iOS應用程序在拍攝連續照片時崩潰

Question

在我的應用程序中，我通過點擊按鈕順序拍攝五張照片。但是，當我在照片拍攝中按下設備上的home按鈕時，應用程序像往常一樣進入後臺階段，但當我嘗試重新啓動時，應用程序崩潰。你能爲這個問題建議任何解決方案嗎？

在此先感謝

Answer 1

你好請參閱此三種方法，這可能解決您的內存泄漏問題，實際上墜毀是由於內存泄漏，因爲有時當我們採取更多的照片分辨率高，我們使用它是我們的應用程序那麼iphone不能處理更多的內存。

還有一件事我需要說抱歉，因爲我不知道鋤頭格式化代碼。

• （無效）imagePickerController：（的UIImagePickerController *）選擇器didFinishPickingMediaWithInfo：（的NSDictionary *）信息 { [拾取器dismissModalViewControllerAnimated：YES]; [picker release];

  [popover dismissPopoverAnimated：YES]; [popover release]; UIImage * capturedImage = [info objectForKey：@「UIImagePickerControllerOriginalImage」];}} [self performSelector：@selector（waitUntillImageCaptured :) withObject：capturedImage afterDelay：0.2]; }

  - （無效）waitUntillImageCaptured：（的UIImage *）originalImage {
  的UIImage * tempimg;

  tempimg = [self scaleAndRotateImage：originalImage];

  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSString * imagePath = [[appDelegate applicationDocumentDirectoryString] stringByAppendingPathComponent：@「ClientTempthumb.png」];};}};}}

  // UIImageView * tempView = [[UIImageView alloc] initWithImage：tempimg]; NSData * data = [NSData dataWithData：UIImagePNGRepresentation（tempimg）];

  if（data！= nil） {data writeToFile：imagePath atomically：YES]; } else {[NSFileManager defaultManager] removeItemAtPath：imagePath error：NULL]; }

  [btnPhoto setImage：tempimg forState：UIControlStateNormal]; [游泳池釋放]; // [appDelegate hideLoadingView]; }

  • （的UIImage *）scaleAndRotateImage：（的UIImage *）圖像{ INT kMaxResolution = 550; //或任何其他

  CGImageRef imgRef = image。CGImage;

  CGFloat width = CGImageGetWidth（imgRef）; CGFloat height = CGImageGetHeight（imgRef）;

  CGAffineTransform transform = CGAffineTransformIdentity; CGRect bounds = CGRectMake（0，0，width，height）; if（width> kMaxResolution || height> kMaxResolution）{CGFloat ratio = width/height;

  if (ratio > 1) 
  { 
      bounds.size.width = kMaxResolution; 
      bounds.size.height = roundf(bounds.size.width/ratio); 
  } 
  else 
  { 
      bounds.size.height = kMaxResolution; 
      bounds.size.width = roundf(bounds.size.height * ratio); 
  } 
  

  }

  CGFloat的scaleRatio = bounds.size.width /寬度; CGSizemageSize = CGSizeMake（CGImageGetWidth（imgRef），CGImageGetHeight（imgRef））; CGFloat boundHeight; UIImageOrientation orient = image.imageOrientation;

  開關（定向） {

  case UIImageOrientationUp: //EXIF = 1 
  
      // landscape right 
      transform = CGAffineTransformIdentity; 
      break; 
  
  case UIImageOrientationUpMirrored: //EXIF = 2 
      transform = CGAffineTransformMakeTranslation(imageSize.width, 0.0); 
      transform = CGAffineTransformScale(transform, -1.0, 1.0); 
      break; 
  
  case UIImageOrientationDown: //EXIF = 3 
  
      // landscape left 
      transform = CGAffineTransformMakeTranslation(imageSize.width, imageSize.height); 
      transform = CGAffineTransformRotate(transform, M_PI); 
      break; 
  
  case UIImageOrientationDownMirrored: //EXIF = 4 
      transform = CGAffineTransformMakeTranslation(0.0, imageSize.height); 
      transform = CGAffineTransformScale(transform, 1.0, -1.0); 
      break; 
  
  case UIImageOrientationLeftMirrored: //EXIF = 5 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeTranslation(imageSize.height, imageSize.width); 
      transform = CGAffineTransformScale(transform, -1.0, 1.0); 
      transform = CGAffineTransformRotate(transform, 3.0 * M_PI/2.0); 
      break; 
  
  case UIImageOrientationLeft: //EXIF = 6 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeTranslation(0.0, imageSize.width); 
      transform = CGAffineTransformRotate(transform, 3.0 * M_PI/2.0); 
      break; 
  
  case UIImageOrientationRightMirrored: //EXIF = 7 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeScale(-1.0, 1.0); 
      transform = CGAffineTransformRotate(transform, M_PI/2.0); 
      break; 
  
  case UIImageOrientationRight: //EXIF = 8 
  
      // Portrait Mode 
      boundHeight = bounds.size.height; 
      bounds.size.height = bounds.size.width; 
      bounds.size.width = boundHeight; 
      transform = CGAffineTransformMakeTranslation(imageSize.height, 0.0); 
      transform = CGAffineTransformRotate(transform, M_PI/2.0); 
      break; 
  
  default: 
      [NSException raise:NSInternalInconsistencyException format:@"Invalid image orientation"]; 
  

  }

  UIGraphicsBeginImageContext（bounds.size）;

  CGContextRef context = UIGraphicsGetCurrentContext（）; （Orient == UIImageOrientationRight || orient == UIImageOrientationLeft）{ CGContextScaleCTM（context，-scaleRatio，scaleRatio）; CGContextTranslateCTM（context，-height，0）; } else { CGContextScaleCTM（context，scaleRatio，-scaleRatio）; CGContextTranslateCTM（context，0，-height）; }

  CGContextConcatCTM（context，transform）; （UIGraphicsGetCurrentContext（），CGRectMake（0，0，width，height），imgRef）; UIImage * imageCopy = UIGraphicsGetImageFromCurrentImageContext（）; UIGraphicsEndImageContext（）;

  return imageCopy; }