Embedded Google Map can't get current location in WebView
You should permit the web view to access your location by overriding the method onGeolocationPermissionsShowPrompt
like this:
webView.setWebChromeClient(new WebChromeClient(){
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
});
On API 5.x and below, you will need
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
in your AndroidManifest.xml
.
But to allow permissions for geolocation on API 6.0+, you have to request the permission at runtime.
To do this, use
private String mGeolocationOrigin;
private GeolocationPermissions.Callback mGeolocationCallback;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// other setup
myWebView.setWebChromeClient(new MyWebChromeClient());
}
private WebChromeClient mWebChromeClient = new WebChromeClient() {
@Override
public void onGeolocationPermissionsShowPrompt(String origin,
GeolocationPermissions.Callback callback) {
// Geolocation permissions coming from this app's Manifest will only be valid for devices with API_VERSION < 23.
// On API 23 and above, we must check for permission, and possibly ask for it.
final String permission = Manifest.permission.ACCESS_FINE_LOCATION;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M ||
ContextCompat.checkSelfPermission(MainActivity.this, permission) == PackageManager.PERMISSION_GRANTED) {
// we're on SDK < 23 OR user has already granted permission
callback.invoke(origin, true, false);
} else {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, permission)) {
// user has denied this permission before and selected [/] DON'T ASK ME AGAIN
// TODO Best Practice: show an AlertDialog explaining why the user could allow this permission, then ask again
} else {
// ask the user for permissions
ActivityCompat.requestPermissions(MainActivity.this, new String[] {permission}, RP_ACCESS_LOCATION);
mGeolocationOrigin = origin;
mGeolocationCallback = callback;
}
}
}
}
and receive the result:
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case RP_ACCESS_LOCATION:
boolean allow = false;
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// user has allowed these permissions
allow = true;
}
if (mGeolocationCallback != null) {
mGeolocationCallback.invoke(mGeolocationOrigin, allow, false);
}
break;
}
}
in your activity.