1 00:00:00,400 --> 00:00:05,910 Hire everyone in this theater you are really going to go ahead and actually create our seventh Android 2 00:00:05,910 --> 00:00:06,900 application. 3 00:00:06,900 --> 00:00:07,850 So just click on this. 4 00:00:07,860 --> 00:00:15,930 Start a new Android studio project and for the application name just type in here app 7 and then click 5 00:00:15,930 --> 00:00:25,480 on next and then choose the output API 16:4 your minimum STK next and black Planche activity next. 6 00:00:25,740 --> 00:00:27,270 And here click on finish. 7 00:00:27,450 --> 00:00:28,270 OK everyone. 8 00:00:28,350 --> 00:00:31,240 Now as you can see here our project is created. 9 00:00:31,440 --> 00:00:37,080 So let's just delete this hello or text you here and then let's just actually delete these floating 10 00:00:37,110 --> 00:00:38,280 action button here. 11 00:00:38,340 --> 00:00:44,520 So double click on this address for the here and then lay out and then double double click on this activity 12 00:00:44,520 --> 00:00:45,950 on the line made that example. 13 00:00:46,140 --> 00:00:48,530 And here's the list these are floating action button here. 14 00:00:48,540 --> 00:00:49,200 OK. 15 00:00:49,770 --> 00:00:55,660 So now let's actually go back and say this content underline made that example and then dragging a linear 16 00:00:55,910 --> 00:00:57,460 layout vertical OK. 17 00:00:57,660 --> 00:01:01,140 Inside this screen and in the center of the screen. 18 00:01:01,410 --> 00:01:07,200 So let's actually click on this relatively out here and let's actually find the padding attributes for 19 00:01:07,200 --> 00:01:12,140 this relatively out and for the are actually assigned number 0. 20 00:01:12,900 --> 00:01:19,410 And here as you can see now the beats at the height of R are linearly Ellsworth's the code is actually 21 00:01:19,410 --> 00:01:21,270 covering the the entire screen. 22 00:01:21,270 --> 00:01:21,950 OK. 23 00:01:22,320 --> 00:01:28,710 So let's actually try again a text you are large takes you into this linearly out here and then actually 24 00:01:28,710 --> 00:01:30,130 double click on this text. 25 00:01:30,380 --> 00:01:35,490 And for the text you can just assign a text here for example. 26 00:01:35,490 --> 00:01:44,500 For example you can just put in start and for the ID just type in here to the start. 27 00:01:45,420 --> 00:01:48,230 And let's actually dragging about in here. 28 00:01:48,780 --> 00:01:55,060 So let's just find the bottom component here and then break it here and double click on the spot. 29 00:01:55,320 --> 00:02:07,410 And for the text just typing here start the loop and for the ID just type in between loop and as you 30 00:02:07,410 --> 00:02:11,640 can see here I want to actually put a space between these two components. 31 00:02:11,670 --> 00:02:17,550 This takes you on the spot and again just dragging on top a large takes you here in between these two 32 00:02:17,550 --> 00:02:18,860 components. 33 00:02:19,090 --> 00:02:26,400 I can just delete the text of this text you and then I can just find the Margene attribute for this 34 00:02:26,400 --> 00:02:27,470 takes you here. 35 00:02:27,480 --> 00:02:34,100 So as you can see this is the margin attribute and for the margin I can just assign number 20 here. 36 00:02:34,110 --> 00:02:37,590 So as you can see there is a difference between these two components here. 37 00:02:37,590 --> 00:02:38,080 OK. 38 00:02:38,400 --> 00:02:41,610 So now let's actually go inside this main activity that you will find here. 39 00:02:41,820 --> 00:02:44,970 And let's actually delete these lines of code here. 40 00:02:45,050 --> 00:02:49,830 It is lines of code too because these are actually related to the floating action button. 41 00:02:50,220 --> 00:03:04,030 And here let's actually create a text view object text through the XTi start and then I can just cast 42 00:03:04,030 --> 00:03:06,520 this object to a text view object. 