当我调用 drawAtPoint 时,我偶尔会得到一个 exc_bad_access。奇怪的是它并不总是发生,通常在多次调用此方法之后。可能是什么问题?
- (UIImage *)createImage {
NSString *testString = @"Test";
UIFont *font = [UIFont boldSystemFontOfSize:[UIFont labelFontSize]];
CGSize size = CGSizeMake(256, 256);
UIGraphicsBeginImageContextWithOptions(size, NO, 0.0);
[testString drawAtPoint:CGPointMake(0.0, 0.0) withFont:font];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}