1

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So now let's actually go to our activity and linemen that examined here.



2

00:00:04,800 --> 00:00:08,640

And now let's actually add some more user interface components here.



3

00:00:08,880 --> 00:00:15,120

So now if I show you the other web browser here as you can see here we have the vote to actually get



4

00:00:15,120 --> 00:00:16,630

the value of this child.



5

00:00:16,650 --> 00:00:17,140

Right.



6

00:00:17,280 --> 00:00:23,180

So let's actually create a text view for this child here and now let's go back to our Android studio.



7

00:00:23,190 --> 00:00:28,480

So let me actually get this takes you here and put it here inside this linearly elsewheres the call



8

00:00:28,680 --> 00:00:30,450

and below the spot in here.



9

00:00:30,480 --> 00:00:31,030

Right.



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00:00:31,180 --> 00:00:40,490

And now for the ID just a pin here to 60 child value and then present interviewee on your keyboard.



11

00:00:40,830 --> 00:00:44,340

And now let's actually drag a button here.



12

00:00:44,640 --> 00:00:47,450

As you can see inside it's widgets folder we have this button.



13

00:00:47,490 --> 00:00:55,370

So just drag it and put it here below this takes view and for the I-T just tape in here between B.T.



14

00:00:55,500 --> 00:01:03,780

and get child value right BT and get child value and that person until you're on your keyboard.



15

00:01:03,780 --> 00:01:14,580

And for the text attributes of this button to step in here get child value and that person Enter key



16

00:01:14,580 --> 00:01:15,910

on your keyboard.



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00:01:16,650 --> 00:01:19,950

And now let me actually show you their web browser here.



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So as you can see here we have this key and we have this value right.



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00:01:24,480 --> 00:01:28,110

So let's also create another takes and another button for this.



20

00:01:28,230 --> 00:01:29,490

A key value here.



21

00:01:29,670 --> 00:01:31,670

So let's go back to our Android studio.



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00:01:31,770 --> 00:01:37,650

Inside these widgets folder just selectees takes you here and put it here inside this linearly vertical



23

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and below the Spartan.



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And now for the idea just step in here takes the computer takes the computer name and for the text attribute



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just typing in here just deletes this right here.



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00:01:57,260 --> 00:01:58,320

Right.



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00:01:58,410 --> 00:02:05,060

And this Atlas also selectees takes you here and read the text of this or actually takes you.



28

00:02:05,120 --> 00:02:08,960

And now as you can see if you have this takes you here right.



29

00:02:08,960 --> 00:02:10,350

Takes the computer name.



30

00:02:10,440 --> 00:02:12,430

So let's actually do like a button here.



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Inside the switch it's for.



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Just select it and put it here inside this linearly or two vertical and below these takes you.



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Now for the ID just type in here between jet computer name the computer name and that person into your



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keyboard.



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And for the text attribute to step in here gets a computer name enter and then.



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Here let me show you the web browser as you can see we have also this Keeble you hear more widening.



37

00:02:43,830 --> 00:02:46,020

So let's actually go back to android studio.



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00:02:46,110 --> 00:02:51,860

Let's actually select this takes here inside this vitiates folder and put it here below this button.



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00:02:52,190 --> 00:03:01,980

And now for the Id just say in here to the ATX demobilised name and that person into on your keyboard



40

00:03:02,370 --> 00:03:09,330

and deletes that the text attributes as you can see that it does takes here and now let's actually write



41

00:03:09,390 --> 00:03:10,220

about it here.



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00:03:10,230 --> 00:03:14,580

As you can see in say this with its There's just put it here below this text view.



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00:03:14,820 --> 00:03:23,700

And for the ID just step in here between get more by learning more by name and then it's actually just



44

00:03:24,150 --> 00:03:26,100

for the text attribute of this button.



45

00:03:26,100 --> 00:03:35,030

Just type in here get more byde name and in person entelechy on your keyboard.



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00:03:35,120 --> 00:03:43,820

So an analyst actually wrote our project in order to show you actually the face of our application and



47

00:03:43,850 --> 00:03:47,500

now as you can see here this is our emulator.



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00:03:47,630 --> 00:03:53,870

So we added these to these three buttons get child value get computer names get more by name and we



49

00:03:53,870 --> 00:03:55,480

have also free takes views.



