2018-11-11
iOS 11 下 iPhone X 键盘上 输入语言切换按钮点击无反应问题。如下图所示：
iPhone X键盘语言切换
找了好久最终参考stackoverflow上的解决方法定位了原因，附上链接
在工程中使用了一个UIButton的分类，导致了这个问题，分类实现如下：
#import <UIKit/UIKit.h>
@interfaceUIButton (Drag)
@property(nonatomic,assign,getter= isDragEnable) BOOL dragEnable;
@property(nonatomic,assign,getter= isAdsorbEnable)BOOLadsorbEnable;
@end
#import "UIButton+Drag.h"
#import <objc/runtime.h>
#define PADDING 5
#define BOTTOMPADDING 88
#define BUTTONWIDTH 70
static void *DragEnableKey = &DragEnableKey;
static void *AdsorbEnableKey = &AdsorbEnableKey;
@implementationUIButton (Drag)
-(void)setDragEnable:(BOOL)dragEnable{
objc_setAssociatedObject(self, DragEnableKey,@(dragEnable), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
-(BOOL)isDragEnable{
return [objc_getAssociatedObject(self, DragEnableKey) boolValue];
}
-(void)setAdsorbEnable:(BOOL)adsorbEnable{
objc_setAssociatedObject(self, AdsorbEnableKey,@(adsorbEnable), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
-(BOOL)isAdsorbEnable{
return [objc_getAssociatedObject(self, AdsorbEnableKey) boolValue];
}
CGPointbeginPoint;
- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event{
self.highlighted = YES;
if (![objc_getAssociatedObject(self, DragEnableKey) boolValue]) {
return;
}
UITouch*touch = [touchesanyObject];
beginPoint = [touch locationInView:self];
}
- (void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event{
self.highlighted = NO;
if (![objc_getAssociatedObject(self, DragEnableKey) boolValue]) {
return;
}
UITouch*touch = [touchesanyObject];
CGPointnowPoint = [touchlocationInView:self];
floatoffsetX = nowPoint.x-beginPoint.x;
floatoffsetY = nowPoint.y-beginPoint.y;
if(fabsf(offsetX) >0.3||fabsf(offsetY) >0.3) {//解决点击和拖动冲突的问题
self.highlighted = NO;
}else{
self.highlighted = YES;
}
self.center = CGPointMake(self.center.x + offsetX, self.center.y + offsetY);
}
-(void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event{
if (self.tag == 55551 || self.tag == 55552 || self.tag == 55553 || self.tag == 55554) {
if (self.highlighted) {
[self sendActionsForControlEvents:UIControlEventTouchUpInside];
self.highlighted = NO;
}
}else{
[self sendActionsForControlEvents:UIControlEventTouchUpInside];
self.highlighted = NO;
}
if (self.superview && [objc_getAssociatedObject(self,AdsorbEnableKey) boolValue] ) {
floatmarginLeft =self.frame.origin.x;
float marginRight = self.superview.frame.size.width - self.frame.origin.x - self.frame.size.width;
floatmarginTop =self.frame.origin.y;
float marginBottom = self.superview.frame.size.height - self.frame.origin.y - self.frame.size.height - BOTTOMPADDING;
[UIView animateWithDuration:0.125 animations:^(void){
if(marginTop
self.frame = CGRectMake(marginLeft<marginRight?marginLeft<PADDING?PADDING:self.frame.origin.x:marginRight<PADDING?self.superview.frame.size.width -self.frame.size.width-PADDING:self.frame.origin.x,
PADDING,
self.frame.size.width,
self.frame.size.height);
}
elseif(marginBottom
self.frame = CGRectMake(marginLeft<marginRight?marginLeft<PADDING?PADDING:self.frame.origin.x:marginRight<PADDING?self.superview.frame.size.width -self.frame.size.width-PADDING:self.frame.origin.x,
self.superview.frame.size.height - self.frame.size.height-BOTTOMPADDING,
self.frame.size.width,
self.frame.size.height);
}
else{
self.frame = CGRectMake(marginLeft<marginRight?PADDING:self.superview.frame.size.width - self.frame.size.width-PADDING,
self.frame.origin.y,
self.frame.size.width,
self.frame.size.height);
}
}];
}
}
@end
将该类别从工程中移除问题解决
总结：
runtime的使用要慎重，尤其是分类中使用runtime。可能会导致iOS系统bug。并且此类问题很难定位。
