1 00:00:07,820 --> 00:00:12,820 Hey guys this is Kayla with slopes and in this video we're going to access the flicker API. 2 00:00:12,920 --> 00:00:15,280 That's what we're going to use to download photos by the way. 3 00:00:15,280 --> 00:00:18,770 If you didn't know already you probably did because I've said it like 100 times. 4 00:00:18,770 --> 00:00:21,340 Anyway we're going to access the Flickr API. 5 00:00:21,470 --> 00:00:25,780 We're going to get ourselves an API key and then I'm going to show you how the Flickr API is you are 6 00:00:25,780 --> 00:00:30,910 l scheme works so that you know how you can download photos exactly the way you want to. 7 00:00:31,090 --> 00:00:36,440 So go ahead and pull open your Safari browser and we're actually going to go ahead and go to Flickr 8 00:00:36,440 --> 00:00:40,170 dot com slash services slash developer. 9 00:00:40,220 --> 00:00:42,460 And this is the Flickr developer guide. 10 00:00:42,470 --> 00:00:43,910 There's all kinds of information. 11 00:00:43,910 --> 00:00:47,090 They have a pretty good community business. 12 00:00:47,240 --> 00:00:49,050 They have all this stuff. 13 00:00:49,100 --> 00:00:53,300 The only thing you need to know is that actually you need to log into a Yahoo account because Flickr 14 00:00:53,300 --> 00:00:55,040 is owned by Yahoo. 15 00:00:55,040 --> 00:01:00,400 So once you log into your Yahoo account you can go here and click on API. 16 00:01:00,410 --> 00:01:05,070 Once that load you can click on request an API key K.. 17 00:01:05,670 --> 00:01:07,910 And we're gonna go to get your API. 18 00:01:07,980 --> 00:01:09,620 The number one option. 19 00:01:09,690 --> 00:01:11,160 Now there are two options here. 20 00:01:11,170 --> 00:01:14,790 Commercial commercial or noncommercial. 21 00:01:14,790 --> 00:01:17,810 Now that's for us our app does not make money. 22 00:01:17,850 --> 00:01:22,200 You could also use this though if your app does make money but you're a family run smaller independent 23 00:01:22,200 --> 00:01:22,910 business. 24 00:01:23,100 --> 00:01:27,600 You're developing a product which is not currently commercial but might be in the future or you're building 25 00:01:27,600 --> 00:01:31,930 a personal web site or blog where you're only using your own images but our app doesn't make money. 26 00:01:31,950 --> 00:01:32,700 That's us. 27 00:01:32,700 --> 00:01:35,770 So let's apply for a noncommercial key. 28 00:01:35,820 --> 00:01:36,050 OK. 29 00:01:36,050 --> 00:01:38,910 Now of course this shows you're the owner of the account. 30 00:01:39,150 --> 00:01:47,130 The name of our app is pixel city and we're building an app that downloads photos from the internet 31 00:01:47,790 --> 00:01:52,220 and displays them for a location. 32 00:01:52,650 --> 00:01:55,410 Pretty simple little description. 33 00:01:56,060 --> 00:01:57,890 And let's go ahead and let's check this. 34 00:01:57,890 --> 00:02:02,850 I acknowledge that flicker members own all rights to their content and it's my responsibility to make 35 00:02:02,850 --> 00:02:06,330 sure that my project does not contravene those rights. 36 00:02:06,390 --> 00:02:10,680 That's where that's what we're doing we're not using the photos for anything other than displaying them. 37 00:02:10,680 --> 00:02:15,950 And we also agreed to comply with the flicker terms of use press submit. 38 00:02:16,130 --> 00:02:22,970 And as soon as it loads boom there's our API key there is our secret and all we're going to actually 39 00:02:22,970 --> 00:02:25,400 mean is the API key. 40 00:02:25,460 --> 00:02:32,660 So we are now at a point where we can create a Constans file on our project and we can use that to basically 41 00:02:32,660 --> 00:02:34,670 store our API key for use. 42 00:02:34,670 --> 00:02:38,310 So let's go ahead and pull open our tax code project really quickly. 