1 00:00:00,660 --> 00:00:10,620 Let's actually create again or create a comment OK Fox or Fox and then let's actually create a boolean 2 00:00:10,630 --> 00:00:18,920 valuable so boolean false or false assignment operator. 3 00:00:19,140 --> 00:00:26,690 Now let's actually create a boolean expression here false or false. 4 00:00:27,130 --> 00:00:31,600 OK and then let's actually create an if statement here. 5 00:00:31,620 --> 00:00:37,290 If the value of this false or false variable is true. 6 00:00:37,770 --> 00:00:44,100 OK if the value that is assigned to the is false or false variable is true then execute this line of 7 00:00:44,100 --> 00:00:46,680 code inside these curly braces of these. 8 00:00:46,860 --> 00:00:48,030 Of this IIF statement. 9 00:00:48,040 --> 00:00:48,520 OK. 10 00:00:48,570 --> 00:00:56,670 So if the value of this false or false variable is true then execute this line of code here checks false 11 00:00:57,090 --> 00:00:58,780 or false. 12 00:00:59,040 --> 00:01:02,240 Yes that said checked. 13 00:01:02,370 --> 00:01:03,180 True. 14 00:01:03,770 --> 00:01:04,160 OK. 15 00:01:04,170 --> 00:01:11,440 Otherwise else if the value of this false or false variable is false. 16 00:01:11,930 --> 00:01:15,330 OK so we need to put an exclamation mark here. 17 00:01:15,840 --> 00:01:21,160 If the value of these false or false variable is false. 18 00:01:21,420 --> 00:01:28,200 OK we put these exclamation marks here in order in order to negate the value of this variable. 19 00:01:28,200 --> 00:01:28,790 OK. 20 00:01:29,220 --> 00:01:37,960 So if the value of this variable is false so execute this line of code inside of these curly braces 21 00:01:38,240 --> 00:01:40,590 X Files or false. 22 00:01:40,590 --> 00:01:43,240 No that said checked. 23 00:01:43,350 --> 00:01:44,450 True. 24 00:01:45,170 --> 00:01:50,140 OK so now let's actually run our project and see the results. 25 00:01:50,190 --> 00:01:57,540 So as you can see here the value of this false or false variable is actually false because there's no 26 00:01:57,540 --> 00:01:59,570 checkbox is actually checked on. 27 00:01:59,610 --> 00:02:00,220 OK. 28 00:02:00,600 --> 00:02:04,240 So the value of this checkbox is actually true. 29 00:02:04,260 --> 00:02:08,640 So here we actually created a variable called false or false. 30 00:02:08,700 --> 00:02:12,870 And then we assigned this expression to our variable funds or false. 31 00:02:12,870 --> 00:02:16,820 So the result of this expression is actually assigned to this variable. 32 00:02:17,040 --> 00:02:24,950 And here we checked if the value of this false or false value bet is actually true then execute this 33 00:02:24,960 --> 00:02:26,070 line of code here. 34 00:02:26,130 --> 00:02:29,340 So our C-h x false or false. 35 00:02:29,430 --> 00:02:30,140 Yes. 36 00:02:30,150 --> 00:02:34,470 Which is actually related to this component to this checkbox that said check. 37 00:02:34,480 --> 00:02:41,020 True if the value of these false or false variable is true then actually check this checkbox here. 38 00:02:41,020 --> 00:02:48,420 Otherwise if the value of this false or false variable is actually false then execute this line of code 39 00:02:48,420 --> 00:02:48,860 here. 40 00:02:48,980 --> 00:02:51,910 C-h x false or false no. 41 00:02:52,050 --> 00:02:55,530 Which is related to this checkbox that said checked too. 42 00:02:55,830 --> 00:02:59,740 So as you can see here the value of this checkbox is actually true. 43 00:02:59,940 --> 00:03:02,460 OK this checkbox is checked on. 44 00:03:02,610 --> 00:03:03,320 OK. 45 00:03:03,630 --> 00:03:10,990 So let's again actually comment out this if else statement here and here we can't just type in C-h x 46 00:03:11,400 --> 00:03:13,870 false or false. 47 00:03:14,040 --> 00:03:14,640 Yes. 48 00:03:14,670 --> 00:03:16,540 That said check it. 49 00:03:16,710 --> 00:03:22,910 And here I can just put in a pair of round brackets and then again just refer to the name of this variable 50 00:03:22,920 --> 00:03:25,110 false or false. 51 00:03:25,570 --> 00:03:31,190 OK question mark true Colan false. 