1 00:00:00,350 --> 00:00:10,620 This sexual comments out this statement here and these are ending curly brace of this statement and 2 00:00:11,070 --> 00:00:18,990 so and we could actually put this for statement put this for a loop outside of this enclave. 3 00:00:19,020 --> 00:00:19,680 OK. 4 00:00:20,010 --> 00:00:27,470 And inside of the uncreate effort so that the execution of this for loop would happen only once. 5 00:00:27,570 --> 00:00:28,040 OK. 6 00:00:28,140 --> 00:00:36,270 So let's actually copy this for a loop here and let's actually put it here out after these students 7 00:00:36,270 --> 00:00:37,630 reviews re. 8 00:00:38,270 --> 00:00:39,030 OK. 9 00:00:39,420 --> 00:00:47,030 And then let's actually comment out the for loop here inside of this comfort Comerford OK. 10 00:00:47,400 --> 00:00:53,400 And this uncreate my fate is going to be actually executed only when the application is actually run 11 00:00:53,430 --> 00:01:00,220 by the user when the user actually touches the icon of the application in his or her phone. 12 00:01:00,450 --> 00:01:03,530 And then our application starts in that time. 13 00:01:03,540 --> 00:01:05,960 These are uncreate me if it is going to be executed. 14 00:01:05,970 --> 00:01:06,850 OK. 15 00:01:06,990 --> 00:01:13,430 So let's actually create a toast in order to show you that when this effort is going to be caught our 16 00:01:13,440 --> 00:01:18,610 toast is actually a way in order to actually show a message to the user. 17 00:01:18,670 --> 00:01:21,470 OK I talk more about hosta later in this course. 18 00:01:21,570 --> 00:01:27,000 But for now remember this is this is actually our way in order to show and to show a message to the 19 00:01:27,000 --> 00:01:27,660 user. 20 00:01:27,750 --> 00:01:35,150 So here inside of this uncreate Meffert here for example I can just type in toast that make text. 21 00:01:35,580 --> 00:01:40,580 So here we need to actually specify our free argument. 22 00:01:40,590 --> 00:01:41,160 OK. 23 00:01:41,160 --> 00:01:45,430 So for the first argument just type in here is come on. 24 00:01:45,870 --> 00:01:50,200 And here we need to actually specify the text that I want to show you to the user. 25 00:01:50,310 --> 00:01:57,300 So here I just put into double quotes as you can see here the type of these are valuable is Chad sequence. 26 00:01:57,420 --> 00:02:03,770 So if we could just put into double quotes and here I can just typing uncreate Mefford is caught. 27 00:02:03,900 --> 00:02:04,560 OK. 28 00:02:04,770 --> 00:02:08,780 Comma and here we need to actually specify the duration of this message. 29 00:02:08,940 --> 00:02:13,310 So here I can just type in toast that line long. 30 00:02:14,010 --> 00:02:23,160 OK here after the ending of round in Brachet of this Mefford I could just type in that show. 31 00:02:23,890 --> 00:02:24,500 OK. 32 00:02:24,840 --> 00:02:27,900 Here I called the show Smurfette and this tossed here. 33 00:02:27,900 --> 00:02:28,550 OK. 34 00:02:28,890 --> 00:02:32,160 And let's actually do it on our project and see what happens. 35 00:02:32,160 --> 00:02:36,680 So now let's actually run our project and see what happens. 36 00:02:37,680 --> 00:02:40,350 As you can see here now we can see this Meffert. 37 00:02:40,350 --> 00:02:45,600 This message here uncreate Meffert is called Let's actually click on the spot in here as you can see 38 00:02:45,600 --> 00:02:45,860 here. 39 00:02:45,870 --> 00:02:47,630 We put this for a loop here. 40 00:02:47,640 --> 00:02:52,580 Inside of this uncreate my faith and after that for a loop I actually called this that unclick lesson 41 00:02:52,580 --> 00:02:55,480 and my friend on the spitting results OK. 42 00:02:55,500 --> 00:03:00,230 And here we are actually putting these lines of code in order to show all of these values to the screen. 