我报名参加金石方案1期挑战——分割10万奖池，这是我的第8篇文章，点击查看活动详情
技能选型
封装ImageLoaderManager
相关依靠配置（在lib_image_loader下）
由于我们是要对glide进行二次封装，所以我们要用glide依靠及其注解库，还要引进rxjava和rxandroid
//glide相关依靠
implementation rootProject.depsLibs.glide
annotationProcessor rootProject.depsLibs.glidecompiler
//占位主工程rxjava
compileOnly rootProject.depsLibs.rxjava
compileOnly rootProject.depsLibs.rxandroid
ImageLoaderManager
图处加载类，外界唯一调用类,直持为view,notifaication,appwidget加载图片
public class ImageLoaderManager {
private ImageLoaderManager() {
}
public static ImageLoaderManager getInstance() {
return ImageLoaderManager.SingletonHolder.instance;
}
private static class SingletonHolder {
private static ImageLoaderManager instance = new ImageLoaderManager();
}
/**
* 为notification加载图
*/
public void displayImageForNotification(Context context, RemoteViews rv, int id,
Notification notification, int NOTIFICATION_ID, String url) {
this.displayImageForTarget(context,
initNotificationTarget(context, id, rv, notification, NOTIFICATION_ID), url);
}
/**
* 不带回调的加载
*/
public void displayImageForView(ImageView imageView, String url) {
this.displayImageForView(imageView, url, null);
}
/**
* 带回调的加载图片办法
*/
public void displayImageForView(ImageView imageView, String url,
CustomRequestListener requestListener) {
Glide.with(imageView.getContext())
.asBitmap()
.load(url)
.apply(initCommonRequestOption())
.transition(withCrossFade())
.into(imageView);
}
/**
* 带回调的加载图片办法
*/
public void displayImageForCircle(final ImageView imageView, String url) {
Glide.with(imageView.getContext())
.asBitmap()
.load(url)
.apply(initCommonRequestOption())
.into(new BitmapImageViewTarget(imageView) {
@Override
protected void setResource(final Bitmap resource) {
RoundedBitmapDrawable circularBitmapDrawable =
RoundedBitmapDrawableFactory.create(imageView.getResources(), resource);
circularBitmapDrawable.setCircular(true);
imageView.setImageDrawable(circularBitmapDrawable);
}
});
}
public void displayImageForViewGroup(final ViewGroup group, String url) {
Glide.with(group.getContext())
.asBitmap()
.load(url)
.apply(initCommonRequestOption())
.into(new SimpleTarget<Bitmap>() {//设置宽高
@Override
public void onResourceReady(@NonNull Bitmap resource,
@Nullable Transition<? super Bitmap> transition) {
final Bitmap res = resource;
Observable.just(resource)
.map(new Function<Bitmap, Drawable>() {
@Override
public Drawable apply(Bitmap bitmap) {
Drawable drawable = new BitmapDrawable(
Utils.doBlur(res, 100, true)
);
return drawable;
}
})
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<Drawable>() {
@Override
public void accept(Drawable drawable) throws Exception {
group.setBackground(drawable);
}
});
}
});
}
/**
* 为非view加载图片
*/
private void displayImageForTarget(Context context, Target target, String url) {
this.displayImageForTarget(context, target, url, null);
}
/**
* 为非view加载图片
*/
private void displayImageForTarget(Context context, Target target, String url,
CustomRequestListener requestListener) {
Glide.with(context)
.asBitmap()
.load(url)
.apply(initCommonRequestOption())
.transition(withCrossFade())
.fitCenter()
.listener(requestListener)
.into(target);
}
/*
* 初始化Notification Target
*/
private NotificationTarget initNotificationTarget(Context context, int id, RemoteViews rv,
Notification notification, int NOTIFICATION_ID) {
NotificationTarget notificationTarget =
new NotificationTarget(context, id, rv, notification, NOTIFICATION_ID);
return notificationTarget;
}
private RequestOptions initCommonRequestOption() {
RequestOptions options = new RequestOptions();
options.placeholder(R.mipmap.b4y)
.error(R.mipmap.b4y)
.diskCacheStrategy(DiskCacheStrategy.AUTOMATIC)
.skipMemoryCache(false)
.priority(Priority.NORMAL);
return options;
}
}
public class Utils {
/**
* 毛玻璃含糊算法
*/
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);
}
}
