android 背景图片

引用：

<?xml version="1.0" encoding="utf-8"?>

<bitmap xmlns:android="http://schemas.android.com/apk/res/android" android:src="@drawable/bg" android:tileMode="repeat" />这么写

写完引用，比如@layout/aaa.xml

*.9.png

opengl es 纹理

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 1)第一种利用系统提供的api实现

Java代码：

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);

       2)第二种我们使用xml来轻松实现

android:tileMode="repeat" />

      3)第三种自己画出来

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;