platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/imagegenerator/SnapshotActivity.java


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

import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;

import com.mapbox.mapboxsdk.constants.Style;
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 SnapshotActivity extends AppCompatActivity implements OnMapReadyCallback, View.OnClickListener {

    private MapView mapView;
    private MapboxMap mapboxMap;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_snapshot);

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

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

        mapView = (MapView) findViewById(R.id.mapView);
        mapView.onCreate(savedInstanceState);
        mapView.getMapAsync(this);
    }

    @Override
    public void onMapReady(MapboxMap map) {
        mapboxMap = map;
        mapboxMap.setStyleUrl(Style.OUTDOORS);
        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        if (fab != null) {
            fab.setColorFilter(ContextCompat.getColor(SnapshotActivity.this, R.color.primary));
            fab.setOnClickListener(this);
        }
    }

    @Override
    public void onClick(View v) {
        final long startTime = System.nanoTime();
        mapboxMap.snapshot(new MapboxMap.SnapshotReadyCallback() {
            @Override
            public void onSnapshotReady(Bitmap snapshot) {
                long endTime = System.nanoTime();
                long duration = (long) ((endTime - startTime) / 1e6);
                ImageView snapshotView = (ImageView) findViewById(R.id.imageView);
                snapshotView.setImageBitmap(snapshot);
                Toast.makeText(SnapshotActivity.this, String.format("Snapshot taken in %d ms", duration), Toast.LENGTH_LONG).show();
            }
        });
    }

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

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

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mapView.onSaveInstanceState(outState);
    }

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

    @Override
    public void onDestroy() {
        super.onDestroy();
        mapView.onDestroy();
    }

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