打开APP Button的实现

// LaunchApp.ets
import { FunctionalButton, functionalButtonComponentManager } from '@kit.ScenarioFusionKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

@Entry
@Component
struct Index {
  build() {
    Row() {
      Column() {
        // 声明FunctionalButton
        FunctionalButton({
          params: {
            // OpenType.LAUNCH_APP表示Button为打开应用类型
            openType: functionalButtonComponentManager.OpenType.LAUNCH_APP,
            label: '打开应用',
            // OpenType为“functionalButtonComponentManager.OpenType.LAUNCH_APP”时，appParam参数必填
            appParam: {
              bundleName: "xxx",
              abilityName: "xxx"
            },
            // 调整Button样式
            styleOption: {
              styleConfig: new functionalButtonComponentManager.ButtonConfig()
                .fontSize(20)
                .fontColor(Color.Black)
            }
          },
          // OpenType为“LAUNCH_APP”时，回调必须选择“onLaunchApp”
          controller: new functionalButtonComponentManager.FunctionalButtonController().onLaunchApp((err) => {
            if (err) {
              // 错误日志处理
              hilog.error(0x0000, "testTag", "error： %{public}d %{public}s", err.code, err.message);
              return;
            }
            // 成功日志处理，成功时无返回值
            hilog.info(0x0000, "testTag", "succeeded in launching app");
          })
        })
      }
      .width('100%')
    }
    .height('100%')
  }
}