最初的app

app/src/main/java/com/example/mangowalking/overlay/AMapServicesUtil.java

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+package com.example.mangowalking.overlay;
+
+/**
+ * 地图服务工具类
+ */
+
+import android.graphics.Bitmap;
+
+import com.amap.api.maps.model.LatLng;
+import com.amap.api.services.core.LatLonPoint;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+class AMapServicesUtil {
+    public static int BUFFER_SIZE = 2048;
+
+    public static byte[] inputStreamToByte(InputStream in) throws IOException {
+
+        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
+        byte[] data = new byte[BUFFER_SIZE];
+        int count = -1;
+        while ((count = in.read(data, 0, BUFFER_SIZE)) != -1){
+            outStream.write(data, 0, count);
+        }
+
+        data = null;
+        return outStream.toByteArray();
+    }
+    public static LatLonPoint convertToLatLonPoint(LatLng latlon) {
+        return new LatLonPoint(latlon.latitude, latlon.longitude);
+    }
+    public static LatLng convertToLatLng(LatLonPoint latLonPoint) {
+        return new LatLng(latLonPoint.getLatitude(), latLonPoint.getLongitude());
+    }
+    public static ArrayList<LatLng> convertArrList(List<LatLonPoint> shapes) {
+        ArrayList<LatLng> lineShapes = new ArrayList<LatLng>();
+        for (LatLonPoint point : shapes) {
+            LatLng latLngTemp = AMapServicesUtil.convertToLatLng(point);
+            lineShapes.add(latLngTemp);
+        }
+        return lineShapes;
+    }
+    public static Bitmap zoomBitmap(Bitmap bitmap, float res) {
+        if (bitmap == null) {
+            return null;
+        }
+        int width, height;
+        width = (int) (bitmap.getWidth() * res);
+        height = (int) (bitmap.getHeight() * res);
+        Bitmap newbmp = Bitmap.createScaledBitmap(bitmap, width, height, true);
+        return newbmp;
+    }
+
+
+
+}