame.size.width == 0 || self.view.frame.size.height == 0)
return;
[self.inputView removeConstraint:self.heightConstraint];
CGSize screenSize = [[UIScreen mainScreen] bounds].size;
CGFloat screenH = screenSize.height;
CGFloat screenW = screenSize.width;
BOOL isLandscape = !(self.view.frame.size.width ==
(screenW*(screenW<screenH))+(screenH*(screenW>screenH)));
NSLog(isLandscape ? @"Screen: Landscape" : @"Screen: Potriaint");
self.isLandscape = isLandscape;
if (isLandscape) {
self.heightConstraint.constant = self.landscapeHeight;
[self.inputView addConstraint:self.heightConstraint];
} else {
self.heightConstraint.constant = self.portraitHeight;
[self.inputView addConstraint:self.heightConstraint];
}
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Perform custom UI setup here
self.nextKeyboardButton = [UIButton buttonWithType:UIButtonTypeSystem];
[self.nextKeyboardButton setTitle:NSLocalizedString(@"Next Keyboard", @"Title for 'Next Keyboard' button") forState:UIControlStateNormal];
[self.nextKeyboardButton sizeToFit];
self.nextKeyboardButton.translatesAutoresizingMaskIntoConstraints = NO;
[self.nextKeyboardButton addTarget:self action:@selector(advanceToNextInputMode) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.nextKeyboardButton];
NSLayoutConstraint *nextKeyboardButtonLeftSideConstraint = [NSLayoutConstraint constraintWithItem:self.nextKeyboardButton attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0.0];
NSLayoutConstraint *nextKeyboardButtonBottomConstraint = [NSLayoutConstraint constraintWithItem:self.nextKeyboardButton attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeBottom multiplier:1.0 constant:0.0];
[self.view addConstraints:@[nextKeyboardButtonLeftSideConstraint, nextKeyboardButtonBottomConstraint]];
self.heightConstraint = [NSLayoutConstraint constraintWithItem:self.inputView attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0.0 constant:self.portraitHeight];
self.heightConstraint.priority = UILayoutPriorityRequired - 1; // This will eliminate the constraint conflict warning.
}
- (void)textWillChange:(id<UITextInput>)textInput {
// The app is about to change the document's contents. Perform any preparation here.
}
- (void)textDidChange:(id<UITextInput>)textInput {
}
@end
Swift 1.0版本：
class KeyboardViewController: UIInputViewController {
@IBOutlet var nextKeyboardButton: UIButton!
let portraitHeight:CGFloat = 256.0
let landscapeHeight:CGFloat = 203.0
var heightConstraint: NSLayoutConstraint?
override func updateViewConstraints() {
super.updateViewConstraints()
// Add custom view sizing constraints here
if (self.view.frame.size.width == 0 || self.view.frame.size.height == 0) {
return
}
inputView.removeConstraint(heightConstraint!)
let screenSize = UIScreen.mainScreen().bounds.size
let screenH = screenSize.height;
let screenW = screenSize.width;
let isLandscape = !(self.view.frame.size.width == screenW * ((screenW < screenH) ? 1 : 0) + screenH * ((screenW > screenH) ? 1 : 0))
NSLog(isLandscape ? "Screen: Landscape" : "Screen: Potriaint");
if (isLandscape) {
heightConstraint!.constant = landscapeHeight;
inputView.addConstraint(heightConstraint!)
} else {
heightConstraint!.constant = self.portraitHeight;
inputView.addConstraint(heightConstraint!)
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Perform custom UI setup here
self.nextKeyboardButton = UIButton.buttonWithType(.System) as UIButton
self.nextKeyboardButton.setTitle(NSLocalizedString("Next Keyboard", comment: "Title for 'Next Keyboard' button"), forState: .Normal)
self.nextKeyboardButton.sizeToFit()
self.nextKeyboardButton.setTranslatesAutoresizingMaskIntoConstraints(false)
self.nextKeyboardButton.addTarget(self, action: "advanceToNextInputMode", forControlEvents: .TouchUpInside)
self.view.addSubview(self.nextKeyboardButton)
var nextKeyboardButtonLeftSideConstraint = NSLayoutConstraint(item: self.nextKeyboardButton, attribute: .Left, relatedBy: .Equal, toItem: self.view, attribute: .Left, multiplier: 1.0, constant: 0.0)
var nextKeyboardButtonBottomConstraint = NSLayoutConstraint(item: self.nextKeyboardButton, attribute: .Bottom, relatedBy: .Equal, toItem: self.view, attribute: .Bottom, multiplier: 1.0, constant: 0.0)
self.view.addConstraints([nextKeyboardButtonLeftSideConstraint, nextKeyboardButtonBottomConstraint])
heightConstraint = NSLayoutConstraint(item: self.inputView, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1.0, constant: portraitHeight)
heightConstraint!.priority = 999.0
}
override func textWillChange(textInput: UITextInput) {
// The app is about to change the document's contents. Perform any preparation here.
}
override func textDidChange(textInput: UITextInput) {
// The app has just changed the document's contents, the document context has been updated.
var textColor: UIColor
var proxy = self.textDocumentProxy as UITextDocumentProxy
if proxy.keyboardAppearance == UIKeyboardAppearance.Dark {
textColor = UIColor.whiteColor()
} else {
textColor = UIColor.blackColor()
}
self.nextKeyboardButton.setTitleColor(textColor, forState: .Normal)
}
}
另一答案
为了更改方向上更流畅的动画，我添加：
- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
CGFloat width = [UIScreen mainScreen].bounds.size.width;
self.view.window.frame = CGRectMake(0, 0, width, heigth);
}
另一答案
我一直在制作一个键盘，并努力解决身高问题。我尝试了所有提到的解决方案以及App扩展编程指南解决方案，但无法修复它。我的键盘视图层次非常复杂。经过努力，我找到了一个完全适合我的解决方案。这是一种黑客，但我已经测试了所有场景，即使设备旋转，它是完美的。我认为它会帮助别人，所以我把我的代码放在这里..
// Keep this code inside the UIInputViewController
@implementation KeyBoardViewController
@property (strong, nonatomic) NSLayoutConstraint *heig以上是关于iOS 8自定义键盘：更改高度的主要内容，如果未能解决你的问题，请参考以下文章