最近工程里捕捉到創建二維碼時偶爾會閃退，最后發現跟EAGLContext相關，問題已經處理了，清空EAGLContext，重新設置EAGLContext，有遇到相關問題的網友可評論，我回頭貼上處理方案的代碼

關鍵地方是[EAGLContext setCurrentContext:nil];

- (UIImage*)resizeCodeImage:(CIImage*)imagewithSize:(CGSize)size {

? ? EAGLContext *curContext = [EAGLContext currentContext];

? ? if(curContext) {

? ? ? ? [EAGLContext setCurrentContext:nil];

? ? }

? ? CGRect extent = CGRectIntegral(image.extent);

? ? CGFloatscaleWidth = size.width/CGRectGetWidth(extent);

? ? CGFloatscaleHeight = size.height/CGRectGetHeight(extent);

? ? size_twidth =CGRectGetWidth(extent) * scaleWidth;

? ? size_theight =CGRectGetHeight(extent) * scaleHeight;

? ? CGColorSpaceRef colorSpaceRef = CGColorSpaceCreateDeviceGray();

? ? CGContextRef contentRef = CGBitmapContextCreate(nil, width, height, 8, 0, colorSpaceRef, (CGBitmapInfo)kCGImageAlphaNone);

? ? CGColorSpaceRelease(colorSpaceRef);

? ? CIContext *context = [CIContext contextWithOptions:nil];

? ? CGImageRefimageRef = [contextcreateCGImage:imagefromRect:extent];

? ? CGContextSetInterpolationQuality(contentRef, kCGInterpolationNone);

? ? CGContextScaleCTM(contentRef, scaleWidth, scaleHeight);

? ? CGContextDrawImage(contentRef, extent, imageRef);

? ? CGImageRefimageRefResized =CGBitmapContextCreateImage(contentRef);

? ? CGContextRelease(contentRef);

? ? CGImageRelease(imageRef);

? ? UIImage*img = [UIImageimageWithCGImage:imageRefResized];

? ? if(curContext) {

? ? ? ? [EAGLContext setCurrentContext:curContext];

? ? }

? ? CGImageRelease(imageRefResized);

? ? returnimg;

}