The rest of this document introduces the following concepts: For more information about permissions, see Location, camera, and Bluetooth connection. An app can request permission to access device data such as the device's.TheĪpps must also be signed with the same certificate. Same user ID can also arrange to run in the same Linux process and share the same VM. To conserve system resources, apps with the They are able to access each other's files. It's possible to arrange for two apps to share the same Linux user ID, in which case.However, there are ways for an app to share The system it is not given permission for. This creates a very secure environment in which an app can't access parts of That is,Įach app, by default, has access only to the components that it requires to do its work and The Android system implements the principle of least privilege. Needed or when the system must recover memory for other apps. Of the app's components need to be executed, and then shuts down the process By default, every app runs in its own Linux process.Each process has its own virtual machine (VM), so an app's code runs in isolation from.The system sets permissions for all the files in anĪpp so that only the user ID assigned to that app can access them. By default, the system assigns each app a unique Linux user ID, which is used only by.The Android operating system is a multi-user Linux system in which each app is a.Play, for example, Google Play's servers generate optimized APKs that contain only the resources andĬode that are required by the particular device requesting installation of the app.Įach Android app lives in its own security sandbox, protected by When distributing your app through Google Itĭefers APK generation and signing to a later stage. An AAB is a publishing format and can't be installed on Android devices. The contents of an Android app project, including some additional metadata that isn't required at The contents of an Android app required at runtime, and it is the file that Android-poweredĪn Android App Bundle, which is an archive file with an. Your code along with any data and resource files into an APK or an Android App Bundle.Īn Android package, which is an archive file with an. 4.8.4.4.Android apps can be written using Kotlin, the Java programming language, and C++ languages.4.8.4.4.2 A link or button containing nothing but the image.4.8.4.4 Requirements for providing text to act as an alternative for images.4.8.4.3.13 Reacting to environment changes.4.8.4.3.12 Normalizing the source densities.4.8.4.3.8 Creating a source set from attributes.4.8.4.3.6 Preparing an image for presentation.4.7.3 Attributes common to ins and del elements.4.6.6.1 The ` Ping-From` and ` Ping-To` headers.4.6.2 Links created by a and area elements.4.2.7 Interactions of styling and scripting.4.2.5.4 Specifying the document's character encoding.4.2.4.6 Providing users with a means to follow hyperlinks created using the link.4.2.4.3 Fetching and processing a resource.3.2.9 Requirements related to ARIA and to platform accessibility APIs.3.2.8.2 User agent conformance criteria.3.2.8.1 Authoring conformance criteria for bidirectional-algorithm formatting characters.3.2.8 Requirements relating to the bidirectional algorithm.3.2.7 The innerText and outerText properties. ![]() 3.2.6.6 Embedding custom non-visible data with the data-* attributes.3.1.4 Reporting document loading status.3.1.2 The DocumentOrShadowRoot interface.2.7.8 StructuredDeserializeWithTransfer ( serializeWithTransferResult,.2.7.7 StructuredSerializeWithTransfer ( value, transferList.2.7.6 StructuredDeserialize ( serialized, targetRealm [ ,.2.7.5 StructuredSerializeForStorage ( value ).2.7.3 StructuredSerializeInternal ( value, forStorage [ ,.2.6.3.3 The HTMLOptionsCollection interface.2.6.3.2 The HTMLFormControlsCollection interface.2.6.3.1.1 ] ( thisArgument, argumentsList ).2.6.3.1 The HTMLAllCollection interface.2.6.1 Reflecting content attributes in IDL attributes. ![]() 2.5.3 Extracting character encodings from meta elements.2.5.2 Determining the type of a resource.2.3.4.6 Lists of floating-point numbers.2.3.4.5 Nonzero percentages and lengths.2.3.3 Keywords and enumerated attributes.2.1.11 Interactions with XPath and XSLT.1.11.3 Restrictions on content models and on attribute values.1.11 Conformance requirements for authors.1.10.3 How to catch mistakes when writing HTML: validators and conformance checkers.1.10.2 Common pitfalls to avoid when using the scripting APIs.1.10.1 Writing secure applications with HTML.1.7.2 Compliance with other specifications.1.7.1 Serializability of script execution.Intellectual property rights Full table of contents. ![]()
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