您应该将资产添加到albumRequest

you should add assets to albumRequest

    //Create Album
    PHAssetCollectionChangeRequest *albumRequest = [PHAssetCollectionChangeRequest creationRequestForAssetCollectionWithTitle:@"ChameleonSensors"];
    PHAssetChangeRequest *createImageRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:[UIImage imageNamed:@"test"]];
    [albumRequest addAssets:@[createImageRequest.placeholderForCreatedAsset]];