1

00:00:00,870 --> 00:00:04,060

So now let me show you an important point here.



2

00:00:04,260 --> 00:00:08,240

So now this actually open the browser here and now.



3

00:00:08,250 --> 00:00:11,700

Let me actually just delete this value here.



4

00:00:11,700 --> 00:00:15,510

Just click on the list delete button here and then present it here.



5

00:00:15,730 --> 00:00:22,810

Here and now I want to actually just create another child.



6

00:00:22,860 --> 00:00:25,120

So just click on these ADD child button here.



7

00:00:25,140 --> 00:00:33,130

This plus button and for the name or you can assign the value for example name right name.



8

00:00:33,260 --> 00:00:35,810

And here I can for the value I can assign a value.



9

00:00:35,810 --> 00:00:41,460

For example mortars right and then I can add this value.



10

00:00:41,840 --> 00:00:45,650

So here we have this key and here we have this value.



11

00:00:45,800 --> 00:00:48,160

So let's actually create an order child.



12

00:00:48,170 --> 00:00:51,270

So just click on the plus button here at child.



13

00:00:51,530 --> 00:00:56,810

And again the name is going to be a name for the key name and the value.



14

00:00:56,810 --> 00:01:00,830

We have another thing for example I can say another name.



15

00:01:01,130 --> 00:01:01,890

Right.



16

00:01:01,910 --> 00:01:06,370

And then here just click on this add button here and let's see what happens.



17

00:01:06,830 --> 00:01:16,520

As you can see here we can't actually create to a child's with the same key be the same key name we



18

00:01:16,520 --> 00:01:16,960

have.



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00:01:17,060 --> 00:01:20,170

You can only have munchy right.



20

00:01:20,270 --> 00:01:25,190

And the key is name and it actually just updated the value and other name.



21

00:01:25,190 --> 00:01:26,310

So what happened here.



22

00:01:26,330 --> 00:01:28,190

So how we can solve this problem.



23

00:01:28,190 --> 00:01:35,150

So for example we may have lots of boxers and those boxers have our key name.



24

00:01:35,180 --> 00:01:35,700

Right.



25

00:01:35,720 --> 00:01:37,050

Those boxers have names.



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00:01:37,220 --> 00:01:43,460

And we need to actually provide a value for the name of each boxer and here as you can see we can only



27

00:01:43,460 --> 00:01:47,800

create our name or key with one name.



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00:01:47,880 --> 00:01:51,860

Can actually create two keys with the same name.



29

00:01:51,950 --> 00:01:57,060

So in order to solve this problem we can actually just let me actually did it.



30

00:01:57,230 --> 00:02:00,010

Does she value here just delete it.



31

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And then press delete button here and then it's going to delete it.



32

00:02:03,620 --> 00:02:04,450

Right.



33

00:02:04,520 --> 00:02:06,220

And here I can get you to click on.



34

00:02:06,230 --> 00:02:12,040

Plus spot and he had a child and he can't say for example box ID.



35

00:02:12,410 --> 00:02:13,060

Right.



36

00:02:13,350 --> 00:02:22,090

And now as you can see here I can see that plus I can I don't want to assign a value here to this box



37

00:02:22,090 --> 00:02:29,050

at did because in that case I cannot actually create a cheat roll for this box or ID here.



38

00:02:29,090 --> 00:02:34,200

So I want to actually just create a category list and this category is box that ID.



39

00:02:34,370 --> 00:02:40,010

So because I want to create a category I must not actually provide a value for this category.



40

00:02:40,040 --> 00:02:43,710

So here I just need to click on this child here.



41

00:02:43,710 --> 00:02:44,560

Right.



42

00:02:44,900 --> 00:02:54,050

And now as you can see for the name I can assign a value for example name and the value is going to



43

00:02:54,050 --> 00:02:59,200

be for example of value right.



44

00:02:59,480 --> 00:03:01,860

And then I can actually add this child here.



45

00:03:02,210 --> 00:03:04,600

So Boxer ID name value.



46

00:03:04,790 --> 00:03:09,940

So now as you can see I can actually create another child.



47

00:03:10,070 --> 00:03:12,070

So another child.



48

00:03:12,080 --> 00:03:16,310

So the idea is going to be for example one two three four.



49

00:03:16,700 --> 00:03:21,760

And because this is going to be a category I don't want to specify a value here.



50

00:03:21,890 --> 00:03:24,380

And then I just need to create another child here.



51

00:03:24,500 --> 00:03:31,310

So just click on this child here and now again I can actually create a name and then I can create a



52

00:03:31,310 --> 00:03:34,150

value for this name and then click on it.



