Question

我正在使用谷歌地图做一个应用程序，但是当我尝试添加“我的位置”按钮时，正如参考文献所说的不起作用...

这就是我的方式：

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

        locManager = (LocationManager)getSystemService(LOCATION_SERVICE);
        providersList = locManager.getAllProviders();
        provider =locManager.getProvider(providersList.get(0));
        precision = provider.getAccuracy();
        req = new Criteria();
        req.setAccuracy(Criteria.ACCURACY_FINE);        
        inside = false;

        map.getUiSettings().setMyLocationButtonEnabled(true);

        buildPolygon();
        drawPolygon();
        startLocalization();
    }

我在谷歌的参考资料中使用了map.getUiSettings().setMyLocationButtonEnabled(true);。我不知道发生了什么......

Answer 1

默认情况下myLocationButtonEnabled为true，并在启用setMyLocationEnabled图层时显示。

试试这个：

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

    // Add this line
    map.setMyLocationEnabled(true);

    locManager = (LocationManager)getSystemService(LOCATION_SERVICE);
    providersList = locManager.getAllProviders();
    provider =locManager.getProvider(providersList.get(0));
    precision = provider.getAccuracy();
    req = new Criteria();
    req.setAccuracy(Criteria.ACCURACY_FINE);        
    inside = false;

    //map.getUiSettings().setMyLocationButtonEnabled(true);

    buildPolygon();
    drawPolygon();
    startLocalization();
}

setMyLocationEnabled Documentation
setMyLocationButtonEnabled Documentation

Answer 2

创建地图后只需添加map.setMyLocationEnabled(true);

map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

就像这样

map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

map.setMyLocationEnabled(true);

Answer 3

添加以下行。

科特琳：

map.isMyLocationEnabled = true

map是GoogleMap对象。

（此问题的更详细答案：https://stackoverflow.com/a/15142091/11211963）

Answer 4

对于我来说， map.setMyLocationEnabled（true）; ；
对于低于棉花糖的设备和高于棉花糖的设备，它工作正常，我在应用内手动设置了位置权限。后来我的位置按钮可见了。

Answer 5

以上答案无效。

override fun onMapReady(googleMap: GoogleMap?) {
    this.googleMap = googleMap

    setupMap()
}

private fun setupMap() {
    if (ActivityCompat.checkSelfPermission(context!!,
            Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
        // Before enabling the My Location layer, you must request location permission from the user.
        googleMap?.isMyLocationEnabled = true
        // *** Use this method ***
        googleMap?.uiSettings?.isMyLocationButtonEnabled = true

        // See https://developers.google.com/maps/documentation/android-sdk/location
        googleMap?.setOnMyLocationButtonClickListener(this)
        googleMap?.setOnMyLocationClickListener(this)
    } else {
        // Show rationale and request permission.
        requestPermissions(arrayOf(Manifest.permission.ACCESS_FINE_LOCATION),
            LOCATION_REQUEST_CODE)
    }
}

Answer 6

您需要权限使其可见

if (ActivityCompat.checkSelfPermission(Maps_Activity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(Maps_Activity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

   requestPermission();

   return;
}

mMap.setMyLocationEnabled(true);

Google Maps v2 Android上的我的位置按钮未显示

6 个答案: