Safeareaview react native android

Safeareaview react native android

⚠️ This library is deprecated. It is no longer used in React Navigation and it has been succeeded by the excellent react-native-safe-area-context. Please use react-native-safe-area-context instead, or you are likely to have a bad time.

This library provides automatic padding when a view intersects with a safe area (notch, status bar, home indicator).

💡 The latest release is currently marked as 1.1.1 and depends on react-native-safe-area-context@^0.7.3. To use react-native-safe-area-context@^1.0.0, you will need to install react-native-safe-area-view@2.0.0 — this currently has the next tag on npm.

In the Expo managed workflow:

In bare React Native projects:

Next, you need to link react-native-safe-area-context . If you are using autolinking, run npx pod-install again. If not, follow these instructions. Then re-build your app binary.

First you need to wrap the root of your app with the SafeAreaProvider .

Now you can wrap components that touch any edge of the screen with a SafeAreaView .

Look, I’m safe! Not under a status bar or notch or home indicator or anything! Very cool

Sometimes you will observe unexpected behavior and jank because SafeAreaView uses onLayout then calls measureInWindow on the view. If you know your view will touch certain edges, use forceInset to force it to apply the inset padding on the view.

Yeah, I’m safe too!

forceInset takes an object with the keys top | bottom | left | right | vertical | horizontal and the values ‘always’ | ‘never’ . Or you can override the padding altogether by passing an integer.

Accessing safe area inset values

Sometimes it’s useful to know what the insets are for the top, right, bottom, and left of the screen. See the documentation for react-native-safe-area-context for more information.

About

⚠️ Deprecated: use the successor react-native-safe-area-context instead!

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Safeareaview react native android

A flexible way to handle safe area, also works on Android and Web!

You then need to link the native parts of the library for the platforms you are using.

Linking in React Native >= 0.60

Linking the package is not required anymore with Autolinking.

iOS Platform:

Linking in React Native Manually link the library on iOS

Either follow the instructions in the React Native documentation to manually link the framework or link using Cocoapods by adding this to your Podfile :

Make the following changes:

On top, where imports are:

Add the SafeAreaContextPackage class to your list of exported packages.

Note Before 3.1.9 release of safe-area-context, Building for React Native 0.59 would not work due to missing header files. Use >= 3.1.9 to work around that.

This library has 2 important concepts, if you are familiar with React Context this is very similar.

The SafeAreaProvider component is a View from where insets provided by Consumers are relative to. This means that if this view overlaps with any system elements (status bar, notches, etc.) these values will be provided to descendent consumers. Usually you will have one provider at the top of your app.

Consumers are components and hooks that allow using inset values provided by the nearest parent Provider. Values are always relative to a provider and not to these components.

SafeAreaView is the preferred way to consume insets. This is a regular View with insets applied as extra padding or margin. It offers better performance by applying insets natively and avoids flickers that can happen with the other JS based consumers.

useSafeAreaInsets offers more flexibility, but can cause some layout flicker in certain cases. Use this if you need more control over how insets are applied.

You should add SafeAreaProvider in your app root component. You may need to add it in other places like the root of modals and routes when using react-native-screens .

Note that providers should not be inside a View that is animated with Animated or inside a ScrollView since it can cause very frequent updates.

Accepts all View props. Has a default style of .

Optional, defaults to null .

Can be used to provide the initial value for frame and insets, this allows rendering immediatly. See optimization for more information on how to use this prop.

SafeAreaView is a regular View component with the safe area insets applied as padding or margin.

Padding or margin styles are added to the insets, for example style=<> on a SafeAreaView that has insets of 20 will result in a top padding of 30.

Accepts all View props.

Optional, array of top , right , bottom , and left . Defaults to all.

Sets the edges to apply the safe area insets to.

For example if you don’t want insets to apply to the top edge because the view does not touch the top of the screen you can use:

Optional, padding (default) or margin .

Apply the safe area to either the padding or the margin.

This can be useful for example to create a safe area aware separator component:

Returns the safe area insets of the nearest provider. This allows manipulating the inset values from JavaScript. Note that insets are not updated synchronously so it might cause a slight delay for example when rotating the screen.

Returns the frame of the nearest provider. This can be used as an alternative to the Dimensions module.