43 00:03:07,380 --> 00:03:07,980 OK. 44 00:03:08,000 --> 00:03:25,750 Find you by ID are that Id dot the X the start and the button button and loop assignment operator button 45 00:03:27,800 --> 00:03:33,790 find you by ID or that Id dot PTEN loop. 46 00:03:33,920 --> 00:03:39,710 So now let's actually make it important to listen to the clicks that the user make. 47 00:03:40,070 --> 00:03:48,970 So I can't just type in PTEN loop that set and click listen a new view that actually listen or OK. 48 00:03:49,340 --> 00:03:53,910 So now here let's actually create a for loop in this tutorial. 49 00:03:53,960 --> 00:03:58,970 I want to actually show you the full up how you can actually create four loops in Java so I can just 50 00:03:58,970 --> 00:04:05,150 type in four and then I can actually put in a pair of round brackets here and then in order to start 51 00:04:05,150 --> 00:04:11,460 the loop I can't just create a variable here so I can't just take it in ain't I. 52 00:04:11,600 --> 00:04:13,140 Assignment operator zero. 53 00:04:13,370 --> 00:04:16,660 So as you can see here first of all I actually created a valuable. 54 00:04:16,930 --> 00:04:17,170 OK. 55 00:04:17,180 --> 00:04:20,470 And then I assign numbers not numbers 0 to this value. 56 00:04:20,500 --> 00:04:20,810 OK. 57 00:04:20,810 --> 00:04:26,690 Now I need to actually specify when my loop is going to is going to end. 58 00:04:26,960 --> 00:04:33,770 So I can just type in until I is listable equal to number 10 and then I need to put in a semicolon here 59 00:04:34,310 --> 00:04:40,730 and in here I need to actually specify that what happens whenever this loop executes. 60 00:04:40,780 --> 00:04:42,660 You want the value of this. 61 00:04:42,830 --> 00:04:48,120 Are you valuable to actually to be increased by 1. 62 00:04:48,620 --> 00:04:49,380 OK. 63 00:04:49,880 --> 00:04:53,180 And then I need to open and close this two for using these curly braces. 64 00:04:53,180 --> 00:04:58,390 So here I can just type in the start that said text. 65 00:04:58,400 --> 00:05:05,930 And now inside the practice's I can just refer to the name of this variable. 66 00:05:06,800 --> 00:05:10,030 And then because this is actually of type Integer. 67 00:05:10,160 --> 00:05:17,030 And and here we're are actually assigning an integer number to this at the start of we need to actually 68 00:05:17,360 --> 00:05:24,200 convert this value to a string value by actually putting a plus operator and then or two or two double 69 00:05:24,200 --> 00:05:24,810 quotes here. 70 00:05:24,850 --> 00:05:29,060 OK so now let's actually run our application and see what happens. 71 00:05:29,060 --> 00:05:31,550 So now as you can see our application is running. 72 00:05:31,790 --> 00:05:36,940 And if I click on the spot in here as you can see it says number 10. 73 00:05:37,130 --> 00:05:37,590 OK. 74 00:05:37,730 --> 00:05:43,750 When I click on this button here OK this loop is going to be executed 10 times. 75 00:05:43,760 --> 00:05:44,280 OK. 76 00:05:44,570 --> 00:05:51,260 First we actually specified are valuable and then we specified in our loop is going to end actually 77 00:05:51,560 --> 00:05:56,110 until it is less than or equal to number 10 and plus plus. 78 00:05:56,150 --> 00:06:02,780 And here in this piece of code actually specifies what happens after each execution of a for loop or 79 00:06:02,780 --> 00:06:04,720 this piece of code is going to be executed. 80 00:06:04,740 --> 00:06:06,070 A-plus plus. 81 00:06:06,110 --> 00:06:06,440 OK. 82 00:06:06,500 --> 00:06:08,670 So as you can see Number 10 is here. 83 00:06:09,070 --> 00:06:09,670 OK. 84 00:06:10,040 --> 00:06:12,360 So now I want to show you the while loop. 85 00:06:12,380 --> 00:06:15,160 So now let's actually comment out these lines of code here. 86 00:06:15,200 --> 00:06:16,040 OK everyone. 87 00:06:16,160 --> 00:06:22,430 Now I want to talk about why loop so I can just type in a while and then I put a pair of round brackets 88 00:06:22,550 --> 00:06:29,480 here and now I need to actually specify the condition in which the divide is going to be executed. 89 00:06:29,480 --> 00:06:33,510 So first let me actually create a variable here ain't I. 90 00:06:33,710 --> 00:06:37,890 And then I actually assign a value to my valuable. 91 00:06:37,910 --> 00:06:39,390 For example number zero. 92 00:06:39,740 --> 00:06:48,140 And here in say the prentices I can just type in I is less than or equal to number two number 10. 