I'm using google places API,
The json return valid results, In my async methods I'm setting markers per each result, the method ends and all of a sudden i get the following thread 1: EXC_BAD_ACCESS code:2 address:0x9243e8, in the output window i get the following: [71539:c07] -[__NSCFString CGImage]: unrecognized selector sent to instance 0xb19dd10
I have no clue how to debug this, or where to look for the problem, all my parameters look good.
thanks
I suspect what you are doing is as a commenter says, treating the returned JSON object as a type it is not. Specifically, from your error, you are treating a string like an image. Generally, JSON doesn't not contain actually images, so when you deserialize it, you will not get images. In the Google Places API, it does not send you images. Instead, it send you URLs to images. You will have to download the images using the URLs you get from the Places API.
Here is some code I use. This method gets the place list from the API based on a CLLocation and returns it as a much more easily digested NSArray of NSDictionary objects each containing the important met-data pertaining to a place:
-(NSArray*)getPlaceListForLocation:(CLLocation*)inLocation {
NSString* requestStr = [NSString stringWithFormat:#"https://maps.googleapis.com/maps/api/place/nearbysearch/json?key=%#&location=%f,%f&radius=100&sensor=true",self.googleAPIKey,inLocation.coordinate.latitude,inLocation.coordinate.longitude];
NSURL* requestURL = [NSURL URLWithString:requestStr];
NSLog(#"Fetching place data with URL = %#", requestURL);
NSData* requestData = [NSData dataWithContentsOfURL:requestURL];
if ( nil != requestData ) {
NSError* jsonError = nil;
id resultsObj = [NSJSONSerialization JSONObjectWithData:requestData options:0 error:&jsonError];
if ( nil == resultsObj ) {
if ( nil != jsonError ) {
NSLog(#"%#",jsonError.description);
}
return nil;
}
NSArray* itemList = [resultsObj objectForKey:#"results"];
if ( nil == itemList || itemList.count == 0) {
return nil;
}
NSMutableArray* placeList = [NSMutableArray arrayWithCapacity:itemList.count];
for ( NSDictionary* item in itemList ) {
NSString* name = [item objectForKey:#"name"];
NSString* iconURL = [item objectForKey:#"icon"];
NSString* vicinity = [item objectForKey:#"vicinity"];
NSDictionary* geometryDict = [item objectForKey:#"geometry"];
NSDictionary* locationDict = [geometryDict objectForKey:#"location"];
NSMutableDictionary* itemDict = [NSMutableDictionary dictionaryWithCapacity:2];
if ( nil != name ) {
[itemDict setObject:name forKey:#"name"];
}
if (nil != iconURL ) {
[itemDict setObject:iconURL forKey:#"iconurl"];
}
if ( nil != vicinity ) {
[itemDict setObject:vicinity forKey:#"vicinity"];
}
if ( nil != locationDict ) {
NSString* latitudeStr = [locationDict objectForKey:#"lat"];
NSString* longitudeStr = [locationDict objectForKey:#"lng"];
double latitude = [latitudeStr doubleValue];
double longitude = [longitudeStr doubleValue];
CLLocation* placeLoc = [[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
CLLocationDistance distance = [inLocation distanceFromLocation:placeLoc];
[itemDict setObject:[NSNumber numberWithDouble:distance] forKey:#"distance"];
}
[placeList addObject:itemDict];
}
return placeList;
}
return nil;
}
Then I display these in a table view using the returned NSArray as the data source. In order to display the icon, I use something like MKNetworkImageView in order to fetch the icon based on the URL.
I am using the YouTube API in UIWebView.
I have created a NSString with the HTML5 player that I load in the UIWebView. Everything works perfectly on iPhone 5 and iPad.
But, if I test the app using an iPhone 4, the player returns the buffering state all the time. Only if I explicitly press the play button, the player starts playing, without stopping again for buffering. It seems that although the video has been buffered, the player still gives me this state.
Is anyone aware of this problem? Any idea?
Thank you very much in advance!!
In LBYouTubePlayerViewController.m file
Replace Following method on yr old Method....
then test...
