高德地图安卓 SDK 离线加载自定义样式

public class AMapCustomStyleLoader {

    private byte[] buffStyle = null;
    private byte[] buffStyleExtra = null;

    @SuppressWarnings("ResultOfMethodCallIgnored")
    public AMapCustomStyleLoader(String stylePath, String styleExtraPath, AssetManager assetManager) {
        InputStream inputStreamStyle = null;
        InputStream inputStreamStyleExtra = null;
        try {
            inputStreamStyle = assetManager.open(stylePath);
            int lenStyle = inputStreamStyle.available();
            buffStyle = new byte[lenStyle];
            inputStreamStyle.read(buffStyle);
            inputStreamStyleExtra = assetManager.open(styleExtraPath);
            int lenStyleExtra = inputStreamStyle.available();
            buffStyleExtra = new byte[lenStyleExtra];
            inputStreamStyleExtra.read(buffStyleExtra);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (inputStreamStyle != null) inputStreamStyle.close();
                if (inputStreamStyleExtra != null) inputStreamStyleExtra.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public byte[] getStyle() {
        return buffStyle;
    }

    public byte[] getStyleExtra() {
        return buffStyleExtra;
    }
}