52 00:03:31,620 --> 00:03:31,890 OK. 53 00:03:31,900 --> 00:03:39,560 And this means if the value of this false or false variable is actually true then assign the value true 54 00:03:39,580 --> 00:03:42,580 to this C-h x false or false. 55 00:03:42,580 --> 00:03:43,950 Yes. 56 00:03:44,140 --> 00:03:48,940 Otherwise assign the value false to what is said checked method that is related to this object. 57 00:03:48,940 --> 00:03:49,910 OK. 58 00:03:50,440 --> 00:03:54,610 Again I can't just type in checks false or false. 59 00:03:54,610 --> 00:03:55,080 No. 60 00:03:55,110 --> 00:03:56,910 That said check it. 61 00:03:57,190 --> 00:04:03,490 And here I can't just put in a pair of round brackets and inside Apprentice's I need to put in an exclamation 62 00:04:03,490 --> 00:04:08,570 mark fonts or fonts. 63 00:04:09,490 --> 00:04:10,570 OK question mark. 64 00:04:10,580 --> 00:04:14,510 True otherwise false. 65 00:04:15,670 --> 00:04:22,630 So here I am just saying that if the value of these false or false value is actually false then assign 66 00:04:22,630 --> 00:04:27,820 the value true to this method which is actually related to this object. 67 00:04:27,880 --> 00:04:33,470 Otherwise assign the value false to this said checked Mefford that is related to this. 68 00:04:33,490 --> 00:04:35,630 See it's a false or false no object. 69 00:04:35,650 --> 00:04:36,270 OK. 70 00:04:36,490 --> 00:04:44,800 If the value of these are false or false value is actually true assign the value false to this object. 71 00:04:44,950 --> 00:04:48,810 So it is actually on our project again and see the results again. 72 00:04:49,180 --> 00:04:57,790 So as you can see here false or false as you can see the value of this false or false value is no actually 73 00:04:57,790 --> 00:04:58,770 is false. 74 00:04:58,780 --> 00:04:59,430 OK. 75 00:04:59,800 --> 00:05:02,900 This checkbox this no check box is actually checked on. 76 00:05:02,920 --> 00:05:06,810 This is the result of execution of this line of code here. 77 00:05:06,820 --> 00:05:07,380 OK. 78 00:05:07,600 --> 00:05:12,490 Because the value of this false or false value is actually false. 79 00:05:12,520 --> 00:05:16,470 So it is actually assigning the value true to this check box here. 80 00:05:16,550 --> 00:05:17,480 OK. 81 00:05:17,710 --> 00:05:19,710 So hopefully that makes sense. 82 00:05:20,080 --> 00:05:24,450 And let's actually go back go inside this content underline minute example. 83 00:05:25,000 --> 00:05:30,400 And by the way if you have any questions regarding these concepts that they actually that I am actually 84 00:05:30,400 --> 00:05:36,160 teaching you are make sure that you actually posted discussion in the course or you can actually Message 85 00:05:36,160 --> 00:05:41,060 me directly and I'll do my best to answer your questions. 86 00:05:41,080 --> 00:05:41,750 OK. 87 00:05:42,130 --> 00:05:45,010 So let's actually close this linearly out horizontal. 88 00:05:45,160 --> 00:05:51,410 Let's actually track and order linearly out horizontally into this linearly outwards. 89 00:05:51,700 --> 00:05:58,810 So just click on this linearly or horizontally and then you can just put it inside this linearly out 90 00:05:58,810 --> 00:06:00,000 vertical here. 91 00:06:00,010 --> 00:06:03,820 Write a large text view into this linearly and horizontal. 92 00:06:03,820 --> 00:06:06,850 So you can either put it here or you can actually. 93 00:06:06,880 --> 00:06:12,970 So you can either put it inside this linearly out here inside the screen or you can actually put it 94 00:06:12,970 --> 00:06:13,500 here. 95 00:06:13,710 --> 00:06:13,960 OK. 96 00:06:13,960 --> 00:06:17,260 Inside these are componentry as you can see here. 97 00:06:17,350 --> 00:06:18,330 OK. 98 00:06:18,970 --> 00:06:25,690 So let's actually double click on this text view here and then let's actually give our text to this 99 00:06:25,690 --> 00:06:26,610 text view. 100 00:06:26,920 --> 00:06:28,240 So just type in here. 101 00:06:28,260 --> 00:06:31,750 True carrot operator. 102 00:06:31,790 --> 00:06:32,990 True. 103 00:06:33,880 --> 00:06:34,370 OK. 104 00:06:34,420 --> 00:06:41,660 And let's actually track another checkbox into this linearly out horizontal. 