java - 位置 API - 处理 NullPointerException

Question

运行我的应用程序一段时间后，当在下面的代码中调用 Location location = Intent.getParcelableExtra(FusedLocationProviderApi.KEY_LOCATION_CHANGED); 时，我得到一个 NullPointerException ，我我试图了解如何处理此异常，以防止它将来使我的代码崩溃。

public class LocationIntentService extends IntentService {

    public LocationIntentService() {
        super("LocationIntentService");
    }

    private String TAG = this.getClass().getSimpleName();

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        onHandleIntent(intent);
        // We want this service to continue running until it is explicitly
        // stopped, so return sticky.
        return START_STICKY;
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        Location location = intent.getParcelableExtra(FusedLocationProviderApi.KEY_LOCATION_CHANGED);
        if (location != null) {
            Log.i(TAG, "Location: " + location.getLatitude() + "," + location.getLongitude());
            Intent LocationIntent = new Intent("com.xyz.abc.LOCATION_DATA");
            LocationIntent.putExtra("lat", location.getLatitude());
            LocationIntent.putExtra("lon", location.getLongitude());
            getApplicationContext().sendBroadcast(intent);
            sendBroadcast(LocationIntent);
        } else {
            Log.e(TAG, "Location returned NULL catching exception");
        }

    }

}

任何想法都会很棒!

Answer 1

try {
    //code
} catch (NullPointerException e) {
    e.printStackTrace();
}