1 00:00:00,290 --> 00:00:05,580 Hire river in this theater they are really going to go ahead and create another Android application. 2 00:00:05,610 --> 00:00:09,030 So just click on this start and you Andrex to your project. 3 00:00:09,060 --> 00:00:09,590 OK. 4 00:00:09,630 --> 00:00:16,440 Now for the application name just typing just typing app 8 and here you can actually specify the company 5 00:00:16,440 --> 00:00:23,010 domain package name and project location and then click on next year make sure that you actually choose 6 00:00:23,010 --> 00:00:29,490 the API 16 Android 4.1 gentlemen next Blanche activity next. 7 00:00:30,030 --> 00:00:32,370 And here don't change any finish. 8 00:00:32,400 --> 00:00:33,640 And then we can finish. 9 00:00:33,750 --> 00:00:36,130 OK everyone now just delete this. 10 00:00:36,170 --> 00:00:43,140 Hello to text you here and then double click on this arrest folder here lay out and then click on DoubleClick 11 00:00:43,210 --> 00:00:48,720 this activity underline I mean that example and then click on these floating action button here and 12 00:00:48,720 --> 00:00:50,640 then person Enter key on your keyboard. 13 00:00:50,640 --> 00:00:51,560 OK. 14 00:00:51,750 --> 00:00:55,010 So let's go back inside this content underline minute example. 15 00:00:55,380 --> 00:01:00,460 And now I want to actually drag in a linear layout vertical into this screen here. 16 00:01:00,510 --> 00:01:00,980 OK. 17 00:01:01,110 --> 00:01:07,470 So just to it in the center of the screen and then click on a relative lay out and let's actually find 18 00:01:07,500 --> 00:01:15,080 the padding attribute that is actually related to this relatively out and for the odd just putting numbers 19 00:01:15,080 --> 00:01:16,410 0 here. 20 00:01:17,100 --> 00:01:24,060 And as you can see now this linearly outwards the court is actually covering the entire screen OK the 21 00:01:24,060 --> 00:01:27,090 entire width and the entire height of the screen. 22 00:01:27,090 --> 00:01:27,480 OK. 23 00:01:27,510 --> 00:01:34,970 So now I want to actually dragging a linearly out horizontal into this linear out vertical. 24 00:01:35,430 --> 00:01:35,950 OK. 25 00:01:36,060 --> 00:01:36,600 OK. 26 00:01:36,600 --> 00:01:43,050 Now as you can see in this component 3 section as you can see here I have a linear layout horizontal 27 00:01:43,350 --> 00:01:45,760 inside this linear layout vertical. 28 00:01:45,760 --> 00:01:52,260 OK so now I want to actually put some components inside this linearly out horizontal. 29 00:01:52,480 --> 00:01:52,940 OK. 30 00:01:53,010 --> 00:01:53,630 OK. 31 00:01:53,640 --> 00:02:01,110 Now in order to actually drag a large text view into this linear layout horizontal I can just click 32 00:02:01,410 --> 00:02:07,820 on this large text view here and then you can just click on this linearly out horizontal here. 33 00:02:07,950 --> 00:02:08,420 OK. 34 00:02:08,490 --> 00:02:09,690 So as you can see here. 35 00:02:09,820 --> 00:02:16,070 Now these are large takes you this takes you actually inside this linearly out horizontal. 36 00:02:16,160 --> 00:02:16,840 OK. 37 00:02:17,070 --> 00:02:23,820 As you can see I can close and open this linearly out horizontal by just clicking on this little triangle 38 00:02:23,820 --> 00:02:24,260 here. 39 00:02:24,360 --> 00:02:24,990 OK. 40 00:02:25,140 --> 00:02:30,070 So this takes view is inside of these a linear layout horizontally. 41 00:02:30,090 --> 00:02:35,730 So now let's actually double click on this a large takes here and a four the text just type in here 42 00:02:35,880 --> 00:02:40,920 and healthy and for the ID are just type in here. 43 00:02:41,000 --> 00:02:42,750 XTi healthy. 44 00:02:42,810 --> 00:02:48,010 So now as you can see here I actually changed the text and the idea of this takes you. 45 00:02:48,390 --> 00:02:53,760 So now I want to actually tracking a checkbox into this linearly out horizontal OK. 46 00:02:53,760 --> 00:03:00,450 So let's actually find the checkbox here as you can see I have this checkbox component here. 47 00:03:00,450 --> 00:03:04,280 So now let's actually select this text box here. 48 00:03:04,620 --> 00:03:09,650 And then you can actually click on these linearly out horizontal. 