50

00:03:55,580 --> 00:03:58,180

But we can see those values here yet.



51

00:03:58,190 --> 00:04:04,720

So let's actually go back to our main activity the double file here and now inside the uncreate Smurfette.



52

00:04:04,790 --> 00:04:10,940

So before the end in curly brace of this uncreate Smurfit as you can see here now as you can see this



53

00:04:10,940 --> 00:04:12,420

is our uncreate method right.



54

00:04:12,530 --> 00:04:19,460

So before the Indian curly brace of this uncreate Smurfit I can actually declare those objects right.



55

00:04:19,460 --> 00:04:26,540

First of all as you can see inside the emulator we have actually this high value button and we have



56

00:04:26,540 --> 00:04:28,210

also a text view.



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00:04:28,220 --> 00:04:36,620

So let's actually first of all create the text you so text view the child assignment operator and then



58

00:04:36,620 --> 00:04:44,510

I need to cast this object to actually a text view object find view by ID or that ID that takes the



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00:04:44,690 --> 00:04:46,860

child as you can see here.



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00:04:46,970 --> 00:04:47,370

Right.



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00:04:47,390 --> 00:04:52,420

Takes the child by you and then put a semi-colon at the end at the end of your statement.



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00:04:52,730 --> 00:04:56,650

And now as you can see we have also the spot in good child value.



63

00:04:56,750 --> 00:04:58,390

So let's create a button here.



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00:04:58,400 --> 00:05:06,530

So pattern between child assignment operator and then it's actually cestus object to about an object



65

00:05:06,900 --> 00:05:14,870

find view by ID or that ID that Pythian child as you can see here between a child value added with a



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semicolon at the end of your statement.



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00:05:18,220 --> 00:05:25,200

Now as you can see here we have these kids computer name so let's actually first of all create the text.



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00:05:25,240 --> 00:05:32,850

So it takes few takes the computer name takes the computer name and an assignment operator.



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00:05:32,990 --> 00:05:39,430

And here it is like let's actually cast this object to our tastes view object find view by ID or that



70

00:05:39,530 --> 00:05:46,370

ID that takes the computer name and then put a semi-colon at the end of your statement.



71

00:05:46,370 --> 00:05:48,790

And here as you can see we have this button right.



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00:05:48,890 --> 00:05:57,850

Computer Name so button Pythian computer name between a computer and an assignment operator.



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00:05:57,980 --> 00:06:08,570

And now let's actually cast this object to a button object find view by ID or that Id dot PTEN computer



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00:06:08,600 --> 00:06:13,140

name and get computer name and then put a semicolon at the end of your statement.



75

00:06:13,340 --> 00:06:16,140

And we have also a text for this by name.



76

00:06:16,190 --> 00:06:20,640

So takes few takes the more widely.



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00:06:20,860 --> 00:06:23,550

Well when the assignment operator.



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00:06:23,660 --> 00:06:31,010

And now let's actually test this object to our test view object find the ID r that ID that takes the



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00:06:31,310 --> 00:06:36,240

more by name and then put a semi-colon at the end of your statement.



80

00:06:36,270 --> 00:06:41,470

And now let's let's actually create an object for this button gets mobiling.



81

00:06:41,630 --> 00:06:49,190

So button between Moabite the assignment operator.



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00:06:49,340 --> 00:06:51,900

Now let's actually test this object to a button object.



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00:06:52,000 --> 00:06:59,590

Find your way id or that ID that PTEN more by you get more by name and then put a semicolon at the end



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00:06:59,590 --> 00:07:00,690

of your statement.



85

00:07:00,700 --> 00:07:05,850

So now let's actually create a listener for the spot in between and child.



86

00:07:05,860 --> 00:07:13,670

So here I can say PTEN child that said unclick listener new view.



87

00:07:13,690 --> 00:07:19,390

So just put a capital V here and then the auto companies feature of Android studio Studio is going to



88

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actually help you to choose this option onco like this and then press an interview on your keyboard.



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00:07:24,800 --> 00:07:26,660

And now inside is unclear to me.



90

00:07:26,970 --> 00:07:28,950

I can't put my own logic here.



91

00:07:29,110 --> 00:07:35,110

So now first of all I want to actually get sooner let me show you the web browser I want to actually



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00:07:35,110 --> 00:07:37,090

get the value of this child.



