2014-09-25 86 views
9

我試圖生成圖形並逐個截取屏幕截圖。該應用程序一次正常工作,然後當我第二次嘗試再次捕獲屏幕截圖時,應用程序崩潰,說應用程序由於內存錯誤而終止。這隻發生在iOS8而不發生在iOS7中。這裏捕捉屏幕截圖的代碼,在線崩潰 - [view.layer renderInContext:context]; 應用程序在高峯使用時使用124 MB,並且在崩潰之前沒有生成內存警告。即使沒有其他應用程序在後臺運行,應用程序也會在iOS 8上崩潰。如果我註釋掉上面的行,應用程序根本不會崩潰,但截取的截圖不是完整的屏幕。由於內存錯誤,iOS8上的應用程序崩潰

- (BOOL)captureView:(UIView *)view forGraph:(NSString *)graphName 
{ 

BOOL isImageCpatured = NO; 

@try { 
    CGRect rect = view.bounds; 
    UIGraphicsBeginImageContext(rect.size); 
    CGContextRef context = UIGraphicsGetCurrentContext(); 
    [view.layer renderInContext:context]; 
    UIImage *img = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    CGImageRef imageRef; 

    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")) { 
     imageRef = CGImageCreateWithImageInRect([img CGImage], CGRectMake(0, 113, 1024, 532)); 
    } 
    else { 
     imageRef = CGImageCreateWithImageInRect([img CGImage], CGRectMake(0, 93, 1024, 532)); 
    } 

    img = nil; 

    UIImage *image = [UIImage imageWithCGImage:imageRef]; 
    CGImageRelease(imageRef);   
    NSData *pngData = UIImagePNGRepresentation(image); 

    [pngData writeToFile:[Utility_Class documentsPathForFileName:[NSString stringWithFormat:@"%@BG.png",graphName]] atomically:YES]; 

    pngData = nil; 

    image = nil; 

    isImageCpatured = YES; 

} 
@catch (NSException *exception) { 
    return isImageCpatured; 
} 
@finally { 

} 

return isImageCpatured; 
} 

什麼可能是錯的?我無法找到任何解決方案。我發現內存壓力與內存錯誤不同。但沒有解決方法如何解決它。即使captureView函數在@autorelease池中被調用。

這是在iOS8上生成的未知崩潰日誌。它從不崩潰的iOS7。

Incident Identifier: 24F29058-7D47-40B6-87B4-2183220DB55B 
CrashReporter Key: 6079e634bf7aeebb0e4d9ea95336cb33b0fc49dd 
Hardware Model:  iPad4,1 
OS Version:   iPhone OS 8.0 (12A365) 
Kernel Version:  Darwin Kernel Version 14.0.0: Tue Aug 19 15:09:47 PDT 2014; root:xnu-2783.1.72~8/RELEASE_ARM64_S5L8960X 
Date:    2014-09-25 18:21:25 +0530 
Time since snapshot: 88 ms 
Free pages:        2219 
Active pages:       96945 
Inactive pages:       48102 
Speculative pages:      314 
Throttled pages:       0 
Purgeable pages:       2 
Wired pages:        77304 
File-backed pages:      40758 
Anonymous pages:       104603 
Compressions:       1467794 
Decompressions:       158957 
Compressor Size:       24980 
Uncompressed Pages in Compressor:  119797 
Page Size:        16384 
Largest process: my application Name 
+0

>請您提供崩潰日誌? – 2014-09-25 13:13:40

+0

添加了崩潰日誌。 – 2014-09-26 05:11:14

+0

我也有一個應用程序崩潰,看起來隨機,在iOS 8但不是iOS 7. V奇怪... – mm2001 2014-09-26 05:20:45

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