Download "Разработка Android приложений/Урок 4 - 7/Внешний вид приложения"

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Уроки по Kotlin на Android Studio 2020/Урок 1

Уроки по Kotlin на Android Studio 2020/Урок 1

Channel: Neco Ru

Поддельные флешки большой емкости из Китая (Прошивка контроллера)

Поддельные флешки большой емкости из Китая (Прошивка контроллера)

Channel: Denis95ekb

Курс по KOTLIN и ANDROID STUDIO для начинающих || Урок 2

Курс по KOTLIN и ANDROID STUDIO для начинающих || Урок 2

Channel: Neco Ru

SQLite База Данных на Андроид (KOTLIN)/ Урок 17

SQLite База Данных на Андроид (KOTLIN)/ Урок 17

Channel: Neco Ru

Разработка Android приложений

Android Studio

создание приложений

андроид

котлин

программирование

java программирование

java

как стать программистом

как создать приложение

приложение под андроид

установка Android Studio

курс по програмированию

Android

Android Studio уроки

Android Studio курс

Разработка приложений под Android

kotlin

androidstudioneco

программированиеneco

necoandroid

00:00:02

to study how to improve the appearance of

00:00:05

the application, we will again use the example of the

00:00:08

fisherman's reference book to improve the application,

00:00:11

today I suggest you make an

00:00:13

introductory splash screen, let there

00:00:15

be, for example, a logo,

00:00:16

the screen will appear after we have two

00:00:19

options, I will show you both options, the

00:00:21

first option is this after a few

00:00:23

seconds, the

00:00:25

main screen automatically opens where we have a

00:00:28

list and you can pull out a menu with

00:00:30

categories

00:00:31

or we will have a button, so when the

00:00:34

preliminary screen opens where

00:00:36

we will have either a logo or some kind of

00:00:38

greeting,

00:00:39

then we will have a button at the bottom to start or

00:00:42

start or whatever you do, whatever

00:00:44

you want, come up with it yourself and when you click on this

00:00:47

button we will go to the main screen,

00:00:49

so today we will look at these two methods

00:00:51

and see how to use

00:00:54

the background, who already understands at least

00:00:57

a little Android, I think you should know what

00:00:59

the background is background, almost all

00:01:01

elements that can be placed on

00:01:04

the screen have a background, so in this

00:01:07

lesson we will create it in the next lesson, I

00:01:09

think we will even animate it, we will add

00:01:12

animation so that, for example, a

00:01:14

wulf swims out from a small one and turns into a big one,

00:01:17

this is a grandson, we will make a beautiful background, we will make

00:01:19

a logo and we will do it in the next lesson

00:01:22

so that the logo floats out like a bow from a

00:01:24

small one turns into a big one, that is, it floats

00:01:26

out of nowhere, so it will be much more

00:01:29

beautiful and attractive and so, let’s

00:01:31

get to the lesson,

00:01:41

so let’s get straight to the point, let’s start

00:01:44

creating new activities right away, this

00:01:46

will be our

00:01:47

activity logo activity, that is, somewhere

00:01:50

where we will have

00:01:51

the logo, the beginning of the tactics appears, then it

00:01:54

comes to the main screen, let's

00:01:56

now create this activity, if anyone doesn't

00:01:59

remember, here in the java folder, the very

00:02:01

first one is the folder fisher handbook com,

00:02:05

finally, like fisher God, I have this

00:02:07

because I this is what I named my folder and this is

00:02:10

mainactivity text content activity but

00:02:13

here there are already two activities

00:02:14

mainactivity there was already text content

00:02:16

activity we created in the previous lessons

00:02:17

so here we will create another

00:02:21

activity and so on hover here with the mouse and

00:02:24

press the right button new java class

00:02:27

here but I I’ll write and name the

00:02:29

new activity logo activity of the blog, this is

00:02:34

the logo in Russian so activity and we will

00:02:40

need a superclass here, that is,

00:02:41

we will follow all the characteristics of

00:02:44

activity because if we don’t

00:02:45

do this, then it will just be a class

00:02:47

that will not do anything at all,

00:02:48

you will have to Mom’s own writing,

00:02:51

so as not to do this, we inherit everything we

00:02:53

need from the activity class when we have a

00:02:56

full-fledged activity, we

00:02:57

all inherited the superclass here, after all, it’s

00:03:01

written and we press ok, that’s it, we now have the

00:03:03

activity class,

00:03:06

here you see the name is highlighted in

00:03:08

yellow again, why because it’s activity not

00:03:10

added to the manifest, all the activities

00:03:12

that we have need to be added to the

00:03:15

android manifest, here we have the

00:03:17

activity text content activity

00:03:19

already added, we have two ways to

00:03:22

do this in previous lessons, I

00:03:24

showed you on the water, here the cursor

00:03:27

appears with a yellow light a hint

00:03:29

and here we have 3 choices from activity to

00:03:33

manifest, that is, adding our activity

00:03:35

manifest is the easiest way,

00:03:37

but now I’ll show you another way, we

00:03:39

just copy this

00:03:41

activity

00:03:42

past and paste it right after this

00:03:47

activity and the bird should be inside

00:03:50

these brackets triangular ones

00:03:52

are less than more than and there is a slash and and

00:03:56

after the triangular bracket is more than

00:03:58

you see now we have an swearing here that the

00:04:01

activity has already been added twice we are simply

00:04:03

changeable now we just write the name of

00:04:06

our activity it was logo activity

00:04:08

now a hint appears, select

00:04:11

everything now in the manifest registered

00:04:14

