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(Unicode C) Get Individual Photo InfoAssuming we have the ID of a Photo, this example demonstrates how to retrieve the photo information and parse the JSON.
#include <C_CkOAuth2W.h> #include <C_CkRestW.h> #include <C_CkStringBuilderW.h> #include <C_CkJsonObjectW.h> void ChilkatSample(void) { HCkOAuth2W oauth2; HCkRestW rest; BOOL success; const wchar_t *photoId; HCkStringBuilderW sbPath; const wchar_t *responseJson; HCkJsonObjectW json; BOOL canDelete; int height; int width; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example assumes a previously obtained an access token oauth2 = CkOAuth2W_Create(); CkOAuth2W_putAccessToken(oauth2,L"FACEBOOK-ACCESS-TOKEN"); rest = CkRestW_Create(); // Connect to Facebook... success = CkRestW_Connect(rest,L"graph.facebook.com",443,TRUE,TRUE); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkOAuth2W_Dispose(oauth2); CkRestW_Dispose(rest); return; } // Provide the authentication credentials (i.e. the access key) CkRestW_SetAuthOAuth2(rest,oauth2); // Assumes we've already obtained a Photo ID. photoId = L"10210199026347451"; sbPath = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbPath,L"/v2.7/"); CkStringBuilderW_Append(sbPath,photoId); // Select the fields we want. // This example will select many of the possible fields. // See https://developers.facebook.com/docs/graph-api/reference/photo/ CkRestW_AddQueryParam(rest,L"fields",L"id,album,can_delete,can_tag,from,height,width,images,link,name,name_tags,picture,place,target"); responseJson = CkRestW_fullRequestNoBody(rest,L"GET",CkStringBuilderW_getAsString(sbPath)); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkOAuth2W_Dispose(oauth2); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); return; } json = CkJsonObjectW_Create(); CkJsonObjectW_putEmitCompact(json,FALSE); CkJsonObjectW_Load(json,responseJson); // Show the JSON in human-readable format. wprintf(L"%s\n",CkJsonObjectW_emit(json)); // A sample response is shown below. // Demonstrate how to parse values from the JSON. wprintf(L"Album name: %s\n",CkJsonObjectW_stringOf(json,L"album.name")); canDelete = CkJsonObjectW_BoolOf(json,L"can_delete"); wprintf(L"Can Delete: %d\n",canDelete); wprintf(L"From Name: %s\n",CkJsonObjectW_stringOf(json,L"from.name")); height = CkJsonObjectW_IntOf(json,L"height"); width = CkJsonObjectW_IntOf(json,L"width"); wprintf(L"Dimensions: %dx%d\n",width,height); wprintf(L"First Image Source: %s\n",CkJsonObjectW_stringOf(json,L"images[0].source")); // A sample JSON response is shown here. // { // "id": "10210199026347451", // "album": { // "created_time": "2009-10-19T00:06:46+0000", // "name": "Timeline Photos", // "id": "1237223526054" // }, // "can_delete": true, // "can_tag": true, // "from": { // "name": "Matt Smith", // "id": "10224048320139890" // }, // "height": 120, // "width": 120, // "images": [ // { // "height": 120, // "source": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026347451_7830642117574407060_n.jpg?oh=a7f9ed10cf9cd81a82adeb541c60e2e2&oe=58ABB195", // "width": 120 // } // ], // "link": "https:\/\/www.facebook.com\/photo.php?fbid=10210199026347451&set=a.1237223526054.2038240.1093202869&type=3", // "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...", // "picture": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026347451_7830642117574407060_n.jpg?oh=a7f9ed10cf9cd81a82adeb541c60e2e2&oe=58ABB195" // } // CkOAuth2W_Dispose(oauth2); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkJsonObjectW_Dispose(json); } |
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