43 00:02:38,450 --> 00:02:41,930 We'll go back to the API and we'll look at how you work in just a second. 44 00:02:42,050 --> 00:02:48,680 But for now we're going to go into the utilities folder and create a new file click swift file and we're 45 00:02:48,680 --> 00:02:55,130 going to call this Constance and these are going to be used for things that maybe we use a lot and you 46 00:02:55,130 --> 00:03:00,020 know when we go back we can actually use this photocell identifier as a constant. 47 00:03:00,050 --> 00:03:03,190 We use it more than one time drop a pin. 48 00:03:03,230 --> 00:03:04,480 We use that more than one time. 49 00:03:04,490 --> 00:03:09,870 We can create a constant that basically makes our app a little less strongly. 50 00:03:10,040 --> 00:03:15,380 When you retyped strings that can cause problems if you mistype it here or mis type it here it's better 51 00:03:15,380 --> 00:03:20,060 to create one constant variable and then call that variable because you can't mistype the variable things 52 00:03:20,130 --> 00:03:22,540 to auto complete. 53 00:03:22,580 --> 00:03:24,970 But anyway let's go create one for our API. 54 00:03:25,350 --> 00:03:26,180 So in here. 55 00:03:26,180 --> 00:03:29,260 Go ahead and just type let API key. 56 00:03:29,750 --> 00:03:34,750 And of course we're going to need to paste it from here so select your API key. 57 00:03:34,910 --> 00:03:36,680 Copy it and paste it. 58 00:03:36,920 --> 00:03:37,640 And that's that. 59 00:03:37,670 --> 00:03:38,780 There's your API. 60 00:03:39,020 --> 00:03:39,900 Awesome. 61 00:03:39,950 --> 00:03:45,950 So that's saved in our app Let's go ahead and head back to flicker and we're going to go to what's called 62 00:03:45,950 --> 00:03:52,280 the flicker API Explorer which you can access by going to this very long you l flicker dot com slash 63 00:03:52,280 --> 00:03:59,780 services slash API slash explore slash flicker dot photos that search flicker stuff Flickr photos that 64 00:03:59,780 --> 00:04:03,780 search is actually the part of the API that we're going to use. 65 00:04:03,830 --> 00:04:12,590 The reason for that being is that you can pass in a latitude and longitude and a radius and it will 66 00:04:12,590 --> 00:04:18,460 allow you to find all photos within that latitudinal radius really really cool. 67 00:04:18,470 --> 00:04:27,290 Now the API Explorer here allows you to choose which parts of the potential options you want to add 68 00:04:27,290 --> 00:04:29,410 in the API call which is very cool. 69 00:04:29,410 --> 00:04:32,230 You can see there's a lot of different options here. 70 00:04:32,540 --> 00:04:35,330 You can sort photos by the minimum upload date. 71 00:04:35,330 --> 00:04:37,880 Maybe you only want photos that are from this month. 72 00:04:37,910 --> 00:04:41,020 Or you can sort them by content type. 73 00:04:41,030 --> 00:04:42,530 Maybe you actually only want video. 74 00:04:42,530 --> 00:04:43,790 You can download those too. 75 00:04:44,150 --> 00:04:51,320 But for us we just want a Latitude Longitude a radius and we have to give the radius in a certain unit. 76 00:04:51,350 --> 00:04:58,460 So for example I'm just going to put in random coordinates here maybe 40 2.8 by one hundred twenty two 77 00:04:58,460 --> 00:05:03,570 point three and the radius we're going to make it a one mile radius. 78 00:05:03,750 --> 00:05:05,350 Whoops a one mile radius. 79 00:05:05,360 --> 00:05:08,810 And let's just say that the unit will be Miles am I. 80 00:05:09,070 --> 00:05:13,420 If you want to use kilometers you can K.M. meters just an it's up to you. 81 00:05:13,420 --> 00:05:16,310 You can set it up to be whatever radius you want. 82 00:05:16,310 --> 00:05:18,370 That's the cool thing about the API. 83 00:05:18,440 --> 00:05:23,200 So we have now given it all of the properties we want and we want to see the output. 84 00:05:23,210 --> 00:05:25,880 Now in this app we're going to be working with Jason. 