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ImageKnife
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跳过网络，从内存中取图片，md文档

This commit is contained in:
‘593378212@qq.com’ 2024-04-07 12:44:23 +08:00
parent 179917f23b
commit c5ff1753c6
3 changed files with 110 additions and 94 deletions
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26
entry/src/main/ets/pages/testImageKnifeCache.ets
View File

@ -55,8 +55,11 @@ struct testImageKnifeCache {
errorholderSrc: $r('app.media.icon_failed')
};
hasUrlCache(request: RequestOption) {
imageKnife?.isUrlExist(request).then((data: ImageKnifeData) => {
hasUrlCache(url: string, cacheType: CacheType = CacheType.Default, size: Size = {
width: 0,
height: 0
}) {
imageKnife?.isUrlExist(url, cacheType, size).then((data: ImageKnifeData) => {
clearTimeout(this.timeId);
if (data.isPixelMap()) {
if (data.drawPixelMap) {
@ -183,31 +186,26 @@ struct testImageKnifeCache {
errorholderSrc: $r('app.media.icon_failed')
}
})
}
Row() {
Button('缓存图片')
.onClick(() => {
this.index_ = 1;
let request = new RequestOption();
request.load(this.url)
.setImageViewSize(this.comSize)
.setCacheType(CacheType.Cache);
this.hasUrlCache(request);
this.hasUrlCache(this.url, CacheType.Cache, this.comSize);
})
Button('磁盘图片')
.onClick(() => {
this.index_ = 2;
let request = new RequestOption();
request.load(this.url)
.setImageViewSize(this.comSize)
.setCacheType(CacheType.Disk);
this.hasUrlCache(request);
this.hasUrlCache(this.url, CacheType.Disk, this.comSize);
})
Button('默认')
.onClick(() => {
this.index_ = 2;
this.hasUrlCache(this.url);
})
}

