1 00:00:00,710 --> 00:00:06,360 Hi everyone in this tutorial we're going to go ahead and create another Android application. 2 00:00:06,580 --> 00:00:07,650 So just click on this. 3 00:00:07,660 --> 00:00:16,120 Start any Android studio project and for the application name just type in here app 24 and then click 4 00:00:16,120 --> 00:00:22,980 on next here choose AP I-69 Android 4.1 Jelly Bean for the minimum STK. 5 00:00:23,080 --> 00:00:29,200 Next here choose plant activity next and here click on finish. 6 00:00:29,490 --> 00:00:30,090 OK. 7 00:00:30,250 --> 00:00:37,000 Now select this hello world takes view here and then pressed on delete key on your keyboard and then 8 00:00:37,000 --> 00:00:44,140 double click on the folder layout activity line that example and in and adhere selectees fluting action 9 00:00:44,140 --> 00:00:47,670 button here and then press on delete key on your keyboard. 10 00:00:47,680 --> 00:00:50,170 OK so now let's actually go back inside. 11 00:00:50,210 --> 00:00:57,050 Is our content underline that example and then double click on this tab so that this area is now wider. 12 00:00:57,070 --> 00:01:02,080 OK and now let's actually design the user interface of our application. 13 00:01:02,290 --> 00:01:09,070 So first of all when it actually linearly linearly out vertical here select is linearly alphabetical 14 00:01:09,070 --> 00:01:13,620 here and put it at the center of this relatively here. 15 00:01:13,630 --> 00:01:14,090 OK. 16 00:01:14,140 --> 00:01:21,580 Now let's actually select these are large takes we are here and then put it inside these are linearly 17 00:01:21,590 --> 00:01:22,550 L2 article here. 18 00:01:22,600 --> 00:01:23,210 OK. 19 00:01:23,650 --> 00:01:25,300 And double click on this text view. 20 00:01:25,480 --> 00:01:31,190 And for the text just typing here the original values of the array are colon. 21 00:01:31,210 --> 00:01:31,930 OK. 22 00:01:32,260 --> 00:01:34,970 And then press and enter key on your keyboard. 23 00:01:34,990 --> 00:01:41,710 So now it's actually the right scroll view horizontal OK a horizontal scroll view into this linear length 24 00:01:41,710 --> 00:01:42,670 vertical here. 25 00:01:42,820 --> 00:01:49,480 So select this horizontal scroll view here and put it inside these linearly as vertical and put it at 26 00:01:49,480 --> 00:01:50,020 the center. 27 00:01:50,020 --> 00:01:50,750 OK. 28 00:01:51,190 --> 00:01:54,230 And here as you can see this is our horizontal scroll view. 29 00:01:54,400 --> 00:01:57,720 So as you can see here this is the layout. 30 00:01:58,030 --> 00:02:01,520 And this is the height of this horizontal scroll. 31 00:02:01,520 --> 00:02:01,910 OK. 32 00:02:02,080 --> 00:02:10,580 So select this lay out width of this horizontal scroll view here and then select the wrap content here. 33 00:02:10,660 --> 00:02:11,420 OK. 34 00:02:11,770 --> 00:02:17,580 And then for the length height again select as you can see wrap content. 35 00:02:17,680 --> 00:02:18,690 OK. 36 00:02:19,290 --> 00:02:25,050 And now let's actually write a text view into this horizontal scroll view here. 37 00:02:25,090 --> 00:02:25,860 OK. 38 00:02:25,960 --> 00:02:32,650 So just select this large text view here as you can see and put it inside this horizontal scroll you 39 00:02:32,650 --> 00:02:33,200 here. 40 00:02:33,370 --> 00:02:33,800 OK. 41 00:02:33,820 --> 00:02:37,800 And now let's actually select the text here. 42 00:02:37,810 --> 00:02:41,690 Double click on it and delete the text of this text view. 43 00:02:41,830 --> 00:02:45,240 And for the OED just typing here takes the arrow values. 44 00:02:45,250 --> 00:02:45,830 OK. 45 00:02:46,150 --> 00:02:48,720 And then present enter the key on your keyboard. 46 00:02:48,730 --> 00:02:58,030 OK so now let's actually select another large text view here as you can see and put it inside this linearly 47 00:02:58,030 --> 00:02:58,630 alphabetical. 48 00:02:58,630 --> 00:02:59,230 Here here. 49 00:02:59,260 --> 00:03:04,170 Just put it at the center of this linearly of 20 collocate as you can see. 50 00:03:04,210 --> 00:03:08,200 I made a mistake and put it at the right of this linearly Ellsworthy code. 51 00:03:08,230 --> 00:03:14,790 So I just need to select it and put it at the center of this linearly alphabetical and double click 52 00:03:14,790 --> 00:03:15,340 on it. 53 00:03:15,430 --> 00:03:16,130 OK. 54 00:03:16,480 --> 00:03:22,870 And for the text just typing here the average value is colon. 55 00:03:23,020 --> 00:03:23,640 OK. 56 00:03:23,860 --> 00:03:26,170 And then precedented here on your keyboard. 