53

00:03:34,310 --> 00:03:40,760

So as you can see here in this way when we actually create another category inside that category we



54

00:03:40,760 --> 00:03:42,350

have a name and a value.



55

00:03:42,560 --> 00:03:48,920

And that's why we actually provide a box of ID inside the user interface so that the user can actually



56

00:03:48,920 --> 00:03:51,670

provide a unique ID.



57

00:03:51,890 --> 00:03:56,690

And then we can actually create lots of boxes with lots of names and other attributes.



58

00:03:56,690 --> 00:03:57,880

Right.



59

00:03:57,890 --> 00:04:03,500

So as you can see now we have two kids with the same name but in two different categories.



60

00:04:03,800 --> 00:04:10,070

But if you wanted to actually just create two keys with the same name without creating these categories



61

00:04:10,260 --> 00:04:14,690

or in that case we do we are not allowed to do that and we may have problems.



62

00:04:14,780 --> 00:04:15,660

Right.



63

00:04:15,680 --> 00:04:17,500

So let's go back to what Android studio.



64

00:04:17,540 --> 00:04:19,750

First of all it's actually it is values here.



65

00:04:20,090 --> 00:04:24,660

And then delete this here delete.



66

00:04:24,850 --> 00:04:28,660

And now as you can see here we have only this instance right.



67

00:04:28,660 --> 00:04:33,780

So let's actually to go back to our Android studio and now inside is unclear.



68

00:04:33,780 --> 00:04:34,780

Meffert here.



69

00:04:34,930 --> 00:04:40,780

So now I'm going to paste in a line of code here and then I'm going to explain to you what's going on



70

00:04:40,780 --> 00:04:41,420

here.



71

00:04:41,680 --> 00:04:46,630

So as you can see here this is the line of code that I pasted here inside this unclear method.



72

00:04:46,780 --> 00:04:48,280

So let's look at this line of code here.



73

00:04:48,310 --> 00:04:49,800

Let's see what's going on here.



74

00:04:49,960 --> 00:04:56,500

So as you can see I actually am referring to this minor offense here which is of type database reference



75

00:04:56,590 --> 00:05:02,660

and we are actually specifying our location in order to say to actually write our data in the database.



76

00:05:02,710 --> 00:05:05,750

So my dear child.



77

00:05:05,770 --> 00:05:08,100

So now let me open the web browser here.



78

00:05:08,290 --> 00:05:12,150

As you can see I told you that we can actually create 2000 here.



79

00:05:12,220 --> 00:05:18,840

So if you actually click on this plus button here at child I can create our children here for this parent.



80

00:05:19,060 --> 00:05:19,570

Right.



81

00:05:19,720 --> 00:05:27,580

So here when I say my if that child is the same thing that I did here when I say our child is the same



82

00:05:27,580 --> 00:05:28,640

thing here myself.



83

00:05:28,670 --> 00:05:31,550

So my that is referring to this instance right.



84

00:05:31,570 --> 00:05:38,250

You want to write our data here and then we need to actually specify a child for this parent.



85

00:05:38,440 --> 00:05:44,800

And here as you can see inside these Apprentice's of this child as you can see here we need to specify



86

00:05:45,100 --> 00:05:47,750

the name the value of the key.



87

00:05:47,980 --> 00:05:48,450

Right.



88

00:05:48,610 --> 00:05:50,860

So here we need to specify the key.



89

00:05:51,150 --> 00:05:54,910

And as you can see here name value right here we need to specify the name.



90

00:05:54,940 --> 00:06:03,790

So I actually fed to the name of this ADT box that Id write it in the box at 80 that it takes that to



91

00:06:03,790 --> 00:06:04,440

strength.



92

00:06:04,600 --> 00:06:12,320

So here the name is going to be this ID right and here.



93

00:06:12,640 --> 00:06:19,300

And then I to the card again to chide because I want to actually create a category beatboxer ID.



94

00:06:19,600 --> 00:06:26,320

I don't want to just actually provide a value for this box or ID.



95

00:06:26,350 --> 00:06:28,570

So as you can see here might have a child.



96

00:06:28,600 --> 00:06:32,470

And inside the Prentice's of this child I need to specify the key.



97

00:06:32,650 --> 00:06:36,280

So I said that it is epoxied ID that takes that twisting.



98

00:06:36,280 --> 00:06:37,850

So this is going to be the key.



99

00:06:38,290 --> 00:06:43,850

And are you going to create A.F. child inside that child.



100

00:06:43,870 --> 00:06:48,520

So I want to create an automatic DVD box and ID and then.



101

00:06:48,670 --> 00:06:52,440

So for example he had the box that ID is 1 2 3 4 right.



