# Deprecate `TextInputConnection.setStyle`

> The `TextInputConnection.setStyle` method has been deprecated in favor of the `TextInputConnection.updateStyle` method.




:::important
These breaking change docs are accurate, as of the release
under which they are published. Over time, the
workarounds described here might become inaccurate.
We don't, in general, keep these breaking change docs up
to date as of each release.

这些破坏性改动文档的准确性仅限于其发布时对应的版本。
随着时间的推移，文档中描述的方案可能会逐渐失效。
通常情况下，我们不会在每次发布新版本时都对这些文档进行同步更新。

The [breaking change index file](/release/breaking-changes)
lists the docs created for each release.

[破坏性改动列表](/release/breaking-changes) 
列出了每个版本的文档。

:::


## Summary

`TextInputConnection.setStyle` is deprecated in favor of
`TextInputConnection.updateStyle`, which supports synchronizing
`letterSpacing`, `wordSpacing`, and `lineHeight` to the engine.

## Context

The previous `setStyle` method didn't support `letterSpacing`, `wordSpacing`,
or `lineHeight`. This caused visual misalignment of the selection highlight
and IME caret when these properties were used.

The replacement `updateStyle` method uses
`TextInputStyle` to support these properties,
ensuring the system input is synchronized with the rendered text.

## Migration guide

If you author a custom text input client,
replace calls to `TextInputConnection.setStyle`
with `TextInputConnection.updateStyle`.

### Code before migration

```dart
connection.setStyle(
  fontFamily: 'Roboto',
  fontSize: 14.0,
  fontWeight: FontWeight.normal,
  textDirection: TextDirection.ltr,
  textAlign: TextAlign.start,
);
```

### Code after migration

```dart
connection.updateStyle(
  TextInputStyle(
    fontFamily: 'Roboto',
    fontSize: 14.0,
    fontWeight: FontWeight.normal,
    textDirection: TextDirection.ltr,
    textAlign: TextAlign.start,
    letterSpacing: 1.2,
    wordSpacing: 1.0,
    lineHeight: 1.5,
  ),
);
```

## Timeline

Landed in version: 3.43.0-0.1.pre<br>
In stable release: 3.44

## References

Relevant PR:

* [Fix IME and selection by syncing more text styles][pr-180436]

Relevant issues:

* [Incorrect position of Japanese predictive conversion popup in TextFormField using maxLines on the Web][issue-161592]

[pr-180436]: https://github.com/flutter/flutter/pull/180436
[issue-161592]: https://github.com/flutter/flutter/issues/161592