如何减少基于位置的 Android 应用程序的功耗？

如何减少应用程序的功耗？我可以使用什么代码来实现这个？

有几种不同的方法可以减少尝试获取位置信息时所用的电量。

1. Use the 最后已知位置 http://developer.android.com/reference/android/location/LocationManager.html#getLastKnownLocation%28java.lang.String%29而不是尝试确定当前位置。

   // Get a Location Manager
   LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
   
   // Try to get the last GPS based location
   Location l = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
   
   // Fall back to cell tower based location if no prior GPS location
   if (l == null) {
       l = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
   }
   

2. 使用较便宜的位置提供商。你可以选择LocationManager.NETWORK_PROVIDER http://developer.android.com/reference/android/location/LocationManager.html#NETWORK_PROVIDER直接或指定criteria http://developer.android.com/reference/android/location/Criteria.html您关心的位置并让 Android 告诉您要使用哪个位置提供商。

   // Select the criteria you care about
   Criteria c = new Criteria();
   c.setAccuracy(Criteria.ACCURACY_COARSE);
   c.setPowerRequirement(Criteria.POWER_LOW);
   
   // Let the system tell you what provider you should use for your criteria
   LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
   String p = lm.getBestProvider(c, true);
   
   // Call other Location Manager functions using the above provider...