iOS开发3DTouch导致Crush

原因推测

最近公司项目加入 3D touch 功能上线后, 有用户反映他们的机器在点击程序 icon 的时候就直接闪退了, 找了个问题机测试了一下发现是 3D touch 导致的崩溃. 正规渠道购买的机器都没有闪退问题, 某些港版, 日版, 美版机器会出问题, 所以推测是那些机器在购买之前经过越狱或是什么原因, 修改了底层 3D touch 某些属性, 导致本不支持 3D touch 的问题机误以为自己支持该功能导致崩溃.

只是推测, 老鸟欢迎指正

初步方案

shortCutItem

由于没有那么多问题机测试, 只有两台, 只能算一个参考方案吧, 反正这两台机器是没问题了.
方案: 限制机型, 只允许 6S 和 9.0以上系统走 3D Touch 方法.
代码:
在AppDelegate.m中
首先导入头文件#import "sys/utsname.h"
pch 文件中定义系统版本号#define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]

// 获取机型设备号
struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    
    // 如果系统版本大于9.0
    if (IOS_VERSION >= 9.0) {
        
        // 如果设备号是 6S 或者 6S PLUS
        if ([deviceString isEqualToString:@"iPhone8,1"] || [deviceString isEqualToString:@"iPhone8,2"]) {
            
            // 创建 shortCutItem 的方法
            [self createItemsWithIcons];
            
            if (launchOptions[@"UIApplicationLaunchOptionsShortcutItemKey"] == nil) {
                return YES;
            } else {
                return NO;
            }
        }
    }

至此, 打开就闪退的问题在这两台机器上解决了

Preview

在支持 3d touch的视图控制器.m文件中同样导入#import "sys/utsname.h"
在设置traitCollection的方法中同样用上面的判断

- (void)viewWillAppear:(BOOL)animated {
    
    [super viewWillAppear:animated];
    
    // 获取设备型号
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    
    // 判断系统型号
    if (IOS_VERSION >= 9.0) {
        
        if ([deviceString isEqualToString:@"iPhone8,1"] || [deviceString isEqualToString:@"iPhone8,2"]) {
            
            if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
                
                [self registerForPreviewingWithDelegate:self sourceView:self.levelCollectionView];
            }
        }
    }
}

如果要预览的 webView 打开了allowsLinkPreview
同样需要重复导入上面的头文件

struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    if ([deviceString isEqualToString:@"iPhone8,1"] || [deviceString isEqualToString:@"iPhone8,2"]) {
        self.webView.allowsLinkPreview = YES;
    }

至此, 这两台问题机器的 3D Touch 崩溃问题解决

设备型号(不完全版)

- (NSString*)deviceVersion {

    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    
    NSLog(@"%@",deviceString);
    
    if ([deviceString isEqualToString:@"iPhone1,1"])    return @"iPhone 1G";
    if ([deviceString isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";
    if ([deviceString isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS";
    if ([deviceString isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,2"])    return @"Verizon iPhone 4";
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone6,2"])    return @"iPhone 5S";
    if ([deviceString isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([deviceString isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([deviceString isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
    if ([deviceString isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
    if ([deviceString isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([deviceString isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([deviceString isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([deviceString isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([deviceString isEqualToString:@"iPad1,1"])      return @"iPad";
    if ([deviceString isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,2"])      return @"iPad 2 (GSM)";
    if ([deviceString isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
    if ([deviceString isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
    if ([deviceString isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceString isEqualToString:@"x86_64"])       return @"Simulator";
    
    return deviceString;
}

iPhone 7,2是6, 7,1是6Plus

这个方案还不是很确定, 如果我说的有问题, 欢迎来纠错, 谢谢
补充一下, 不管上一页有没有设置preView, 只要下一页的webView打开了allowsLinkPreview属性, 也会导致问题机型的崩溃

iOS开发3DTouch导致Crush