at the mine because she has permission

00:04:16

to work on a smartphone. Now we

00:04:19

just need to add the

00:04:21

most important method oncreate, we press

00:04:24

control on English and it opens and

00:04:28

opens all the methods that

00:04:30

this class of our activity has and we look for

00:04:34

where it says oncreate but the shortest

00:04:36

inscription it heats up and with instant stand

00:04:38

bundle white we all select it and

00:04:41

this appears, I think we won’t

00:04:43

need to delete it if it

00:04:47

shows in red and that’s it, now we will need to

00:04:50

create the faucet itself and we will load it

00:04:54

after here using setcontentview

00:04:56

but there is no screen yet that means we need to go

00:04:59

to

00:05:00

resources here is the res folder bark out and

00:05:05

here we see we already have some

00:05:06

taps let’s create another new light

00:05:09

resource file opens and here

00:05:12

you see the root element constraintlayout if

00:05:15

you don’t have constrain ayah they wrote to me in

00:05:17

the comments that sometimes it works Is it not an

00:05:19

eagle poison, then just look if I delete it,

00:05:22

we start writing constrain and here

00:05:25

a constrain appears and here a

00:05:28

constrain way out appears I

00:05:30

will win it all if you wanted a hand

00:05:32

element line royal we will write in the lines and

00:05:36

is it not an eagle out but I will write a

00:05:38

constrain wild everyone chose the control

00:05:44

you now the name let it be blog

00:05:46

activity and it will be called lova

00:05:50

activity and the main root element we have that is

00:05:53

the main container when we all

00:05:55

put it constraintlayout so

00:05:58

everything opens this blueprint

00:06:02

which is here I hardly

00:06:05

use it so I choose

00:06:06

you here you can choose in these selected

00:06:08

2 seconds + blue print

00:06:10

or just hangs on here I use it

00:06:12

just not much and so it is a root

00:06:15

element this is a constraintlayout container

00:06:18

so when the ends of the royal here all the elements

00:06:21

are relative to each other we

00:06:23

tie them to each other with such a sculpted there

00:06:25

very it’s convenient to work with the project, so I

00:06:27

recommend it to you here, what we’ll place here

00:06:30

will need to be in the center, well, for example, in the

00:06:32

center of the logo logo, we will have a button

00:06:35

to place the logo in the center,

00:06:37

we take the imageview like this, but for now we’ll add

00:06:42

an avatar and bind the left edge to the right

00:06:48

and up down after we link it so here we

00:06:53

will have a logo coming out,

00:06:54

we will need, of course, to take a picture somewhere

00:06:58

with our logo or create it

00:07:00

and so on below the button, well, for now I have a

00:07:03

pretty simple button after that you

00:07:05

can change it you be a button

00:07:11

and I will call it well, so that the resource doesn’t

00:07:13

create anything, that’s what it’s called and de

00:07:15

botton and the text we need those to

00:07:18

change this text loaf, we’re looking for the

00:07:21

text attribute if we don’t blame you here, you see the

00:07:24

text if we don’t see it here, you can

00:07:26

write it in the search engine here, but I’ve

00:07:28

already found it the task in mind is here start

00:07:31

will come out start there you can

00:07:34

write anything in general, it’s better to immediately link it

00:07:36

to resources, too, that is, not directly

00:07:38

write start, it’s called a hardcut, that

00:07:42

is, the wrong code, but here in the

00:07:44

string resources create a text resource

00:07:49

loaf, let it be like this, I’ll copy it here I

00:07:54

will change let it be like this wrong

00:07:58

bad things that bad and start and here

00:08:03

let the start be not in Russian all the

00:08:15

old ones now we bind this resource to this button

00:08:19

where we have it so we look for the

00:08:23

text here it is and here the buttons

00:08:27

select our resource we have the resource start

00:08:32

it means where we have the

00:08:33

bait gear so we start everything and this

00:08:38

start we tie the pictures so that they

00:08:41

are together like this at a

00:08:43

certain distance to the left side and

00:08:46

to the right side

00:08:47

and that’s all basically how we will have it

00:08:50

here we see we will select now

00:08:53

built in the background

00:08:54

is exactly the color and so what color can we

00:08:59

choose? We close it and look for the background

00:09:06

in the game. We can have it. The picture

00:09:09

can be the color. you

00:09:21

want to put a

00:09:23

picture as a ground, you

00:09:25

will need to take another imageview, stretch

00:09:28

it along the entire length and place

00:09:30

the picture in it, you can take, for example, this

00:09:34

green vagrant, just see an example,

00:09:36

we will have it like this, or

00:09:39

take if take

00:09:41

look if we take for example that

00:09:42

something is happening in the picture, it

00:09:45

stretches if I put this picture in the imageview,

00:09:49

you can keep the picture in

00:09:52

its proportions using certain

00:09:53

commands,

00:09:55

control, then there are no such commands,

00:09:57

the picture just stretches, you

00:09:58

can’t do anything, and so it

00:10:01

would work for us ground, let’s choose a color,

00:10:03

who has us color can be a color, in

00:10:08

principle, you can see any court, we

00:10:10

can fit a logo, I don’t know,

00:10:12

maybe choose all the same black

00:10:15

background from black no, let’s create some

00:10:19

resource new color, it will be a pain

00:10:22

to choose black like this and that the whole name of

00:10:29

the resource will be good, that is, black and so

00:10:35

[music]

