Open the Android tools and select to install those API packages. Then configure your Delphi to use them. It's all clearly documented. In order to target API level 26, the manifest needs the targetSdkVersion changed to 26, as per my article: Why does no one read the documentation , which clearly explains how to do this? It even has images to illustrate the process. DaveNottage, quite right indeed, it's not. Jerry Dodge and Ken White, please read what the question is asking before jumping in and referring to or linking to documentation that has little or nothing to do with the actual question.
Targeting an SDK is required to conform to Google's forthcoming requirements.
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On devices that have touchscreens, you can set a cluster-designated ViewGroup object's android: If you apply this configuration to a cluster, users cannot use the Tab key or arrow keys to navigate into or out of the cluster; they must press the cluster navigation keyboard combination instead. To apply this "focused by default" setting, set a View element's android: Activities and services can use instances of TextToSpeech to dictate and pronounce content.
As of Android 8. You can use this functionality to call attention to specific words as the text-to-speech engine speaks them. To use these text-to-speech engine improvements in your app, register an instance of UtteranceProgressListener. As part of the registration process, include a handler for the onRangeStart method. The text-to-speech engine calls rangeStart to record the point in time at which it expects audio playback of a specific range of text to start.
When the audio for that text range starts playback, your app's onRangeStart method executes. Your app can then respond to this callback, such as by highlighting the text range that's associated with the utterance. For more information about tracking the playback progress of a text-to-speech engine, see the UtteranceProgressListener class reference.
When the system needs to free up disk space, it will start by deleting cached files from apps that are the most over their allocated quota. Thus, if you keep your cached data under your allocated quota, your cached files will be some of the last on the system to be cleared when necessary. When the system is deciding what cached files to delete inside your app, it will consider the oldest files first as determined by modified time. There are also two new behaviors that you can enable on a per-directory basis to control how the system frees up your cached data:.
Finally, when you need to allocate disk space for large files, consider using the new allocateBytes FileDescriptor, long API, which will automatically clear cached files belonging to other apps as needed to meet your request. When deciding if the device has enough disk space to hold your new data, call getAllocatableBytes UUID instead of using getUsableSpace , since the former will consider any cached data that the system is willing to clear on your behalf.
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We've updated content providers to include support for loading a large dataset one page at a time. For example, a photo app with many thousands of images can query for a subset of the data to present in a page.
Each page of results returned by a content provider is represented by a single Cursor object. Both a client and a provider must implement paging to make use of this feature. For detailed information about the changes to content providers, see ContentProvider and ContentProviderClient. The ContentProvider and ContentResolver classes now each include a refresh method, making it easier for clients to know whether the information they request is up-to-date. You can add custom content refreshing logic by extending ContentProvider. Make sure that you override the refresh method to return true , indicating to your provider's clients that you've attempted to refresh the data yourself.
Your client app can explicitly request refreshed content by calling a different method, also called refresh. When calling this method, pass in the URI of the data to refresh. Because you may be requesting data over a network, you should invoke refresh from the client side only when there's a strong indication that the content is stale. The most common reason to perform this type of content refresh is in response to a swipe-to-refresh gesture, explicitly requesting the current UI to display up-to-date content.
These improvements make it easier for your app to comply with the new background execution limits , since you can generally use scheduled jobs to replace the now-restricted background services or implicit broadcast receivers. Updates to JobScheduler include:. For more information about implementing the data store, refer to Custom Data Store. There is a new VolumeShaper class. Use it to perform short automated volume transitions like fade-ins, fade-outs, and cross fades. See Controlling Amplitude with VolumeShaper to learn more.
sip - Linphone Audio calling not working in API LEVEL 26 android - Stack Overflow
Audio apps share the audio output on a device by requesting and abandoning audio focus. An app handles changes in focus by starting or stopping playback, or ducking its volume. There is a new AudioFocusRequest class. Using this class as the parameter of requestAudioFocus , apps have new capabilites when handling changes in audio focus: A new getMetrics method returns a PersistableBundle object containing configuration and performance information, expressed as a map of attributes and values.
The getMetrics method is defined for these media classes:. Metrics are collected separately for each instance and persist for the lifetime of the instance. If no metrics are available the method returns null. The actual metrics returned depend on the class. It includes a second parameter that specifies a seek mode:. Metadata can be useful for offline processing. For example, gyro signals from the sensor could be used to perform video stabilization. Instead, the app passes a ByteBuffer with an associated timestamp to the writeSampleData method.
The timestamp must be in the same time base as the video and audio tracks. When using MediaExtractor to extract the file with metadata track, the mime format of the metadata will be extracted into MediaFormat. In fact, a documents provider can even provide access to files that reside on network storage or that use a protocol like Media Transfer Protocol MTP.
The SAF can open a file to get a native seekable file descriptor. The SAF then delivers discrete bytes requests to the documents provider. This feature allows a documents provider to return the exact range of bytes that a media player app has requested instead of caching the entire file in advance. To use this feature, you need to call the new StorageManager. The SAF invokes the callback any time a client application performs file operations on the file descriptor returned from the documents provider. However, because the returned URI is backed by a DocumentsProvider , media collection managers can access the document directly, without having to traverse trees of scoped directories.
As a result, the media managers can perform file operations on the document significantly more quickly. The getDocumentUri method only locates media files; it doesn't grant apps permission to access those files. To learn more about how to obtain access permission to media files, see the reference documentation. When using the Storage Access Framework in Android 8. The method returns this path in a DocumentsContract. Path object. In cases where a file system has multiple defined paths to the same document, the method returns the path that is used most often to reach the document with the given ID.