Hey there! Let's break down your two questions one by one:

1. 是否可以通过Android Google API获取实时交通图层数据？ #

Absolutely yes. The Google Maps SDK for Android supports loading real-time traffic layers directly in your app. Here's how you can do it:

• Once you've initialized your GoogleMap object, simply call googleMap.setTrafficEnabled(true). This will overlay the real-time traffic conditions (like red for congested, yellow for slow-moving, green for clear roads) onto your map view.
• Keep in mind that this method renders the traffic layer visually. If you need the underlying raw traffic data (like exact speed, congestion level values), this approach won't give you that—you'll need to use a different API endpoint, which leads us to your second question.

2. 获取指定点位（经纬度）的实时交通数据，是否存在Google Maps API服务可提供？ #

Yes, there are a couple of Google Maps Platform APIs that can help you get this data:

• Google Maps Roads API: First, use the Nearest Roads endpoint to snap your given latitude/longitude coordinates to the nearest road segments. Once you have the road identifiers, you can pair this with the Speed Limits endpoint (which can return real-time speed data if available for that road segment) to get traffic-related metrics.
• Google Maps Directions API: If you want context around the traffic at your point (like expected delays), you can request a short route that includes your target point, and add the departure_time=now parameter. The API will return real-time traffic adjustments, including delay times and adjusted travel speeds for the route segments covering your point.
• Traffic Flow API: This API provides real-time traffic flow data for road networks, including speed, congestion level, and travel time. You can query it using the road segments associated with your target coordinates (from the Roads API) to get granular traffic details for that specific area.

Important notes:

• All these APIs require a valid Google Maps Platform API key and are subject to usage limits and billing, so make sure to check the official documentation for pricing and quota details.
• Real-time traffic data availability can vary by region—some areas might have more detailed data than others.

内容的提问来源于stack exchange，提问作者RaaHul Dutta