使用Android提供的模拟任意地理位置，报java.lang.IllegalArgumentException: Incomplete location object异常的解决方法

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使用Android提供的模拟任意地理位置的接口，执行如下方法时，会报异常：

    Location localLocation = getLoc(LocationManager.GPS_PROVIDER);    mLocationManager.setTestProviderLocation(LocationManager.GPS_PROVIDER,            localLocation);

12-10 14:54:24.497: W/System.err(27548): java.lang.IllegalArgumentException: Incomplete location object, missing timestamp or accuracy? Location[gps 22.546054,114.025974 acc=0 et=?!? alt=0.0 vel=0.0 bear=0.0]12-10 14:54:24.497: W/System.err(27548):  at android.location.LocationManager.setTestProviderLocation(LocationManager.java:1218)12-10 14:54:24.497: W/System.err(27548):  at com.zhao3546.MockLocationServicePro$1.run(MockLocationServicePro.java:55)12-10 14:54:24.497: W/System.err(27548):  at android.os.Handler.handleCallback(Handler.java:725)12-10 14:54:24.497: W/System.err(27548):  at android.os.Handler.dispatchMessage(Handler.java:92)12-10 14:54:24.497: W/System.err(27548):  at android.os.Looper.loop(Looper.java:137)12-10 14:54:24.497: W/System.err(27548):  at android.app.ActivityThread.main(ActivityThread.java:5106)12-10 14:54:24.497: W/System.err(27548):  at java.lang.reflect.Method.invokeNative(Native Method)12-10 14:54:24.497: W/System.err(27548):  at java.lang.reflect.Method.invoke(Method.java:511)12-10 14:54:24.497: W/System.err(27548):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)12-10 14:54:24.500: W/System.err(27548):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)12-10 14:54:24.500: W/System.err(27548):  at dalvik.system.NativeStart.main(Native Method)

这个问题可以通过两个方法解决。

方法一：

主要是这句，location.setElapsedRealtimeNanos(SystemClock.elapsedRealtimeNanos());

    @SuppressLint("NewApi")    private Location getLoc(String provider)    {        Location location = new Location(provider);        location.setLatitude(lat);        location.setLongitude(lng);        location.setAltitude(altitude);        location.setBearing(bearing);        location.setSpeed(speed);        location.setAccuracy(accuracy);        location.setTime(System.currentTimeMillis());        location.setElapsedRealtimeNanos(SystemClock.elapsedRealtimeNanos());        return location;    }

方法二，加上下面的反射调用：

    try    {        Method method = Location.class.getMethod("makeComplete");        if (method != null)        {            method.invoke(localLocation);        }    }    catch (NoSuchMethodException e)    {        e.printStackTrace();    }    catch (Exception e)    {        e.printStackTrace();    }

第二个方法调用的 makeComplete() 方法在Android源码中的实现如下，其实和第一个方法异曲同工，还是第一个方法更优。

    /**     * Helper to fill incomplete fields.     *     * <p>Used to assist in backwards compatibility with     * Location objects received from applications.     *     * @see #isComplete     * @hide     */    public void makeComplete() {        if (mProvider == null) mProvider = "?";        if (!mHasAccuracy) {            mHasAccuracy = true;            mAccuracy = 100.0f;        }        if (mTime == 0) mTime = System.currentTimeMillis();        if (mElapsedRealtimeNanos == 0) mElapsedRealtimeNanos = SystemClock.elapsedRealtimeNanos();    }

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