Android image tile

The android framework allows you to create a drawable that contains a bitmap for tiled, scaled, and aligned processing. When we want the background to be tiled using the following image:

1) the first method is to use the API provided by the system.

Bitmap bitmap = bitmapfactory. decoderesource (getresources (), R. drawable. PIC );

// Bitmap = bitmap. createbitmap (100, 20, config. argb_8888 );
Bitmapdrawable drawable = new bitmapdrawable (Bitmap );
Drawable. settilemodexy (tilemode. Repeat, tilemode. Repeat );
Drawable. setdither (true );
View. setbackgrounddrawable (drawable );

The tilemode attribute defines the display mode of the background:

Disabled

Default Value, indicating no tile is used

Clamp

Copy edge color

Repeat

Repeat the image display on the X and Y axes, that is, the tile we are talking about.

Mirror

Use an alternate image in the horizontal and vertical directions to repeat the image painting.

2) The second method is to use XML for easy implementation.

<Bitmap xmlns: Android = "http://schemas.android.com/apk/res/android" Android: src = "@ drawable/IMG"
Android: tilemode = "repeat"/>

3) The third method is to draw it by yourself.

Public static bitmap createrepeater (INT width, bitmap SRC ){
Int COUNT = (width + SRC. getwidth ()-1)/src. getwidth ();

Bitmap bitmap = bitmap. createbitmap (width, SRC. getheight (), config. argb_8888 );
Canvas canvas = new canvas (Bitmap );

For (INT idx = 0; idx <count; ++ idx ){

Canvas. drawbitmap (SRC, idx * SRC. getwidth (), 0, null );
}

Return bitmap;
}

The final tile effect is as follows:

Note: The first two may have bugs, and the third one is more practical. From: http://blog.csdn.net/t12x3456/article/details/7738475