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00:07:37,150 --> 00:07:37,560

Right.



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00:07:37,660 --> 00:07:41,170

But as you can see here first of all we have this category Diski.



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00:07:41,410 --> 00:07:47,710

So first I have to get the reference to the key to this category and then I can actually get a reference



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00:07:47,710 --> 00:07:49,000

to this child.



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00:07:49,090 --> 00:07:52,400

And after that I can actually get the value of this choice.



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00:07:52,630 --> 00:07:55,310

So first we need a reference to this category.



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00:07:55,420 --> 00:07:56,850

So let's do that here.



100

00:07:57,160 --> 00:08:04,780

So here I can just say for example firebase database thought Get reference.



101

00:08:04,820 --> 00:08:07,720

So now let's actually open our web browser as it kids here.



102

00:08:07,730 --> 00:08:09,800

First we need to get this right.



103

00:08:09,800 --> 00:08:11,730

First we need to get other friends to Diski.



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00:08:11,900 --> 00:08:16,930

So let's actually copy this key here just like let's click on it and then click on copy.



105

00:08:17,300 --> 00:08:21,900

Let's go back to what I understood you and instead of double quotes just paste that disvalue.



106

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And now we can actually access the child.



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00:08:25,310 --> 00:08:28,410

So here I can say that child.



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00:08:28,670 --> 00:08:33,430

And then inside the double quotes as you can see here I can actually put the key which is actually the



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00:08:33,430 --> 00:08:38,570

child so just highlighted and then right click on it and then just click on.



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00:08:38,570 --> 00:08:39,510

Copy.



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00:08:39,560 --> 00:08:45,080

Let's actually go back to and read through and paste this value so now that it actually successfully



112

00:08:45,080 --> 00:08:47,570

accessed the child of this key.



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00:08:47,900 --> 00:08:51,900

So I put this value to the key here as the child.



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00:08:52,250 --> 00:08:53,900

And then I can access this by you.



115

00:08:54,080 --> 00:08:55,940

And here I can see that.



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00:08:55,970 --> 00:09:02,300

And now I need to actually create actually an add value listener here in order to see whether this value



117

00:09:02,300 --> 00:09:03,260

is changed or not.



118

00:09:03,260 --> 00:09:08,890

Or we can actually get the value of that key here and say Dot add value listener.



119

00:09:08,990 --> 00:09:15,360

So first let's actually create a new line here so that you can see these values that add the radio listener.



120

00:09:15,650 --> 00:09:17,480

And here I can see new.



121

00:09:17,600 --> 00:09:22,890

And then just hold the shift key on your keyboard and then present the reader the key on your keyboard.



122

00:09:22,890 --> 00:09:27,320

And now the autocomplete feature of the Android studio is going to help you to choose this option and



123

00:09:27,320 --> 00:09:30,010

that person and until key on your keyboard.



124

00:09:30,140 --> 00:09:34,480

And finally we need to actually put a semicolon after this and prentices.



125

00:09:34,810 --> 00:09:37,140

So insert this update or change method.



126

00:09:37,310 --> 00:09:39,350

We can actually put our own logic here.



127

00:09:39,440 --> 00:09:40,090

Right.



128

00:09:40,130 --> 00:09:47,420

So this is going to be called an effort that you actually change the value of this key.



129

00:09:47,600 --> 00:09:48,320

Right.



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00:09:48,350 --> 00:09:53,300

So here we can actually get these values because this value is actually a string value as you can see



131

00:09:53,300 --> 00:09:54,780

here instead of double quotes.



132

00:09:54,830 --> 00:09:56,730

We can actually create a single variable.



133

00:09:56,840 --> 00:10:01,200

So I think we can see a string value assignment operator.



134

00:10:01,590 --> 00:10:05,280

So now let me actually just put the right name here.



135

00:10:05,330 --> 00:10:07,690

So string value.



136

00:10:07,780 --> 00:10:14,990

And now I can't say it I can't say data snapshot DOT gets value semicolon.



137

00:10:14,990 --> 00:10:19,340

And inside the parenthesis as you can see here as I said get key.



138

00:10:19,380 --> 00:10:20,840

We can also get the key.



139

00:10:20,930 --> 00:10:23,170

But here we want to actually get the value.



140

00:10:23,300 --> 00:10:25,080

So get value.



