ios 11和iphone x的相关适配问题及解决方法

有关iOS11 ,最大的变化就是增加了一个安全区域（safeArea）的概念，iOS11 适配的大部分问题都是由于它引起的。

在ios 11中，tableView会莫名偏移，解决办法：

//解决iOS11 tableview会出现漂移,预估高度都设为0
 self.tableView.estimatedRowHeight = 0;
 self.tableView.estimatedSectionHeaderHeight = 0;
 self.tableView.estimatedSectionFooterHeight = 0; 

解决scrollView，默认位移了，解决办法：

-(void)setScrollViewContentInsetAdjustmentBehavior:(UIScrollView *)scrollView {
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000
 if(@available(iOS 11.0, *)) {
  if ([scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
   scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
  }
 }
#endif
} 

关于iphone x适配，封装了一个类：代码如下：

ScreenTool.h

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#define ViewSafeAreaInsets(view) [ScreenToolSharedInstance getViewSafeAreaInsets:view]
#define WindowSafeAreaInsets [ScreenToolSharedInstance getWindowSafeAreaInsets]
#define Screen_height [[UIScreen mainScreen] bounds].size.height
#define Screen_width [[UIScreen mainScreen] bounds].size.width
#define ScreenToolSharedInstance [ScreenTool sharedInstance]
#define NavAndStatusBarHeight [ScreenToolSharedInstance getNavAndStatusBarHeight]
#define TabBarAndVirtualHomeHeight [ScreenToolSharedInstance getTabBarAndVirtualHomeHeight]
#define StatusBarHeight [ScreenToolSharedInstance getStatusBarHeight]
#define NavContentHeight [ScreenToolSharedInstance getNavContentHeight]
#define TabBarContentHeight [ScreenToolSharedInstance getTabBarContentHeight]
#define ScrollViewContentInsetAdjustmentBehavior(scrollView) [ScreenToolSharedInstance setScrollViewContentInsetAdjustmentBehavior:scrollView]
typedef NS_ENUM(NSUInteger, DeviceScreenType) {//设备屏幕类型
 DeviceTypeIphone4Screen,
 DeviceTypeIphone5Screen,
 DeviceTypeIphone6Screen,
 DeviceTypeIphone6PlusScreen,
 DeviceTypeIphoneXScreen,
 DeviceTypeOtherScreen
};
typedef NS_ENUM(NSUInteger, DeviceOrientationType) {//屏幕方向类型
 DeviceOrientationTypeHorizontalScreen,
 DeviceOrientationTypeVerticalScreen,
 DeviceOrientationTypeOther
};
@interface ScreenTool : NSObject
@property(nonatomic,unsafe_unretained)BOOL isAccordingToSafeArea;
-(void)setScrollViewContentInsetAdjustmentBehavior:(UIScrollView *)scrollView;
+(ScreenTool *)sharedInstance;
+(BOOL)isSmallScreen;
-(UIEdgeInsets)getWindowSafeAreaInsets;
-(UIEdgeInsets)getViewSafeAreaInsets:(UIView *)view;
-(NSString *)getDevice;
-(DeviceScreenType)getDeviceType;
-(DeviceOrientationType)getDeviceOrientationType;
-(CGFloat)getNavAndStatusBarHeight;
-(CGFloat)getTabBarAndVirtualHomeHeight;
-(CGFloat)getTabBarContentHeight;
-(CGFloat)getNavContentHeight;
-(CGFloat)getStatusBarHeight;
@end
ScreenTool.m
[objc] view plain copy
#import "ScreenTool.h"
@implementation ScreenTool
-(instancetype)init{
 if (self = [super init]) {
  self.isAccordingToSafeArea = YES;
 }
 return self;
}
+(ScreenTool *)sharedInstance {
 static dispatch_once_t pred = 0;
 __strong static id screenTool = nil;
 dispatch_once(&pred, ^{
  screenTool = [[self alloc] init];
 });
 return screenTool;
}
-(void)setScrollViewContentInsetAdjustmentBehavior:(UIScrollView *)scrollView {
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000
 if(@available(iOS 11.0, *)) {
  if ([scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
   scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
  }
 }
#endif
}
-(UIEdgeInsets)getWindowSafeAreaInsets {
 UIEdgeInsets i = UIEdgeInsetsZero;
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000
 if(@available(iOS 11.0, *)) {
  i = [UIApplication sharedApplication].keyWindow.safeAreaInsets;
 }
#endif