49 00:03:09,660 --> 00:03:14,000 Or you can actually drag it here into these linearly or horizontal OK. 50 00:03:14,190 --> 00:03:18,590 So I just click on this linearly or horizontally here as you can see here. 51 00:03:18,590 --> 00:03:23,640 Now this checkbox is beside this am I help you text you. 52 00:03:23,730 --> 00:03:30,000 So because this is actually a linear layout and its orientation is horizontal is going to actually put 53 00:03:30,000 --> 00:03:32,360 the components beside each other. 54 00:03:32,640 --> 00:03:34,160 So hopefully that makes sense. 55 00:03:34,230 --> 00:03:40,190 And let's actually click on this checkbox here and for the text just type in here. 56 00:03:40,200 --> 00:03:40,880 Yes. 57 00:03:41,720 --> 00:03:46,040 And for the ID you can actually type in C H X.. 58 00:03:46,040 --> 00:03:50,160 This says it stands for checkbox c h X.. 59 00:03:50,210 --> 00:03:53,460 Healthy Yes C H x healthy yes. 60 00:03:54,080 --> 00:03:57,890 So now again it's actually dragging another checkbox here. 61 00:03:57,920 --> 00:04:05,790 So just click on this checkbox here and then again put it inside these linearly out horizontal. 62 00:04:05,960 --> 00:04:10,580 So just double click on the checkbox and for the text just type in here no. 63 00:04:10,910 --> 00:04:18,260 And for the ID just type in here see X healthy No. 64 00:04:18,830 --> 00:04:19,970 OK. 65 00:04:20,540 --> 00:04:27,490 So as you can see here I have a linearly or horizontal here and I have a text view here. 66 00:04:27,510 --> 00:04:28,610 Am I healthy. 67 00:04:29,300 --> 00:04:33,390 And I have these yes checkbox and these no checkbox here. 68 00:04:33,410 --> 00:04:33,850 OK. 69 00:04:33,920 --> 00:04:37,820 So let's actually click on this linearly and horizontal here. 70 00:04:38,120 --> 00:04:42,380 And let's actually find that gravity attributes as you can see. 71 00:04:42,380 --> 00:04:44,350 I have to lay out gravity. 72 00:04:44,480 --> 00:04:51,950 Ok this attribute is for the gravity of this linearly of itself and this attribute this gravity attribute 73 00:04:51,950 --> 00:04:57,060 here is actually for the gravity of the tides of this linearly out. 74 00:04:57,170 --> 00:05:01,700 These components are actually the children of this linearly. 75 00:05:01,880 --> 00:05:09,470 OK so now let's actually click on this linearly or horizontally and 4 and just opened this gravity attribute 76 00:05:09,800 --> 00:05:15,890 by actually clicking on this little triangle here and then check this a checkbox here that says Center 77 00:05:15,960 --> 00:05:17,410 underline horizontal. 78 00:05:17,420 --> 00:05:24,920 Now as you can see these components are actually positioned at the center of these linearly out. 79 00:05:24,980 --> 00:05:25,620 OK. 80 00:05:25,700 --> 00:05:27,390 So hopefully that makes sense. 81 00:05:27,410 --> 00:05:32,450 So this gravity attribute is for actually positioning your components inside the screen. 82 00:05:32,470 --> 00:05:39,180 OK so now let's actually go back inside this main activity of our file here and now let's actually delete 83 00:05:39,800 --> 00:05:47,000 these of these lines of code here and again they read these out lines of code that actually are related 84 00:05:47,660 --> 00:05:49,040 to the floating action button. 85 00:05:49,050 --> 00:05:54,060 And now I can actually put my own codes inside of this uncreate Meffert. 86 00:05:54,140 --> 00:05:54,740 OK. 87 00:05:54,740 --> 00:06:02,110 Now let's actually create a text view object here inside this uncreate if it takes to you. 88 00:06:02,540 --> 00:06:06,480 And for the name of this text you object just type in here T. 89 00:06:06,530 --> 00:06:08,520 XTi healthy. 90 00:06:09,280 --> 00:06:09,860 OK. 91 00:06:10,100 --> 00:06:13,190 And then put an assignment operator here. 92 00:06:13,580 --> 00:06:17,930 And now I need to actually cast this object to a text object. 93 00:06:17,930 --> 00:06:18,340 OK. 94 00:06:18,410 --> 00:06:24,250 Find you by I-T or that ID that t XTi healthy. 95 00:06:24,700 --> 00:06:33,580 OK so now let's actually create an object from this checkbox here checkbox class. 96 00:06:33,590 --> 00:06:36,880 So again I can just type in here checkbox. 97 00:06:37,220 --> 00:06:37,950 OK. 98 00:06:38,270 --> 00:06:41,330 So as you can see here I have a class called checkbox. 