# LoaderQueryRunner added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions) belongs to Maven artifact com.android.support:support-content:28.0.0-alpha1 Summary:[Ctors](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#pubctors)\|[Methods](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#) # LoaderQueryRunner | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ` public final class LoaderQueryRunner ` ` extends Object `` implements `[ContentPager.QueryRunner](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner)` ` |---|-------------------------------------------| | java.lang.Object || | ↳ | android.support.content.LoaderQueryRunner |
*** ** * ** *** A[ContentPager.QueryRunner](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner)that executes queries using a[LoaderManager](https://developer.android.com/reference/android/app/LoaderManager.html). Use this when preparing[ContentPager](https://developer.android.com/reference/android/support/content/ContentPager)to run in an Activity or Fragment scope. ## Summary | ### Public constructors || |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | ` `[LoaderQueryRunner](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#LoaderQueryRunner(android.content.Context, android.app.LoaderManager))`(`[Context](https://developer.android.com/reference/android/content/Context.html)` context, `[LoaderManager](https://developer.android.com/reference/android/app/LoaderManager.html)` loaderMgr) ` | | ### Public methods || |------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` void` | ` `[cancel](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#cancel(android.support.content.Query))`(`[Query](https://developer.android.com/reference/android/support/content/Query)` query) ` Attempt to cancel a (presumably) running query. | | ` boolean` | ` `[isRunning](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#isRunning(android.support.content.Query))`(`[Query](https://developer.android.com/reference/android/support/content/Query)` query) ` | | ` void` | ` `[query](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#query(android.support.content.Query, android.support.content.ContentPager.QueryRunner.Callback))`(`[Query](https://developer.android.com/reference/android/support/content/Query)` query, `[ContentPager.QueryRunner.Callback](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner.Callback)` callback) ` Execute a query. | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#)From class` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` String` | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/content/LoaderQueryRunner#)From interface` `[android.support.content.ContentPager.QueryRunner](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner)` ` |---------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` abstract void` | ` `[cancel](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner#cancel(android.support.content.Query))`(`[Query](https://developer.android.com/reference/android/support/content/Query)` query) ` Attempt to cancel a (presumably) running query. | | ` abstract boolean` | ` `[isRunning](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner#isRunning(android.support.content.Query))`(`[Query](https://developer.android.com/reference/android/support/content/Query)` query) ` | | ` abstract void` | ` `[query](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner#query(android.support.content.Query, android.support.content.ContentPager.QueryRunner.Callback))`(`[Query](https://developer.android.com/reference/android/support/content/Query)` query, `[ContentPager.QueryRunner.Callback](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner.Callback)` callback) ` Execute a query. | || ## Public constructors ### LoaderQueryRunner added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` LoaderQueryRunner (Context context, LoaderManager loaderMgr) ```

| Parameters || |-------------|------------------------| | `context` | `Context`
| | `loaderMgr` | `LoaderManager`
| ## Public methods ### cancel added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void cancel (Query query) ``` Attempt to cancel a (presumably) running query.
| Parameters || |---------|----------------------------------------| | `query` | `Query`: The query in question.
| ### isRunning added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` boolean isRunning (Query query) ```

| Parameters || |---------|----------------| | `query` | `Query`
| | Returns || |-----------|--------| | `boolean` |
| ### query added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void query (Query query, ContentPager.QueryRunner.Callback callback) ``` Execute a query.
| Parameters || |------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `query` | `Query`: The query that will be run. This value should be handed back to the callback when ready to run in the background.
| | `callback` | `ContentPager.QueryRunner.Callback`: The callback that should be called to both execute the query (in the background) and to receive the results (in the foreground).
| - ## Annotations - [ContentPager.CursorDisposition](https://developer.android.com/reference/android/support/content/ContentPager.CursorDisposition) - ## Interfaces - [ContentPager.ContentCallback](https://developer.android.com/reference/android/support/content/ContentPager.ContentCallback) - [ContentPager.QueryRunner](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner) - [ContentPager.QueryRunner.Callback](https://developer.android.com/reference/android/support/content/ContentPager.QueryRunner.Callback) - ## Classes - [ContentPager](https://developer.android.com/reference/android/support/content/ContentPager) - [LoaderQueryRunner](https://developer.android.com/reference/android/support/content/LoaderQueryRunner) - [Query](https://developer.android.com/reference/android/support/content/Query) - [R](https://developer.android.com/reference/android/support/content/R) - [R.attr](https://developer.android.com/reference/android/support/content/R.attr) - [R.bool](https://developer.android.com/reference/android/support/content/R.bool) - [R.color](https://developer.android.com/reference/android/support/content/R.color) - [R.dimen](https://developer.android.com/reference/android/support/content/R.dimen) - [R.drawable](https://developer.android.com/reference/android/support/content/R.drawable) - [R.id](https://developer.android.com/reference/android/support/content/R.id) - [R.integer](https://developer.android.com/reference/android/support/content/R.integer) - [R.layout](https://developer.android.com/reference/android/support/content/R.layout) - [R.string](https://developer.android.com/reference/android/support/content/R.string) - [R.style](https://developer.android.com/reference/android/support/content/R.style) - [R.styleable](https://developer.android.com/reference/android/support/content/R.styleable)