 return i;
}
-(UIEdgeInsets)getViewSafeAreaInsets:(UIView *)view {
 UIEdgeInsets i = UIEdgeInsetsZero;
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000
 if(@available(iOS 11.0, *)) {
  i = view.safeAreaInsets;
 }
#endif
 return i;
}
-(NSString *)getDevice {
 if ((Screen_width == 320 && Screen_height == 480) || (Screen_height == 320 && Screen_width == 480)) {
  return @"4";
 }else if ((Screen_width == 320 && Screen_height == 568) || (Screen_height == 320 && Screen_width == 568)) {
  return @"5";
 }else if ((Screen_width == 375 && Screen_height == 667) || (Screen_height == 375 && Screen_width == 667)) {
  return @"6";
 }else if ((Screen_width == 375 && Screen_height == 812) || (Screen_height == 375 && Screen_width == 812)) {
  return @"x";
 }else if ((Screen_width == 414 && Screen_height == 736) || (Screen_height == 414 && Screen_width == 736)) {
  return @"6p";
 }else {
  return @"";
 }
}
-(DeviceScreenType)getDeviceType {
 if ((Screen_width == 320 && Screen_height == 480) || (Screen_height == 320 && Screen_width == 480)) {
  return DeviceTypeIphone4Screen;
 }else if ((Screen_width == 320 && Screen_height == 568) || (Screen_height == 320 && Screen_width == 568)) {
  return DeviceTypeIphone5Screen;
 }else if ((Screen_width == 375 && Screen_height == 667) || (Screen_height == 375 && Screen_width == 667)) {
  return DeviceTypeIphone6Screen;
 }else if ((Screen_width == 375 && Screen_height == 812) || (Screen_height == 375 && Screen_width == 812)) {
  return DeviceTypeIphoneXScreen;
 }else if ((Screen_width == 414 && Screen_height == 736) || (Screen_height == 414 && Screen_width == 736)) {
  return DeviceTypeIphone6PlusScreen;
 }else {
  return DeviceTypeOtherScreen;
 }
}
-(DeviceOrientationType)getDeviceOrientationType {
 if ([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait || [[UIDevice currentDevice] orientation] == UIDeviceOrientationPortraitUpsideDown) {
  return DeviceOrientationTypeVerticalScreen;
 } else if ([[UIDevice currentDevice] orientation] == UIDeviceOrientationLandscapeLeft || [[UIDevice currentDevice] orientation] == UIDeviceOrientationLandscapeRight) {
  return DeviceOrientationTypeHorizontalScreen;
 }else {
  return DeviceOrientationTypeOther;
 }
}
+(BOOL)isSmallScreen{
 if (Screen_width >=375 && Screen_height >= 667) {
  return NO;
 }else {
  return YES;
 }
}
-(CGFloat)getTabBarContentHeight {
 if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, WindowSafeAreaInsets)) {
  //if ([self getDeviceType] == DeviceTypeIphoneXScreen) {
  if ([self getDeviceOrientationType] == DeviceOrientationTypeHorizontalScreen) {
   if (self.isAccordingToSafeArea) {
    return 32;
   }else {
    return 49;
   }
  }else {
   return 49;
  }
 }else {
  return 49;
 }
}
-(CGFloat)getNavContentHeight {
 if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, WindowSafeAreaInsets)) {
  // }
  // if ([self getDeviceType] == DeviceTypeIphoneXScreen) {
  if ([self getDeviceOrientationType] == DeviceOrientationTypeHorizontalScreen) {
   if (self.isAccordingToSafeArea) {
    return 32;
   }else {
    return 44;
   }
  }else {
   return 44;
  }
 }else {
  return 44;
 }
}
-(CGFloat)getStatusBarHeight {
 return [[UIApplication sharedApplication] statusBarFrame].size.height;
}
-(CGFloat)getNavAndStatusBarHeight {
 return [self getNavContentHeight]+[self getStatusBarHeight];
}
-(CGFloat)getTabBarAndVirtualHomeHeight {
 return [self getTabBarContentHeight]+WindowSafeAreaInsets.bottom;
}
@end 

总结

以上所述是小编给大家介绍的ios 11和iphone x的相关适配问题及解决方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！