-(NSURL*)_extractYouTubeURLFromFile:(NSString *)html error:(NSError *__autoreleasing *)error {
NSString *JSONStart = nil;
// NSString *JSONStartFull = #"ls.setItem('PIGGYBACK_DATA', \")]}'";
NSString *JSONStartFull = #"bootstrap_data = \")]}'";
NSString *JSONStartShrunk = [JSONStartFull stringByReplacingOccurrencesOfString:#" " withString:#""];
if ([html rangeOfString:JSONStartFull].location != NSNotFound)
JSONStart = JSONStartFull;
else if ([html rangeOfString:JSONStartShrunk].location != NSNotFound)
JSONStart = JSONStartShrunk;
if (JSONStart != nil) {
NSScanner* scanner = [NSScanner scannerWithString:html];
[scanner scanUpToString:JSONStart intoString:nil];
[scanner scanString:JSONStart intoString:nil];
NSString *JSON = nil;
[scanner scanUpToString:#"}\";" intoString:&JSON];
JSON = [NSString stringWithFormat:#"%#}",JSON]; // Add closing bracket } to get vallid JSON again
// [scanner scanUpToString:#"\");" intoString:&JSON];
JSON = [self _unescapeString:JSON];
NSError* decodingError = nil;
NSDictionary* JSONCode = nil;
// First try to invoke NSJSONSerialization (Thanks Mattt Thompson)
id NSJSONSerializationClass = NSClassFromString(#"NSJSONSerialization");
SEL NSJSONSerializationSelector = NSSelectorFromString(#"dataWithJSONObject:options:error:");
if (NSJSONSerializationClass && [NSJSONSerializationClass respondsToSelector:NSJSONSerializationSelector]) {
JSONCode = [NSJSONSerialization JSONObjectWithData:[JSON dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingAllowFragments error:&decodingError];
}
else {
JSONCode = [JSON objectFromJSONStringWithParseOptions:JKParseOptionNone error:&decodingError];
}
if (decodingError) {
// Failed
*error = decodingError;
}
else {
// Success
NSDictionary *dict = [JSONCode objectForKey:#"content"];
NSDictionary *dictTemp = [dict objectForKey:#"video"];
NSArray* videos = [dictTemp objectForKey:#"fmt_stream_map"];
NSString* streamURL = nil;
if (videos.count) {
NSString* streamURLKey = #"url";
if (self.quality == LBYouTubePlayerQualityLarge) {
streamURL = [[videos objectAtIndex:0] objectForKey:streamURLKey];
}
else if (self.quality == LBYouTubePlayerQualityMedium) {
unsigned int index = MAX(0, videos.count-2);
streamURL = [[videos objectAtIndex:index] objectForKey:streamURLKey];
}
else {
streamURL = [[videos lastObject] objectForKey:streamURLKey];
}
}
if (streamURL) {
return [NSURL URLWithString:streamURL];
}
else {
*error = [NSError errorWithDomain:kLBYouTubePlayerControllerErrorDomain code:2 userInfo:[NSDictionary dictionaryWithObject:#"Couldn't find the stream URL." forKey:NSLocalizedDescriptionKey]];
}
}
}
else {
*error = [NSError errorWithDomain:kLBYouTubePlayerControllerErrorDomain code:3 userInfo:[NSDictionary dictionaryWithObject:#"The JSON data could not be found." forKey:NSLocalizedDescriptionKey]];
}
return nil;
}
I'm trying to simply search for videos using a query, which is working perfectly using the below code.