00:10:39

here it is all black like this but I think there’s

00:10:45

a lot here if we make it white it will be

00:10:47

beautiful more

00:10:48

beautiful I can change the black a little

00:10:51

too black here probably somehow like this

00:10:55

but like this it’s better

00:10:58

already and so here we have a start and here we have a

00:11:03

picture, now we need a normal

00:11:06

picture, not this, this is an avatar,

00:11:08

I think we will have like a picture, well,

00:11:11

some kind of fish here, I’m thinking of

00:11:13

taking it and writing fisher facebook something

00:11:16

like that, but this is for simplicity, you

00:11:18

should think about it yourself how to create like an iphone

00:11:20

they gave that it was beautiful, what was the color of

00:11:22

the background and your logo, and of course,

00:11:26

make the button more beautiful, what to make it

00:11:28

more beautiful, we take the background and select,

00:11:32

for example, well, whatever

00:11:36

100 grams or color we change, just it’s green,

00:11:41

I’ll put it green, after all, in general you already

00:11:44

choose

00:11:45

the color that you like, so the next

00:11:51

thing we need to put a picture I’ll go

00:11:54

create a picture and now we’ll come back and

00:11:56

continue everything I prepared the picture and

00:12:00

placed it in the drawable

00:12:02

here’s my log fish here’s a

00:12:04

picture fisherman handbook

00:12:08

I’ll make it in a hurry maybe I

00:12:10

made mistakes here, like no,

00:12:13

so everything is where we now have a logo

00:12:17

instead of now this avatar, let's

00:12:18

choose where we have here with the

00:12:21

Sursk pad, we'll select now we found our

00:12:25

leg, our project logo and we're looking for where

00:12:29

here we have the vlog fish, we choose because it

00:12:33

swam away because its size is huge,

00:12:35

let's choose the normal size and so

00:12:38

here it is, and the length 16 will be on top and

00:12:43

here the layout comes out times high, that

00:12:45

is, width and height, but let it be

00:12:47

let's try 300

00:12:49

dp and here it seems to be the normal

00:12:53

width 300 g p so normal now

00:12:57

we put it in its place somewhere, it should

00:13:00

be about here, but now it’s

00:13:02

turning out pretty well, so the colors and

00:13:05

I think it’ll probably be possible

00:13:07

to make it darker just like that, a little bit, well, it’s

00:13:17

turning out pretty good and so fish and

00:13:20

God in masses here we have By clicking on the start my button

00:13:24

we will go to the main screen, well, that’s

00:13:28

basically it, and sometimes with this

00:13:32

configuration

00:13:33

the picture is not shown, so what

00:13:36

needs to be done is here imageview and

00:13:38

here is the Sursky pad where our

00:13:41

link to our picture is indicated, we also need to

00:13:45

add here if for you the picture is not

00:13:46

shown

00:13:47

just a resource here is an android resource you see and

00:13:50

here we enter the same path of the picture that

00:13:54

is the firewood was logo fish you see the same thing

00:13:56

only instead of bathtub dryers

00:13:59

just a resource android source everything is now

00:14:02

definitely no problems there will be no problems everything is

00:14:03

ready now we need to do how

00:14:05

first listen to this

00:14:08

start button being pressed and when pressed go to the

00:14:11

screen on activity mainactivity that is the

00:14:14

main screen and so we write the code

00:14:17

and first we need here our many

00:14:20

activities to load our screen for this

00:14:22

it is very simple we write everything here in the

00:14:25

oncreate method immediately after super

00:14:27

oncreate we write setcontentview and we write p

00:14:30

. bark out.

