1 00:00:00,180 --> 00:00:06,630 Hire everyone in this theater Tauriel we're going to go ahead and create our 19th Android application. 2 00:00:06,930 --> 00:00:10,410 And in this story I want to talk about enhanced for loop. 3 00:00:10,410 --> 00:00:10,980 OK. 4 00:00:11,310 --> 00:00:17,880 So let's just create a new Android studio project and here we need to actually specify a name for our 5 00:00:17,880 --> 00:00:19,350 Android application. 6 00:00:19,410 --> 00:00:23,580 So just type in here app 19 and then click on next. 7 00:00:23,670 --> 00:00:31,260 And here we need to actually specify the API 16 Android 4.1 Jelly Bean for minimum STK OK. 8 00:00:31,410 --> 00:00:38,220 And then click on next blank activity next and here click on finish. 9 00:00:38,640 --> 00:00:44,850 OK so now let's actually select this hello world takes you here and then press on delete key on your 10 00:00:44,850 --> 00:00:52,350 keyboard and now it's actually double click on this race folder here and then double click on the folder 11 00:00:52,710 --> 00:00:57,960 and then double click on this activity underline minute example and then select this filleting action 12 00:00:57,960 --> 00:01:01,560 button here and then press undelete key on your keyboard. 13 00:01:01,790 --> 00:01:02,320 OK. 14 00:01:02,580 --> 00:01:05,880 So now let's ask you to go back inside this content underline minute example. 15 00:01:06,180 --> 00:01:13,080 And then I actually double click on these content underline that example tab here in order to make this 16 00:01:13,080 --> 00:01:14,340 area wider. 17 00:01:14,340 --> 00:01:18,450 So now I can actually design my user interface for this application. 18 00:01:18,480 --> 00:01:19,240 OK. 19 00:01:19,440 --> 00:01:25,230 So first of all it's actually like a linearly afterwards they call into this relatively here and then 20 00:01:25,230 --> 00:01:29,980 put this linearly outwards equal at the center of this relatively. 21 00:01:30,000 --> 00:01:32,930 OK so now this is our linear layout. 22 00:01:33,360 --> 00:01:38,800 And then there's actually the right of vertical scroll view into these linearly outward circle. 23 00:01:38,880 --> 00:01:43,360 And now it's actually right a large takes you into this scroll view here. 24 00:01:43,530 --> 00:01:44,150 OK. 25 00:01:44,610 --> 00:01:46,710 So as you can see here this is our text view. 26 00:01:46,830 --> 00:01:51,330 So just double the candlesticks view and then delete the text of this text we have here. 27 00:01:51,640 --> 00:01:56,640 And for the ID just type in here TXI the country names. 28 00:01:57,610 --> 00:01:58,600 OK. 29 00:01:59,580 --> 00:02:02,300 And then press on until key on your keyboard. 30 00:02:02,730 --> 00:02:08,100 So let's actually go back and say this main activity the double file here and then actually delete these 31 00:02:08,190 --> 00:02:12,480 lines of code that are actually related to the Options menu button. 32 00:02:12,540 --> 00:02:13,240 OK. 33 00:02:13,530 --> 00:02:18,150 And then there's actually delete delete this block of code that is actually related to the floating 34 00:02:18,150 --> 00:02:19,510 action button here. 35 00:02:19,680 --> 00:02:20,490 OK. 36 00:02:21,300 --> 00:02:25,180 And now we can actually start putting our own code here. 37 00:02:25,230 --> 00:02:25,730 OK. 38 00:02:25,950 --> 00:02:30,110 So now I want to actually create an army of streambed values. 39 00:02:30,260 --> 00:02:30,960 OK. 40 00:02:31,170 --> 00:02:39,250 But before that let's actually create an object of type text view so takes beauty UTX the country names. 41 00:02:39,830 --> 00:02:40,630 OK. 42 00:02:41,160 --> 00:02:47,610 Assignment operator and then let's actually cast this object to a text view object find view by ID or 43 00:02:47,640 --> 00:02:50,160 that Id dot the country name. 44 00:02:50,220 --> 00:02:50,980 OK. 45 00:02:51,210 --> 00:02:54,650 And then you need to actually put a semicolon at the end of your statement. 46 00:02:54,690 --> 00:02:58,020 And then let's actually create an array of string values. 47 00:02:58,020 --> 00:03:02,820 So first of all I need to actually specify the type of my array and then I need to actually put in a 48 00:03:02,820 --> 00:03:08,390 pair of brackets after my type name in order to specify that I want to create an array. 49 00:03:08,400 --> 00:03:09,070 OK. 50 00:03:09,210 --> 00:03:13,170 And then for the name of this Aure just type in here country names. 51 00:03:13,310 --> 00:03:15,760 OK assignments operator. 52 00:03:15,930 --> 00:03:22,100 And then here inside of these these curly braces I want to actually put some country names. 53 00:03:22,110 --> 00:03:22,700 OK. 54 00:03:23,100 --> 00:03:28,230 So here I just pasting some country names inside of these curly braces here. 55 00:03:28,380 --> 00:03:34,190 So as you can see here these are my country names here as you can see that I actually put in of these 56 00:03:34,200 --> 00:03:35,760 curly braces of this area. 57 00:03:36,150 --> 00:03:42,810 And I notice that I actually put a putting a new line character after each country name here as you 58 00:03:42,810 --> 00:03:44,860 can see by Slash and. 59 00:03:44,910 --> 00:03:45,320 OK. 60 00:03:45,390 --> 00:03:51,330 In order to actually create a new like charity after each country name so that we can actually see these 61 00:03:51,330 --> 00:03:52,540 values on the screen. 