iOS 17 及 Xcode 15.0 Beta7 问题记录

1、iOS 17 真机调试问题

iOS 17之后，真机调试Beta版别必须运用Beta版别的Xcode来调试，用以前仿制DeviceSupport 办法无法调试，新的Beta版别Xcode中，已经不包括 iOS 17目录。如下图：

1）下载最新的Beta 版别Xcode 15 2）运转命令defaults write com.apple.dt.Xcode DVTEnableCoreDevice enabled 此时旧版别Xcode 将会呈现一个 CoreDevice ，这时候就可以继续Debug调试了

2、Xcode 15 Beta版别运转项目报错

运转旧版别项目编译报以下过错 Showing All Messages Assertion failed: (aliasSectionNum == sectionNum && "alias and its target must be located in the same section"), function assignAliasAtomOffsetInSection, file Layout.cpp, line 3248.

处理：Build Settings -> Other Linker Flags 中增加 -ld64

3、UIGraphicsBeginImageContextWithOptions 办法崩溃（Crash）

*** Assertion failure in void _UIGraphicsBeginImageContextWithOptions(CGSize, BOOL, CGFloat, BOOL)(), UIGraphics.m:410

UIGraphicsBeginImageContextWithOptions(self.bounds.size, self.opaque, self.contentsScale);
        CGContextRef context = UIGraphicsGetCurrentContext();
        if (self.opaque) {
            CGSize size = self.bounds.size;
            size.width *= self.contentsScale;
            size.height *= self.contentsScale;
            CGContextSaveGState(context); {
                if (!self.backgroundColor || CGColorGetAlpha(self.backgroundColor) < 1) {
                    CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor);
                    CGContextAddRect(context, CGRectMake(0, 0, size.width, size.height));
                    CGContextFillPath(context);
                }
                if (self.backgroundColor) {
                    CGContextSetFillColorWithColor(context, self.backgroundColor);
                    CGContextAddRect(context, CGRectMake(0, 0, size.width, size.height));
                    CGContextFillPath(context);
                }
            } CGContextRestoreGState(context);
        }
        task.display(context, self.bounds.size, {return NO;});
        UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();
        self.contents = (__bridge id)(image.CGImage);

替换为：

UIGraphicsImageRendererFormat *format = [[UIGraphicsImageRendererFormat alloc] init];
        format.opaque = self.opaque;
        format.scale = self.contentsScale;
        UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:self.bounds.size format:format];
        UIImage *image = [renderer imageWithActions:(UIGraphicsImageRendererContext * _Nonnull rendererContext) {
            CGContextRef context = rendererContext.CGContext;
            if (self.opaque) {
                CGSize size = self.bounds.size;
                size.width *= self.contentsScale;
                size.height *= self.contentsScale;
                CGContextSaveGState(context); {
                    if (!self.backgroundColor || CGColorGetAlpha(self.backgroundColor) < 1) {
                        CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor);
                        CGContextAddRect(context, CGRectMake(0, 0, size.width, size.height));
                        CGContextFillPath(context);
                    }
                    if (self.backgroundColor) {
                        CGContextSetFillColorWithColor(context, self.backgroundColor);
                        CGContextAddRect(context, CGRectMake(0, 0, size.width, size.height));
                        CGContextFillPath(context);
                    }
                } CGContextRestoreGState(context);
            }
            task.display(context, self.bounds.size, {return NO;});
        }];
        self.contents = (__bridge id)(image.CGImage);