00:14:34

lava activity all this is ready now what do

00:14:39

we need to do now we go lova

00:14:41

activity click on the button and look for

00:14:44

onclicklistener let's

00:14:45

create now onclicklistener who doesn't

00:14:48

remember this is a click listener so

00:14:51

well, its name is creation I like to call

00:14:53

them also onclick and already

00:14:57

and

00:14:58

good click start you will see everything onclick

00:15:01

start

00:15:02

so start I want with a capital letter everything

00:15:06

now if we open those that we ourselves don’t

00:15:08

write because of laziness you see it

00:15:10

is highlighted in yellow here it is created onclick

00:15:12

start if anyone doesn’t remember this is a visual

00:15:16

image this is a text image

00:15:18

of the screen here is our android attribute onclick we have

00:15:22

it They called it onclick start, they

00:15:24

light up yellow because it says

00:15:25

that in our many activities

00:15:27

there is no such method, so if we click

00:15:31

as in the case of android manifest, you

00:15:33

will be prompted and here is Creighton click

00:15:35

event handler

00:15:37

or crate onclick start view or logo

00:15:41

activity, this is what we need 1 click after all,

00:15:43

everything has appeared, you have a listener

00:15:45

to set up when you press the button, the

00:15:48

jump will grow, the code

00:15:50

that is located between these

00:15:52

curly brackets and the code that we have on our

00:15:55

website is simply there, you remember from previous

00:15:57

lessons, to go to the next 9,

00:15:59

to run we need to write

00:16:01

create an intent system message, that is,

00:16:04

as you can see, it is highlighted in red, this

00:16:07

means that I have what I need to

00:16:10

know that I need to import like

00:16:11

these elements, so I direct

00:16:13

the cursor, press control and press alt and enter and the

00:16:20

import class window appears, so the

00:16:24

variable will be us Well, I’ll call it

00:16:26

and so as not to write a long intent and what

00:16:30

we write here, but here we write a new intent, that

00:16:32

is, we create a new activity flag intent,

00:16:35

we want to leave this

00:16:37

activity and move to mainactivity,

00:16:40

which means we write a lot of activity dis dis,

00:16:42

this in English means this, that is,

00:16:44

logo activity this, and already mainactivity

00:16:51

. class because mainactivity is class

00:16:55

. do not forget to close the comma so not

00:16:59

so far

00:17:00

and now just startactivity is a monster

00:17:05

like this and asks us to pass here

00:17:07

the intent with which we want to

00:17:09

start the intent and that is, this variable and

00:17:12

which we just created, that is, there is a

00:17:14

variable there and this is this all the

00:17:16

writings we will come here, we could

00:17:19

immediately take all this and place it

00:17:21

inside here,

00:17:22

but it’s more convenient and so startactivity

00:17:26

everything, when you press the button,

00:17:27

new activities will start and what else can we

00:17:32

do on we can do immediately after

00:17:34

startactivity no world archer no after

00:17:37

startactivity

00:17:38

on destroy method we write this method from the

00:17:42

life cycles of activity if anyone remembers and

00:17:45

here we write finish what does this mean finish

00:17:50

means that this activity

00:17:51

will be completely closed and deleted from

00:17:53

memory if we don’t describe this then when you

00:17:56

press the buttons you know on the phone

00:17:58

there is a back button when pressing the buttons

00:18:01

back when you are on the main screen will

00:18:02

return the initial activity,

00:18:06

this is with the logo and we don’t want that,

00:18:09

so if we press, select the command

00:18:11

finish the when this activity is destroyed,

00:18:14

it will be completely deleted from memory,

00:18:17

so when you press the button on the

00:18:19

main on the main the screen where you

00:18:22

have the entire list just closes

00:18:24

all the offers so well,

00:18:27

basically everything that we have here, let’s

00:18:29

now run it and see what

