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我已经使用谷歌 API 实现了一个使用 GPS 的应用程序。据我阅读文档,Location.getAltitude 返回一个双精度值,但我得到的所有值都是整数。

我想要至少有 1 个小数位的值。

我是在做错什么,还是应该表现得像那样?

这是我的代码的相关部分:

protected void createLocationRequest() {
    mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(UPDATE_INTERVAL);
    mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setSmallestDisplacement(DISPLACEMENT);
}

@Override
public void onLocationChanged(Location locationRead) {

//a lot of stuff, check signal, filter wrong reading, etc...

currentLocation = locationRead;

//compare last location with current location, some calculation, etc...

//already used String.format("%.1f",currentLocation.getLongitude()).replace(",", "."),
DecimalFormat df = new DecimalFormat("#.0");

//Send information to another class
GPS.this.interfaceGPS_Activity.locationChanged(
                (currentLocation.distanceTo(lastLocation) / 1000),
                (timeSplit),
                formatter.format(dateTimeOfGPS),
                String.format("%.7f", currentLocation.getLatitude()).replace(",", "."),
                String.format("%.7f", currentLocation.getLongitude()).replace(",", "."),
                df.format(currentLocation.getAltitude()).replace(",","."),
                currentPaceForLabel
        );

发送的高度始终为 xyz.0,例如 920.0 921.0 1011.0,永远不会是 920.6 或 921.2 始终为 .0

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1 回答 1

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你没有做错任何事,只是没有那么准确。GPS 甚至不能提供 1m 的精度,更不用说十分之一米了。

于 2015-12-04T22:22:09.070 回答