全屏加载后报警指示灯

既然你已经在用 redux-saga

考虑这样的行动 loadingOverlayVisible Modal 与 loading indicator

或者你可以在你的传奇中定制它,你可以把它作为

export function * submit() {
  try {
    yield put(loadingOverlayVisible(true)) // Modal Open
    const result = yield call(sampleApiCall)
    yield put(loadingOverlayVisible(false)) // Modal Close
    if(result && result.ok) {
       yield call(Alert.alert, 'Success', 'Success Response') // Alert Called
       //... Other stuff
    }
  } catch(ex) {
    yield call(Alert.alert, 'Success', 'Success Response') // Alert Called
  }
}

或者

制造 对于 例如

export function * interceptor({url, params}) {
  try {
    yield put(loadingOverlayVisible(true)) // Modal Open
    const result = yield call(sampleApiCall)
    yield put(loadingOverlayVisible(false)) // Modal Close
  } catch(ex) { 
    throw ex // Either handle it here or in your other generators
  }
}