85 00:05:25,940 --> 00:05:33,890 That's just really easy to use with with iOS and so with Jaison we can get that output. 86 00:05:33,890 --> 00:05:37,590 Now something that you can see here that's very very cool. 87 00:05:37,640 --> 00:05:43,670 We can call this API we can make a call and download all the Jaison without even needing to sign it 88 00:05:43,670 --> 00:05:49,720 with my permissions or a user token or anything we can we can send it as anybody which is cool. 89 00:05:49,730 --> 00:05:53,230 So click do not sign call and then click call method. 90 00:05:54,730 --> 00:05:57,520 Now if we scroll down we'll see what happened. 91 00:05:57,670 --> 00:06:04,540 Looks like it's loading and it froze we're making too many API calls at once. 92 00:06:04,540 --> 00:06:05,770 No that's not true. 93 00:06:05,800 --> 00:06:07,630 I'm actually not sure why it's not loading. 94 00:06:07,630 --> 00:06:11,080 Let's go ahead and try reloading this bad boy. 95 00:06:15,630 --> 00:06:16,030 OK. 96 00:06:16,050 --> 00:06:17,630 Really just not like me. 97 00:06:17,670 --> 00:06:18,590 This is weird. 98 00:06:24,520 --> 00:06:31,720 Cathro one more time just try reloading it and it's just going to keep getting stuck right. 99 00:06:31,720 --> 00:06:36,500 Looks like I'm bringing in the big dogs and bringing in Chrome let's copy this URL. 100 00:06:36,760 --> 00:06:39,910 Let's throw it in Chrome here and let's try it again. 101 00:06:39,910 --> 00:06:43,010 Sometimes when Safari does not work I pick brick. 102 00:06:43,020 --> 00:06:44,720 I have to go to Chrome. 103 00:06:44,770 --> 00:06:45,310 So sad. 104 00:06:45,340 --> 00:06:45,660 OK. 105 00:06:45,670 --> 00:06:46,690 Let's try it again. 106 00:06:46,700 --> 00:06:50,630 Latitude forty two point eight I think 122. 107 00:06:51,010 --> 00:06:56,330 We want that that one twenty two point eight The radius is one. 108 00:06:56,430 --> 00:06:58,350 The unit is Miles. 109 00:06:58,360 --> 00:07:02,400 We want this to output in Jaison and we're not going to sign the call. 110 00:07:02,440 --> 00:07:09,340 Go ahead and click call method and when you scroll down you'll see right here that you get a call. 111 00:07:09,340 --> 00:07:12,860 Now of course the photo data is obscured for the moment. 112 00:07:12,940 --> 00:07:18,670 But when you actually call this in your app all of the photo information will be inside of this dictionary 113 00:07:18,730 --> 00:07:20,060 which is very cool. 114 00:07:20,170 --> 00:07:21,790 So you can see that this is working. 115 00:07:21,790 --> 00:07:24,350 We get a lot of photos. 116 00:07:24,430 --> 00:07:27,390 We get all kinds of information. 117 00:07:27,490 --> 00:07:28,280 And you know what. 118 00:07:28,450 --> 00:07:33,510 The interesting thing is I actually want to set a certain number of results. 119 00:07:33,550 --> 00:07:38,160 So there is another one here that allows us to set the number of results that we get. 120 00:07:38,230 --> 00:07:43,080 And let's say per page let's say per page we want to download 40 photos. 121 00:07:43,090 --> 00:07:48,040 So if I call that method you'll see we get a successful return and look at this. 122 00:07:48,040 --> 00:07:50,960 We get a U R L we can see how it works. 123 00:07:51,070 --> 00:07:55,280 To see this better I'm actually going to copy it and I'm going to paste it into X code. 124 00:07:55,690 --> 00:08:00,220 So I'm just going to paste it here so we can take a look at what we're what we're dealing with here. 125 00:08:00,250 --> 00:08:07,300 So API flicker dot com slash services slash rest and the method here is flickery photos like that search. 126 00:08:07,300 --> 00:08:11,470 Like I said our API key is here but does that match. 127 00:08:11,470 --> 00:08:12,040 No it doesn't. 128 00:08:12,040 --> 00:08:14,680 So that's just a generic API that they're showing. 129 00:08:14,680 --> 00:08:16,420 We'll fix that in just a second. 