前言
iOS 更新了11.0以及iPhone X发布之后，各种蛋疼的适配让人无所适从，在此记录一下 适配当中遇到的坑以及解决方法。
准备
// 判断是否是iPhone X
#define kDevice_Is_iPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
// 宏定义 获取当前的 状态栏的高度 和导航栏的高度
#define NAVBAR_HEIGHT ([[UIApplication sharedApplication] statusBarFrame].size.height + self.navigationController.navigationBar.frame.size.height)
// tabbar 高度
#define TABBAR_HEIGHT (kDevice_Is_iPhoneX? 83.:49.)
1. tabview 适配
实现思路，通过runtime修改初始化方法。
新建UITableView分类： UITableView+Category.h
1. 新增runtime交换函数实现方法
+ (void)exChangeInit{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
SEL originalSelector = @selector(initWithFrame:style:);
SEL swizzledSelector = @selector(dj_initWithFrame:style:);
Class class = [self class];
Method originalMethod = class_getInstanceMethod(class, originalSelector);
Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
BOOL didAddMethod =
class_addMethod(class,
originalSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod));
if (didAddMethod) {
class_replaceMethod(class,
swizzledSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
} else {
method_exchangeImplementations(originalMethod, swizzledMethod);
}
});
}
2. 重写load方法：
+ (void)load{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
[UITableView appearance].estimatedRowHeight = 0;
[UITableView appearance].estimatedSectionHeaderHeight = 0;
[UITableView appearance].estimatedSectionFooterHeight = 0;
//iOS11 解决SafeArea的问题，同时能解决pop时上级页面scrollView抖动的问题
[UITableView exChangeInit];
});
if (@available(iOS 11, *)) {
// [UIScrollView appearance].contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever; //iOS11 解决SafeArea的问题，同时能解决pop时上级页面scrollView抖动的问题
}
}
3. 重写init方法
- (UITableView *)dj_initWithFrame:(CGRect)frame{
return [[UITableView alloc]dj_initWithFrame:frame style:UITableViewStylePlain];
}
- (UITableView *)dj_initWithFrame:(CGRect)frame style:(UITableViewStyle)style{
CGFloat height = frame.size.height;
NSLog(@"tableView frame:%@ ",NSStringFromCGRect(frame));
UITableView *tableView = [self dj_initWithFrame:frame style:(int)style];
if(tableView){
if (@available(iOS 11.0, *)) {
NSLog(@"new init ios 11");
tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
if(kDevice_Is_iPhoneX){
tableView.frame = CGRectMake(frame.origin.x, frame.origin.y, frame.size.width, frame.size.height - 44);
}
}
}
return self;
}
搞定.
