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package com.mapbox.mapboxsdk.testapp.activity.snapshot;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.ViewTreeObserver;
import android.widget.GridLayout;
import android.widget.ImageView;
import com.mapbox.mapboxsdk.camera.CameraPosition;
import com.mapbox.mapboxsdk.constants.Style;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.geometry.LatLngBounds;
import com.mapbox.mapboxsdk.snapshotter.MapSnapshotter;
import com.mapbox.mapboxsdk.testapp.R;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import timber.log.Timber;
/**
* Test activity showing how to use a the {@link com.mapbox.mapboxsdk.snapshotter.MapSnapshotter}
*/
public class MapSnapshotterActivity extends AppCompatActivity {
private GridLayout grid;
private List<MapSnapshotter> snapshotters = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map_snapshotter);
// Find the grid view and start snapshotting as soon
// as the view is measured
grid = (GridLayout) findViewById(R.id.snapshot_grid);
grid.getViewTreeObserver()
.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
//noinspection deprecation
grid.getViewTreeObserver().removeGlobalOnLayoutListener(this);
addSnapshots();
}
});
}
private void addSnapshots() {
Timber.i("Creating snapshotters");
for (int row = 0; row < grid.getRowCount(); row++) {
for (int column = 0; column < grid.getColumnCount(); column++) {
startSnapShot(row, column);
}
}
}
private void startSnapShot(final int row, final int column) {
// Define the dimensions
MapSnapshotter.Options options = new MapSnapshotter.Options(
grid.getMeasuredWidth() / grid.getColumnCount(),
grid.getMeasuredHeight() / grid.getRowCount()
)
// Optionally the pixel ratio
.withPixelRatio(1)
// Optionally the style
.withStyle((column + row) % 2 == 0 ? Style.MAPBOX_STREETS : Style.DARK)
.withLocalIdeographFontFamily("sans-serif");
// Optionally the visible region
if (row % 2 == 0) {
options.withRegion(new LatLngBounds.Builder()
.include(new LatLng(randomInRange(-80, 80), randomInRange(-160, 160)))
.include(new LatLng(randomInRange(-80, 80), randomInRange(-160, 160)))
.build()
);
}
// Optionally the camera options
if (column % 2 == 0) {
options.withCameraPosition(new CameraPosition.Builder()
.target(options.getRegion() != null
? options.getRegion().getCenter()
: new LatLng(randomInRange(-80, 80), randomInRange(-160, 160)))
.bearing(randomInRange(0, 360))
.tilt(randomInRange(0, 60))
.zoom(randomInRange(0, 20))
.build()
);
}
MapSnapshotter snapshotter = new MapSnapshotter(MapSnapshotterActivity.this, options);
snapshotter.start(snapshot -> {
Timber.i("Got the snapshot");
ImageView imageView = new ImageView(MapSnapshotterActivity.this);
imageView.setImageBitmap(snapshot.getBitmap());
grid.addView(
imageView,
new GridLayout.LayoutParams(GridLayout.spec(row), GridLayout.spec(column))
);
});
snapshotters.add(snapshotter);
}
@Override
public void onPause() {
super.onPause();
// Make sure to stop the snapshotters on pause
for (MapSnapshotter snapshotter : snapshotters) {
snapshotter.cancel();
}
snapshotters.clear();
}
private static Random random = new Random();
public static float randomInRange(float min, float max) {
return (random.nextFloat() * (max - min)) + min;
}
}
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