00:18:30

happened,

00:18:31

I press start and so and so the

00:18:39

main screen opened and why did this

00:18:41

happen and there is no screen that we

00:18:44

only what they created and all this happens

00:18:46

because of the manifest file in the manifesto it is written

00:18:51

that the main screen is the very first screen

00:18:53

that opens here it is

00:18:55

written see the application, that

00:18:58

is, this is our entire application and the first

00:19:00

activities are our mainactivity and

00:19:02

will not resist intent filter android and in

00:19:04

action main and also the android intent

00:19:07

category of the launcher,

00:19:09

which leads to the fact that the first activity is

00:19:12

always launched by my nails,

00:19:13

we don’t want this, we want the

00:19:15

syllable screen to launch, so we

00:19:18

simply what can we do, we

00:19:20

can change the name name to our logo

00:19:25

activity and that’s it, we write here

00:19:31

mainactivity we all just swapped

00:19:39

places now you see that let's

00:19:41

now see what came out of this

00:19:43

so we come back

00:19:45

everything you see now our pharmacies have already opened

00:19:48

and now you have a fischer

00:19:51

fischer handbook

00:19:53

and here is the start button I press the start button and

00:19:56

the application closes with an error look

00:19:59

what the error so we are looking for the logcat

00:20:05

we are looking for it will burst and we see that we have

00:20:09

killed someone here shows mainactivity

00:20:12

here in blue I open you 48 on lines 48

00:20:15

here shows the set support

00:20:17

actionbar

00:20:18

but we had a theme in mainactivity but

00:20:21

actionbar because we have mainactivity

00:20:23

to use action bar

00:20:24

and so we need to put this

00:20:26

topic here, but axin bart copies and paste it

00:20:30

here so that it doesn’t give us an error,

00:20:34

but the launcher here is this one, that is,

00:20:37

the lines that launch our activities

00:20:40

first don’t need to be added here

00:20:42

because mainactivity will not launch

00:20:44

first, now it launches first logo

00:20:46

activity everything is simple, this has been replaced

00:20:48

and it’s ready, let’s launch the start and see what

00:20:54

we got out of it, everything has started,

00:20:58

the base has launched, the first screen with

00:21:01

the logo has launched and we press start, everything

00:21:05

and went to the main screen, here we

00:21:08

already have a list and that’s it, and so on and so on, that’s

00:21:10

all well, everything reacts to

00:21:12

touch and so everything is fine,

00:21:17

but this is still the way we can

00:21:19

create a screen with a logo in the next

00:21:23

lesson we will add a small animation here so

00:21:26

that this logo floats either

00:21:29

from the side to the right from the left or

00:21:32

appears gradually like this and what else can be

00:21:34

added here, instead of a button, we can also

00:21:37

try to make it so that after two or three

00:21:40

seconds it goes to the next tap,

00:21:43

but that’s basically it, everyone,

00:21:47

subscribe to my channel, and if you have

00:21:48

n’t subscribed yet, like and see you

00:21:51

in the next video, bye everyone

00:22:03

[music]

Description:

Разработка Android приложений/Внешний вид приложения/Урок 4 - 7 В этой серии видео будем учится улучшать внешний вид приложения. В этой части создадим экран с логотипом, с этого экрана будем переходить уже на основной экран. ►Скачать Android Studio можно здесь: https://developer.android.com/studio ★ ★ ★ ★ ★ ★ ▼Первые уроки▼★ ★ ★ ★ ★ ★ ★ ►Урок 1: https://www.youtube.com/watch?v=m9rONh99RXE ►Урок 2: https://www.youtube.com/watch?v=KUr4MA_ZtpA ★ ★ ★ ★ ★ ★ ▼Поддержка канала и официальный сайт и соц.сети▼★ ★ ★ ★ ★ ★ ★ ►Телеграм: https://t.me/androidstudioneco ►Mail.ru :https://my.mail.ru/community/androidstudio/?ref= ►Моя веб страница: https://neco-desarrollo.es/ ►Скачать Android Studio можно здесь: ►https://developer.android.com/studio ►Поддержать канал донатом можно здесь: https://www.paypal.com/donate/ ►Поддержать на Патреоне:https://www.patreon.com/join/neco_desarrollo

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