无忧无虑数学网,81813,爱情片
思路：
1.使用findviewbyid获得需要设置毛玻璃的控件。
2.调用 setblurbackground(bitmap bmp)方法（下面会给出），参数为bitmap类型，给控件设置毛玻璃背景！
3.已完成，
方法：
我要评论
/**
* 设置毛玻璃背景
* 背景图片 bitmap
*/
private void setblurbackground(bitmap bmp)
{
final bitmap blurbmp = blurutil.fastblur(parentcircleinfoactivity.this, bmp, 10);//0-25，表示模糊值
final drawable drawable = imageutil.getdrawable(this,blurbmp);//将bitmap类型图片 转为 drawable类型
mrlhead.post(new runnable() //调用ui线程
{
@override
public void run()
{
mrlhead.setbackgrounddrawable(drawable);
}
});
}
bitmap 转 drawable:
/**
* bitmap -> drawable
* @param context
* @param bm
* @return
*/
public static drawable getdrawable(context context, bitmap bm){
bitmapdrawable bd= new bitmapdrawable(context.getresources(),bm);
return bd;
}
使用到的工具类：
public class blurutil
{
@suppresslint("newapi")
public static bitmap fastblur(context context, bitmap sentbitmap, int radius)
{
if (version.sdk_int > 16)
{
bitmap bitmap = sentbitmap.copy(sentbitmap.getconfig(), true);
final renderscript rs = renderscript.create(context);
final allocation input = allocation.createfrombitmap(rs,sentbitmap, allocation.mipmapcontrol.mipmap_none,allocation.usage_script);
final allocation output = allocation.createtyped(rs,input.gettype());
final scriptintrinsicblur script = scriptintrinsicblur.create(rs, element.u8_4(rs));
script.setradius(radius);/* e.g. 3.f */
script.setinput(input);
script.foreach(output);
output.copyto(bitmap);
return bitmap;
}
bitmap bitmap = sentbitmap.copy(sentbitmap.getconfig(), true);
if (radius < 1)
{
return (null);
}
int w = bitmap.getwidth();
int h = bitmap.getheight();
int[] pix = new int[w * h];
log.e("pix", w + " " + h + " " + pix.length);
bitmap.getpixels(pix, 0, w, 0, 0, w, h);
int wm = w - 1;
int hm = h - 1;
int wh = w * h;
int div = radius + radius + 1;
int r[] = new int[wh];
int g[] = new int[wh];
int b[] = new int[wh];
int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
int vmin[] = new int[math.max(w, h)];
int divsum = (div + 1) >> 1;
divsum *= divsum;
int dv[] = new int[256 * divsum];
for (i = 0; i < 256 * divsum; i++)
{
dv[i] = (i / divsum);
}
yw = yi = 0;
int[][] stack = new int[div][3];
int stackpointer;
int stackstart;
int[] sir;
int rbs;
int r1 = radius + 1;
int routsum, goutsum, boutsum;
int rinsum, ginsum, binsum;
for (y = 0; y < h; y++)
{
rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
for (i = -radius; i <= radius; i++)
{
p = pix[yi + math.min(wm, math.max(i, 0))];
sir = stack[i + radius];
sir[0] = (p & 0xff0000) >> 16;
sir[1] = (p & 0x00ff00) >> 8;
sir[2] = (p & 0x0000ff);
rbs = r1 - math.abs(i);
rsum += sir[0] * rbs;
gsum += sir[1] * rbs;
bsum += sir[2] * rbs;
if (i > 0)
{
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
}
else
{
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
}
}
stackpointer = radius;
for (x = 0; x < w; x++)
{
r[yi] = dv[rsum];
g[yi] = dv[gsum];
b[yi] = dv[bsum];
rsum -= routsum;
gsum -= goutsum;
bsum -= boutsum;
stackstart = stackpointer - radius + div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (y == 0)
{
vmin[x] = math.min(x + radius + 1, wm);
}
p = pix[yw + vmin[x]];
sir[0] = (p & 0xff0000) >> 16;
sir[1] = (p & 0x00ff00) >> 8;
sir[2] = (p & 0x0000ff);
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
rsum += rinsum;
gsum += ginsum;
bsum += binsum;
stackpointer = (stackpointer + 1) % div;
sir = stack[(stackpointer) % div];
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
rinsum -= sir[0];
ginsum -= sir[1];
binsum -= sir[2];
yi++;
}
yw += w;
}
for (x = 0; x < w; x++)
{
rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
yp = -radius * w;
for (i = -radius; i <= radius; i++)
{
yi = math.max(0, yp) + x;
sir = stack[i + radius];
sir[0] = r[yi];
sir[1] = g[yi];
sir[2] = b[yi];
rbs = r1 - math.abs(i);
rsum += r[yi] * rbs;
gsum += g[yi] * rbs;
bsum += b[yi] * rbs;
if (i > 0)
{
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
}
else
{
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
}
if (i < hm)
{
yp += w;
}
}
yi = x;
stackpointer = radius;
for (y = 0; y < h; y++)
{
pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];
rsum -= routsum;
gsum -= goutsum;
bsum -= boutsum;
stackstart = stackpointer - radius + div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (x == 0)
{
vmin[y] = math.min(y + r1, hm) * w;
}
p = x + vmin[y];
sir[0] = r[p];
sir[1] = g[p];
sir[2] = b[p];
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
rsum += rinsum;
gsum += ginsum;
bsum += binsum;
stackpointer = (stackpointer + 1) % div;
sir = stack[stackpointer];
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
rinsum -= sir[0];
ginsum -= sir[1];
binsum -= sir[2];
yi += w;
}
}
bitmap.setpixels(pix, 0, w, 0, 0, w, h);
return (bitmap);
}
}
总结
以上所述是小编给大家介绍的android毛玻璃背景效果简单实现代码，希望对大家有所帮助
如对本文有疑问，请在下面进行留言讨论，广大热心网友会与你互动！！ 点击进行留言回复
Android studio 解决logcat无过滤工具栏的操作
Android Studio 恢复小窗口停靠模式(Docked Mode)
Android studio保存logcat日志到本地的操作
Android Studio快捷键生成TAG、Log.x日志输出介绍
网友评论