102

00:06:52,780 --> 00:06:55,910

Because I went over to create a category here.



103

00:06:56,020 --> 00:07:00,300

I must not provide a value for this value right.



104

00:07:00,340 --> 00:07:07,340

So here because I want to create children for this category I just need to click on plus here.



105

00:07:07,360 --> 00:07:08,380

Right.



106

00:07:08,380 --> 00:07:12,730

So now we have this chat go to here as you can see.



107

00:07:12,730 --> 00:07:14,970

Name one two three four.



108

00:07:15,160 --> 00:07:15,610

Right.



109

00:07:15,820 --> 00:07:18,790

And now as you can see here this is our category.



110

00:07:18,790 --> 00:07:23,380

And now I can actually create children for this ID.



111

00:07:23,520 --> 00:07:24,330

Right.



112

00:07:24,460 --> 00:07:27,040

So here I can't say that.



113

00:07:27,550 --> 00:07:29,490

Let me show you the Android studio.



114

00:07:29,590 --> 00:07:33,720

So he might have that child it the box that ID that takes that to stream.



115

00:07:33,730 --> 00:07:37,930

So this is actually going to be a category disvalue.



116

00:07:38,110 --> 00:07:38,650

Right.



117

00:07:38,650 --> 00:07:40,290

Let me show you the web browser.



118

00:07:40,390 --> 00:07:44,560

And now again I called child on this child here.



119

00:07:44,590 --> 00:07:49,710

So because I want to create another child for this child so tight with the key name.



120

00:07:50,050 --> 00:07:54,590

And then as you can see here alcaldes set value on this child.



121

00:07:54,940 --> 00:07:55,470

Right.



122

00:07:55,480 --> 00:08:02,310

So now let me actually just delete these values here and now let me open the Android studio.



123

00:08:02,320 --> 00:08:04,570

So what sets value.



124

00:08:04,570 --> 00:08:08,330

EDT Buxar name that takes the history.



125

00:08:08,530 --> 00:08:12,520

So let me run the project and then it will make sense.



126

00:08:12,520 --> 00:08:20,370

So here let me opened a web browser and now that application is actually running on the simulator here



127

00:08:20,750 --> 00:08:23,320

let's actually provide a box that ID here.



128

00:08:23,320 --> 00:08:27,980

So the box idea you should actually ask the user to provide a unique ID.



129

00:08:28,090 --> 00:08:32,170

You can ask them to actually provide his or her mobile phone number.



130

00:08:32,170 --> 00:08:35,120

So here I'm going to provide a value one two three four five.



131

00:08:35,290 --> 00:08:35,740

Right.



132

00:08:35,950 --> 00:08:38,550

And then I can get you to provide the proximate name.



133

00:08:38,540 --> 00:08:46,280

So the box name can be for example a box or a right or can I say that.



134

00:08:47,020 --> 00:08:48,950

So this is this is the name of the boxer.



135

00:08:49,180 --> 00:08:53,520

And then I can actually click on it and send data to set it right.



136

00:08:53,530 --> 00:08:59,740

So because we only actually provided this line of code here in order to just create actually a box of



137

00:08:59,740 --> 00:09:07,120

ID and then inside that category box that idea we just need to create a tight name and then we are setting



138

00:09:07,120 --> 00:09:09,780

the value of that a name which is a right.



139

00:09:09,880 --> 00:09:16,480

So now let's actually click on disputant send data to server and now let's actually open the browser



140

00:09:16,940 --> 00:09:18,140

as you can see here.



141

00:09:18,520 --> 00:09:21,350

We have actually a track record with this ID.



142

00:09:21,420 --> 00:09:23,260

One two three four five.



143

00:09:23,530 --> 00:09:23,830

Right.



144

00:09:23,830 --> 00:09:26,740

So this is the key readout value.



145

00:09:27,030 --> 00:09:32,260

And then as you can see inside these categories we have name name of the boxer.



146

00:09:32,440 --> 00:09:39,060

And as you can see that excuse me the value is a.



147

00:09:39,260 --> 00:09:40,280

Right.



148

00:09:40,340 --> 00:09:46,610

So let's actually open the Android studio so I can get you to say the name is for example box her name



149

00:09:48,300 --> 00:09:51,290

and let's actually add up application again.



150

00:09:51,950 --> 00:09:55,280

Let's open the web browser and the emulator.



151

00:09:55,280 --> 00:09:59,990

So here I can say that the name is another name for example.



152

00:10:00,440 --> 00:10:02,050

For example A.



153

00:10:02,090 --> 00:10:02,650

Right.



