Possible Duplicate:
How Do I Get The Correct Latitude and Longitude From An Uploaded iPhone Photo?
我会提供照片,并想知道我有哪些选择与地标照片合作。 www.un.org/Depts/DGACM/index_french.htm 这是可能的吗?
此外,<> 我需要知道什么时候用了。 我可以抓住这一信息,了解我亲眼的照片,但照相机的图像是什么?
Possible Duplicate:
How Do I Get The Correct Latitude and Longitude From An Uploaded iPhone Photo?
我会提供照片,并想知道我有哪些选择与地标照片合作。 www.un.org/Depts/DGACM/index_french.htm 这是可能的吗?
此外,<> 我需要知道什么时候用了。 我可以抓住这一信息,了解我亲眼的照片,但照相机的图像是什么?
是的,这是可能的。
您必须使用
assetsLibrary = [[ALAssetsLibrary alloc] init];
groups = [NSMutableArray array];
[assetsLibrary enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop)
{
if (group == nil)
{
return;
}
[groups addObject:group];
} failureBlock:^(NSError *error)
{
// Possibly, Location Services are disabled for your application or system-wide. You should notify user to turn Location Services on. With Location Services disabled you can t access media library for security reasons.
}];
这将列举你们的资产集团。 其次,你挑选小组并列举其资产。
ALAssetGroup *group = [groups objectAtIndex:0];
[group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop)
{
if (result == nil)
{
return;
}
// Trying to retreive location data from image
CLLocation *loc = [result valueForProperty:ALAssetPropertyLocation];
}];
如今,<代码>loc变量包含带照片的地点。 您在使用前应对照<代码>ALErrorInvalidProperty进行核对,因为一些照片可能缺乏这一数据。
您可具体说明
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