43 00:03:00,360 --> 00:03:03,270 So let's actually click on the spot and let's see what happens. 44 00:03:03,390 --> 00:03:05,940 As you can see if you can see these values here. 45 00:03:06,120 --> 00:03:12,210 And let's actually click on this button again as you can see here these values don't change any more 46 00:03:12,210 --> 00:03:12,510 here. 47 00:03:12,510 --> 00:03:13,030 OK. 48 00:03:13,230 --> 00:03:16,050 This for loop is going to be executed only once. 49 00:03:16,170 --> 00:03:16,800 OK. 50 00:03:17,070 --> 00:03:21,240 And then inside of this are certain calculus and an Mefford in say that his uncle. 51 00:03:21,250 --> 00:03:22,680 I'm afraid we can't see. 52 00:03:22,680 --> 00:03:29,430 We just tried to output these values the values that are actually inside of these of variables to the 53 00:03:29,430 --> 00:03:29,820 screen. 54 00:03:29,820 --> 00:03:30,360 OK. 55 00:03:30,570 --> 00:03:32,030 So hopefully that makes sense. 56 00:03:32,040 --> 00:03:38,340 Let's actually comment out this for a loop here because I want to show you another way in order to actually 57 00:03:38,490 --> 00:03:40,070 write your codes. 58 00:03:40,190 --> 00:03:40,760 OK. 59 00:03:40,920 --> 00:03:47,880 I want to show you to use actually switch instead of if statements in order to actually specify the 60 00:03:47,880 --> 00:03:51,330 correct values and outputs those values to the screen. 61 00:03:51,330 --> 00:03:51,830 OK. 62 00:03:52,290 --> 00:03:55,410 So here as you can see we commented out this for a loop here. 63 00:03:55,560 --> 00:03:57,970 Let's actually uncomment this for a loop. 64 00:03:58,260 --> 00:03:58,790 OK. 65 00:03:58,920 --> 00:04:02,540 And now let's actually uncommented this statement. 66 00:04:02,550 --> 00:04:05,040 This is a first time statement here. 67 00:04:05,490 --> 00:04:06,630 OK. 68 00:04:07,140 --> 00:04:10,820 I think this is the best solution for this problem. 69 00:04:11,280 --> 00:04:12,350 OK. 70 00:04:13,020 --> 00:04:18,720 And uncomment this first time valuable here as you can see we assign the value of false to the first 71 00:04:18,720 --> 00:04:19,230 time. 72 00:04:19,230 --> 00:04:24,810 And here uncomment the end in curly brace as you can see here of this statement. 73 00:04:26,750 --> 00:04:32,260 So now let's actually comment out these of these statements here OK. 74 00:04:33,780 --> 00:04:40,230 As you can see here now I want to actually use the switch statement in order to actually specify the 75 00:04:40,230 --> 00:04:43,260 correct values and output those values to the screen. 76 00:04:43,260 --> 00:04:43,740 OK. 77 00:04:44,010 --> 00:04:46,260 So here again just typing sweet. 78 00:04:46,880 --> 00:04:47,370 OK. 79 00:04:47,510 --> 00:04:55,230 And inside the apprentice's I can just type in student reviews brackets and inside the branch brackets 80 00:04:55,260 --> 00:04:59,230 I can just refer to the name of the index variable. 81 00:04:59,730 --> 00:05:05,120 And here I can just open and close my switch statement by using these curly braces. 82 00:05:05,310 --> 00:05:12,020 So instead of the switch statement as you can see here I can just type in chase. 83 00:05:12,760 --> 00:05:13,420 OK. 84 00:05:13,740 --> 00:05:17,050 Case 5 colon. 85 00:05:17,540 --> 00:05:18,240 OK. 86 00:05:18,840 --> 00:05:23,110 Plus plus five stars leave review. 87 00:05:23,100 --> 00:05:23,940 OK. 88 00:05:24,400 --> 00:05:26,200 Semi-colon break. 