// Create a service object for executing queries
GTLServiceYouTube *service = [[GTLServiceYouTube alloc] init];
// Services which do not require sign-in may need an API key from the
// API Console
service.APIKey = #"AIzaSy...";
// Create a query
GTLQueryYouTube *query = [GTLQueryYouTube queryForSearchListWithPart:#"id,snippet"];
query.maxResults = 10;
query.q = searchBar.text;
query.videoEmbeddable = #"true";
query.type = #"video";
//query.country = #"US";
// Execute the query
GTLServiceTicket *ticket = [service executeQuery:query
completionHandler:^(GTLServiceTicket *ticket, id object, NSError *error) {
// This callback block is run when the fetch completes
if (error == nil) {
GTLYouTubeSearchListResponse *products = object;
[videoArray removeAllObjects];
// iteration of items and subscript access to items.
for (GTLYouTubeSearchResult *item in products) {
NSMutableDictionary *dictionary = [item JSONValueForKey:#"id"];
NSLog(#"%#", [dictionary objectForKey:#"videoId"]);
YoutubeVideo *video = [[YoutubeVideo alloc]init];
[video setLblTitle:item.snippet.title];
//Get youtube video image
[video setImgIconURL:[NSURL URLWithString:item.snippet.thumbnails.defaultProperty.url]];
[video setLblVideoURL:[dictionary objectForKey:#"videoId"]];
[video setLblChannelTitle:item.snippet.channelTitle];
[videoArray addObject:video];
}
reloadData = YES;
[tableView reloadData];
//Download images asynchronously
[NSThread detachNewThreadSelector:#selector(downloadImages)
toTarget:self
withObject:nil];
}else{
NSLog(#"Error: %#", error.description);
}
}];
However, now I'd like to display certain information about the video. Some of this information I can get out of
item.snippet
But I also need to get the video duration, and number of views. How can I get them using Youtube API 3.0?? I also had an idea to try using GData just for this, but it literally triples the load time to use
NSString *JSONString = [NSString stringWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:#"https://gdata.youtube.com/feeds/api/videos/%#?v=2&alt=json", [video lblVideoURL]]] encoding:NSUTF8StringEncoding error:nil ];
How do I get the duration of the video, plus the number of views the video has?
Search query only accept ID and Snippet as parts. If you change to Video List Query you can include other parts, but you have to use one of the filters.
I think you'll have to get the video ID with the search query and do another query (Now a video query) filtering by ID (the Id you got), than you can get all other information of the videos you searched.
The problem is i'm having trouble getting the video ID, i think the API use the word "identifier" instead of "id" because it's a reserved word of objective-c.
Edit: Yeah, it was just a matter of time, just request my GTLYoutubeSearchResponse.JSON, an manipulated it as i wanted.
FIRST QUERY:
GTLQueryYouTube *query = [GTLQueryYouTube queryForSearchListWithPart:#"id,snippet"];
query.maxResults = 10;
query.q = #"iphone";
query.fields = #"items(id,snippet)";
query.order = #"viewCount";
//query.channelId = #"UCsnbNwitAF9BzjjdMfRyK2g";//Kavaco
[appDelegate.service executeQuery:query
completionHandler:^(GTLServiceTicket *ticket,
id object,
NSError *error) {
if (error == nil) {
appDelegate.videos = object;
[self performSegueWithIdentifier:#"videoList" sender:self];
}
else {
NSLog(#"%#", error.description);
}
}];
SECOND QUERY: In my TableViewController, inside my cellForRowAtIndexPath i do another query for each video i found. Be sure to request only the variables you need to avoid spending your credits, in my case i requested only viewCount.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"myCell" forIndexPath:indexPath];
GTLYouTubeVideo *video = appDelegate.videos[indexPath.row];
NSMutableDictionary *videoIdJson = [video.JSON objectForKey:#"id"];
NSString *videoId = [videoIdJson objectForKey:#"videoId"];
cell.textLabel.text = video.snippet.title;
GTLQueryYouTube *query = [GTLQueryYouTube queryForVideosListWithPart:#"statistics"];
query.identifier = videoId;
query.maxResults = 1;
query.fields = #"items/statistics(viewCount)";
[appDelegate.service executeQuery:query
completionHandler:^(GTLServiceTicket *ticket,
id object,
NSError *error) {
if (error == nil) {
GTLYouTubeVideoListResponse *detalhe = object;
NSMutableDictionary *responseJSON = detalhe.JSON;
NSArray *tempArray = [responseJSON objectForKey:#"items"];
NSMutableDictionary *items = tempArray[0];
NSMutableDictionary *statistics = [items objectForKey:#"statistics"];
_views = [[NSString alloc] initWithFormat:#"Views: %#",[statistics objectForKey:#"viewCount"]];
cell.detailTextLabel.text = _views;
}
else {
NSLog(#"%#", error.description);
}
}];
cell.detailTextLabel.text = _views;
return cell;
}
Hope it helps.
