1 files changed, 177 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/maps/activity/style/StyleFileActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/maps/activity/style/StyleFileActivity.java
new file mode 100644
index 0000000000..4067f4ebd5
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/maps/activity/style/StyleFileActivity.java
@@ -0,0 +1,177 @@
+package com.mapbox.mapboxsdk.maps.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.maps.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();
+  }
+}