130 00:08:16,480 --> 00:08:20,340 Now the Latitude has passed in the longitude the radius is one. 131 00:08:20,410 --> 00:08:27,340 The unit is miles per page we return 40 items and the format is Jaison. 132 00:08:27,460 --> 00:08:34,360 OK don't worry about no Jason callback but this is a u r l that we are going to use to download all 133 00:08:34,360 --> 00:08:39,910 the photos that we want but we need to write a function that allows us to pass in the relevant data 134 00:08:39,940 --> 00:08:45,760 like our API key the latitude and longitude the number of items that we want returned. 135 00:08:45,790 --> 00:08:52,030 So let's do that now let's go ahead and write a function called phunk flicker you RL and I'm doing this 136 00:08:52,030 --> 00:08:58,450 in my Constans file because I want to be able to access this anywhere and Constans file allows me to 137 00:08:58,450 --> 00:08:59,220 do that. 138 00:08:59,230 --> 00:09:02,430 So we're going to pass in a couple things into this function. 139 00:09:02,680 --> 00:09:05,430 OK let's go in brackets so it stops yelling at us. 140 00:09:05,680 --> 00:09:08,160 We need to pass in our API key. 141 00:09:08,290 --> 00:09:10,850 We need to pass in an annotation. 142 00:09:10,900 --> 00:09:13,860 And that's the same same as the pin that gets dropped. 143 00:09:13,860 --> 00:09:18,280 We're going to pass in that annotation and pull out the latitude and longitude. 144 00:09:18,310 --> 00:09:21,800 We're also going to pass in a number of photos. 145 00:09:21,850 --> 00:09:22,390 OK. 146 00:09:22,660 --> 00:09:28,560 So we're going to say flicker yourself for API key and we're going to just create an internal parameter 147 00:09:28,560 --> 00:09:31,320 here called Key of type String. 148 00:09:31,420 --> 00:09:35,890 We're going to say with annotation with an internal parameter of annotation. 149 00:09:36,100 --> 00:09:39,390 Now we already have a custom subclass called drop a pen. 150 00:09:39,430 --> 00:09:47,200 We'll use that and number of photos for a number. 151 00:09:47,260 --> 00:09:49,190 And that's going to be of type int. 152 00:09:49,210 --> 00:09:56,350 Now at the end of this we want this to return to us a string of our finished and perfected you r l. 153 00:09:56,350 --> 00:10:02,740 So in order to return that we're going to actually just use return and now we can pass in this you are 154 00:10:02,740 --> 00:10:03,830 l. 155 00:10:03,910 --> 00:10:07,630 So go ahead and cut this u r l and we're going to modify it to fit our needs. 156 00:10:07,810 --> 00:10:12,220 So return a string with this you r l. 157 00:10:12,250 --> 00:10:13,630 Now all of this is good. 158 00:10:13,810 --> 00:10:17,140 Let's go ahead and minimize this we can see more of it. 159 00:10:17,260 --> 00:10:20,200 This is good right API to flicker services rest. 160 00:10:20,200 --> 00:10:21,100 Flickr photo search. 161 00:10:21,100 --> 00:10:27,400 Nothing changes but the first thing that changes is the API key we can pass that in using string encapsulation. 162 00:10:27,400 --> 00:10:31,510 So let's go ahead and use our little special string syntax here. 163 00:10:31,750 --> 00:10:38,050 And I know it's hard to see because of the length of the string but we're going to pass in API key and 164 00:10:38,050 --> 00:10:39,730 where the old key was. 165 00:10:39,730 --> 00:10:43,750 Now we're passing in our own key now for the latitude. 166 00:10:43,750 --> 00:10:45,040 We can do the same thing. 167 00:10:45,330 --> 00:10:45,930 OK. 168 00:10:46,090 --> 00:10:55,280 We can pass in the annotation and then we can get the coordinate and we can pull out the latitude. 169 00:10:55,330 --> 00:10:56,430 Same with the longitude. 170 00:10:56,430 --> 00:11:04,050 We can do the same thing inside of those parentheses we can go to the annotation coordinate that longitude 171 00:11:04,050 --> 00:11:05,440 and we can pull that out. 172 00:11:05,440 --> 00:11:07,660 Now the radius the unit that never changes. 