将此代码与小图像一起使用时效果很好。对于大图像（6937x4630），我可以使用滑块一次（需要4-6秒才能应用滤镜，使用100MB内存）。 如果我再次尝试移动滑块（非连续），应用程序崩溃时没有出现错误消息，并将设备记录保留在下面。
如何确定应用崩溃的原因和位置？ 我有什么提示可能在这里做错了吗？
设备：iPhone5S，iPhone6plus iOS8，iOS8.1 xCode 6.1GM
//
// ViewController.m
//
#import "ViewController.h"
@interface ViewController ()
@property (nonatomic) UIImagePickerController *imagePickerController;
@property (nonatomic) UIImage *image;
@property (weak, nonatomic) IBOutlet UISlider *sliderRadius;
@property (nonatomic) CIContext *context;
@property (nonatomic) CIImage *ciImage;
@property (nonatomic) CIImage *result;
@property (nonatomic) CIFilter *filter;
@property (nonatomic) CGImageRef cgImage;
@property (nonatomic) CGRect *extent;
@end
@implementation ViewController
- (void)viewDidLoad {
self.context = [CIContext contextWithOptions:nil];
self.filter = [CIFilter filterWithName:@"CISepiaTone"];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)openButton:(id)sender {
if (self.imageView.isAnimating)
{
[self.imageView stopAnimating];
}
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePickerController.delegate = self;
self.imagePickerController = imagePickerController;
[self presentViewController:self.imagePickerController animated:YES completion:nil];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
//Original Image
self.image = [info valueForKey:UIImagePickerControllerOriginalImage];
//Update der imageView
[self.imageView setImage:self.image];
self.ciImage = [CIImage imageWithCGImage:self.image.CGImage];
//Image Picker dismis
[self dismissViewControllerAnimated:YES completion:NULL];
//Filter Input Image setzen
[self.filter setValue:self.ciImage forKey:kCIInputImageKey];
self.imagePickerController = nil;
}
- (IBAction)filterAction:(UISlider *)slider {
[self.filter setValue:[NSNumber numberWithFloat:self.sliderRadius.value] forKey:kCIInputIntensityKey];
self.result = [self.filter outputImage];
self.cgImage = [self.context createCGImage:self.result fromRect:[self.result extent]];
[self.imageView setImage:[UIImage imageWithCGImage:self.cgImage]];
//CFRelease(cgImage);
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissViewControllerAnimated:YES completion:NULL];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
NSLog(@"Memory");
}
@end
Incident Identifier: 72D4B88A-0F6C-4F55-AD75-D00104982F45
CrashReporter Key: b538bd13ec68a6bf50379d388fde920bbbb30d6c
Hardware Model: iPhone7,1
OS Version: iPhone OS 8.1 (12B407)
Kernel Version: Darwin Kernel Version 14.0.0: Fri Oct 3 21:56:57 PDT 2014; root:xnu-2783.3.13~2/RELEASE_ARM64_T7000
Date: 2014-10-11 21:31:36 +0200
Time since snapshot: 60 ms
Free pages: 751
Active pages: 66094
Inactive pages: 32529
Speculative pages: 632
Throttled pages: 0
Purgeable pages: 0
Wired pages: 80872
File-backed pages: 12346
Anonymous pages: 86909
Compressions: 18658086
Decompressions: 8858437
Compressor Size: 57617
Uncompressed Pages in Compressor: 116482
Page Size: 16384
Largest process: backboardd
Processes
Name | <UUID> | CPU Time| rpages| purgeable| recent_max| lifetime_max| fds | [reason] | (state)
seld <e0ef06552fcd329798c7d48e18ae7084> 0.049 220 0 - 699 50 [vm-pageshortage] (daemon)
nsurlsessiond <d4d92aa5748c3b228aa6c71bf229541e> 26.290 1029 0 - 2006 50 [vm-pageshortage] (daemon)
nfcd <5a064f82c8e93ffabc6d06ac2611a98c> 0.067 222 0 - 623 50 [vm-pageshortage] (daemon)
debugserver <f00a5e2ac8f73e7e893c711d88c344a6> 0.019 145 0 - 409 50 [vm-pageshortage] (daemon)
biometrickitd <16a81b5b73e935c69a2301bb2505cdce> 0.092 271 0 - 775 50 [vm-pageshortage] (daemon)
debugserver <f00a5e2ac8f73e7e893c711d88c344a6> 0.508 210 0 - 629 50 [vm-pageshortage] (daemon)
WirelessRadioMan <e2db6c768b033dd688e0507506a519bc> 0.038 87 0 - 256 50 [vm-pageshortage] (daemon) (idle)
MobileMail <9ab0e94c812a35b48bfb9247ad5bc666> 1.181 2143 0 - 4751 50 [vm-pageshortage] (resume) (continuous)
