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package com.mapbox.mapboxsdk.testapp.activity.annotation;

import android.animation.TypeEvaluator;
import android.animation.ValueAnimator;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.animation.AccelerateDecelerateInterpolator;

import com.mapbox.mapboxsdk.annotations.Marker;
import com.mapbox.mapboxsdk.annotations.MarkerOptions;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.testapp.R;

public class AnimatedMarkerActivity extends AppCompatActivity {

    private MapView mMapView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_animated_marker);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setDisplayHomeAsUpEnabled(true);
            actionBar.setDisplayShowHomeEnabled(true);
        }

        mMapView = (MapView) findViewById(R.id.mapView);
        mMapView.onCreate(savedInstanceState);
        mMapView.getMapAsync(new OnMapReadyCallback() {
            @Override
            public void onMapReady(@NonNull final MapboxMap mapboxMap) {
                LatLng brussels = new LatLng(50.900446, 4.485251);
                LatLng washington = new LatLng(38.897108, -77.036716);

                final Marker marker = mapboxMap.addMarker(new MarkerOptions().position(brussels));
                ValueAnimator markerAnimator = ValueAnimator.ofObject(new LatLngEvaluator(), (Object[]) new LatLng[]{brussels, washington});
                markerAnimator.setDuration(5000);
                markerAnimator.setRepeatCount(ValueAnimator.INFINITE);
                markerAnimator.setRepeatMode(ValueAnimator.REVERSE);
                markerAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
                markerAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
                    @Override
                    public void onAnimationUpdate(ValueAnimator animation) {
                        if (marker != null) {
                            marker.setPosition((LatLng) animation.getAnimatedValue());
                        }
                    }
                });
                markerAnimator.start();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_zoom, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                onBackPressed();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        mMapView.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
        mMapView.onPause();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mMapView.onSaveInstanceState(outState);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mMapView.onDestroy();
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        mMapView.onLowMemory();
    }

    private class LatLngEvaluator implements TypeEvaluator<LatLng> {

        private LatLng mLatLng = new LatLng();

        @Override
        public LatLng evaluate(float fraction, LatLng startValue, LatLng endValue) {
            mLatLng.setLatitude(startValue.getLatitude() + (endValue.getLatitude() - startValue.getLatitude()) * fraction);
            mLatLng.setLongitude(startValue.getLongitude() + (endValue.getLongitude() - startValue.getLongitude()) * fraction);
            return mLatLng;
        }
    }
}