51
library/src/main/ets/components/imageknife/ImageKnife.ets
View File

@ -328,35 +328,51 @@ export class ImageKnife {
return this.parseSource(request);
}
public isUrlExist(request: RequestOption): Promise<ImageKnifeData> {
public isUrlExist(url: string, cacheType: CacheType = CacheType.Default, size: Size = {
width: 0,
height: 0
}): Promise<ImageKnifeData> {
return new Promise((resolve, reject) => {
let request = new RequestOption();
request.load(url)
.setImageViewSize(size)
.setCacheType(cacheType);
this.generateDataCacheKey(request);
let loadComplete = (imageKnifeData: ImageKnifeData) => {
resolve(imageKnifeData);
}
let loadError = (err ?: BusinessError | string) => {
if (request.cacheType == CacheType.Default) {
this.loadMemoryDiskIsUrl(request, loadComplete, loadError);
}
reject(err);
}
this.loadMemoryCacheAndDiskFrom(request, loadComplete, loadError);
if (request.cacheType == CacheType.Cache) {
this.loadMemoryCacheIsUrl(request, loadComplete, loadError);
} else if (request.cacheType == CacheType.Disk) {
this.loadMemoryDiskIsUrl(request, loadComplete, loadError);
}
else if (request.cacheType == CacheType.Default) {
this.loadMemoryCacheIsUrl(request, loadComplete, loadError);
}
})
}
loadMemoryCacheAndDiskFrom(request: RequestOption, onComplete: (imageKnifeData: ImageKnifeData) => void | PromiseLike<ImageKnifeData>, onError: (err?: BusinessError | string) => void) {
if (request.cacheType == CacheType.Cache) {
loadMemoryCacheIsUrl(request: RequestOption, onComplete: (imageKnifeData: ImageKnifeData) => void | PromiseLike<ImageKnifeData>, onError: (err?: BusinessError | string) => void) {
let cache = this.memoryCacheProxy.loadMemoryCache(request.generateCacheKey, true);
if (cache == null || typeof cache == 'undefined') {
onError("No data in cache!")
}else {
} else {
cache.waitSaveDisk = false;
//2.网络缓存有数据，返回
onComplete(cache);
}
}
}else if (request.cacheType == CacheType.Disk){
loadMemoryDiskIsUrl(request: RequestOption, onComplete: (imageKnifeData: ImageKnifeData) => void | PromiseLike<ImageKnifeData>, onError: (err?: BusinessError | string) => void) {
let cached: ArrayBuffer = DiskLruCache.getFileCacheByFile(this.diskMemoryCache.getPath() as string, request.generateDataKey) as ArrayBuffer;
if (cached != null) {
let filetype: string | null = this.fileTypeUtil.getFileType(cached);
@ -406,7 +422,7 @@ export class ImageKnife {
//6.磁盘无数据，返回onError
onError("No data in disk cache!")
}
}
}
@ -693,7 +709,7 @@ export class ImageKnife {
if ((typeof (data as PixelMap).isEditable) == 'boolean') {
let imageKnifeData = ImageKnifeData.createImagePixelMap(ImageKnifeType.PIXELMAP, data as PixelMap);
request.placeholderOnComplete(imageKnifeData)
this.memoryCacheProxy.putValue(request.placeholderCacheKey,imageKnifeData)
this.memoryCacheProxy.putValue(request.placeholderCacheKey, imageKnifeData)
} else {
request.placeholderOnError("request placeholder error")
}
@ -701,7 +717,7 @@ export class ImageKnife {
if ((typeof (data as PixelMap).isEditable) == 'boolean') {
let imageKnifeData = ImageKnifeData.createImagePixelMap(ImageKnifeType.PIXELMAP, data as PixelMap);
request.retryholderOnComplete(imageKnifeData)
this.memoryCacheProxy.putValue(request.retryholderCacheKey,imageKnifeData)
this.memoryCacheProxy.putValue(request.retryholderCacheKey, imageKnifeData)
} else {
request.retryholderOnError("request retryholder error")
}
@ -709,7 +725,7 @@ export class ImageKnife {
if ((typeof (data as PixelMap).isEditable) == 'boolean') {
let imageKnifeData = ImageKnifeData.createImagePixelMap(ImageKnifeType.PIXELMAP, data as PixelMap);
request.errorholderOnComplete(imageKnifeData)
this.memoryCacheProxy.putValue(request.errorholderCacheKey,imageKnifeData)
this.memoryCacheProxy.putValue(request.errorholderCacheKey, imageKnifeData)
} else {
request.errorholderOnError("request errorholder error")
}
@ -718,13 +734,13 @@ export class ImageKnife {
let imageKnifeData = ImageKnifeData.createImagePixelMap(ImageKnifeType.PIXELMAP, data as PixelMap);
imageKnifeData.needSaveDisk = true;
request.loadComplete(imageKnifeData)
this.memoryCacheProxy.putValue(request.generateCacheKey,imageKnifeData)
this.memoryCacheProxy.putValue(request.generateCacheKey, imageKnifeData)
this.setDiskCache(request)
} else if ((data as GIFFrame[]).length > 0) {
let imageKnifeData = ImageKnifeData.createImageGIFFrame(ImageKnifeType.GIFFRAME, data as GIFFrame[]);
imageKnifeData.needSaveDisk = true;
request.loadComplete(imageKnifeData)
this.memoryCacheProxy.putValue(request.generateCacheKey,imageKnifeData)
this.memoryCacheProxy.putValue(request.generateCacheKey, imageKnifeData)
this.setDiskCache(request)
} else {
request.loadError("request resources error")
@ -736,7 +752,7 @@ export class ImageKnife {
}
private setDiskCache(request: RequestOption):void{
private setDiskCache(request: RequestOption): void {
try {
// let diskMemoryCache = ImageKnifeGlobal.getInstance().getImageKnife()?.getDiskMemoryCache();
let dataArraybuffer: ArrayBuffer = DiskLruCache.getFileCacheByFile(this.diskMemoryCache.getPath() as string, request.generateDataKey) as ArrayBuffer;
@ -827,7 +843,8 @@ export class ImageKnife {
if (cachedPath == null || cachedPath == "" || cachedPath == undefined) {
let request = new RequestOption();
request.load(url)
.addListener({ callback: (err: BusinessError | string, data: ImageKnifeData) => {
.addListener({
callback: (err: BusinessError | string, data: ImageKnifeData) => {
if (err) {
reject(err)
} else {

1
library/src/main/ets/components/imageknife/RequestOption.ets
View File

@ -65,6 +65,7 @@ export interface Size {
}
export enum CacheType {
Default,
//缓存
Cache,
//磁盘