154

00:10:02,840 --> 00:10:10,380

And then let's actually just click on the send data to server and as you can see here we have another



155

00:10:10,410 --> 00:10:17,790

cheap box so name the devaluate a and as you can see here we have this name here OK because we change



156

00:10:17,880 --> 00:10:18,860

the key here.



157

00:10:18,900 --> 00:10:21,780

We can actually create two keys with different names.



158

00:10:21,840 --> 00:10:24,020

So let's actually delete this shit here.



159

00:10:24,750 --> 00:10:25,580

Delete.



160

00:10:25,680 --> 00:10:28,770

Let's actually open our emulator again.



161

00:10:28,860 --> 00:10:34,660

Let's change this value back name to BBB and then click on send data to a server.



162

00:10:34,680 --> 00:10:37,560

And now it's going to update the value of this box only.



163

00:10:37,800 --> 00:10:44,540

Right because we can only have one key one key inside our are critical to here right.



164

00:10:44,550 --> 00:10:46,960

We can have two keys with the same name.



165

00:10:46,980 --> 00:10:48,820

Inside our category.



166

00:10:48,840 --> 00:10:49,840

So this is the idea.



167

00:10:49,840 --> 00:10:51,570

One two three four five bucks.



168

00:10:51,580 --> 00:10:53,350

Name this value right.



169

00:10:53,700 --> 00:11:00,930

And let's actually change the ID to another value for example 10 10 10 and let's actually click click



170

00:11:00,930 --> 00:11:07,850

on send that data to server as you can see it's going to create another category with this ID and it



171

00:11:07,880 --> 00:11:12,130

inside that category we have boxer named BBB.



172

00:11:12,360 --> 00:11:13,800

Right.



173

00:11:13,860 --> 00:11:15,750

So hopefully that makes sense.



174

00:11:15,750 --> 00:11:18,210

Let's actually go inside and write studio.



175

00:11:18,390 --> 00:11:20,610

And again I can't say my ref.



176

00:11:21,070 --> 00:11:25,230

But child so the child is going to be.



177

00:11:25,230 --> 00:11:32,100

Again we need to actually specify the actually ID because we are going to put our values inside the



178

00:11:32,190 --> 00:11:32,780

ID right.



179

00:11:32,790 --> 00:11:35,520

We need to actually prove or create a category.



180

00:11:35,580 --> 00:11:41,620

So ADT Buxar ID that get fixed that constraint.



181

00:11:41,910 --> 00:11:42,480

Right.



182

00:11:42,540 --> 00:11:49,950

And then as you can see here we need to create another child for this ID right because this ID here



183

00:11:49,950 --> 00:11:55,940

is actually a category not a key value or category only only we need to provide a key.



184

00:11:56,100 --> 00:11:57,150

So this is the key.



185

00:11:57,240 --> 00:11:58,690

This is the value of the key.



186

00:11:58,890 --> 00:12:04,830

We dont want to provide an a value for this key we just want to provide the key because inside that



187

00:12:04,970 --> 00:12:13,620

we we are we are going to actually create some children so that child again that child and now I need



188

00:12:13,620 --> 00:12:26,250

to specify the key of that child so that she of that child could be actually a boxer punch power.



189

00:12:26,760 --> 00:12:27,370

Right.



190

00:12:27,660 --> 00:12:30,830

And then I can say that.



191

00:12:30,840 --> 00:12:35,650

So as you can see here I created a new line here so that you can see these values right.



192

00:12:35,670 --> 00:12:40,960

I could say just hear that and then I could actually write my code here but I want to put it here and



193

00:12:41,040 --> 00:12:43,620

in an evil line so that you can see whats going on here.



194

00:12:43,920 --> 00:12:46,610

That said value.



195

00:12:46,740 --> 00:12:50,330

And as you can see here this sets volume if it needs an object right.



196

00:12:50,460 --> 00:13:00,200

So here I can see EDT Boxer punch power dot get text dot to a string as you can see here.



197

00:13:00,210 --> 00:13:02,630

I just want to put a semicolon at the end of my statement.



198

00:13:02,820 --> 00:13:07,830

So when the user provides a value for that detail which is going to be an integer value is going to



199

00:13:07,830 --> 00:13:13,020

actually convert that value to a string value and then we can actually send those data to the server.



200

00:13:13,020 --> 00:13:16,330

So let's actually run our project now.



201

00:13:16,650 --> 00:13:22,530

And now let's actually open a web browser and then the emulator here.



202

00:13:22,860 --> 00:13:30,570

So enter our unique IDs with a unique ID could be for example 1 2 3 4 5 right as you can see I put the



203

00:13:30,570 --> 00:13:32,020

same ID that we have here.