*** <b94e665fc2e33c4b9f97511aaedf3626> 1.347 388 0 - 1189 50 [vm-pageshortage] (daemon)
tccd <09c47a77799f311e9760bdf727854390> 3.942 241 0 - 617 50 [vm-pageshortage] (daemon)
kbd <aa1af3645acd3f19a51cf8f0f61a17e4> 0.115 398 0 - 1894 50 [vm-pageshortage] (daemon)
Vignette <69076a7a96ed39e48aaa6383dd3ee66b> 3.015 97829 0 - 50557 50 [vm-pageshortage] (frontmost) (resume)
ptpd <7bbf9eda115c34f8b6f7dee2581e6c04> 0.777 998 0 - 2149 50 (daemon)
BTServer <0cce9d9f54343782b0cae26baed8004f> 122.069 990 0 - 1912 50 (daemon)
CVMCompiler <31967d90745a3fad88c894bf7c6bc584> 0.284 1901 0 - 2258 50 (daemon)
wifid <24888d24c6c23baea9f8596de5d8ded7> 129.627 756 0 - 1498 50 (daemon)
locationd <b730587126dd36e49417d0098717a911> 1354.758 4608 0 - 5111 50 (daemon)
lockdownd <5b49b7623bc53e7d806168d6c5427762> 21.407 438 0 - 981 50 (daemon)
imagent <0700045eaa803925987221760d8799ac> 138.954 1079 0 - 3195 50 (daemon)
identityservices <579d18471dec3fd890be600ff343beef> 146.703 962 0 - 2196 50 (daemon)
iaptransportd <5c41df46b8de3535832ab9c2a48721db> 19.302 399 0 - 912 50 (daemon)
syslogd <05f6b5e5512938a892bac5af23ab1c08> 104.513 607 0 - 2673 50 (daemon)
powerd <854edfcea1eb331dbc2820ed8635ed91> 91.818 519 0 - 618 50 (daemon)
apsd <130455ed9f8e321dadcc21d9f715f0f3> 120.401 1010 0 - 1935 100 (daemon)
networkd <d384e27e5c6430bc83553e12172b4f32> 1850.619 1105 0 - 1689 50 (daemon)
vmd <d16b604704613bcabf5632c2d7ae74fe> 117.316 959 0 - 2804 50 (daemon)
dataaccessd <9697275f4cf83af3831861af286b477d> 193.752 2251 0 - 4272 100 (daemon)
sharingd <de5ec767f8fe38cb9e7221169c06fba9> 71.475 1623 0 - 12426 50 (daemon)
mediaserverd <4809d883646e360eb8dd8a84d4bc9806> 259.061 2970 0 - 14068 50 (daemon)
discoveryd <95c25671ae3c32ee8622591fd5d19761> 119.338 1715 0 - 1811 200 (daemon)
itunesstored <1644e3379165344589356a76a05b0b5d> 40.487 2778 0 - 4341 50 (daemon)
misd <fb121907dae739b3a24be61ef1752687> 0.178 193 0 - 582 50 (daemon)
syslog_relay <840c2bf07e5f3eb8b3365725868d032d> 1.399 114 0 - 236 50 (daemon)
voiced <0d309908425238479742073db2d27d7d> 0.065 292 0 - 862 50 (daemon)
assistantd <0219a0f42fc3370d9517675fbe60fa9d> 0.323 966 0 - 3096 50 (daemon)
SpringBoard <a0e9597e6bc43ee28bd8065b603b4331> 10.202 9002 0 - 37674 50
backboardd <11829fb1a5ff39bb9fef92e5783c1c9f> 11.444 108040 0 - 74544 50 (daemon)
UserEventAgent <f05146f69d6c3541bfa548c56776ef5c> 577.460 1518 0 - 2912 200 (daemon)
fseventsd <391c1f7a879b369196a28e62271f1c78> 56.403 757 0 - 762 50 (daemon)
configd <601e4d08d81c300c9ee3f57d638d666a> 103.778 615 0 - 1120 50 (daemon)
fairplayd.H2 <cae337642f6d396b82ac54e72bc0e0a4> 31.603 270 0 - 1555 50 (daemon)
distnoted <473ac03b0d4834518e54b826db35f79b> 99.114 503 0 - 440 50 (daemon)
wirelessproxd <8f301e7f78c63856aaec9529ef246ccf> 27.316 293 0 - 1007 50 (daemon)
filecoordination <29dc66b208e43e89a6fb6c88b8aad6e6> 5.617 478 0 - 987 100 (daemon)
discoveryd_helpe <7b0af17b203838bd9a48ed7430b3c576> 0.107 155 0 - 752 50 (daemon)
DTPower <b82e79ddecb8373a9fb08e0b7b5befa1> 0.112 280 0 - 827 50 (daemon)
assertiond <b1d9ebb401d43e4598dce9eada251445> 13.057 375 0 - 776 50 (daemon)
aggregated <ff9b9ccc22fc3f5ba6d69ec4539569a1> 377.191 1886 0 - 2183 50 (daemon)
DTMobileIS <2fdc94aa5069338e815fbe3a13e3d95c> 100.766 2090 0 - 20786 50 (daemon)
callservicesd <53b377fe33f3310d8af76a5f8ec05fe1> 0.212 590 0 - 1780 50 (daemon)
touchsetupd <6d8af03089e93d99b824ef2bcf15f06e> 1.053 197 0 - 682 50 (daemon)
cfprefsd <9006298e365a3a03b8403196ba98d29b> 0.416 295 0 - 586 50 (daemon)
CommCenter <af67e6c7fea03ccea0591411851e302b> 88.580 1910 0 - 5400 50 (daemon)
notifyd <5fa8fd5e44c83f64be1475b882b16c82> 159.142 473 0 - 436 50 (daemon)
ReportCrash <b0b4cd3f17083b0ebf75c0ad5679fba9> 0.060 177 0 - 614 50 (daemon)
**End**