105 00:06:42,130 --> 00:06:46,330 Double click on this checkbox for the text just type in here yes. 106 00:06:46,570 --> 00:06:53,790 And for the ID just type in here C-h X through it's true. 107 00:06:54,580 --> 00:06:55,270 Yes. 108 00:06:55,390 --> 00:06:56,120 OK. 109 00:06:56,440 --> 00:07:00,220 Again let's actually write another checkbox into this linearly out. 110 00:07:00,280 --> 00:07:05,230 Double click on it for the text just typing no for the ID just type in here. 111 00:07:05,320 --> 00:07:07,300 See it checks through. 112 00:07:07,690 --> 00:07:10,370 Chad it true. 113 00:07:10,750 --> 00:07:12,230 No. 114 00:07:13,210 --> 00:07:21,310 And let's actually click click on this linear layout and here check this checkbox of this center underline 115 00:07:21,310 --> 00:07:25,060 horizontal that is related to the script gravity attribute. 116 00:07:25,060 --> 00:07:25,930 OK. 117 00:07:26,470 --> 00:07:27,890 So check this checkbox. 118 00:07:27,910 --> 00:07:33,150 And as you can see these components are actually positioned at the center of this linearly. 119 00:07:33,160 --> 00:07:33,930 OK. 120 00:07:34,240 --> 00:07:35,700 So hopefully that makes sense. 121 00:07:35,830 --> 00:07:36,400 OK. 122 00:07:36,430 --> 00:07:40,780 Now let's actually go back inside this main activity that java file here. 123 00:07:40,960 --> 00:07:43,330 And let's actually scroll to the top of the screen. 124 00:07:44,080 --> 00:07:48,250 And here they actually create a comment. 125 00:07:48,460 --> 00:07:49,090 OK. 126 00:07:49,220 --> 00:07:50,990 True Chad. 127 00:07:51,010 --> 00:07:58,270 Operator OK remember to hold the shift key and then press and number 6 on your keyboard in order to 128 00:07:58,270 --> 00:07:59,560 actually create a card. 129 00:07:59,560 --> 00:08:00,910 OPERATOR OK. 130 00:08:00,910 --> 00:08:01,660 So true. 131 00:08:01,720 --> 00:08:02,290 Operator. 132 00:08:02,290 --> 00:08:03,480 True. 133 00:08:03,650 --> 00:08:07,490 Let's actually create a checkbox object to see x. 134 00:08:07,690 --> 00:08:11,320 True Carrott true. 135 00:08:11,660 --> 00:08:23,860 Assignment operator check box find view by ID or that Id dot C-h X true charites true. 136 00:08:23,890 --> 00:08:34,540 Yes and I forgot to put vote yes here at the end of my checkbox object name it's actually create another 137 00:08:34,540 --> 00:08:35,650 checkbox object here. 138 00:08:35,650 --> 00:08:43,730 Checkbooks see objects are two Carrott true. 139 00:08:44,230 --> 00:08:51,970 No assignment operator checkbox find view by ID or dot ID dot. 140 00:08:52,120 --> 00:08:55,250 See it checks to charity. 141 00:08:55,570 --> 00:08:56,850 True no. 142 00:08:57,260 --> 00:08:58,350 OK. 143 00:08:58,600 --> 00:09:00,700 So hopefully that makes sense. 144 00:09:01,180 --> 00:09:05,130 And let's actually scroll down the file here. 145 00:09:05,770 --> 00:09:11,670 And then this actually creates another comment to that operator. 146 00:09:11,800 --> 00:09:12,840 True. 147 00:09:13,430 --> 00:09:14,440 OK everyone. 148 00:09:14,440 --> 00:09:24,010 Now I can actually create a boolean variable and the name of this boolean variable is true CEdit true. 149 00:09:24,470 --> 00:09:24,960 OK. 150 00:09:25,080 --> 00:09:30,610 Assignment operator and then I would actually assign a boolean expression to this variable. 151 00:09:30,610 --> 00:09:30,950 OK. 152 00:09:30,970 --> 00:09:37,180 Now I can actually assign a boolean expression to this variable so I can just put in a pair of round 153 00:09:37,180 --> 00:09:44,230 brackets and then I can just type in here to carry true. 154 00:09:44,870 --> 00:09:50,320 OK and then I need to actually put in a semi-colon at the end of our statement. 155 00:09:50,350 --> 00:09:57,800 OK so now let's actually create of an IF statement here if true. 156 00:09:58,270 --> 00:10:06,880 It's true has the value true then execute this line of code inside of these curly braces OK. 157 00:10:06,960 --> 00:10:09,720 See it checks to try it. 158 00:10:09,720 --> 00:10:10,970 True yes. 159 00:10:11,040 --> 00:10:13,120 That said check it. 160 00:10:13,150 --> 00:10:16,420 True OK.