89 00:05:26,970 --> 00:05:34,170 And here what I am saying is switch between the values of these students to use some index. 90 00:05:34,200 --> 00:05:34,540 OK. 91 00:05:34,560 --> 00:05:40,860 So for example for the first time that this loop is going to be executed the value of this index variable 92 00:05:40,860 --> 00:05:41,810 is zero. 93 00:05:41,940 --> 00:05:44,020 And here is when I try to check this condition. 94 00:05:44,190 --> 00:05:49,800 So 0 is less than the value of the length of this student reviews array. 95 00:05:49,950 --> 00:05:50,630 OK. 96 00:05:51,150 --> 00:05:56,880 So you can actually go inside of this for a loop and then it can actually execute this switch statement. 97 00:05:57,180 --> 00:06:03,540 So here we are saying that switch between the values of these students revues sub index. 98 00:06:03,540 --> 00:06:06,780 So the value of the index for the first time is zero. 99 00:06:06,780 --> 00:06:07,280 OK. 100 00:06:07,440 --> 00:06:14,310 So student reviews sub zero as you can see here that this means that the value that is inside of the 101 00:06:14,310 --> 00:06:16,790 index 0 is for example. 102 00:06:16,800 --> 00:06:18,980 As you can see here five number five. 103 00:06:19,020 --> 00:06:19,830 OK. 104 00:06:20,310 --> 00:06:27,030 So as you can see here inside of the switch statement I'm saying in that case it means that in case 105 00:06:27,180 --> 00:06:32,250 the value that is inside of the index zero of this array is number five which it is. 106 00:06:32,280 --> 00:06:33,980 As you can see the value is. 107 00:06:33,990 --> 00:06:43,170 Number five ok then increment the value of these 5 stars of The View valuable by one and then return 108 00:06:43,170 --> 00:06:44,010 that value to me. 109 00:06:44,010 --> 00:06:44,690 OK. 110 00:06:45,030 --> 00:06:47,890 And that break out of this switch statement. 111 00:06:48,270 --> 00:06:48,760 OK. 112 00:06:48,810 --> 00:07:04,440 So here again I can just type in case four plus plus false starts review semi-colon rage case free plus 113 00:07:04,440 --> 00:07:07,880 plus free review. 114 00:07:09,570 --> 00:07:27,570 Break case two colon plus plus two starts review semicolon break case 1 colon plus plus one star review 115 00:07:28,740 --> 00:07:30,900 semicolon break. 116 00:07:31,580 --> 00:07:32,560 OK. 117 00:07:33,510 --> 00:07:39,720 So now the result of this switch statement is actually the same as the result of this if statements 118 00:07:39,720 --> 00:07:41,310 that you actually created here. 119 00:07:41,340 --> 00:07:46,890 OK so now let's actually run our project again and let's see what happens. 120 00:07:46,890 --> 00:07:51,520 So as you can see here our application is actually running on the emulator. 121 00:07:51,630 --> 00:07:53,040 So let's actually click on this. 122 00:07:53,040 --> 00:07:57,770 Show me the results button as you can see we can see these values again here. 123 00:07:57,810 --> 00:07:58,430 OK. 124 00:07:58,620 --> 00:08:02,700 So let's actually click on this button again as you can see these values don't change. 125 00:08:02,730 --> 00:08:04,500 Our application is actually working right. 126 00:08:04,500 --> 00:08:05,200 OK. 127 00:08:05,760 --> 00:08:09,630 So hopefully that makes sense and I think that's enough for this tutorial. 128 00:08:09,690 --> 00:08:14,820 If you have any questions please post the discussion in the course and I'll do my best to answer all 129 00:08:14,820 --> 00:08:15,980 of your questions. 130 00:08:16,110 --> 00:08:20,260 Thank you very much for watching and I'll see you in the next tutorial.