Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) Deprecated in [API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) # FragmentHostCallback *** ** * ** *** Kotlin \|[Java](https://developer.android.com/reference/android/app/FragmentHostCallback "View this page in Java") ``` abstract class FragmentHostCallback : FragmentContainer ``` |---|---|---| | [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||| | ↳ | [android.app.FragmentContainer](https://developer.android.com/reference/kotlin/android/app/FragmentContainer) || | | ↳ | [android.app.FragmentHostCallback](https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#) | *** ** * ** *** | **This class was deprecated in API level 28.** | | Use the [Support Library](https://developer.android.com/tools/extras/support-library.html) androidx.fragment.app.FragmentHostCallback Integration points with the Fragment host. Fragments may be hosted by any object; such as an `https://developer.android.com/reference/kotlin/android/app/Activity`. In order to host fragments, implement `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#`, overriding the methods applicable to the host. ## Summary | Public constructors || |---|---| | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#FragmentHostCallback(android.content.Context,%20android.os.Handler,%20kotlin.Int)(context: https://developer.android.com/reference/kotlin/android/content/Context.html#!, handler: https://developer.android.com/reference/kotlin/android/os/Handler.html#!, windowAnimations: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`
| | Public methods || |---|---| | open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onAttachFragment(android.app.Fragment)(fragment: https://developer.android.com/reference/kotlin/android/app/Fragment!)` Called when a `https://developer.android.com/reference/kotlin/android/app/Fragment` is being attached to this host, immediately after the call to its `https://developer.android.com/reference/kotlin/android/app/Fragment#onAttach(android.content.Context)` method and before `https://developer.android.com/reference/kotlin/android/app/Fragment#onCreate(android.os.Bundle)`. | | open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onDump(kotlin.String,%20java.io.FileDescriptor,%20java.io.PrintWriter,%20kotlin.Array)(prefix: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html!, fd: https://developer.android.com/reference/kotlin/java/io/FileDescriptor.html#!, writer: https://developer.android.com/reference/kotlin/java/io/PrintWriter.html#!, args: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html!)` Print internal state into the given stream. | | open T? | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onFindViewById(kotlin.Int)(id: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)` Return the view with the given resource ID. | | abstract E? | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onGetHost()()` Return the object that's currently hosting the fragment. | | open [LayoutInflater](https://developer.android.com/reference/kotlin/android/view/LayoutInflater.html#)! | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onGetLayoutInflater()()` Return a `https://developer.android.com/reference/kotlin/android/view/LayoutInflater.html#`. | | open [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onGetWindowAnimations()()` Return the window animations. | | open [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onHasView()()` Return `true` if the container holds any view. | | open [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onHasWindowAnimations()()` Return `true` if there are window animations. | | open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onInvalidateOptionsMenu()()` Invalidates the activity's options menu. | | open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onRequestPermissionsFromFragment(android.app.Fragment,%20kotlin.Array,%20kotlin.Int)(fragment: https://developer.android.com/reference/kotlin/android/app/Fragment, permissions: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html, requestCode: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)` Requests permissions from the given fragment. | | open [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onShouldSaveFragmentState(android.app.Fragment)(fragment: https://developer.android.com/reference/kotlin/android/app/Fragment!)` Return `true` if the fragment's state needs to be saved. | | open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onStartActivityFromFragment(android.app.Fragment,%20android.content.Intent,%20kotlin.Int,%20android.os.Bundle)(fragment: https://developer.android.com/reference/kotlin/android/app/Fragment!, intent: https://developer.android.com/reference/kotlin/android/content/Intent.html#!, requestCode: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html, options: https://developer.android.com/reference/kotlin/android/os/Bundle.html#!)` Starts a new `https://developer.android.com/reference/kotlin/android/app/Activity` from the given fragment. | | open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onStartIntentSenderFromFragment(android.app.Fragment,%20android.content.IntentSender,%20kotlin.Int,%20android.content.Intent,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20android.os.Bundle)(fragment: https://developer.android.com/reference/kotlin/android/app/Fragment!, intent: https://developer.android.com/reference/kotlin/android/content/IntentSender.html#!, requestCode: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html, fillInIntent: https://developer.android.com/reference/kotlin/android/content/Intent.html#?, flagsMask: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html, flagsValues: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html, extraFlags: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html, options: https://developer.android.com/reference/kotlin/android/os/Bundle.html#!)` Starts a new `https://developer.android.com/reference/kotlin/android/content/IntentSender.html#` from the given fragment. | | open [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | `https://developer.android.com/reference/kotlin/android/app/FragmentHostCallback#onUseFragmentManagerInflaterFactory()()` Return `true` if the FragmentManager's LayoutInflaterFactory should be used. | ## Public constructors ### FragmentHostCallback Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` FragmentHostCallback(     context: Context!,     handler: Handler!,     windowAnimations: Int) ``` ## Public methods ### onAttachFragment Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onAttachFragment(fragment: Fragment!): Unit ``` **Deprecated:** *Deprecated in Java.