檢查是否啓用了GPS和/或移動網絡位置

Question

我試圖檢查移動網絡位置是否位於GPS和/或WiFi &。我目前的代碼只適用於GPS，我試圖嘗試包括網絡提供商，但我收到以下錯誤。

第一個錯誤

The method isProviderEnabled(String) in the type LocationManager is not applicable for the arguments (String, String)

---

目前代碼

if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER, LocationManager.NETWORK_PROVIDER)){ 
      Toast.makeText(this, "GPS is Enabled in your device", Toast.LENGTH_SHORT).show(); 
     }else{ 
      displayAlert(); 
     } 

---

Answer 1

你必須檢查每個單獨提供：

if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || 
    locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)){ 
     Toast.makeText(this, "GPS/Network is Enabled in your device", 
      Toast.LENGTH_SHORT).show(); 
    }else{ 
     displayAlert(); 
    } 

Answer 2

如果您看到isProvideEnabled(String)的文檔，則只允許一個字符串作爲參數。所以，你可以做seperately的檢查：

boolean gpsPresent = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); 
boolean networkProviderPresent = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 

然後你可以檢查它們的@ianhanniballake說，或者類似的東西：

if ((!gpsPresent) && (!networkProviderPresent)){ 
    displayAlert(); // Nothing is available to give the location 
}else { 
    if (gpsPresent){ 
     Toast.makeText(this, "GPS is Enabled in your device", Toast.LENGTH_SHORT).show();  
    } 
    if (networkProviderPresent){ 
     Toast.makeText(this, "Network Provider is Present on your device", Toast.LENGTH_SHORT).show(); 
    } 
} 

希望這有助於。