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package com.mapbox.mapboxsdk.testapp.activity.style;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.mapboxsdk.testapp.utils.ResourceUtils;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.lang.ref.WeakReference;
import timber.log.Timber;
/**
* Test activity showcasing how to use a file:// resource for the style.json and how to use MapboxMap#setStyleJson.
*/
public class StyleFileActivity extends AppCompatActivity {
private MapboxMap mapboxMap;
private MapView mapView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_style_file);
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(map -> {
mapboxMap = map;
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab_file);
fab.setColorFilter(ContextCompat.getColor(StyleFileActivity.this, R.color.primary));
fab.setOnClickListener(view -> new CreateStyleFileTask(view.getContext(), mapboxMap).execute());
FloatingActionButton fabStyleJson = (FloatingActionButton) findViewById(R.id.fab_style_json);
fabStyleJson.setColorFilter(ContextCompat.getColor(StyleFileActivity.this, R.color.primary));
fabStyleJson.setOnClickListener(view -> new LoadStyleFileTask(view.getContext(), mapboxMap).execute());
});
}
/**
* Task to read a style file from the raw folder
*/
private static class LoadStyleFileTask extends AsyncTask<Void, Void, String> {
private WeakReference<Context> context;
private WeakReference<MapboxMap> mapboxMap;
LoadStyleFileTask(Context context, MapboxMap mapboxMap) {
this.context = new WeakReference<>(context);
this.mapboxMap = new WeakReference<>(mapboxMap);
}
@Override
protected String doInBackground(Void... voids) {
String styleJson = "";
try {
styleJson = ResourceUtils.readRawResource(context.get(), R.raw.sat_style);
} catch (Exception exception) {
Timber.e(exception, "Can't load local file style");
}
return styleJson;
}
@Override
protected void onPostExecute(String json) {
super.onPostExecute(json);
Timber.d("Read json, %s", json);
MapboxMap mapboxMap = this.mapboxMap.get();
if (mapboxMap != null) {
mapboxMap.setStyleJson(json);
}
}
}
/**
* Task to write a style file to local disk and load it in the map view
*/
private static class CreateStyleFileTask extends AsyncTask<Void, Integer, Long> {
private File cacheStyleFile;
private WeakReference<Context> context;
private WeakReference<MapboxMap> mapboxMap;
CreateStyleFileTask(Context context, MapboxMap mapboxMap) {
this.context = new WeakReference<>(context);
this.mapboxMap = new WeakReference<>(mapboxMap);
}
@Override
protected Long doInBackground(Void... params) {
try {
cacheStyleFile = File.createTempFile("my-", ".style.json");
cacheStyleFile.createNewFile();
Timber.i("Writing style file to: %s", cacheStyleFile.getAbsolutePath());
Context context = this.context.get();
if (context != null) {
writeToFile(cacheStyleFile, ResourceUtils.readRawResource(context, R.raw.local_style));
}
} catch (Exception exception) {
Toast.makeText(context.get(), "Could not create style file in cache dir", Toast.LENGTH_SHORT).show();
}
return 1L;
}
protected void onPostExecute(Long result) {
// Actual file:// usage
MapboxMap mapboxMap = this.mapboxMap.get();
if (mapboxMap != null) {
mapboxMap.setStyleUrl("file://" + cacheStyleFile.getAbsolutePath());
}
}
private void writeToFile(File file, String contents) throws IOException {
BufferedWriter writer = null;
try {
writer = new BufferedWriter(new FileWriter(file));
writer.write(contents);
} finally {
if (writer != null) {
writer.close();
}
}
}
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@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();
}
}
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