Collect the id from search API and do another video list API call is the proper way to do what you want to achieve. The video list API call can put multiple video ids separate by comma in the same call. The extra call shouldn't consider exhausting because this is expected behavior on API v3:
Project Member #1 je...#google.com
That's the expected behavior, and not likely to change. Since the
search.list() method can return channels, videos, and playlists, only
properties that make sense for all of those resource types are
returned in the search responses. If you need to obtain any other
properties, making a follow-up request to, e.g., videos.list() is
required. Note that you can pass in up to 50 video ids to
videos.list(), so you can effectively look up an entire page's worth
of search.list() results in a single video.list() call.
If you try https://developers.google.com/youtube/v3/docs/videos/list#try-it , you set contentDetails,statistics as the part, you should able to get the following result:
"contentDetails": {
"duration": "PT20M38S",
"dimension": "2d",
"definition": "hd",
"caption": "false",
"licensedContent": false
},
"statistics": {
"viewCount": "191",
"likeCount": "7",
"dislikeCount": "0",
"favoriteCount": "0",
"commentCount": "0"
}
PT20M38S means 20 minutes and 38 seconds, based on ISO 8601(http://en.wikipedia.org/wiki/ISO_8601)
The best way for make this is:
if (!service) {
service = [[GTLServiceYouTube alloc] init];
service.shouldFetchNextPages = YES;
service.shouldFetchInBackground = YES;
service.retryEnabled = YES;
service.APIKey = #"AIzaSyDSO2JPnM_r9VcDrDJJs_d_7Li2Ttk2AuU";
}
[youtubeList removeAllObjects];
GTLQueryYouTube *query = [GTLQueryYouTube queryForSearchListWithPart:#"id"];
query.maxResults = 50;
query.q = withText;
query.fields = #"items(id)";
query.order = #"viewCount";
query.type = #"video";
// query.videoDuration = #"long";//any-long-medium-short
__block NSInteger incrementRequest = 0;
[service executeQuery:query completionHandler:^(GTLServiceTicket *ticket, id object, NSError *error) {
if (error) {
NSLog(#"Error is!! = %#", error.localizedDescription);
return;
}
GTLYouTubeVideoListResponse *idsResponse = object;
for (GTLYouTubeVideoListResponse *videoInfo in object) {
[youtubeList addObject:videoInfo.JSON];
GTLQueryYouTube *query2 = [GTLQueryYouTube queryForVideosListWithIdentifier:[[videoInfo.JSON valueForKey:#"id"] valueForKey:#"videoId"] part:#"id,contentDetails,snippet,statistics"];
query2.maxResults = 1;
query2.fields = #"items(id,contentDetails,snippet,statistics)";
query2.order = #"viewCount";
[service executeQuery:query2 completionHandler:^(GTLServiceTicket *ticket, id object, NSError *error) {
if (error) {
NSLog(#"Error is!! = %#", error.localizedDescription);
return;
}
GTLYouTubeVideoListResponse *detalhe = object;
for (NSMutableDictionary *tmpDict in youtubeList) {
if ([[[tmpDict valueForKey:#"id"] valueForKey:#"videoId"] isEqualToString:[[[detalhe.JSON valueForKey:#"items"] objectAtIndex:0] valueForKey:#"id"]]) {
[tmpDict removeObjectForKey:#"id"];
//condition personal
if (![Utils parseISO8601TimeIsGrater30:[[[[detalhe.JSON valueForKey:#"items"] objectAtIndex:0] valueForKey:#"contentDetails"] valueForKey:#"duration"]]) {
BOOL isBlockedInUs = NO;
for (NSString *countryRestric in [[[[[detalhe.JSON valueForKey:#"items"] objectAtIndex:0] valueForKey:#"contentDetails"] valueForKey:#"regionRestriction"] valueForKey:#"blocked"]) {
if ([countryRestric isEqualToString:#"US"]) {
isBlockedInUs = YES;
break;
}
}
if (!isBlockedInUs) {
[tmpDict addEntriesFromDictionary:detalhe.JSON];
[tmpDict setValue:[[[[detalhe.JSON valueForKey:#"items"] objectAtIndex:0] valueForKey:#"snippet"] valueForKey:#"publishedAt"] forKey:#"publishedAt"];
} else {
[youtubeList removeObject:tmpDict];
}
} else {
[youtubeList removeObject:tmpDict];
}
break;
}
}
incrementRequest ++;
if ([idsResponse.items count] == incrementRequest) {
//Finish
[self.tableView reloadData];
}
}];
}
}];
I am parsing an itunes rss feed with JSON but I have run into a problem. The following code is running properly for one the movieName output but I still don't get the movieSummary output.