99 00:06:41,360 --> 00:06:45,720 So let's actually hold the common key and then click on this checkbox here. 100 00:06:45,890 --> 00:06:50,360 If you are using a Windows machine you need to actually hold the control key and then click on this 101 00:06:50,360 --> 00:06:52,010 checkbox OK. 102 00:06:52,310 --> 00:06:59,200 So as you can see here this checkbox class is actually extending this camp it this compound bottom class. 103 00:06:59,210 --> 00:07:06,110 So let's actually hold the command key and let's go inside this compound button and this compound button 104 00:07:06,110 --> 00:07:09,360 is actually extending this button class. 105 00:07:09,620 --> 00:07:10,300 OK. 106 00:07:10,670 --> 00:07:12,850 And this bottom class is actually extending. 107 00:07:12,890 --> 00:07:18,380 This takes your class and this takes three class is extending this view class. 108 00:07:18,440 --> 00:07:19,270 OK. 109 00:07:19,820 --> 00:07:21,420 So hopefully that makes sense. 110 00:07:22,920 --> 00:07:26,900 And let's actually close these classes that are actually opened. 111 00:07:27,200 --> 00:07:28,260 OK. 112 00:07:29,160 --> 00:07:33,780 So inside this main activity that Java as you can see I have a class called checkbooks. 113 00:07:33,780 --> 00:07:34,450 OK. 114 00:07:34,770 --> 00:07:38,160 So for the name of this object I can just type in C x. 115 00:07:38,190 --> 00:07:39,530 Healthy Yes. 116 00:07:40,380 --> 00:07:45,960 And then I put an assignment operator here and then I actually put in a pair of and brackets here in 117 00:07:45,960 --> 00:07:49,600 order to cast this object to a checkbox object. 118 00:07:49,620 --> 00:07:50,810 OK. 119 00:07:50,850 --> 00:07:56,250 Otherwise the compiler may finish that you're actually referring to to an object of type view. 120 00:07:56,560 --> 00:07:57,070 OK. 121 00:07:57,150 --> 00:08:03,930 So checkbox find view by ID or that Id dot see x. 122 00:08:04,200 --> 00:08:06,170 Healthy Yes. 123 00:08:06,870 --> 00:08:12,810 OK so now this object is actually fairly end to this component here. 124 00:08:12,810 --> 00:08:16,320 OK this checkbox that says yes. 125 00:08:16,320 --> 00:08:21,840 So let's actually create another checkbox for this checkbox component here. 126 00:08:21,870 --> 00:08:29,980 So again I can actually refer to the name of this checkbox class checkbox C H x healthy. 127 00:08:30,900 --> 00:08:31,770 No. 128 00:08:32,280 --> 00:08:33,070 OK. 129 00:08:33,090 --> 00:08:38,750 And then I put an assignment operator here and then inside a round brackets again. 130 00:08:38,760 --> 00:08:46,410 I can actually cast this object to the checkbox object and then I can just type in find view by ID or 131 00:08:46,500 --> 00:08:50,040 that Id dot see Edge x no. 132 00:08:50,360 --> 00:08:51,010 OK. 133 00:08:51,210 --> 00:08:52,580 So it's a healthy No. 134 00:08:52,680 --> 00:08:53,340 OK. 135 00:08:53,460 --> 00:08:57,540 And now let's actually run our project and see what happens. 136 00:08:57,740 --> 00:08:58,260 OK. 137 00:08:58,380 --> 00:08:59,010 OK. 138 00:08:59,040 --> 00:09:03,090 Now as you can see our application is actually running on this emulator here. 139 00:09:03,090 --> 00:09:03,560 OK. 140 00:09:03,750 --> 00:09:05,360 And this is our text you. 141 00:09:05,460 --> 00:09:06,440 Am I healthy. 142 00:09:06,750 --> 00:09:08,490 And these are two text boxes here. 143 00:09:08,490 --> 00:09:08,970 OK. 144 00:09:09,120 --> 00:09:11,680 Yes checkbox and no checkbox. 145 00:09:11,720 --> 00:09:17,490 OK so now we want to do something that whenever you are that I actually check one of these checkboxes 146 00:09:17,610 --> 00:09:20,410 the other checkbox be checked off OK. 147 00:09:20,490 --> 00:09:26,090 When I actually checked these are yes checkbox here I cannot check it is a no checkbox here too. 148 00:09:26,250 --> 00:09:26,820 OK. 149 00:09:27,060 --> 00:09:29,060 So let's actually do that. 150 00:09:29,160 --> 00:09:35,330 First of all I need to actually be fair to the name of this CSX Hellfires object here. 151 00:09:35,600 --> 00:09:35,950 OK. 152 00:09:35,970 --> 00:09:39,410 Now I can just refer to the name of this C H. 153 00:09:39,460 --> 00:09:48,410 Healthy Yes object that sets unclick listener new view that unclick listener. 154 00:09:48,420 --> 00:09:48,890 OK.