1

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So as you can see here first of all I created a boolean variable.



2

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True true true.



3

00:00:06,870 --> 00:00:09,750

And then I assigned this expression to our variable.



4

00:00:09,870 --> 00:00:14,750

So the result of this expression is going to be assigned to this variable OK.



5

00:00:15,090 --> 00:00:23,730

And here I am saying that if the value of this true and true Kadar true variable actually is true then



6

00:00:23,730 --> 00:00:27,170

execute this line of code here inside of this curly braces.



7

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Otherwise else if the value of this truth had a true value of N is not true.



8

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So it is false.



9

00:00:35,440 --> 00:00:36,760

Ok true.



10

00:00:36,780 --> 00:00:38,640

Khairat true.



11

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Then execute this line of code here checks.



12

00:00:42,140 --> 00:00:43,850

True true true.



13

00:00:43,860 --> 00:00:46,600

No that said checked.



14

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True.



15

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OK so now let's actually run our project and actually let's see what happens.



16

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So as you can see here the value of these two had a true expression is actually false.



17

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OK.



18

00:01:02,430 --> 00:01:09,990

The value of this value bet is false and onepoint are about expressions that actually uses it as an



19

00:01:09,990 --> 00:01:18,690

operator you need to know that this expression only produces a true value if only the values of the



20

00:01:18,690 --> 00:01:22,750

two sides of the expression are actually against each other.



21

00:01:22,800 --> 00:01:25,010

OK true false or false.



22

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True only in that case it's going to actually produce a true value.



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OK.



24

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In other cases such as these to try to True or false card is false.



25

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It can actually produce a false value.



26

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OK let me explain again.



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Are these expressions that actually uses the credit OPERATOR OK so for example we have a true value



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or.



29

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And we have a false value here.



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Or for example we have a false value here.



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And we have a true value here only in that case it can actually produce a true value.



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OK so that's very important and you need to know.



33

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So here as you can see because both sides of this expression actually has the value true.



34

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It's going to produce a false value.



35

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OK.



36

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So if the value of these true a true variable actually has the value to produce this line of code else



37

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if the value of this to try to true is natural.



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So it is worthless.



39

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Then execute this line of code here.



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OK.



41

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So as soon as you can see here this line of code is actually get executed and that is the result as



42

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you can see here.



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So let's actually comment out this if else statement here because I want to show you another art another



44

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way in order to write these statements so I can just type in here cx.



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00:02:45,860 --> 00:02:47,380

True.



46

00:02:48,080 --> 00:02:49,580

True yes.



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That said checked and then in say the parenthesis I can't just take control.



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And then inside the prentices I need to actually put in a pair of and brackets and then inside Apprentice's.



49

00:03:02,490 --> 00:03:07,170

I can just refer to the name of this variable to Chad it true.



50

00:03:07,560 --> 00:03:08,400

OK.



51

00:03:08,730 --> 00:03:09,730

Question mark.



52

00:03:09,780 --> 00:03:10,530

True.



53

00:03:11,210 --> 00:03:15,250

Otherwise Fahd's false.



54

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OK.



55

00:03:17,620 --> 00:03:20,310

And here again just typing in CSX.



56

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True.



57

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Carrott true.



58

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No that said checked.



59

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And here I need to put in a pair of round brackets and let's actually refer to the name of a variable.



60

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So first let's actually put in an exclamation mark.



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True true Carrott true.



62

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OK.



63

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Question mark.



64

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True otherwise false.



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So as you can see here now you're saying that if the value of these two capital variable is false then



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assigned a value to to this method to this set check if it is related to this object.



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Otherwise if the value of this had a true actually is true then assigned the value false to this is



68

00:04:13,890 --> 00:04:16,190

said check if that is related to this object.



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OK.



70

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So hopefully that makes sense.



71

00:04:19,540 --> 00:04:22,390

Let's actually run our project and see what happens.



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So as you can see here we have the same result here.



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OK.



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The value of this true true true value is false.



75

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Okay.



76

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So hopefully that makes sense.



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00:04:32,770 --> 00:04:37,510

And this let's actually go back and say this content on I mean that example and then there's actually



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00:04:37,550 --> 00:04:46,030

a drag and either linear out horizontally into this linearly out vertical and then let's actually aggregate



79

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a large takes you inside these are linearly out horizontal double click on it and then for the text



80

00:04:53,350 --> 00:04:58,650

just type in here true it's false.



81

00:04:59,140 --> 00:05:05,350

OK so remember in order to create this kind of OPERATOR You need to hold the shift key and then press



82

00:05:05,350 --> 00:05:07,620

on number six on your keyboard.



83

00:05:07,830 --> 00:05:08,650

OK.



84

00:05:08,830 --> 00:05:17,090

So press on until key on your keyboard and then let's actually drag in a checkbox into this or linearly



85

00:05:17,100 --> 00:05:21,380

out doubleclick on it for the text just typing here.



86

00:05:21,490 --> 00:05:23,110

Yes.



87

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And for the ID just type in here see X true Carrott true.



88

00:05:31,750 --> 00:05:32,550

Yes.



89

00:05:33,790 --> 00:05:41,300

OK and let's actually write another checkbox beside this tick box here double click on it for the text.



90

00:05:41,320 --> 00:05:42,740

Just type in here no.



91

00:05:43,000 --> 00:05:46,170

And for the ID just type in it x true.



92

00:05:46,510 --> 00:05:48,320

Chad it follows.



93

00:05:48,730 --> 00:05:49,420

No.



94

00:05:49,810 --> 00:05:50,330

OK.