57 00:03:26,470 --> 00:03:32,140 So now let's actually select another large X view and put it at the center of this linearly or two vertical 58 00:03:32,140 --> 00:03:32,590 here. 59 00:03:32,620 --> 00:03:33,130 OK. 60 00:03:33,130 --> 00:03:39,300 As you can see this is this is the center and double click on it deletes the text of this text view. 61 00:03:39,430 --> 00:03:49,360 And for the OED to say it in here takes the average value OK and then press on the Enter key on your 62 00:03:49,360 --> 00:03:49,730 keyboard. 63 00:03:49,750 --> 00:03:57,550 OK so now let's actually go back inside this main activity of it here and select these are lines of 64 00:03:57,550 --> 00:04:00,150 code that are actually related to the Options menu. 65 00:04:00,640 --> 00:04:06,400 And then here select this block of code that is actually related to the floating action button and then 66 00:04:06,400 --> 00:04:08,600 present the key on your keyboard. 67 00:04:08,660 --> 00:04:11,680 OK so now we can actually put our own codes here. 68 00:04:11,680 --> 00:04:16,870 So here I just play it in some pasting some lines of code and then I'll explain to you what's going 69 00:04:16,870 --> 00:04:17,200 on here. 70 00:04:17,200 --> 00:04:17,780 OK. 71 00:04:18,040 --> 00:04:25,380 So here as you can see first of all I actually created an object from this text last year x the Arab 72 00:04:25,390 --> 00:04:26,070 values. 73 00:04:26,320 --> 00:04:31,470 And here you refer to the name of this ID or KTXA takes the three values. 74 00:04:31,690 --> 00:04:33,410 And here I actually created. 75 00:04:33,710 --> 00:04:41,260 I declared actually the string valuable here and I didn't instantiate this variable yet. 76 00:04:41,410 --> 00:04:45,300 And the name of this string variable is all takes the array values. 77 00:04:45,370 --> 00:04:46,030 OK. 78 00:04:46,480 --> 00:04:53,800 And here I created another object from this takes view class and the name of this object is the X the 79 00:04:54,310 --> 00:04:55,620 average value OK. 80 00:04:55,810 --> 00:05:01,810 And here I just referred to the name of these ID or that ID that the average Raddy OK. 81 00:05:02,420 --> 00:05:06,180 So now this actually creates an array of integer numbers. 82 00:05:06,260 --> 00:05:06,740 OK. 83 00:05:06,800 --> 00:05:10,060 As you can see this is our array of integer numbers. 84 00:05:10,100 --> 00:05:12,340 This is actually a one dimensional array. 85 00:05:12,380 --> 00:05:13,010 OK. 86 00:05:13,280 --> 00:05:16,110 And the name of this area is inked array. 87 00:05:16,280 --> 00:05:19,010 And here I specified these values. 88 00:05:19,010 --> 00:05:19,270 OK. 89 00:05:19,280 --> 00:05:21,670 And then I assign these values to this a. 90 00:05:21,700 --> 00:05:25,690 Ok so now let's actually create a for loop here. 91 00:05:25,820 --> 00:05:31,080 So as you can see here this is my for loop and inside Apprentice's of this for loop. 92 00:05:31,190 --> 00:05:37,360 First of all I created a variable of type integer and then I assigned the value 0 to this variable. 93 00:05:37,520 --> 00:05:43,770 And here I specified that until the value of this index variable is less than the value of the length 94 00:05:43,800 --> 00:05:45,300 of this in a. 95 00:05:45,470 --> 00:05:47,490 Then this loop is going to be executed. 96 00:05:47,570 --> 00:05:54,920 And here I actually incremented this value by one OK after each execution of these for a loop the value 97 00:05:54,920 --> 00:05:57,310 of this index variable is going to be incremented. 98 00:05:57,340 --> 00:06:02,690 OK well you've won and now it's going to be incremented by 1. 99 00:06:02,690 --> 00:06:03,190 OK. 100 00:06:03,320 --> 00:06:11,820 And here inside of the for loop as you can see we have actually instantiated this value. 101 00:06:11,860 --> 00:06:12,370 OK. 102 00:06:12,480 --> 00:06:14,570 All takes the added values. 103 00:06:14,660 --> 00:06:16,220 Here we created this. 104 00:06:16,460 --> 00:06:19,880 Actually we declared this string value in line 19. 105 00:06:20,090 --> 00:06:29,080 And here in line 24 25 inside of this for loop we actually decided to instantiate this variable. 106 00:06:29,240 --> 00:06:36,440 So all the added values assignment operator takes the array values that get text that string. 107 00:06:36,590 --> 00:06:39,830 Here I am actually getting the text of this the x values. 108 00:06:40,010 --> 00:06:44,240 And here I am actually converting this value to a string value. 109 00:06:44,250 --> 00:06:45,700 And here I am actually assigning. 