HarmonyOS 鸿蒙Next showSoftKeyboard一定要点击输入框才能唤起输入法吗？

使用输入法框架提供的拉起键盘的能力，代码示例如下：

import inputMethod from '@ohos.inputmethod'
@Entry
@Component
struct TextInputExample2 {
  @State text: string = ''
  controller: TextInputController = new TextInputController()
  build() {
    Column() {
      TextInput({ placeholder: 'Please input your words.', controller: this.controller, text: " " })
        .onEditChange(isEditing => {
          console.log('foo' + isEditing)
          var InputMethodController = inputMethod.getInputMethodController();
          InputMethodController.showSoftKeyboard((err) => {
            if (err === undefined) {
              console.info('showSoftKeyboard success');
              this.controller.caretPosition(0)
            } else {
              console.error('showSoftKeyboard failed because : ' + JSON.stringify(err));
            }
          })
        })
     }
  }
}