141

00:10:25,580 --> 00:10:32,150

And inside the parenthesis because we need to actually specify the data type of the value that we want



142

00:10:32,150 --> 00:10:38,270

to get from the set from the server when inside the prentices we need to specify the data types in that



143

00:10:38,270 --> 00:10:40,190

class.



144

00:10:40,190 --> 00:10:46,320

And here I can say he asks the child that said text value.



145

00:10:46,360 --> 00:10:49,350

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



146

00:10:51,460 --> 00:10:55,410

And now let me show you the web browser and let me show you the emulator.



147

00:10:55,630 --> 00:11:00,200

So now as you can see here our application is actually running on this emulator.



148

00:11:00,220 --> 00:11:04,550

So now let's actually click on the Spartan get child value.



149

00:11:05,200 --> 00:11:08,360

And now here as you can see it says value right.



150

00:11:08,380 --> 00:11:10,430

We are getting the value of this child.



151

00:11:10,540 --> 00:11:12,710

So let's actually change this value to another value.



152

00:11:12,710 --> 00:11:24,290

Here we can say my own my own value here and in person in the your keyboard.



153

00:11:24,520 --> 00:11:30,670

As you can see I changed the value of this child and now you can see this value here also my own value



154

00:11:30,670 --> 00:11:31,380

here.



155

00:11:31,600 --> 00:11:32,380

Right.



156

00:11:32,410 --> 00:11:41,120

So if you successfully got this value and now let's actually go back to our Android studio so now let's



157

00:11:41,120 --> 00:11:43,910

actually go inside this uncreate method as you can see here.



158

00:11:43,910 --> 00:11:46,410

This is the end in calibrates of this uncreate method.



159

00:11:46,450 --> 00:11:46,970

Right.



160

00:11:47,180 --> 00:11:49,860

And this is the end in curly brace of this class.



161

00:11:49,880 --> 00:11:54,950

So before the end in curly brace of this uncreate Befort and inside is uncreate perfect.



162

00:11:55,010 --> 00:11:58,140

Let's create a listener for this button as you can see here.



163

00:11:58,280 --> 00:11:59,340

Good computer name.



164

00:11:59,510 --> 00:12:04,960

So now if I actually show you this web browser here as you can see we have computer named Mac Pro.



165

00:12:05,120 --> 00:12:08,430

So I want to actually get this Mac Pro here.



166

00:12:08,520 --> 00:12:17,930

So now let's create a listener so PTEN computer name that sits on click click listener new view that



167

00:12:17,990 --> 00:12:18,960

unclick listener.



168

00:12:19,190 --> 00:12:20,730

And now inside is Uncle Comerford.



169

00:12:20,750 --> 00:12:22,420

I can't say that.



170

00:12:22,610 --> 00:12:26,240

Let's actually create a reference to this computer name.



171

00:12:26,300 --> 00:12:30,630

So here I can say firebase database that gets reference friends.



172

00:12:30,650 --> 00:12:34,070

So instead of double quotes I can't specify the reference.



173

00:12:34,130 --> 00:12:36,070

So the reference is going to be disvalue.



174

00:12:36,080 --> 00:12:38,030

So let's actually copy this value here.



175

00:12:38,030 --> 00:12:39,700

Computer Name.



176

00:12:39,810 --> 00:12:42,620

So right click on it and then click on copy.



177

00:12:43,130 --> 00:12:47,810

And let's actually go to the Android studio and inside the double quotes you can actually paste this



178

00:12:47,810 --> 00:12:48,620

value.



179

00:12:48,860 --> 00:12:51,350

And here we can see that.



180

00:12:51,800 --> 00:12:53,800

And now we don't have a type.



181

00:12:53,840 --> 00:12:54,500

Right.



182

00:12:54,500 --> 00:12:56,530

This value here doesn't have a child.



183

00:12:56,600 --> 00:12:58,470

So we can directly get this value.



184

00:12:58,580 --> 00:13:05,650

So here I can say that at that add value event listener.



185

00:13:06,090 --> 00:13:16,740

And here as you can see I need to put the new key word here and here I can see with capital V as you



186

00:13:16,740 --> 00:13:22,050

can see the autocomplete feature of Android studio is helping me to choose this option value event listener



187

00:13:22,380 --> 00:13:24,590

and then person entelechy on your keyboard.



