初始化百度地图：
1 private void initViews() { 2 4 mMapView = (MapView) findViewById(R.id.bmapView); 5 mBaiduMap = mMapView.getMap(); 6 // 初始化地图范围级别 7 MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(14.0f); 8 mBaiduMap.setMapStatus(msu); 9 }
--------------------华丽分割线-----------------------
// 初始化bitmap 信息，不用时及时 recycle BitmapDescriptor friend_1;
初始化剪裁的图片（此处为生成圆形图片）：
1 friend_1 = BitmapDescriptorFactory.fromBitmap( 2 BMapUtil.createCircleImage(BitmapFactory.decodeResource(getResources(), R.drawable.friend_1), 90));
圆形图片生成方法：
1 /** 2 * 根据原图和变长绘制圆形图片 3 * @param source 4 * @param min 5 * @return 6 */ 7 public static Bitmap createCircleImage(Bitmap source, int radius) { 8 Bitmap scaledSrcBmp; 9 int diameter = radius * 2; 10 // 为了防止宽高不相等，造成圆形图片变形，因此截取长方形中处于中间位置最大的正方形图片 11 int bmpWidth = source.getWidth(); 12 int bmpHeight = source.getHeight(); 13 int squareWidth = 0, squareHeight = 0; 14 int x = 0, y = 0; 15 Bitmap squareBitmap; 16 if (bmpHeight > bmpWidth) {// 高大于宽 17 squareWidth = squareHeight = bmpWidth; 18 x = 0; 19 y = (bmpHeight - bmpWidth) / 2; 20 // 截取正方形图片 21 squareBitmap = Bitmap.createBitmap(source, x, y, squareWidth, 22 squareHeight); 23 } else if (bmpHeight < bmpWidth) {// 宽大于高 24 squareWidth = squareHeight = bmpHeight; 25 x = (bmpWidth - bmpHeight) / 2; 26 y = 0; 27 squareBitmap = Bitmap.createBitmap(source, x, y, squareWidth, 28 squareHeight); 29 } else { 30 squareBitmap = source; 31 } 32 if (squareBitmap.getWidth() != diameter 33 || squareBitmap.getHeight() != diameter) { 34 scaledSrcBmp = Bitmap.createScaledBitmap(squareBitmap, diameter, 35 diameter, true); 36 } else { 37 scaledSrcBmp = squareBitmap; 38 } 39 Bitmap output = Bitmap.createBitmap(scaledSrcBmp.getWidth(), 40 scaledSrcBmp.getHeight(), Config.ARGB_8888); 41 Canvas canvas = new Canvas(output); 42 43 Paint paint = new Paint(); 44 Rect rect = new Rect(0, 0, scaledSrcBmp.getWidth(), 45 scaledSrcBmp.getHeight()); 46 47 paint.setAntiAlias(true); 48 paint.setFilterBitmap(true); 49 paint.setDither(true); 50 canvas.drawARGB(0, 0, 0, 0); 51 canvas.drawCircle(scaledSrcBmp.getWidth() / 2, 52 scaledSrcBmp.getHeight() / 2, scaledSrcBmp.getWidth() / 2, 53 paint); 54 paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); 55 canvas.drawBitmap(scaledSrcBmp, rect, rect, paint); 56 bmp = null; 57 squareBitmap = null; 58 scaledSrcBmp = null; 59 return output; 60 }
初始化位置信息：
1 LatLng position_1 = new LatLng(39.963175, 116.400244);
初始化OverlayOptions：
1 OverlayOptions ooA = new MarkerOptions().position(position_1).icon(friend_1) 2 .zIndex(9).draggable(true);
再通过addOverlay添加到地图：
1 mMarkerA = (Marker) (mBaiduMap.addOverlay(ooA));
注册setOnMarkerClickListener：
mBaiduMap.setOnMarkerClickListener(new OnMarkerClickListener() { public boolean onMarkerClick(final Marker marker) { // todo 判断mMarkerA 的点击事件 } }
当退出时，释放资源：
@Override protected void onPause() { // MapView的生命周期与Activity同步，当activity挂起时需调用MapView.onPause() mMapView.onPause(); super.onPause(); } @Override protected void onResume() { // MapView的生命周期与Activity同步，当activity恢复时需调用MapView.onResume() mMapView.onResume(); super.onResume(); } @Override protected void onDestroy() { // MapView的生命周期与Activity同步，当activity销毁时需调用MapView.destroy() mMapView.onDestroy(); super.onDestroy(); // 回收 bitmap 资源 friend_1.recycle(); }