React Context with the value of the safe area insets.

Can be used with class components:

Higher order component that provides safe area insets as the insets prop.

React Context with the value of the safe area frame.

Insets and frame of the window on initial render. This can be used with the initialMetrics from SafeAreaProvider . See optimization for more information.

NOTE: This value can be null or out of date as it is computed when the native module is created.

Use useSafeAreaInsets instead.

Use SafeAreaInsetsContext.Consumer instead.

Use SafeAreaInsetsContext instead.

Use initialWindowMetrics instead.

If you are doing server side rendering on the web you can use initialMetrics to inject insets and frame value based on the device the user has, or simply pass zero values. Since insets measurement is async it will break rendering your page content otherwise.

If you can, use SafeAreaView . It’s implemented natively so when rotating the device, there is no delay from the asynchronous bridge.

To speed up the initial render, you can import initialWindowMetrics from this package and set as the initialMetrics prop on the provider as described in Web SSR. You cannot do this if your provider remounts, or you are using react-native-navigation .

This library includes a built in mock for Jest. It will use the following metrics by default:

To use it, add the following code to the jest setup file:

To have more control over the test values it is also possible to pass initialMetrics to SafeAreaProvider to provide mock data for frame and insets.

Источник

SafeAreaView not working on Android. Giving wrong paddings #17371

Comments

rogerkerse commented Dec 27, 2017 •

Is this a bug report?

Have you read the Contributing Guidelines?

Environment

Environment:
OS: macOS High Sierra 10.13.2
Node: 9.3.0
Yarn: 1.3.2
npm: 5.5.1
Watchman: 4.9.0
Xcode: Xcode 9.2 Build version 9C40b
Android Studio: Not Found

Packages: (wanted => installed)
react: 16.0.0 => 16.0.0
react-native: 0.51.0 => 0.51.0

Target Platform: Android (8.1.0) Pixel 2 XL

Steps to Reproduce

1. Add onLayout function like this

Expected Behavior

Bottom padding should be calculated 0.

Actual Behavior

The bottom padding comes out 27.9999 which is half the size of bottom soft navigation bar so it does not make sense. (Top status bar seems about 28 pixels, but y gets value of 0).

Reproducible Demo

(Paste the link to an example project and exact instructions to reproduce the issue.)

The text was updated successfully, but these errors were encountered:

waquidvp commented Dec 29, 2017 •

The way SafeAreaView is set up, on Android it shouldn’t have any affect. SafeAreaView only has affect on iOS, specifically on the iPhone X. It is created so that your view doesn’t get in the way of the top notch and the home indicator.

rogerkerse commented Dec 31, 2017

@waquidvp But if you try it out it gives bottom padding, which has an effect

burkeshartsis commented Feb 21, 2018 •

Currently SafeAreaView on android just returns a View 😢

Update: Still just returns a view on Android but everything lives in one component now.

react-native-bot commented Feb 24, 2018

Thanks for posting this! It looks like you may not be using the latest version of React Native, v0.53.0, released on January 2018. Can you make sure this issue can still be reproduced in the latest version?

I am going to close this, but please feel free to open a new issue if you are able to confirm that this is still a problem in v0.53.0 or newer.

hramos commented Mar 26, 2018

It does not look like this has been reproduced in 0.54 or later. There has been no follow up from the author in over seven days, so we’re closing this issue.

Furthermore, SAV is just a View on Android.

Thomas-Calliweb commented Jul 12, 2018 •

Hi, i’ve got this kind of issue, i’m testing my app on my android phone and it has a notch (one plus 6) at the top.

SafeAreaView will be usefull to be effective on android too, and if it is not possible, what is the solution to prevent absolute element to be under the topbar ?

szemannp commented Sep 25, 2018 •

Hey,
this issue becomes more relevant as the notched Android devices are spreading — OP6, Huawei Pro 20, LG G7 etc.

amerllica commented Oct 2, 2018 •

In the SafeAreaView Docs was told:

It is currently only applicable to iOS devices with iOS version 11 or later.