95

00:05:50,400 --> 00:05:51,260

OK.



96

00:05:51,430 --> 00:05:55,540

Now let's actually try again a checkbox here into this linear layout.



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00:05:55,540 --> 00:05:56,370

Horizontal.



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00:05:56,530 --> 00:06:02,660

So just click on this checkbox here and then put it beside this takes you and double click on this checkbox.



99

00:06:02,680 --> 00:06:05,710

So the text of the search box just type in here yes.



100

00:06:05,830 --> 00:06:10,800

And for the ID just type in C it takes two Carrott false.



101

00:06:11,150 --> 00:06:16,560

Yes let's actually dragon another take walks here beside this checkbox.



102

00:06:16,870 --> 00:06:20,040

Double click on it for the text just type in no.



103

00:06:20,230 --> 00:06:27,920

And for the ID just type in situ X true Carrott false no.



104

00:06:28,410 --> 00:06:29,220

OK.



105

00:06:29,500 --> 00:06:35,500

And then click on this linearly and horizontal and then check the second box center on the other line



106

00:06:35,500 --> 00:06:36,430

horizontal.



107

00:06:36,610 --> 00:06:40,550

That is actually related to square the attributes.



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00:06:40,630 --> 00:06:46,660

So let's go back inside it inside this main activity that Josephite here and let's actually scroll to



109

00:06:46,660 --> 00:06:55,630

the top of the screen here and then let's actually create a comment true carrot false.



110

00:06:55,640 --> 00:07:00,960

Ok so now let's actually create a checkbox object Synaptics true.



111

00:07:01,610 --> 00:07:04,030

Callid false.



112

00:07:04,030 --> 00:07:04,980

Yes.



113

00:07:05,050 --> 00:07:10,720

Assignment operator so analysis actually cast this object to a checkbox object.



114

00:07:10,870 --> 00:07:16,630

Find you by id r that Id dot c it takes true carrot.



115

00:07:16,880 --> 00:07:19,030

False Yes.



116

00:07:19,500 --> 00:07:20,060

OK.



117

00:07:20,440 --> 00:07:32,470

And then actually create another checkbox object theoretics true it false no ok assignment operator



118

00:07:32,890 --> 00:07:41,560

and let's actually cast this object to a text box object find you by ID or that Id dot see if checks



119

00:07:42,310 --> 00:07:47,080

are true that are false.



120

00:07:47,080 --> 00:07:47,690

No.



121

00:07:47,950 --> 00:07:48,860

OK.



122

00:07:49,270 --> 00:07:51,070

So hopefully that makes sense.



123

00:07:51,070 --> 00:07:53,600

Let's scroll down the file here.



124

00:07:53,950 --> 00:07:59,610

And let's actually again create a comment to try to add fonts.



125

00:08:00,030 --> 00:08:06,370

OK so now let's actually create a boolean variable and the name of this boolean value but is true Carrott



126

00:08:07,630 --> 00:08:10,210

false assignment operator.



127

00:08:10,300 --> 00:08:14,510

And then I want to actually create a boolean expression here true.



128

00:08:14,950 --> 00:08:16,960

Chad it's false.



129

00:08:17,320 --> 00:08:18,080

OK.



130

00:08:18,640 --> 00:08:22,110

So as you can see here I created a boolean expression here.



131

00:08:22,120 --> 00:08:26,440

Now the result of this expression is going to be assigned to this boolean value.



132

00:08:26,540 --> 00:08:30,310

OK so now let's create an if statement here.



133

00:08:30,340 --> 00:08:39,130

If the value of these two carat falls valuable is actually true then execute this line of code here



134

00:08:39,390 --> 00:08:42,830

checks true carat false.



135

00:08:43,300 --> 00:08:45,530

Yes that said check it.



136

00:08:45,580 --> 00:08:46,620

True.



137

00:08:47,110 --> 00:08:47,780

OK.



138

00:08:48,040 --> 00:08:54,630

Otherwise else if the value of these two had falls valuable is not true.



139

00:08:54,730 --> 00:08:55,590

So it is false.



140

00:08:55,600 --> 00:08:56,010

OK.



141

00:08:56,060 --> 00:09:05,590

Else if the value of these two Carrott false is not true then execute this line of quote here zero checks



142

00:09:05,620 --> 00:09:09,960

to create false no data set.



143

00:09:09,980 --> 00:09:11,590

Check it.



144

00:09:11,590 --> 00:09:12,890

True.



145

00:09:12,930 --> 00:09:17,580

OK so now let's actually run our project and see what happens.



146

00:09:17,590 --> 00:09:17,910

OK.



147

00:09:17,920 --> 00:09:24,400

As you can see here now the value of these two Carrott falls variable is actually true.



148

00:09:24,460 --> 00:09:30,490

As I said before as you can see we are using a carrot operator here in this expression and in order



149

00:09:30,490 --> 00:09:37,180

that this expression evaluates to true the value of the two sides of the expression must be against



150

00:09:37,240 --> 00:09:37,720

each other.



151

00:09:37,720 --> 00:09:38,130

OK.



152

00:09:38,200 --> 00:09:43,080

So for example true is against the false and false is against true.



153

00:09:43,090 --> 00:09:49,200

So the value of one side of the expression must be against the value of the other side of the expression.



154

00:09:49,210 --> 00:09:54,560

So as you can see here we've got a true value here and we've got a false value here.



155

00:09:54,580 --> 00:09:57,580

So these two values are all against each other.



156

00:09:57,700 --> 00:10:00,190

So it's going to actually produce a true value.



157

00:10:00,400 --> 00:10:00,920

OK.