* Called when a `https://developer.android.com/reference/kotlin/android/app/Fragment` is being attached to this host, immediately after the call to its `https://developer.android.com/reference/kotlin/android/app/Fragment#onAttach(android.content.Context)` method and before `https://developer.android.com/reference/kotlin/android/app/Fragment#onCreate(android.os.Bundle)`. ### onDump Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onDump(     prefix: String!,     fd: FileDescriptor!,     writer: PrintWriter!,     args: Array! ): Unit ``` **Deprecated:** *Deprecated in Java.* Print internal state into the given stream. | Parameters || |---|---| | `prefix` | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)!: Desired prefix to prepend at each line of output. | | `fd` | [FileDescriptor](https://developer.android.com/reference/kotlin/java/io/FileDescriptor.html#)!: The raw file descriptor that the dump is being sent to. | | `writer` | [PrintWriter](https://developer.android.com/reference/kotlin/java/io/PrintWriter.html#)!: The PrintWriter to which you should dump your state. This will be closed for you after you return. | | `args` | [Array](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html)\<[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)!\>!: additional arguments to the dump request. | ### onFindViewById Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onFindViewById(id: Int): T? ``` **Deprecated:** *Deprecated in Java.* Return the view with the given resource ID. May return `null` if the view is not a child of this container. | Return || |---|---| | `T?` | This value may be `null`. | ### onGetHost Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` abstract fun onGetHost(): E? ``` **Deprecated:** *Deprecated in Java.* Return the object that's currently hosting the fragment. If a `https://developer.android.com/reference/kotlin/android/app/Fragment` is hosted by a `https://developer.android.com/reference/kotlin/android/app/Activity`, the object returned here should be the same object returned from `https://developer.android.com/reference/kotlin/android/app/Fragment#getActivity()`. | Return || |---|---| | `E?` | This value may be `null`. | ### onGetLayoutInflater Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onGetLayoutInflater(): LayoutInflater! ``` **Deprecated:** *Deprecated in Java.* Return a `https://developer.android.com/reference/kotlin/android/view/LayoutInflater.html#`. See `https://developer.android.com/reference/kotlin/android/app/Activity#getLayoutInflater()`. ### onGetWindowAnimations Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onGetWindowAnimations(): Int ``` **Deprecated:** *Deprecated in Java.* Return the window animations. ### onHasView Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onHasView(): Boolean ``` **Deprecated:** *Deprecated in Java.* Return `true` if the container holds any view. ### onHasWindowAnimations Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onHasWindowAnimations(): Boolean ``` **Deprecated:** *Deprecated in Java.* Return `true` if there are window animations. ### onInvalidateOptionsMenu Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onInvalidateOptionsMenu(): Unit ``` **Deprecated:** *Deprecated in Java.* Invalidates the activity's options menu. See `https://developer.android.com/reference/kotlin/android/app/Activity#invalidateOptionsMenu()` ### onRequestPermissionsFromFragment Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onRequestPermissionsFromFragment(     fragment: Fragment,     permissions: Array,     requestCode: Int ): Unit ``` **Deprecated:** *Deprecated in Java.* Requests permissions from the given fragment. See `https://developer.android.com/reference/kotlin/android/app/Activity#requestPermissions(kotlin.Array,%20kotlin.Int)` | Parameters || |---|---| | `fragment` | [Fragment](https://developer.android.com/reference/kotlin/android/app/Fragment): This value cannot be `null`. | | `permissions` | [Array](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html)\<[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)!\>: This value cannot be `null`. | ### onShouldSaveFragmentState Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onShouldSaveFragmentState(fragment: Fragment!): Boolean ``` **Deprecated:** *Deprecated in Java.* Return `true` if the fragment's state needs to be saved. ### onStartActivityFromFragment Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onStartActivityFromFragment(     fragment: Fragment!,     intent: Intent!,     requestCode: Int,     options: Bundle! ): Unit ``` **Deprecated:** *Deprecated in Java.* Starts a new `https://developer.android.com/reference/kotlin/android/app/Activity` from the given fragment. See `https://developer.android.com/reference/kotlin/android/app/Activity#startActivityForResult(android.content.Intent,%20kotlin.Int)`. ### onStartIntentSenderFromFragment Added in [API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) Deprecated in [API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onStartIntentSenderFromFragment(     fragment: Fragment!,     intent: IntentSender!,     requestCode: Int,     fillInIntent: Intent?,     flagsMask: Int,     flagsValues: Int,     extraFlags: Int,     options: Bundle! ): Unit ``` **Deprecated:** *Deprecated in Java.* Starts a new `https://developer.android.com/reference/kotlin/android/content/IntentSender.html#` from the given fragment. See android.app.Activity#startIntentSender(android.content.IntentSender,android.content.Intent,int,int,int,android.os.Bundle). | Parameters || |---|---| | `fillInIntent` | [Intent](https://developer.android.com/reference/kotlin/android/content/Intent.html#)?: This value may be `null`. | ### onUseFragmentManagerInflaterFactory Added in [API level 23](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` open fun onUseFragmentManagerInflaterFactory(): Boolean ``` **Deprecated:** *Deprecated in Java.* Return `true` if the FragmentManager's LayoutInflaterFactory should be used.