Android毛玻璃背景效果简单实现代码
程序员文章站
2023-11-27 15:09:34
思路:
1.使用findviewbyid获得需要设置毛玻璃的控件。
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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:
/** * 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