ios - Memory leak in UIWebview when loading data content with url (WebCore::CachedResource::unregisterHandle) -


i have problem uiwebview. when loading data content url, application has crashed. occurs time in month. tired it, couldn't reappear it. occurs on client's device. please me. application run on ios7.1

  1. exception type: exc_bad_access (sigsegv)
  2. exception subtype: kern_invalid_address"
  3. thread 2 name: webthread
  4. thread 2 crashed: 0 webcore 0x38322b02 webcore::cachedresource::unregisterhandle(webcore::cachedresourcehandlebase*) + 110 1 webcore 0x38322a8a webcore::cachedresourcehandlebase::~cachedresourcehandlebase() + 14 2 webcore 0x384b77fe webcore::memorycache::prunedeadresourcestosize(unsigned int) + 278 3 webcore 0x38396aee webcore::memorycache::prune() + 94"

the following our source code.

if ([defaults boolforkey:@"cacheenabled"]) {     [[nsurlcache sharedurlcache] setmemorycapacity:[defaults integerforkey:@"cachesize"]]; } else {     [[nsurlcache sharedurlcache] removeallcachedresponses];     [[nsurlcache sharedurlcache] setmemorycapacity:0]; }  nsurl *url = [nsurl urlwithstring:[defaults objectforkey:@"connectionurl"]]; nsurlrequest *request = [nsurlrequest requestwithurl:url]; nsoperationqueue *queue = [[nsoperationqueue alloc] init]; [nsurlconnection sendasynchronousrequest:request queue:queue completionhandler:^(nsurlresponse *response, nsdata *data, nserror *error)  {      if ([data length] > 0 && error == nil) [self.webview loadrequest:request];      else if (error != nil) nslog(@"error: %@", error);  }];

in dealloc method :

[_webview setdelegate:nil]; [_webview stoploading];

thanks advanced !

i think main issue loading request webview not in main thread.

nsoperationqueue *queue = [[nsoperationqueue alloc] init]; [nsurlconnection sendasynchronousrequest:request queue:queue completionhandler:^(nsurlresponse *response, nsdata *data, nserror *error)  {      if ([data length] > 0 && error == nil) [self.webview loadrequest:request];      else if (error != nil) nslog(@"error: %@", error);  }];

1/ should change param queue [nsoperationqueue mainqueue]

2/ other bugs ( not relate crash): should check response.statuscode == 200 before load webview :d


-

Comments

Post a Comment

Popular posts from this blog

OpenCV OpenCL: Convert Mat to Bitmap in JNI Layer for Android -

there several posts converting mat bitmap using utils.mattobitmap() function. i'm assuming function can called in java layer after importing utils class. i want transfer data memory address pointed uint32_t* bmpcontent; in code below. jniexport void jnicall java_com_nod_nodcv_nodcvactivity_runfilter( jnienv *env, jclass clazz, jobject outbmp, jbytearray indata, jint width, jint height, jint choice, jint filter) { int outsz = width*height; int insz = outsz + outsz/2; androidbitmapinfo bmpinfo; if (androidbitmap_getinfo(env, outbmp, &bmpinfo) < 0) { throwjavaexception(env,"gaussianblur","error retrieving bitmap meta data"); return; } if (bmpinfo.format != android_bitmap_format_rgba_8888) { throwjavaexception(env,"gaussianblur","expecting rgba_8888 format"); return; } uint32_t* bmpcontent; if (androidbitmap_lockpixels(env, outbmp,(void**)&bmpcontent)...
Read more

android - org.xmlpull.v1.XmlPullParserException: expected: START_TAG {http://schemas.xmlsoap.org/soap/envelope/}Envelope -

i trying hit soap api in application login purpose , getting above mentioned error , can 1 tell me going wrong , first time soap apis. here code hit soap :- vector<object> args = new vector<object>(); hashtable<string, object> hashtable = new hashtable<string, object>(); hashtable.put("email", "mss.siddhart28@gmail.com"); hashtable.put("password", "siddharth"); args.add(hashtable); soapserializationenvelope envelope = new soapserializationenvelope( soapenvelope.ver11); envelope.dotnet = true; envelope.xsd = soapserializationenvelope.xsd; envelope.enc = soapserializationenvelope.enc; (new marshalhashtable()).register(envelope); httptransportse androidhttptransport = new httptransportse( "http://tempuri.org/", 15000); androidhttptransport.debug = true; string result = ""; try { soapobject request = new soapobject("http:...
Read more

python - How to remove the Xframe Options header in django? -

i have made page has iframe . inside iframe want show multiple different links article facebook, or news, or youtube video or other possible url. but, due xframe header, unable so. referred following link: https://docs.djangoproject.com/en/1.8/ref/clickjacking/ , django xframeoptionsmiddleware (x-frame-options) - allow iframe client ip but didn't help. my settings.py file's middleware_classes is: middleware_classes = ( 'django.contrib.sessions.middleware.sessionmiddleware', 'django.middleware.common.commonmiddleware', 'django.middleware.csrf.csrfviewmiddleware', 'django.contrib.auth.middleware.authenticationmiddleware', 'django.contrib.auth.middleware.sessionauthenticationmiddleware', 'django.contrib.messages.middleware.messagemiddleware', 'django.middleware.clickjacking.xframeoptionsmiddleware', ) from http://django-secure.readthedocs.org/en/latest/middleware.html , found using ...
Read more