<itemvalue="If this flag is specified, then a new file will be created if one does not already exist (if [truncate] is specified, the new file will be truncated to zero length if it previously exists)."/>
<itemvalue="Force all writes to append data at the end of the file."/>
<itemvalue="Forces an existing file with the same name to be truncated to zero length when creating a file by specifying [create]. [create] MUST also be specified if this flag is used."/>
<itemvalue="Open the file for writing. If both this and [read] are specified, the file is opened for both reading and writing."/>
<itemvalue="Load a new sound to be played once or multiple times later, from an asset."/>
<itemvalue="Load a new sound to be played once or multiple times later, from an asset."/>
<itemvalue="synthesize"/>
<itemvalue="synthesize"/>
<itemvalue="Returns time taken to execute this session in milliseconds or zero (0) if the session is not over yet."/>
<itemvalue="Returns time taken to execute this session in milliseconds or zero (0) if the session is not over yet."/>
@ -64,10 +68,6 @@
<itemvalue="A fraction in the range \[0, 1\] that represents what proportion of the widget is visible (assuming rectangular bounding boxes). 0 means not visible; 1 means fully visible."/>
<itemvalue="A fraction in the range \[0, 1\] that represents what proportion of the widget is visible (assuming rectangular bounding boxes). 0 means not visible; 1 means fully visible."/>
<itemvalue="`key` is required to properly identify this widget; it must be unique among all [VisibilityDetector] and [SliverVisibilityDetector] widgets."/>
<itemvalue="`key` is required to properly identify this widget; it must be unique among all [VisibilityDetector] and [SliverVisibilityDetector] widgets."/>
<itemvalue="AM plat"/>
<itemvalue="AM plat"/>
<itemvalue="image data must be aligned to a 4 byte alignment. Pad the remaining bytes until the image starts."/>
<itemvalue="时间刻度线"/>
<itemvalue="时间刻度"/>
<itemvalue="In debug mode, if [debugTracePostFrameCallbacks] is set to true, then the registered callback will show up in the timeline events chart, which can be viewed in [DevTools](https:docs.flutter.devtoolsdevtools). In that case, the `debugLabel` argument specifies the name of the callback as it will appear in the timeline. In profile and release builds, post-frame are never traced, and the `debugLabel` argument is ignored."/>