188

00:13:24,860 --> 00:13:29,400

And now as you can see here the autocomplete feature of Android studio put these lines of code here



189

00:13:29,400 --> 00:13:30,340

for us.



190

00:13:30,360 --> 00:13:35,240

So let me actually put this in another line so that you can see these values are better.



191

00:13:35,520 --> 00:13:40,040

And inside this update or change Mefford I can create a sync rowdier bell.



192

00:13:40,170 --> 00:13:45,030

And as you can see inside this web browser disvalue is instead of double quotes and it is actually an



193

00:13:45,390 --> 00:13:47,090

us think value match.



194

00:13:47,130 --> 00:13:47,880

Right.



195

00:13:47,940 --> 00:13:55,190

So here I can say strange and here the name of my variable could be for example value again.



196

00:13:55,380 --> 00:14:01,050

Assignment operator and here I referred to the name of the state snapshot that actually holds the value



197

00:14:01,050 --> 00:14:02,770

of this key computer name.



198

00:14:02,790 --> 00:14:06,530

So it's a snapshot that gets value.



199

00:14:07,000 --> 00:14:07,920

Semicolon.



200

00:14:08,070 --> 00:14:11,480

And here inside the practice's because this is going to be of type string.



201

00:14:11,520 --> 00:14:18,360

I can say it's strange that class and here I can actually just refer to the name of this takes the more



202

00:14:18,360 --> 00:14:20,060

but takes the computer name.



203

00:14:20,190 --> 00:14:22,680

That's a text value.



204

00:14:23,210 --> 00:14:30,890

OK so now let's run our project and now let me show you the web browser and the emulator.



205

00:14:30,960 --> 00:14:32,660

So let's wait a little bit here.



206

00:14:32,820 --> 00:14:36,900

And I was the case here our application is actually running on the simulator.



207

00:14:36,900 --> 00:14:41,070

So now let's actually click on the spot and get a computer name.



208

00:14:41,500 --> 00:14:44,260

And now as you can see here it says Match which pro.



209

00:14:44,280 --> 00:14:44,850

Right.



210

00:14:45,150 --> 00:14:49,520

So now let's actually change this value match with pro to match.



211

00:14:50,800 --> 00:14:54,600

And that person entered on your keyboard in order to update this value.



212

00:14:54,630 --> 00:14:58,660

And now as you can see here inside the emulator it says matchbook error.



213

00:14:59,010 --> 00:14:59,800

Right.



214

00:14:59,820 --> 00:15:01,830

So hopefully that makes sense.



215

00:15:01,860 --> 00:15:08,850

And now let's actually go back to our Android studio and again inside the curly braces of this uncreate



216

00:15:08,870 --> 00:15:09,530

Smurfette.



217

00:15:09,540 --> 00:15:14,250

So before the Indian curly brace of this country is Meffert we need to actually create our listener



218

00:15:14,610 --> 00:15:16,940

for the spot and this time get more by name.



219

00:15:17,160 --> 00:15:27,290

So here I can say between mobiling that said unclick listener new view unclick new view that Uncle listener.



220

00:15:27,390 --> 00:15:33,140

Now as you can see here we have actually anonymous in a class that is implementing this unclick the



221

00:15:33,140 --> 00:15:38,340

center interface and it is actually providing all an implementation for this uncle Meffert.



222

00:15:38,460 --> 00:15:42,290

So here inside the Anglican if I can put my own logic here.



223

00:15:42,570 --> 00:15:48,000

So now I can say firebase database that gets reference.



224

00:15:48,030 --> 00:15:52,960

So now we need to actually get our reference to discrete as you can see here mobiling.



225

00:15:53,100 --> 00:15:55,030

So let's actually copy disvalue.



226

00:15:55,170 --> 00:16:01,310

So just selected and then right click on it and then click on copy and let's actually go to Android



227

00:16:01,350 --> 00:16:06,300

studio and here inside the parenthesis put two double quotes and inside the double quotes.



228

00:16:06,300 --> 00:16:08,400

Just paste this value my name.



229

00:16:08,700 --> 00:16:11,750

And as you can see we have this word is key here right.



230

00:16:11,760 --> 00:16:20,340

So here I can say that add value events listener knew of value even listener and now as you can see



231

00:16:20,340 --> 00:16:25,050

here you autocomplete feature or Android studio put these lines of code here for me.



