我正在使用FusedLocation提供商，即使我的手机中的Internet Services已关闭，我也不希望我的应用程序崩溃。我尝试使用尝试/捕获，没有用

Question

注意：互联网服务故意在我的手机中关闭。

在下行中出现错误：

addresses = geocoder.getFromLocation(latitude, longitude, 1)

即使Internet服务已关闭，我也不希望我的应用程序崩溃，并希望将问题捕获到Catch Block中。 我已经实现了try/catch块，但是我的应用程序仍然通过给出以下例外而

：

崩溃 提前致谢。

Answer 1

您应该在单独的线程

private fun getAddress(latitude: Double, longitude: Double) {
    viewModelScope.launch {
        try {
            var addresses: List<Address>
            val deferred = this.async(Dispatchers.IO) {
                addresses = geocoder!!.getFromLocation(
                    latitude,
                    longitude,
                    1
                ) // Here 1 represent max location result to returned, by documents it recommended 1 to 5

                return@async addresses
            }
            withContext(Dispatchers.Main) {
                val data = deferred.await()
                showAddress(data)
            }

        } catch (e: Exception) {
            Log.e("location", e.message!!)
        }
    }
}

检索地址上调用地理编码器：

 private fun showAddress(addresses: List<Address>) {
    val address = addresses[0]
        .getAddressLine(0) // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()

    val city = addresses[0].locality
    val state = addresses[0].adminArea
    val country = addresses[0].countryName
    val postalCode = addresses[0].postalCode
    val knownName = addresses[0].featureName // Only if available else return NULL

}