So now I definitely use it in my project but I use Platform to recognize device platform and for Android, I make a manual safe area for the status bar.

pribeh commented Oct 20, 2018 •

@amalChandran I’m doing the same. This is a good example of how to adapt safeareaview:

sgtpepper43 commented Nov 6, 2018 •

There’s a new api for android devices called DisplayCutout that can be used for dealing with notches. We should consider using this with SafeAreaView . I would post this in a new issue or feature request but I honestly cannot figure out where I’m supposed to do that.

morenoh149 commented Dec 22, 2018

@sgtpepper43 start an issue as a discussion, see below

yodaheis commented Feb 16, 2019

Can we use the difference between Dimensions.get(‘screen’) and Dimensions.get(‘window’) to calculate status bar height and set safe margin according to the orientation?

akaahmedkamal commented Feb 18, 2019

@yodaheis Dimensions.get(‘screen’) returns the width/height of the entire screen without status bar, soft menu bar or navigation bar while Dimensions.get(‘window’) returns the width/height of the application view «screen size without status bar, soft menu bar or navigation bar while» but when it comes to notches I’m not sure but your suggestion makes sense for me I may give it a try.

sgtpepper43 commented Feb 18, 2019 •

There’s already an API to get notches on Android, we don’t need to do any weird hacks to do it. SafeAreaView just needs to be updated to use it.

akaahmedkamal commented Feb 18, 2019

@sgtpepper43 notches API is available only in Android 9.0!! please tell me if I’m wrong?

akaahmedkamal commented Feb 18, 2019 •

TL;DR
I tested this out and what I ended up with is that the notch in Android is just a part of the status bar so dealing with StatusBar.currentHeight makes your life easier when dealing with notches, StatusBar.currentHeight on a normal device returns 24 while on a notched device it returns 48 keep in mind this is the behavior I got on a simulated devices running Android 9.0 so I’m not sure if it’s the default behavior.
But, SafeAreaView adds some extra padding on Android so I ended up with something like that

this gave me the following results on Android

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Создание мобильного приложения на React Native

Всем привет. Это будет первой частью в создании нашего мобильного приложения.

Мобильное приложение мы будем делать с помощью react native и expo. Мы создадим не большое новостное приложение. Для этого мы будем использовать php через rest api.

В нашем приложении мы будем выводить статьи, которые будут находиться в phpmyadmin.

Что такое expo?

Expo, представляет собой набор инструментов, библиотек и сервисов, которые позволяют создавать собственные приложения для iOS и Android с помощью JavaScript. Звучит многообещающе. Проще говоря, Expo помогает вам просматривать проекты, пока вы еще их разрабатываете. Expo CLI создает URL-адрес для разработки (аналогичный локальному хосту в Интернете), который затем можно открыть в клиенте Expo для предварительного просмотра приложения.

Установка Expo

Перед тем, как установить expo, убедитесь что вы установили npm.

Expo дает вам варианты. Вы можете предварительно просмотреть свое приложение через клиентское приложение Expo на своем мобильном устройстве или с помощью симулятора iOS / Android на своем компьютере. Я при создании приложения использовал expo на android.

Создание expo приложения

После установки Expo открывается интерфейс Expo CLI и позволяет выбрать имя проекта и шаблон. Мы выберем пустую страницу.

После этого, expo запустит локальный сервер разработки, откроет новое окно для просмотра сервера и предоставит вам QR-код, чтобы открыть ваш проект на вашем мобильном устройстве. Либо вы можете зарегистрироваться в мобильном приложении и expo cli, и он в мобильном приложение автоматически покажет текущие разработки.

Чтобы войти в expo на вашем компьютере используйте эту команду:

Установка react-navigation

Чтобы мы могли переходить с одного экрана на другой, нам нужно скачать react-nativation:

Начало разработки

Теперь давайте начнем нашу разработку.

Первое, что мы сделаем — это откроем App.js (наш главный файл).

Верстка

Чтобы наше приложение выглядело привлекательным, мы добавим пару элементов и добавим к ним стили.

Сначала добавим заголовок:

Теперь давайте добавим блок с выводом статей и стилизуем его.

На этой наш урок заканчивается.

В следующем уроке мы сделаем вывод данных mysql.

Если вам интересно, как все получиться перейдите и скачайте это приложение, там будет вкладка с новостями — мобильное приложение

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