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So let's actually put this line in a new line as you can see here so that you can see these values here



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pedir right.



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And we have this undated change method here again.



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And now I can actually create a strange variable value assignment operator data snapshot that gives



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you an insight Apprentice's I can't say strange that class and then put a semicolon at the end of your



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statement.



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And here I have said he is the more by name that set text value.



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



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Let's actually open our Web browser.



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And now let me show you the emulator.



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So now let me click on the spot and get my name



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now as you can see here it says iPhone 7.



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So let's actually change this iPhone 7 to iPhone 5 and then person energy on your keyboard.



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And now as you can see here it is iPhone 5 here also.



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So now we're actually getting these values here easily right.



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It is really simple.



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We just need to put some lines of code and you can see that it's really fairly simple.



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So now what happens if we actually create multiple tiles here.



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So for example let's say for example I want to add a child here.



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So now I actually need to specify the name.



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So here I can say Child 1 or I can say for example something for the name and because I want to create



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another child for this child I don't have to actually provide a value for this trial so I just need



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to click on this plus button here and here I can say something else right something else and then I'm



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able to actually create another child for this child.



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And here I can say for example I think.



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Right.



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And then I want to create another child.



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And here I can say for example key and here I can specify the value and then click on it.



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So now as you can see here we have a child or something.



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And this child also has another child something else and this child hears something else also has an



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older child with his which is actually fine.



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And this Fink here has another child which is this key that has a value.



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So how we can actually get this value right.



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So now let's actually go back to our Android studio.



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Let's go back to our activity on the line minute segment here and now as you can see I want to actually



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get the value of this key right.



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So let's actually actually get a text view here from this widgets folder.



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Just select it and put it here inside these linear layouts vertical and below the Spartan and for the



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idea just step in here.



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TIA XTi my value for example takes the my value and then lets actually just write another button here.



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So just select this button and put it here.



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Below this text view.



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And inside is linearly alphabetical.



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And here for this Id just type in here between my value and in person.



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It helps you on your keyboard and here for the text attribute of the Spartan.



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Just type in here for example get my value and that person into a key on your keyboard.



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So let's actually go back to our main activity our job right here.



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So again let's actually go inside this uncreate method as you can see here at the top it says and creates



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Meffert for they actually hover over this and curly brace as you can see it says uncreate Meffert.



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So inside this uncreate method it over to actually create those objects first of all we have a takes



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takes you right so takes the my value assignment operator and then I need to cast this object to uptakes



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view object find your ID are that Id dot he see my value right.



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And then I need to put a semicolon at the end of my statement.



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And then let's actually create a button so button between my value and then I put an assignment operator



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here and then I need to cast this object to our button object.



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Find your way Id are that Id dot between BT and my body.



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And then put a semicolon at the end of your statement.



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So now let's actually create our listener for the spot in between my value that sits on click listener



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new view that unclick listener and now inside is Uncle Mefford here I'm going to actually show you something



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really important.



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So let me open the web browser here.



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As you can see here we have something here.



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Right.



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And inside is something we have something else inside is something else we have this feeling.



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And inside these screens we have this key and value.



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So how we can access this value.



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It's very important as you can see here it is you are in here as you can see I select it right.



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This is actually you are at right.



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So now let me click on this key here.



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As you can see this you are all here changed.



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Right.



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00:21:42,300 --> 00:21:49,520

So now it says this you are in slash something slash something else slash fiend slash key.



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So it says that in this instance database instance we have something inside is something we have something



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else inside is something else we have this field.



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And inside this field we have this key.



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So in other words we have actually our reference to this key as you can see it says key value.



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00:22:09,270 --> 00:22:13,420

So now if we click on this you are in here as you can see this is actually a reference right.



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00:22:13,440 --> 00:22:16,900

We already have a reference to this database here.



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00:22:16,950 --> 00:22:23,610

Let me actually just highlighted here so that you can see we already have a reference to this database



311

00:22:23,850 --> 00:22:28,890

but we also want a reference to something and then we want to add a reference to the something else.



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00:22:28,980 --> 00:22:31,980

And then we want a reference to this field and is key.



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00:22:32,190 --> 00:22:38,820

So we can add to the capitis value here something slash something else slash slash chie.



314

00:22:39,000 --> 00:22:42,310

So just right click on it and then click on copy.