173 00:11:07,660 --> 00:11:10,780 But what if we want to change the number of results we get. 174 00:11:10,780 --> 00:11:16,630 So we're going to pass in using our concatenation we're going to pass in our sorry concatenation. 175 00:11:16,630 --> 00:11:21,040 The encapsulation we're going to pass in the number of results that we want. 176 00:11:21,280 --> 00:11:26,720 So now when we call this function it's going to return to us a perfect U r l. 177 00:11:26,920 --> 00:11:32,310 Now I'm actually going to go ahead and I'm going to make this a constant for now. 178 00:11:33,160 --> 00:11:41,230 And I want to print it first just so we can see that it works print u r l and then return you r l k. 179 00:11:41,230 --> 00:11:46,930 Let's go ahead and let's find a space to call this and see how we do. 180 00:11:46,930 --> 00:11:53,190 Let's see if we can get a nice nice fancy u r l I think a good place to call it would be here. 181 00:11:53,350 --> 00:11:57,730 Now let's go ahead and call that WIPs. 182 00:11:58,390 --> 00:12:01,620 We're going to print it because it returns a string to us. 183 00:12:01,780 --> 00:12:07,990 And let's go ahead and try it now let's build and run a whoops of course we forgot to call all of our 184 00:12:07,990 --> 00:12:08,860 fancy stuff. 185 00:12:08,870 --> 00:12:09,870 What's wrong with us. 186 00:12:10,100 --> 00:12:17,080 OK so we are going to go ahead and pass in the API key from our Constans file our annotation. 187 00:12:17,070 --> 00:12:17,980 We do not yet have. 188 00:12:17,980 --> 00:12:27,090 So let's actually move this down below because then we have our annotation pass in the annotation then 189 00:12:27,100 --> 00:12:31,100 number of photos let's say 40. 190 00:12:31,120 --> 00:12:33,310 So let's go ahead and build and run. 191 00:12:33,490 --> 00:12:40,600 When we tap to drop a pin the screen should slide up and we should see this print out a nice u r l and 192 00:12:40,600 --> 00:12:46,050 we can actually go ahead and check it to see if it properly is pulling from flicker. 193 00:12:46,570 --> 00:12:49,260 So pull open the simulator. 194 00:12:49,670 --> 00:12:50,590 There we go. 195 00:12:50,860 --> 00:12:54,200 Let's drop a pin and let's see what prints out. 196 00:12:54,220 --> 00:12:55,060 All right look at that. 197 00:12:55,060 --> 00:12:56,460 Very cool. 198 00:12:56,570 --> 00:12:57,910 So yeah. 199 00:12:57,940 --> 00:13:04,420 Looks like it's working there's a nice you Arel let's copy it and paste it over to Chrome and let's 200 00:13:04,420 --> 00:13:05,370 look at it. 201 00:13:05,860 --> 00:13:07,530 Yeah we have our API. 202 00:13:07,570 --> 00:13:08,480 That's ours. 203 00:13:08,530 --> 00:13:14,310 That is the latitude that is the longitude and 40 results when we call it. 204 00:13:14,320 --> 00:13:22,410 Look at that we get an array of all the photos all the data from that exact GPS GPS coordinate. 205 00:13:22,480 --> 00:13:28,750 So so cool we're going to dive into this in much greater detail in the next video and we're going to 206 00:13:28,750 --> 00:13:34,090 actually start retrieving the you or else for each image and then downloading the images using Alamo 207 00:13:34,090 --> 00:13:35,170 fire image. 208 00:13:35,170 --> 00:13:37,630 Very very awesome work guys. 209 00:13:37,990 --> 00:13:38,430 So yeah. 210 00:13:38,440 --> 00:13:44,320 Get ready for the next video you can of course delete this print function and we can of course fix this 211 00:13:44,320 --> 00:13:49,600 back to where it was before we were printing out and it's going to undo that we're just returning that 212 00:13:49,600 --> 00:13:50,950 value and. 213 00:13:50,980 --> 00:13:54,240 Yeah let's move on to the next video let's start downloading some images. 214 00:13:54,280 --> 00:13:55,570 I'll see in the next video.