Android Behavior Changes | Android Developers
Simple, frictionless video meetings from Google. Collaborate and develop relationships with your team regardless of where they are in the world. Key features. One option is a third party app called APNdroid, from the Android Market, you by simulating the soft reset process and closing running processes with one tap. There are other reasons why some apps will not be available, such as . Go to Settings / Date & time and untick the 'Automatic' box at the top. Our Android apps, like all apps in the Google Play store, are delivered by Google "Android Apps & Games, Problem Buying or Downloading, Request a call" Changing your screen to not sleep (or set the maximum period before sleep) " install > start > download supplemental data" process for each app one at a time.
If TalkBack still doesn't recognize gestures performed on these View objects, override performAccessibilityAction. Accessibility services are now aware of all ClickableSpan instances within your app's TextView objects.
To learn more about how to make your app more accessible, see Accessibility. Previously they had no Content-Length header. For example, it converts http: A custom proxy selector set via ProxySelector.
As a result, proxy selection may only be based on those values. URIs cannot contain empty labels. Previously, the platform supported a workaround to accept empty labels in host names, which is an illegal use of URIs. This workaround was for compatibility with older libcore releases. This is malformed and will not be accepted in future Android releases.
The system no longer sends user-agent and proxy-authorization headers from a tunneled request to the proxy server. The system no longer sends a proxy-authorization header on a tunneled Http s URLConnection to the proxy when setting up the tunnel.
Instead, the system generates a proxy-authorization header, and sends it to the proxy when that proxy sends HTTP in response to the initial request. Similarly, the system no longer copies the user-agent header from the tunneled request to the proxy request that sets up the tunnel.
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Instead, the library generates a user-agent header for that request. DatagramPacket method throws a SocketException if the previously executed connect method failed. Prior to Android 8. For consistency, both calls now throw a SocketException. Some hosts that block port 7 TCP Echosuch as google. For truly unreachable hosts, this change means that twice the amount of time is spent before the call returns. The getBytes method makes no assumptions as to the number of bytes received.
Therefore, apps should not rely on any minimum or maximum number of bytes returned. Instead, they should evaluate the length of the resulting array. If a remote device does not provide a scan response, fewer than 60 bytes may be returned as well. Seamless Connectivity Android 8. Stability and reliability improvements. A more intuitively readable UI.
A single, consolidated Wi-Fi Preferences menu. On compatible devices, automatic activation of Wi-Fi when a high quality saved network is nearby. The platform no longer supports SSLv3. The list of allowed syscalls is restricted to those exposed through bionic. Although there are several other syscalls provided for backwards compatibility, we recommend against their use. Your app's WebView objects now run in multiprocess mode. Web content is handled in a separate, isolated process from the containing app's process for enhanced security.
You can no longer assume that APKs reside in directories whose names end in -1 or Apps should use sourceDir to get the directory, and not rely on the directory format directly. For information about security enhancements related to use of native libraries, see Native Libraries.
In addition, Android 8. To determine whether an unknown source can install apps using the package installer, you should instead use the return value of canRequestPackageInstalls. Managed profiles created on devices running Android 8. For this reason, Android no longer falls back to using the CN.
To verify a hostname, the server must present a certificate with a matching SAN. Certificates that don't contain a SAN matching the hostname are no longer trusted. Blocking operations on the main thread can cause pauses or jank. The StrictMode class is a development tool that helps developers to detect problems in their code. In Android 9 and higher, StrictMode detects network violations caused by network address lookups that require name resolution.
You should not ship your apps with StrictMode enabled. If you do, then your apps can experience exceptions, such as NetworkOnMainThreadException when using the detectNetwork or detectAll methods to get a policy that detects network violations. Resolving a numeric IP address isn't considered a blocking operation. Numeric IP address resolution works the same as in versions before Android 9.
Socket tagging In platform versions lower than Android 9, if a socket is tagged using the setThreadStatsTag method, the socket is untagged when it's sent to another process using binder IPC with a ParcelFileDescriptor container. This change can affect network traffic statistics, for example, when using the queryDetailsForUidTag method.
If you want to retain the behavior of the previous versions, which untags a socket that is sent to another process, you can call untagSocket before sending the socket. Reported amount of available bytes in socket The available method returns 0 when it's called after invoking the shutdownInput method. This limited information made it difficult to determine if using a VPN would result in charges to the app's user. In Android 9 and higher, when a VPN calls the setUnderlyingNetworks method, the Android system merges the transports and capabilities of any underlying networks and returns the result as the effective network capabilities of the VPN network.
The reason is to ensure consistency with some devices that don't have these files at all. If you attempt to start an activity without passing this flag, the activity does not start, and the system prints a message to the log. The flag requirement has always been the intended behavior, and was enforced on versions lower than Android 7. A bug in Android 7.
Screen rotation changes Beginning with Android 9, there are significant changes to the portrait rotation mode. The portrait mode has been renamed rotation lock and it is active when auto-rotate is toggled off. There are no changes to auto-rotate mode. When the device is in rotation lock mode, users can lock their screen to any rotation supported by the top, visible Activity. An Activity should not assume it will always be rendered in portrait. If the top Activity can be rendered in multiple rotations in auto-rotate mode, the same options should be available in rotation locked mode, with some exceptions based on the Activity's screenOrientation setting see the table below.
The screen orientation preference can be set at the Activity level in the Android Manifestor programmatically with setRequestedOrientation. The rotation lock mode works by setting the user rotation preference which the WindowManager uses when handling Activity rotation.
The user rotation preference might be changed in the following cases. Note that there is a bias to return to the device's natural rotation, which is normally portrait for phone form factor devices: When the user accepts a rotation suggestion the rotation preference changes to the suggestion. When the user switches to a forced portrait app including the lock screen or the launcher the rotation preference changes to portrait.
The following table summarizes rotation behavior for the common screen orientations: Screen Orientation Behavior unspecified, user In auto-rotate and rotation lock the Activity can be rendered in portrait or landscape and the reverse.
Fix account sync issues
Expect to support both portrait and landscape layouts. Expect to support only landscape layouts.
- Behavior changes: all apps
- Android 8.0 Behavior Changes
Expect to support only portrait layouts. Only use this in exceptional circumstances with very careful UX consideration. This change has no effect on the great majority of apps that do not target Android 9 or higher. However, the change can affect certain apps that use a nonstandard ClassLoader structure, even if the apps do not target Android 9 or higher. An app can be affected if it uses a non-standard ClassLoader that explicitly delegates to the system ClassLoader.
These apps need to delegate to the app ClassLoader instead when looking for classes in org. To prevent similar problems in the future, apps should in general load classes through the app ClassLoader rather than accessing the system ClassLoader directly.