# FullWidthDetailsOverviewSharedElementHelper

Artifact: [androidx.leanback:leanback](https://developer.android.com/jetpack/androidx/releases/leanback) [View Source](https://cs.android.com/search?q=file:androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper.java+class:androidx.leanback.widget.FullWidthDetailsOverviewSharedElementHelper) Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/leanback#1.1.0)

*** ** * ** ***


```
public class FullWidthDetailsOverviewSharedElementHelper extends FullWidthDetailsOverviewRowPresenter.Listener
```

<br />

|---|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object.html) |||
| ↳ | [androidx.leanback.widget.FullWidthDetailsOverviewRowPresenter.Listener](https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter.Listener) ||
|   | ↳ | [androidx.leanback.widget.FullWidthDetailsOverviewSharedElementHelper](https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper) |

*** ** * ** ***

Helper class to assist delayed shared element activity transition for view created by `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter`. User must call `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#setSharedElementEnterTransition(android.app.Activity,java.lang.String,long)` during activity onCreate() and call `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter#setListener(androidx.leanback.widget.FullWidthDetailsOverviewRowPresenter.Listener)`. The helper implements `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter.Listener` and starts delayed activity transition once `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter.Listener#onBindLogo(androidx.leanback.widget.FullWidthDetailsOverviewRowPresenter.ViewHolder)` is called.

## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#FullWidthDetailsOverviewSharedElementHelper()()` |

| ### Public methods |
|---|---|
| `boolean` | `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#getAutoStartSharedElementTransition()()` Returns true if auto startPostponedEnterTransition() when bound to logo. |
| `void` | `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#onBindLogo(androidx.leanback.widget.FullWidthDetailsOverviewRowPresenter.ViewHolder)(https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter.ViewHolder vh)` `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter#notifyOnBindLogo(androidx.leanback.widget.FullWidthDetailsOverviewRowPresenter.ViewHolder)` is called. |
| `void` | `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#setAutoStartSharedElementTransition(boolean)(boolean enabled)` Enable or disable auto startPostponedEnterTransition() when bound to logo. |
| `void` | `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#setSharedElementEnterTransition(android.app.Activity,java.lang.String)( https://developer.android.com/reference/android/app/Activity.html activity, https://developer.android.com/reference/java/lang/String.html sharedElementName )` |
| `void` | `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#setSharedElementEnterTransition(android.app.Activity,java.lang.String,long)( https://developer.android.com/reference/android/app/Activity.html activity, https://developer.android.com/reference/java/lang/String.html sharedElementName, long timeoutMs )` |
| `void` | `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#startPostponedEnterTransition()()` Manually start postponed enter transition. |

## Public constructors

### FullWidthDetailsOverviewSharedElementHelper

Added in 1.1.0

```
public FullWidthDetailsOverviewSharedElementHelper()
```

## Public methods

### getAutoStartSharedElementTransition

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/leanback#1.1.0)

```
public boolean getAutoStartSharedElementTransition()
```

Returns true if auto startPostponedEnterTransition() when bound to logo. When it's disabled, app must call `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#startPostponedEnterTransition()` to kick off windowEnterTransition. By default, it is disabled when there is no windowEnterSharedElementTransition set on the activity.

### onBindLogo

```
public void onBindLogo(FullWidthDetailsOverviewRowPresenter.ViewHolder vh)
```

`https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter#notifyOnBindLogo(androidx.leanback.widget.FullWidthDetailsOverviewRowPresenter.ViewHolder)` is called.

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewRowPresenter.ViewHolder vh` | The ViewHolder that has bound logo view. |

### setAutoStartSharedElementTransition

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/leanback#1.1.0)

```
public void setAutoStartSharedElementTransition(boolean enabled)
```

Enable or disable auto startPostponedEnterTransition() when bound to logo. When it's disabled, app must call `https://developer.android.com/reference/androidx/leanback/widget/FullWidthDetailsOverviewSharedElementHelper#startPostponedEnterTransition()` to kick off windowEnterTransition. By default, it is disabled when there is no windowEnterSharedElementTransition set on the activity.

### setSharedElementEnterTransition

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/leanback#1.1.0)

```
public void setSharedElementEnterTransition(
    Activity activity,
    String sharedElementName
)
```

### setSharedElementEnterTransition

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/leanback#1.1.0)

```
public void setSharedElementEnterTransition(
    Activity activity,
    String sharedElementName,
    long timeoutMs
)
```

### startPostponedEnterTransition

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/leanback#1.1.0)

```
public void startPostponedEnterTransition()
```

Manually start postponed enter transition.