93 00:06:48,400 --> 00:06:48,730 OK. 94 00:06:48,740 --> 00:06:53,950 And then I need to actually open and close my while loop by using these curly braces. 95 00:06:54,350 --> 00:07:00,130 So as you can see here first of all I actually created a variable of type integer and then inside the 96 00:07:00,130 --> 00:07:06,500 parentheses here I actually specified very my while loop is going to be and that OK. 97 00:07:06,680 --> 00:07:14,450 And now inside these are curly braces I need to actually specify what's going to happen in each execution 98 00:07:14,450 --> 00:07:15,640 of this while loop. 99 00:07:15,650 --> 00:07:22,650 So now I can just type in to the start that said text and then say the prentices. 100 00:07:22,790 --> 00:07:28,400 OK just leave it with the name of this I are valuable here plus two double quotes. 101 00:07:28,520 --> 00:07:34,450 OK here I am actually converting this value bet the value of this variable to a string value. 102 00:07:34,790 --> 00:07:43,970 And now we need to actually increase the value of this variable by one in each execution of these two. 103 00:07:44,030 --> 00:07:44,850 OK so I. 104 00:07:44,870 --> 00:07:46,400 Plus plus. 105 00:07:46,460 --> 00:07:49,130 So let's run our project and see what happens. 106 00:07:49,130 --> 00:07:57,340 So now if you actually click on this pattern here start the loop as you can see it says Number 10. 107 00:07:57,660 --> 00:07:59,080 OK here it's going. 108 00:07:59,100 --> 00:08:02,600 It is actually executing this while loop 10 times. 109 00:08:02,600 --> 00:08:03,280 OK. 110 00:08:03,520 --> 00:08:08,480 And then it is actually executing these lines of code in the inside of this while loop. 111 00:08:08,660 --> 00:08:09,380 OK. 112 00:08:09,590 --> 00:08:13,570 So this is how you actually create a while loop in your project. 113 00:08:13,610 --> 00:08:14,180 OK. 114 00:08:14,360 --> 00:08:19,560 So now I want one actually talk about the do while loop. 115 00:08:19,760 --> 00:08:20,250 OK. 116 00:08:20,330 --> 00:08:26,800 So first let me actually comment out these lines of code here and now I again just type in. 117 00:08:26,920 --> 00:08:27,780 OK. 118 00:08:28,180 --> 00:08:32,700 And then I actually open and close my statement here by using these curly braces. 119 00:08:32,710 --> 00:08:39,400 And then here at the end of this ending curly brace I can just type in wide and then I need to put in 120 00:08:39,730 --> 00:08:43,150 a pair of round brackets after my white statement here. 121 00:08:43,150 --> 00:08:43,590 OK. 122 00:08:43,700 --> 00:08:45,160 That is why we're here. 123 00:08:45,310 --> 00:08:48,770 And then inside of this prentices I can specify the condition. 124 00:08:48,900 --> 00:08:50,330 Ok for example. 125 00:08:50,740 --> 00:08:55,840 First let me actually create another variable for example in y. 126 00:08:56,230 --> 00:09:00,860 Assignment operator zero and here here just specify the condition. 127 00:09:01,030 --> 00:09:06,200 So I can't just typing until Y is less than or equal to number 15. 128 00:09:06,600 --> 00:09:07,230 OK. 129 00:09:07,390 --> 00:09:11,100 And then I need to actually putting a semi-colon at the end of my statement. 130 00:09:11,140 --> 00:09:19,270 So now I get it here I get inside this do our statement here I can't just typing in the start that said 131 00:09:19,270 --> 00:09:24,510 text y ok. 132 00:09:25,010 --> 00:09:35,210 And then I need to actually increase the value of this variable by 1 in each execution of these do while 133 00:09:35,210 --> 00:09:36,350 loop. 134 00:09:36,350 --> 00:09:39,050 So now let's actually run our project and see what happens. 135 00:09:39,230 --> 00:09:39,800 OK. 136 00:09:39,890 --> 00:09:41,490 Now let's actually click on this. 137 00:09:41,500 --> 00:09:43,800 Start the loop plotted here. 138 00:09:45,140 --> 00:09:49,280 And as you can see here our application crashed as you can see. 139 00:09:49,460 --> 00:09:57,560 The problem is we didn't actually convert this up valuable to a string value by using these but using 140 00:09:57,560 --> 00:09:58,510 this plus operation. 141 00:09:58,520 --> 00:10:03,490 And then these two are double quotes and let's actually do our project again.