UIWebView键盘的accessoryBar隐藏Word格式文档下载.docx

1、 self.removeAccessoryBarForiOS8（keyboardWindow as UIView） else self.removeAccessoryBarForiOS7（keyboardWindow as UIView） self.removeAccessoryBarForiOS9（UIApplication.sharedApplication（）.windows.last! as UIView） func removeAccessoryBarForiOS9（keyboardWindow:UIView） - for possibleFormView:UIView in key

2、boardWindow.subviews if possibleFormView.isMemberOfClass（NSClassFromString（UIInputSetContainerView）!） for subviewOfInputSetContainerView in possibleFormView.subviews if subviewOfInputSetContainerView.isMemberOfClass（NSClassFromString（UIInputSetHostView for subviewOfInputSetHostView in subviewOfInput

3、SetContainerView.subviews / 隐藏工具条NSClassFromString if subviewOfInputSetHostView.isMemberOfClass（NSClassFromString（UIWebFormAccessory subviewOfInputSetHostView.layer.opacity = 0 subviewOfInputSetHostView.frame = CGRectZero else if （subviewOfInputSetHostView.isMemberOfClass（NSClassFromString（_UIRemote

4、KeyboardPlaceholderView） / 这里使用了私有方法获取对应的accessorBar，然后进行隐藏 var accessory = subviewOfInputSetHostView.performSelector（Selector（placeheldView）.takeRetainedValue（） if accessory.isMemberOfClass（NSClassFromString（ let accessory = accessory as! UIView accessory.layer.opacity = 0 accessory.frame = CGRectZ

5、ero / 键盘背景, UIKBInputBackdropView有两个只隐藏上面的 else if subviewOfInputSetHostView.isMemberOfClass（NSClassFromString（UIKBInputBackdropView） & subviewOfInputSetHostView.frame.size.height 100 subviewOfInputSetHostView.userInteractionEnabled = false func removeAccessoryBarForiOS8（keyboardWindow: / 隐藏工具条 func

6、 removeAccessoryBarForiOS7（keyboardWindow:UIPeripheralHostView for subviewOfPeripheralHostView in possibleFormView.subviews if subviewOfPeripheralHostView.isMemberOfClass（NSClassFromString（ subviewOfPeripheralHostView.layer.opacity = 0 subviewOfPeripheralHostView.frame = CGRectZero else if subviewOf

7、PeripheralHostView.isMemberOfClass（NSClassFromString（ subviewOfPeripheralHostView.frame.size.height subviewOfPeripheralHostView.userInteractionEnabled = false实际中，隐藏键盘accessory后的样子如下图：webview_keyboard_hideaccessory.png需要注意的是，在示例代码使用设置layer透明，frame为空来进行隐藏，而不使用removeFromSuperView，是因为使用了removeFromSuperV

8、iew，在键盘重新布局时会导致crash。当然如果有朋友解决了crash，使用removeFromSuperView会更好。附：上面示例代码Github地址使用removeFromSuperView产生crash的崩溃栈：2016-07-06 14:10:32.018 WebViewKeyBoard10846:930540 The view hierarchy is not prepared for the constraint: When added to a view, the constraints items must be descendants of that view （or t

9、he view itself）. This will crash if the constraint needs to be resolved before the view hierarchy is assembled. Break on -UIView（UIConstraintBasedLayout） _viewHierarchyUnpreparedForConstraint: to debug.930540 * Assertion failure in -UIInputSetHostView _layoutEngine_didAddLayoutConstraint:roundingAdj

10、ustment:mutuallyExclusiveConstraints:, /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3512.60.7/NSLayoutConstraint_UIKitAdditions.m:59032.025 WebViewKeyBoard10846:930540 * Terminating app due to uncaught exception NSInternalInconsistencyException, reason: Impossible to set up layout

11、 with view hierarchy unprepared for constraint.* First throw call stack:（ 0 CoreFoundation 0x0000000105517d85 _exceptionPreprocess + 165 1 libobjc.A.dylib 0x00000001072bbdeb objc_exception_throw + 48 2 CoreFoundation 0x0000000105517bea +NSException raise:format:arguments: + 106 3 Foundation 0x000000

12、0105968d5a -NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description: + 198 4 UIKit 0x0000000106626b99 _120-UIView（UIConstraintBasedLayout） _layoutEngine_didAddLayoutConstraint:_block_invoke_2 + 254 5 UIKit 0x000000010662698b -UIView（UIConstraintBasedLayout） _layoutEngine_didAddLa

13、youtConstraint: + 385 6 UIKit 0x0000000106626e04 -UIView（UIConstraintBasedLayout） _tryToAddConstraintWithoutUpdatingConstraintsArray: + 65 7 UIKit 0x0000000106626f7d -UIView（UIConstraintBasedLayout） _tryToAddConstraint: + 288 8 UIKit 0x000000010662719f -UIView（UIConstraintBasedLayout） _addConstraint

14、: + 274 9 UIKit 0x0000000106627438 _50-UIView（UIConstraintBasedLayout） addConstraints:_block_invoke + 197 10 Foundation 0x00000001058f23d3 -NSISEngine withBehaviors:performModifications: + 155 11 UIKit 0x0000000106626577 -UIView（UIConstraintBasedLayout） _withAutomaticEngineOptimizationDisabled: + 58

15、 12 UIKit 0x0000000106627348 -UIView（UIConstraintBasedLayout） addConstraints: + 379 13 UIKit 0x00000001066b5531 -UIInputWindowController updateViewConstraints + 3558 14 UIKit 0x00000001066b1fde -UIInputSetHostView _didChangeKeyplaneWithContext: + 224 15 UIKit 0x000000010650f1cc -_UIKBCompatInputView

16、 _didChangeKeyplaneWithContext: + 87 16 UIKit 0x0000000106004397 -UIKeyboard _didChangeKeyplaneWithContext: + 324 17 UIKit 0x0000000105fe7b04 -UIKeyboardImpl _didChangeKeyplaneWithContext: + 1100 18 UIKit 0x000000010620d5a3 -UIKeyboardLayoutStar（UIKeyboardLayoutJapanese50OnFlick） _didChangeKeyplaneW

17、ithContext: + 183 19 UIKit 0x00000001061f121e -UIKeyboardLayoutStar setKeyplaneName: + 4512 20 UIKit 0x0000000106209c37 -UIKeyboardLayoutStar setShift: + 158 21 UIKit 0x0000000105fec46a -UIKeyboardImpl notifyShiftState + 73 22 CoreFoundation 0x000000010543cc37 _CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVE

18、R_CALLBACK_FUNCTION_ + 23 23 CoreFoundation 0x000000010543cba7 _CFRunLoopDoObservers + 391 24 CoreFoundation 0x00000001054326c4 _CFRunLoopRun + 836 25 CoreFoundation 0x00000001054320f8 CFRunLoopRunSpecific + 488 26 GraphicsServices 0x0000000109badad2 GSEventRunModal + 161 27 UIKit 0x0000000105d3ff09 UIApplicationMain + 171 28 WebViewKeyBoard 0x000000010532a242 main + 114 29 libdyld.dylib 0x0000000107d7f92d start + 1 30 ? 0x0000000000000001 0x0 + 1）libc+abi.dylib: terminating with uncaught exception of type NSException