updateAlignment method Null safety

Future<bool> updateAlignment(
  1. BMFTextAlignment alignment
)

更新文字对齐方式

iOS独有

Implementation

Future<bool> updateAlignment(BMFTextAlignment alignment) async {
  if (!Platform.isIOS) {
    return false;
  }
  bool ret = await BMFMapDispatcherFactory.instance.overlayDispatcher
      .updateTextMember(this.methodChannel,
          {'id': this.id, 'member': 'alignment', 'value': alignment.index});
  if (ret) {
    this.alignment = alignment;
  }
  return ret;
}