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
allDataDictionary = [NSJSONSerialization JSONObjectWithData:webData options:0 error:nil];
feed = [allDataDictionary objectForKey:#"feed"];
arrayOfEntry = [feed objectForKey:#"entry"];
for (NSDictionary *dictionTitle in arrayOfEntry) {
NSDictionary *title = [dictionTitle objectForKey:#"title"];
NSString *labelTitle = [title objectForKey:#"label"];
[arrayLable addObject:labelTitle];
NSDictionary *summary = [dictionTitle objectForKey:#"summary"];
NSString *labelSummary = [summary objectForKey:#"label"];
[arraySummary addObject:labelSummary];
}
movieName.text = [arrayLable objectAtIndex:0];
movieSummary.text = [arraySummary objectAtIndex:0]; //This is not displaying
}
Here is the link that I am parsing: http://itunes.apple.com/us/rss/topmovies/limit=300/json
I run into this situation a lot. I use something like this. Replace your code
NSString *labelTitle = [title objectForKey:#"label"];
[arrayLable addObject:labelTitle];
with
NSString * labelTitle = [ [ title objectForKey:#"label" ] ifNullThenNil ] ;
[ arrayLabel addObject:labelTitle ? labelTitle : #"" ] ; // you could also use #"<unknown>" or similar instead of #""
where -ifNullThenNil is provided via category:
#implementation NSObject (IfNullThenNil)
-(id)ifNullThenNil { return self ; }
#end
#implementation NSNull (IfNullThenNil)
-(id)ifNullThenNil { return nil ; }
#end
The problem was that when I was adding the strings to the Array that it sometimes contained NULL's thus the following code helped me out
if ([[arrayName objectAtIndex:0] isKindOfClass:[NSNull class]]) {
labelName.text = #"This is NULL";
} else {
[arrayName addObject:labelName];
}
if ([[arraySummary objectAtIndex:0] isKindOfClass:[NSNull class]]) {
labelSummary.text = #"This is NULL";
} else {
[arraySummary addObject:labelSummary];
}
I use TouchJSON to convert the following to an NSDictionary object
// sample JSON object
{
data = (
{
companyId = 4779;
companyName = "ABC Corporation";
},
{
companyId = 4806;
companyName = "EFG Corporation";
}
);
dataCount = 2;
success = 1;
}
NSString *src = #"http://mysite/app1/companyList.php";
NSURL *url = [[NSURL alloc] initWithString:src];
NSData *data = [[NSData alloc] initWithContentsOfURL:url];
NSError *error = nil;
NSDictionary *dic = [[CJSONDeserializer deserializer] deserializeAsDictionary:data error:&error];
int dataCount = (int) [dic valueForKey:#"dataCount"];
// This is where I have problem with. The (dataCount == 1) expression never evaluates to true even if value of dataCount from the JSON object equals to 1.
if ( dataCount == 1 ){
// do something
} else {
// do something else
}
Have I done anything wrong?
I'd appreciate any help.
[dic valueForKey:#"dataCount"] will be an NSNumber. You'll need to call -intValue on it to get an int.
int dataCount = [[dic valueForKey:#"dataCount"] intValue];
if (dataCount == 1) {
...
}