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Recommend using AlwaysScrollableScrollPhysics with RefreshIndicator (#8498)

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Using these physics avoids a problem whereby the scroll view isn't scrollable
due to lack of content and therefore cannot trigger the refresh indicator.

Fixes #8432
This commit is contained in:
Adam Barth 2017-03-01 11:04:42 -08:00 committed by GitHub
parent fcf6740851
commit 0b7845a5ac
1 changed files with 14 additions and 1 deletions
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15
packages/flutter/lib/src/material/refresh_indicator.dart
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@ -54,7 +54,20 @@ enum _RefreshIndicatorMode {
/// scrollable's contents and then complete the [Future] it returns. The refresh
/// indicator disappears after the callback's [Future] has completed.
///
/// A [RefreshIndicator] can only be used with a vertical scroll view (the xxxxxxx.
/// If the [Scrollable] might not have enough content to overscroll, consider
/// settings its `physics` property to [AlwaysScrollableScrollPhysics]:
///
/// ```dart
/// new ListView(
/// physics: const AlwaysScrollableScrollPhysics(),
/// children: ...
// )
/// ```
///
/// Using [AlwaysScrollableScrollPhysics] will ensure that the scroll view is
/// always scrollable and, therefore, can trigger the [RefreshIndicator].
///
/// A [RefreshIndicator] can only be used with a vertical scroll view.
///
/// See also:
///