本人图片加载用了Glide,模糊用了一个git上面的效果,叫Fglass,总体来说还可以,效果图如下:
下面开始我的代码了:(获取到图片路径,用Glide)
Glide.with(mcontext).load(url).asBitmap().error(R.drawable.pic_nologinbg).into(new SimpleTarget() {
@Override
public void onResourceReady(Bitmap resource, GlideAnimation super Bitmap> glideAnimation) {
iv_head.setImageBitmap(resource);
Fglass.blur(resource,rt_headbg,4,12);
}
});
下面是Fglass的工具类
public class Fglass {
//第一次设置的是吧不显示,所以放弃了
/**
* 设置高斯模糊
*
* ps:
* 设置高斯模糊是依靠scaleFactor和radius配合使用的,比如这里默认设置是:scaleFactor = 8;radius = 2; 模糊效果和scaleFactor = 1;radius = 20;是一样的,而且效率高
* @param toView 高斯模糊设置到某个View上
* @param radius 模糊度
* @param scaleFactor 缩放比例
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static void blur(Bitmap bkg, View toView,float radius,float scaleFactor) {
//获取View的截图
// Bitmap b = Bitmap.createBitmap(fromView.getWidth(),fromView.getHeight(),Bitmap.Config.ARGB_8888);
// Drawable drawable = fromView.getDrawable();
// Bitmap bkg = ((BitmapDrawable) drawable).getBitmap();
// fromView.buildDrawingCache();
// Bitmap bkg = fromView.getDrawingCache();
int width = bkg.getWidth();
int height = bkg.getHeight();
int newWidth = toView.getMeasuredWidth();
int newHeight = toView.getMeasuredHeight();
float scaleWidth = ((float)newWidth)/width;
float scaleHeight = ((float)newHeight)/height;
//缩放的matrix参数
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth,scaleHeight);
if (radius<1||radius>26) {
scaleFactor = 8;
radius = 2;
}
Bitmap overlay = Bitmap.createBitmap((int) (toView.getMeasuredWidth()/scaleFactor),
(int) (toView.getMeasuredHeight()/scaleFactor), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(overlay);
canvas.translate(-toView.getLeft()/scaleFactor, -toView.getTop()/scaleFactor);
canvas.scale(1 / scaleFactor, 1 / scaleFactor);
Paint paint = new Paint();
paint.setFlags(Paint.FILTER_BITMAP_FLAG);
bkg = Bitmap.createBitmap(bkg,0,0,width,height,matrix,true);
canvas.drawBitmap(bkg, 0, 0, paint);
overlay = Fglass.doBlur(overlay, (int) radius, true);
toView.setBackground(new BitmapDrawable(overlay));
}
/**
* 高斯模糊操作
* @param sentBitmap
* @param radius
* @param canReuseInBitmap
* @return
*/
public static Bitmap doBlur(Bitmap sentBitmap, int radius, boolean canReuseInBitmap) {
Bitmap bitmap;
if (canReuseInBitmap) {
bitmap = sentBitmap;
} else {
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];
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++) {
// Preserve alpha channel: ( 0xff000000 & pix[yi] )
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);
}
}
ok了,效果就出来了。
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