1 files changed, 72 insertions, 0 deletions
diff --git a/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/Util.java b/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/Util.java
new file mode 100644
index 0000000000..4e4618cd28
--- /dev/null
+++ b/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/Util.java
@@ -0,0 +1,72 @@
+package com.mapbox.mapboxsdk.testapp;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import com.mapbox.mapboxsdk.geometry.LatLng;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Util {
+
+    public static String loadStringFromAssets(final Context context, final String fileName) throws IOException {
+        if (TextUtils.isEmpty(fileName)) {
+            throw new NullPointerException("No GeoJSON File Name passed in.");
+        }
+        InputStream is = context.getAssets().open(fileName);
+        BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
+        return readAll(rd);
+    }
+
+    public static List<LatLng> parseGeoJSONCoordinates(String geojsonStr) throws JSONException {
+        List<LatLng> latLngs = new ArrayList<>();
+        JSONObject jsonObject = new JSONObject(geojsonStr);
+        JSONArray features = jsonObject.getJSONArray("features");
+        int featureLength = features.length();
+        for (int j = 0; j < featureLength; ++j) {
+            JSONObject feature = features.getJSONObject(j);
+            JSONObject geometry = feature.getJSONObject("geometry");
+            String type = geometry.getString("type");
+            JSONArray coordinates;
+            if (type.equals("Polygon")) {
+                coordinates = geometry.getJSONArray("coordinates").getJSONArray(0);
+            } else {
+                coordinates = geometry.getJSONArray("coordinates");
+            }
+            int len = coordinates.length();
+            for (int i = 0; i < len; ++i) {
+                if (coordinates.get(i) instanceof JSONArray) {
+                    JSONArray coord = coordinates.getJSONArray(i);
+                    double lng = coord.getDouble(0);
+                    double lat = coord.getDouble(1);
+                    latLngs.add(new LatLng(lat, lng));
+                } else {
+                    double lng = coordinates.getDouble(0);
+                    double lat = coordinates.getDouble(1);
+                    latLngs.add(new LatLng(lat, lng));
+                }
+            }
+        }
+        return latLngs;
+    }
+
+    private static String readAll(Reader rd) throws IOException {
+        StringBuilder sb = new StringBuilder();
+        int cp;
+        while ((cp = rd.read()) != -1) {
+            sb.append((char) cp);
+        }
+        return sb.toString();
+    }
+}