110 00:06:45,700 --> 00:06:48,800 That's why I do this all the x the Arab values here. 111 00:06:48,800 --> 00:06:49,530 OK. 112 00:06:50,000 --> 00:06:54,340 And here I just referred to the name of the 63 values here. 113 00:06:54,410 --> 00:07:03,530 That said text all the Arab values plus ain't ready as you can see in a is actually this Adye that we 114 00:07:03,530 --> 00:07:10,670 actually created in 9:22 and inside brackets of this area I just referred to the name of this index 115 00:07:10,670 --> 00:07:11,250 here. 116 00:07:11,270 --> 00:07:13,040 So it's RASM index. 117 00:07:13,040 --> 00:07:17,760 So for example for the first time that this group is going to be executed the value of this index value 118 00:07:17,760 --> 00:07:18,840 but is zero. 119 00:07:18,860 --> 00:07:23,420 So it's going to actually go inside the index 0 of this area and then it's going to actually give me 120 00:07:23,540 --> 00:07:24,100 this value. 121 00:07:24,110 --> 00:07:24,850 OK. 122 00:07:25,250 --> 00:07:31,610 And here I just created a concatenated value of it is a string value. 123 00:07:31,610 --> 00:07:38,540 Actually I put in a space here and now let's actually run our project and see what happens. 124 00:07:38,540 --> 00:07:43,370 So as you can see here now our application is actually running on this emulator. 125 00:07:43,610 --> 00:07:49,820 And here we can see the original values of the array and these values are actually inside these horizontal 126 00:07:49,820 --> 00:07:50,600 scroll view. 127 00:07:50,840 --> 00:07:54,560 And I can actually scroll to the left in order to see the other values. 128 00:07:54,560 --> 00:07:55,240 OK. 129 00:07:55,310 --> 00:08:00,050 So let's actually go back and say this content underline minute example and here I need to click on 130 00:08:00,050 --> 00:08:07,820 this Kilcash here and now I can't just select this horizontal scroll view and for the layout height 131 00:08:07,880 --> 00:08:10,200 again just assigned a value number 50. 132 00:08:10,280 --> 00:08:13,930 OK I can just select this and assign the value in over 50. 133 00:08:14,150 --> 00:08:17,460 And let's actually run our project again and see what happens. 134 00:08:17,660 --> 00:08:21,360 As you can see here now our application is running on the simulator. 135 00:08:21,510 --> 00:08:25,510 And here if I scroll to the left we can see these values here. 136 00:08:25,580 --> 00:08:26,890 OK. 137 00:08:26,930 --> 00:08:28,830 So hopefully that makes sense. 138 00:08:28,850 --> 00:08:34,190 And now let's actually go back inside this main activity the job of right here and here let's actually 139 00:08:34,280 --> 00:08:36,320 add some lines of code here OK. 140 00:08:36,410 --> 00:08:38,950 First of all it's actually create on my foot here. 141 00:08:38,960 --> 00:08:42,590 So here I just pasting this method and then I'll explain to you what's going on here. 142 00:08:42,590 --> 00:08:43,510 OK. 143 00:08:43,670 --> 00:08:49,510 So as you can see here this is on my foot and the Axis modifier of the Smurfette is public. 144 00:08:49,640 --> 00:08:56,210 The return type of this method is in integer and the name of this method is get the average value. 145 00:08:56,330 --> 00:08:56,980 OK. 146 00:08:57,320 --> 00:08:59,590 And here we have a special type of argument. 147 00:08:59,600 --> 00:09:03,060 OK this is actually an array of integer numbers. 148 00:09:03,290 --> 00:09:08,260 And we could actually add unlimited numbers as an argument to this effect. 149 00:09:08,300 --> 00:09:08,810 OK. 150 00:09:08,870 --> 00:09:12,170 As an argument and let's see how we can use that. 151 00:09:12,170 --> 00:09:12,530 OK. 152 00:09:12,560 --> 00:09:17,600 First of all instead of this Smurfette as you can see I actually created a variable of type integer 153 00:09:18,140 --> 00:09:23,670 and the name of the sum of it the name of this value is actually total value. 154 00:09:23,780 --> 00:09:26,890 And then I assign the value 0 to this variable OK. 155 00:09:27,230 --> 00:09:30,380 And then here I created an enhanced for loop. 156 00:09:30,650 --> 00:09:37,610 So for an inside the practices of this for loop I specified first of all I actually created a variable 157 00:09:37,610 --> 00:09:40,340 of type integer value colon numbers. 158 00:09:40,490 --> 00:09:47,980 So this value here is actually going to iterate over the values that are inside of these numbers arey. 159 00:09:48,200 --> 00:09:49,630 OK so this is very important. 160 00:09:49,670 --> 00:09:52,130 Int dot dot space numbers. 161 00:09:52,140 --> 00:09:52,670 OK. 162 00:09:52,910 --> 00:09:55,410 This is the type of our Aure Okay. 163 00:09:55,760 --> 00:09:59,040 And here when we actually we are actually going to use this method. 164 00:09:59,030 --> 00:10:02,010 Alex you how we can use these Smif at the Cape.