204

00:13:32,040 --> 00:13:32,820

Right.



205

00:13:32,940 --> 00:13:36,270

And the box name could be for example.



206

00:13:36,960 --> 00:13:48,390

And the punch power here and say 1000 or 10000 or 100000 right and that I can't make this keyboard disappear.



207

00:13:48,810 --> 00:13:55,790

And then I can click on this send data to server and here as you can see it is updated this that the



208

00:13:55,870 --> 00:14:02,150

value of this Buxar name and actually created another child for this category which is this 1 1 2 3



209

00:14:02,150 --> 00:14:06,380

4 5 bucks punch power disvalue 100000.



210

00:14:06,780 --> 00:14:07,860

Right.



211

00:14:08,150 --> 00:14:13,470

And now I can actually create another IED for example the idea is one right.



212

00:14:13,550 --> 00:14:22,960

And then I can just say that the Paxo name is a ABC and a boxer punch power is for example 200.



213

00:14:23,360 --> 00:14:24,000

Right.



214

00:14:24,050 --> 00:14:26,530

And then I can make this keyboard disappear.



215

00:14:26,720 --> 00:14:31,690

And then you can send data to a server as you can see it's going to create another category here.



216

00:14:31,880 --> 00:14:32,380

Right.



217

00:14:32,540 --> 00:14:40,100

And if I open this one here as you can see we have these children inside this key that the ID is one



218

00:14:40,190 --> 00:14:43,680

box and ABC box or punch power is 200.



219

00:14:44,180 --> 00:14:45,500

So hopefully that makes sense.



220

00:14:45,500 --> 00:14:49,330

So let's go back into our Android studio and let's put the other lines of code here.



221

00:14:49,610 --> 00:14:53,930

Might have that might have that child so the child is going to be there.



222

00:14:54,080 --> 00:15:01,760

Actually there Id be doubtable you because that idea is going to be itself a category that I can actually



223

00:15:01,760 --> 00:15:03,540

contain other children.



224

00:15:03,590 --> 00:15:08,840

So EDT Boxer Alita get text that too strange.



225

00:15:09,590 --> 00:15:16,060

And then I can actually call that child an insider practice of this child.



226

00:15:16,070 --> 00:15:26,870

I can just put it in Boxer Ponch speed and then I can call this set volume if it undischarged set value.



227

00:15:27,020 --> 00:15:32,240

EDT Buxar punch spit that get text that too.



228

00:15:32,600 --> 00:15:35,900

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



229

00:15:35,930 --> 00:15:43,700

Again I'll refer to the name of this reference to that child and that the child is going to be against



230

00:15:43,700 --> 00:15:53,300

the ID EDT Boxer ID that get text that is trained and then again child and inside Apprentice's Boxer



231

00:15:54,260 --> 00:15:55,260

stamina.



232

00:15:55,490 --> 00:16:06,370

So this is going to be the key that sets value Itay Buxar stamina that kid takes that to strange.



233

00:16:06,410 --> 00:16:09,280

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



234

00:16:09,380 --> 00:16:11,600

So now it's actually run our project again.



235

00:16:12,600 --> 00:16:17,820

And let's actually open the web browser and then the emulator here.



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So let's provide some values here.



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So for example the idea can be 1 2 3 4 5 6 7 8 9.



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OK one two three four five six seven eight nine.



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And the Pogson name is going to be for example a b c d.



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And the punch power is 1000.



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The punch spit is 2000 and boxercise you know is for example 200 or 2000.



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Right.



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And then I can actually make the keyboard disappear.



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And then I can just click on this send data to a server.



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As you can see we have another category here.



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Right.



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And if we have boxer name we have boxer punch power we have blocks upon speed and we have boxer stamina



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right.



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So this is just an application in order to show you how we can actually create children inside your



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structure and how we can actually create our children for those children.



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And then how you can send data to the server so I can actually create lots of children.



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So as you can see here I can say that my ref thought child for example the child is a right that child



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and the child the child of A is B.



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Right.



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But child and the child of B is see that child and the child of C is D.



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And then finally I can say set value and the value is right.



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I can't put a semicolon here.



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Let's run our project now and then this let me show you the emulator here.



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So just open your web browser and then the emulator.



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And now I can just again click on the send data to say here.



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So as you can see here we have another category and this category contains another category.



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So A contains B C B contains C and D.



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Is equal to eat right.



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We have.



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We can actually create lots of child inside our categories.



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So hopefully that makes sense.



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And you already know what's going on here.



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So you can actually figure out how to actually write data and data and send it to a server.



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So if you have any questions about these concepts that I taught you in this material please post the



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



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