62 00:03:52,560 --> 00:03:53,420 OK. 63 00:03:53,760 --> 00:03:59,280 And then I need to actually put in a semicolon at the end of my statement here. 64 00:03:59,280 --> 00:04:07,020 And let's actually create another strange object or keystream and the name of my object is all country 65 00:04:07,020 --> 00:04:08,110 names. 66 00:04:08,840 --> 00:04:09,460 OK. 67 00:04:09,700 --> 00:04:14,820 Assignment operator and then assign an empty value to this object here. 68 00:04:15,000 --> 00:04:15,680 OK. 69 00:04:15,960 --> 00:04:16,460 OK. 70 00:04:16,620 --> 00:04:19,340 Now I want you to create a for loop. 71 00:04:19,530 --> 00:04:19,960 OK. 72 00:04:20,010 --> 00:04:26,310 In order to iterate over each of these values each of these string values that are actually the inside 73 00:04:26,310 --> 00:04:28,150 of this country names are. 74 00:04:28,160 --> 00:04:28,580 OK. 75 00:04:28,770 --> 00:04:32,770 But this time I want to actually use an enhanced for loop. 76 00:04:32,970 --> 00:04:35,530 So in order to create an enhanced for loop. 77 00:04:35,640 --> 00:04:39,900 First of all I need to actually type in for and in say the. 78 00:04:40,080 --> 00:04:43,230 Let's actually create a strange value stream. 79 00:04:43,320 --> 00:04:47,470 And the name of my string object is for example Contarini. 80 00:04:47,530 --> 00:04:47,990 OK. 81 00:04:48,030 --> 00:04:50,750 And then I need to put in a colon here. 82 00:04:51,150 --> 00:04:51,750 OK. 83 00:04:51,930 --> 00:04:56,910 And then I need to actually refer to the name of this country names as a country names. 84 00:04:57,180 --> 00:05:01,790 And then I need to open and close this by using these curly braces. 85 00:05:01,910 --> 00:05:08,530 So as you can see here in sight of this prentices I actually created first of all a string object or 86 00:05:08,540 --> 00:05:11,390 case containing colon country names. 87 00:05:11,690 --> 00:05:17,870 In this way it can actually either get is right or that each of these values that are actually inside 88 00:05:17,870 --> 00:05:19,030 of these country names. 89 00:05:19,270 --> 00:05:19,680 OK. 90 00:05:19,760 --> 00:05:26,060 It's going to be either 8 sequentially or they're every each of these values that are actually inside 91 00:05:26,060 --> 00:05:27,680 of these country names. 92 00:05:27,680 --> 00:05:33,040 And then it's going to actually assign that value to this country name object here to this country in 93 00:05:33,050 --> 00:05:38,600 a radio but so here inside of this for loop I can just typing all country names. 94 00:05:38,730 --> 00:05:44,260 OK assignments operator all country names plus country name. 95 00:05:45,780 --> 00:05:51,910 OK so now here again just after this follow up after the end in calibers of this for loop I can just 96 00:05:51,910 --> 00:05:57,470 type in the country names that set text and inside Apprentice's. 97 00:05:57,570 --> 00:06:04,150 I can't just refer to the name of this ol country names object here as I can see all country names. 98 00:06:04,150 --> 00:06:05,500 And now it's actually not. 99 00:06:05,520 --> 00:06:07,750 I'll protect and see what happens. 100 00:06:07,980 --> 00:06:08,450 OK. 101 00:06:08,650 --> 00:06:13,000 Now as you can see our application is actually running on this emulator. 102 00:06:13,180 --> 00:06:15,760 And here you can see these values here. 103 00:06:15,880 --> 00:06:20,500 Outputted actually to the screen and we can actually scroll down the screen to see the other values. 104 00:06:20,500 --> 00:06:21,110 OK. 105 00:06:21,400 --> 00:06:27,700 And these are actually the values that are actually inside of these country names Auret and here and 106 00:06:27,700 --> 00:06:31,170 here we actually created a loop here as you can see in line twenty eight. 107 00:06:31,300 --> 00:06:36,220 In order to either eight or each of these values that are actually inside of this country names are 108 00:06:36,260 --> 00:06:41,320 8 and then it's going to assign each of these values to this country name or object. 109 00:06:41,320 --> 00:06:47,640 And here inside of this for loop we're actually assigned that value to this all Kultury names are actually 110 00:06:47,680 --> 00:06:48,570 the object here. 111 00:06:48,640 --> 00:06:49,270 OK. 112 00:06:49,660 --> 00:06:55,660 These are valuable and we could actually write this code in another way so I can just comment out this 113 00:06:55,660 --> 00:06:56,640 line of code here. 114 00:06:56,890 --> 00:06:58,110 And I will just type in here. 115 00:06:58,150 --> 00:07:01,800 All country names plus equals Contarini. 116 00:07:01,890 --> 00:07:02,390 OK. 117 00:07:02,530 --> 00:07:04,800 And if I run my project again let's see what happens. 118 00:07:04,840 --> 00:07:07,810 So now as you can see again we can see these values here. 119 00:07:07,810 --> 00:07:08,260 OK. 120 00:07:08,380 --> 00:07:12,310 And we can actually scroll down the screen in order to see the other values. 121 00:07:12,310 --> 00:07:16,210 So this is how you actually use the enhanced for loop. 122 00:07:16,210 --> 00:07:18,800 So I think that's enough for this whole deal. 123 00:07:18,880 --> 00:07:23,770 And if you have any questions please post the discussion in the course and then I'll do my best to answer 124 00:07:23,800 --> 00:07:24,950 all of your questions. 125 00:07:25,150 --> 00:07:28,830 Thank you very much for watching and I'll see you in the next tutorial.