</p> 这里没有广告,这里没有跑分,数据对比Google一下比比皆是,额···那我说什么好(ノಠ益ಠ)ノ彡┻━┻。 对啊,女朋友···呸呸呸,那么就来讲一讲用哪些库好(你应该已经在知道了)。剧透一下(主要推荐Fresco),剧透一下(主要推荐Fresco),剧透一下(主要推荐Fresco)~~~请看到最后好不。
补充一句:记得把初始化放到Applicant里面,不然每次都会被清缓存,加载的时候用单例。
transformations
聪明的你一定知道了,因为我要说Fresco,那么为什么不用Glide了呢?挺好的啊~这·····因为某次我要把通过图片URL拿本地缓存的时候,我居然找不到同步获取的方法(ノಠ益ಠ)ノ彡┻━┻,除了异步的回调之外,我居然找不到····而且听说Fresco对GIF和webp支持更好,不,我不管,我要换女朋友。
</p>
1、 首先推荐 FrescoImageView ,这个库继承了SimpleDraweeView,封装了需要的一些接口,让人使用起来更方便,小喵在这基础在做一些调整和封装,具体看下面:
利用FrescoImageView封装好的接口,使用起来是不是很方便啊<( ̄︶ ̄)↗
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, boolean pathIsLocal) {
loadFrescoImage(frescoImageView, uri, defaultImg, 0, false, pathIsLocal, true, null, null);
}
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, boolean pathIsLocal, Point showSize) {
loadFrescoImage(frescoImageView, uri, defaultImg, 0, false, pathIsLocal, true, showSize, null);
}
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, int radius, boolean pathIsLocal, Point showSize) {
loadFrescoImage(frescoImageView, uri, defaultImg, radius, false, pathIsLocal, true, showSize, null);
}
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, boolean pathIsLocal, Postprocessor postprocessor) {
loadFrescoImage(frescoImageView, uri, defaultImg, 0, false, pathIsLocal, true, null, postprocessor);
}
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, boolean pathIsLocal, Point point, Postprocessor postprocessor) {
loadFrescoImage(frescoImageView, uri, defaultImg, 0, false, pathIsLocal, true, point, postprocessor);
}
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, int radius, boolean pathIsLocal, Point point, Postprocessor postprocessor) {
loadFrescoImage(frescoImageView, uri, defaultImg, radius, false, pathIsLocal, true, point, postprocessor);
}
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg, int radius, boolean pathIsLocal) {
loadFrescoImage(frescoImageView, uri, defaultImg, radius, false, pathIsLocal, true, null, null);
}
public static void loadFrescoImageCircle(FrescoImageView frescoImageView, String uri, int defaultImg, boolean pathIsLocal) {
loadFrescoImage(frescoImageView, uri, defaultImg, 0, true, pathIsLocal, true, null, null);
}
/**
* @param frescoImageView
* @param uri URL或者本地uri
* @param defaultImg 默认资源
* @param radius 弧形角度
* @param showCircle 是否显示圆
* @param pathIsLocal 是否加载的是本地资源
* @param gifAnima 是否执行GIF动画
* @param showSize 是否修改显示大小
* @param postprocessor 对图像进行二次处理
*/
public static void loadFrescoImage(FrescoImageView frescoImageView, String uri, int defaultImg,
int radius, boolean showCircle, boolean pathIsLocal, boolean gifAnima,
Point showSize, Postprocessor postprocessor) {
init(frescoImageView, radius, showCircle, gifAnima, showSize, postprocessor);
if (pathIsLocal) {
frescoImageView.loadLocalImage(uri, defaultImg);
} else {
frescoImageView.loadView(uri, defaultImg);
}
}
private static void init(FrescoImageView frescoImageView, int radius, boolean showCircle, boolean gifAnima,
Point showSize, Postprocessor postprocessor) {
frescoImageView.setAnim(gifAnima);
frescoImageView.setCornerRadius(radius);
frescoImageView.setFadeTime(300);
if (showCircle)
frescoImageView.asCircle();
if (postprocessor != null)
frescoImageView.setPostProcessor(postprocessor);
if (showSize != null) {
frescoImageView.setResize(showSize);
}
}
2、 fresco-processors 这个库做对图像的二次处理,继承于Postprocessor ,让我们用图片说话: 高斯模糊,改变形状、颜色、马赛克无所不能。
fresco-processors
3、PhotoDraweeView 功能与丁丁大名的PhotoView一样,支持双击放大,单击返回,手动放大与缩小等,无缝接入Fresco,哎哟喂,不错哟。
4、<a href="">subsampling-scale-image-view 是不是很羡慕微博和微信加载高清长图却不OOM,每次都被产品还有测试说的火冒三丈,这个库让你高潮,它采用的是BitmapRegionDecoder的方式,分段加载显示超长图,拒绝OOM,而且,而且,而且支持支持支持:双击放大,单击返回,手动放大等,目前只能加载本地,不怕不怕,可以下下来用缓存啊:
我的逻辑是,当图片的长度大于屏幕的2倍是就使用这个加载(宽度? i dont care)
final SubsamplingScaleImageView imageView = (SubsamplingScaleImageView)
final String tmpUri = list.get(position).getUri();
final Uri uri = Uri.parse((tmpUri .startsWith("http")) ? tmpUri : (tmpUri .startsWith("file://")) ? tmpUri : "file://" + tmpUri );
if (tmpUri .startsWith("http")) {
File file = FrescoUtil.getLocalCache(uri);//Fresco的本地缓存
