Question

我已经完成了这个代码，我想获得经度和纬度，但是使用网络提供者和gps提供者我得到的位置为null。即使gps已启用......为什么会这样？

      boolean isGPSEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
      boolean  isNetworkEnabled = lm
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        Location location = null;
        if (!isGPSEnabled && !isNetworkEnabled)
        {  
        }
        else if(isGPSEnabled ) {
            location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            if(location == null)
            {                   
                if(isNetworkEnabled)
                    location =                                   lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);                 
                if(location == null)
                {
                }
            }
        } else if(isNetworkEnabled){
            location = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);   
            if(location == null)
            {
            }
        }

Answer 1

由于您的gps已启用（remember gps takes alot of time to get coordinates）并且您在代码中首先检查gps，因此有几个原因导致您没有获得坐标，而是因为您的network if (!isGPSEnabled && !isNetworkEnabled) { } else if(isNetworkEnabled){ location = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); if(location == null) { } } else if(isGPSEnabled ) { location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); if(location == null) { if(isNetworkEnabled) location = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); if(location == null) { } } }部分是因为您正在使用if else.so将您的代码更改为这样并首先检查网络。

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Android网络提供程序和gps提供程序返回null

1 个答案: