android - What is a map tile? -

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I read the Google Android API and was confused about a map tile as the API pointed out that how Google handles handle " Downloading tiles of maps ". (SRC) -. Can someone give a quick overview of what a map tile is just a part of that map which fits a device screen?

The part of the map that can contain several tiles in the device screen. Basically, the map is divided into several tiles based on the zoom level.

From:

The class bitmap graphics displayed in the grid system to show a map. From

:

The Google Maps API breaks the imagery in a set of square mapped tiles in a grid at each zoom level. When a map goes to a new location or to a new zoom level, the Maps API determines which tiles are required and that information is translated into a set of tiles to retrieve it.

The coordinates (0, 0) of the tile are always located in the northwest corner of the map, in which the x values ​​are rising from west to east and with rising values ​​from north to south. Tiles are indexed from that origin using the x, y coordinate.

At zoom level 0, the whole world is provided in a tile. Each zoom level increases magnification by two factors. Therefore, the map tile on the zoom level 1 will be provided as 2x2 grid. At Zoom Level 2, this is a 4x4 grid. At zoom level 3, this is 8x8 grid, and so on.

: Bing Maps Tile System


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