if (file != null && file.exists()) {
imageView.setImage(ImageSource.uri(file.getAbsolutePath()));
} else {
FrescoUtil.loadImage(tmpUri , context, 0, 0, new LoadingListener() {
@Override
public void onSuccess(Bitmap bitmap) {
File file = FrescoUtil.getLocalCache(uri);
if (file != null && file.exists()) {
imageView.setImage(ImageSource.uri(file.getAbsolutePath()));
}
}
@Override
public void onFail() {
}
});
}
} else {
imageView.setImage(ImageSource.uri(tmpUri .replace("file://", "")));
}
</p>
ImagePipelineConfig config = ImagePipelineConfig.newBuilder(this)
.setDownsampleEnabled(true)
.build();
Fresco.initialize(this, config);
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
switch (newState) {
case RecyclerView.SCROLL_STATE_IDLE://停止滑动
if (Fresco.getImagePipeline().isPaused())
Fresco.getImagePipeline().resume();
break;
case RecyclerView.SCROLL_STATE_DRAGGING:
if (preScrollState == RecyclerView.SCROLL_STATE_SETTLING) {
//触摸滑动不需要加载
Fresco.getImagePipeline().pause();
} else {
//触摸滑动需要加载
if (Fresco.getImagePipeline().isPaused())
Fresco.getImagePipeline().resume();
}
break;
case RecyclerView.SCROLL_STATE_SETTLING://惯性滑动
Fresco.getImagePipeline().pause();
break;
}
preScrollState = newState;
}
getWindow().setSharedElementEnterTransition(DraweeTransition.createTransitionSet(
ScalingUtils.ScaleType.CENTER_CROP, ScalingUtils.ScaleType.CENTER_CROP));
getWindow().setSharedElementReturnTransition(DraweeTransition.createTransitionSet(
ScalingUtils.ScaleType.CENTER_CROP, ScalingUtils.ScaleType.CENTER_CROP));
/**
* @param uri
* @param context
* @param width
* @param height
* @param listener
*/
public static void getImageLoading(String uri, Context context, int width, int height, final LoadingListener listener) {
getBitmapWithProcessor(uri, context, width, height, null, listener);
}
/**
* @param uri
* @param context
* @param width
* @param height
* @param processor 处理图片的
* @param listener
*/
public static void getImageLoading(final String uri, Context context, final int width, final int height,
BasePostprocessor processor, final LoadingListener listener) {
ResizeOptions resizeOptions = null;
if (width != 0 && height != 0) {
resizeOptions = new ResizeOptions(width, height);
}
ImageRequest imageRequest = ImageRequestBuilder.newBuilderWithSource(Uri.parse(uri))
.setProgressiveRenderingEnabled(false) //不渲染
.setPostprocessor(processor)
.setResizeOptions(resizeOptions)
.build();
ImagePipeline imagePipeline = Fresco.getImagePipeline();
DataSource<CloseableReference<CloseableImage>> dataSource = imagePipeline.fetchDecodedImage(imageRequest, context);
dataSource.subscribe(new BaseBitmapDataSubscriber() {
@Override
protected void onNewResultImpl(Bitmap bitmap) {
}
@Override
protected void onFailureImpl(DataSource<CloseableReference<CloseableImage>> dataSource) {
listener.onFail();
}
}, CallerThreadExecutor.getInstance());
}
public static boolean isLocalCached(Uri uri) {
ImagePipeline imagePipeline = Fresco.getImagePipeline();
DataSource<Boolean> dataSource = imagePipeline.isInDiskCache(uri);
if (dataSource == null) {
return false;
}
ImageRequest imageRequest = ImageRequest.fromUri(uri);
CacheKey cacheKey = DefaultCacheKeyFactory.getInstance()
.getEncodedCacheKey(imageRequest, YHApplication.get());
BinaryResource resource = ImagePipelineFactory.getInstance()
.getMainFileCache().getResource(cacheKey);
return resource != null && dataSource.getResult() != null && dataSource.getResult();
}
public static File getLocalCache(Uri uri) {
if (!isLocalCached(uri))
return null;
ImageRequest imageRequest = ImageRequest.fromUri(uri);
CacheKey cacheKey = DefaultCacheKeyFactory.getInstance()
.getEncodedCacheKey(imageRequest, YHApplication.get());
BinaryResource resource = ImagePipelineFactory.getInstance()
.getMainFileCache().getResource(cacheKey);
File file = ((FileBinaryResource) resource).getFile();
return file;
}
这波就没有DEMO了,如果你们有需要我再加吧。(说的有人看一样(ノಠ益ಠ)ノ彡┻━┻。)。
个人Github : https://github.com/CarGuo
2016-11-16晚上含泪补上DEMO: https://github.com/CarGuo/FrescoUtils