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00:22:42,630 --> 00:22:48,870

And now let's actually go back to what Android studio and inside this analyst Meffert I can say firebase



316

00:22:48,870 --> 00:22:52,860

database but get the reference.



317

00:22:52,950 --> 00:22:59,070

So this firebase entire database already actually contains a reference to our instance which is this



318

00:22:59,070 --> 00:22:59,470

one.



319

00:22:59,730 --> 00:23:04,340

But we want a reference to this key right because you want to get the value of this key.



320

00:23:04,350 --> 00:23:10,170

So I want a reference to is key inserted practices of this get reference Smurfette just put two double



321

00:23:10,170 --> 00:23:14,800

quotes and then just paste this value here something.



322

00:23:15,060 --> 00:23:16,440

Slash something else.



323

00:23:16,540 --> 00:23:18,720

Slash slash cheat.



324

00:23:19,230 --> 00:23:21,120

So now let me show you the web browser.



325

00:23:21,120 --> 00:23:25,800

Now that metrically click on this database instance which is actually the name of her application.



326

00:23:26,250 --> 00:23:33,660

And now as you can see I created are you Arel and if you already have access to this instance Salvini



327

00:23:33,680 --> 00:23:34,990

to access this something.



328

00:23:35,040 --> 00:23:40,830

So I put this something here inside the practices and inside double quotes first I put this something



329

00:23:41,070 --> 00:23:46,230

slash and then you want to access something else again something else.



330

00:23:46,290 --> 00:23:47,340

Slash.



331

00:23:47,400 --> 00:23:49,570

And then we want to access this field.



332

00:23:49,770 --> 00:23:51,730

So slash field.



333

00:23:51,870 --> 00:23:55,970

And then we want to access these keys so that we can actually access this value right.



334

00:23:56,040 --> 00:24:02,810

So slash key and here I can say it at value event listener.



335

00:24:03,090 --> 00:24:03,490

Right.



336

00:24:03,510 --> 00:24:09,690

I am actually creating a listener for this key because I can actually access this key so I can actually



337

00:24:09,690 --> 00:24:17,790

create an add value center here so that we can see this value and add value eventless and how new view



338

00:24:18,200 --> 00:24:22,620

the new value event listener and then person into on your keyboard.



339

00:24:22,620 --> 00:24:28,230

So now let me actually create a new line here so that you can see these values here.



340

00:24:28,380 --> 00:24:29,230

As you can see.



341

00:24:29,370 --> 00:24:35,430

So now we need to actually put a semicolon here and now we have this update or change my fifth.



342

00:24:35,580 --> 00:24:40,310

And here I can actually create a single ridable string.



343

00:24:40,580 --> 00:24:42,670

Why do you assignment operator.



344

00:24:42,900 --> 00:24:52,540

And here I can say for example a snapshot start to get value and put a semicolon at the end of your



345

00:24:52,540 --> 00:24:57,650

statement and inside the parenthesis because this is going to be a string value just like in here string



346

00:24:57,700 --> 00:24:59,760

that class.



347

00:25:00,220 --> 00:25:00,830

Right.



348

00:25:00,880 --> 00:25:07,930

And here I can say it takes the mind value that said text value right.



349

00:25:08,200 --> 00:25:11,830

Now let's actually run our project and see what happens.



350

00:25:11,830 --> 00:25:17,230

Now let me show you the web browser and the emulator here.



351

00:25:17,240 --> 00:25:20,690

So now as you can see our application is running on the simulator.



352

00:25:20,840 --> 00:25:23,950

So now let's actually click on the spot and get more value.



353

00:25:24,320 --> 00:25:26,510

And now as you can see here it says value.



354

00:25:26,510 --> 00:25:30,210

So if we successfully accessed the value of this key.



355

00:25:30,230 --> 00:25:31,990

Right.



356

00:25:32,060 --> 00:25:35,780

So I think that's enough for this year.



357

00:25:35,810 --> 00:25:41,360

So if you have any questions about the concepts that are hard to you in this lesson please what's the



358

00:25:41,360 --> 00:25:44,880

discussion in the course and then I do my best to answer all of your questions.



359

00:25:44,900 --> 00:25:47,420

Thank you very much for watching and I'll see you in the next year.



360

00:25:47,460 --> 00:25:47,830

Audiard.