跳过网络，从内存中取图片
This commit is contained in:
‘593378212@qq.com’
parent
17ddf94052
commit
c5fe35e302
|
|
@ -0,0 +1,264 @@
|
|||
/*
|
||||
* Copyright (C) 2022 Huawei Device Co., Ltd.
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
import {
|
||||
ImageKnifeComponent,
|
||||
ImageKnifeOption,
|
||||
ImageKnifeGlobal,
|
||||
ImageKnife,
|
||||
ImageKnifeData,
|
||||
RequestOption,
|
||||
Size
|
||||
} from '@ohos/libraryimageknife'
|
||||
import image from '@ohos.multimedia.image';
|
||||
import { BusinessError } from '@ohos.base';
|
||||
import { CacheType } from '@ohos/imageknife/src/main/ets/components/imageknife/RequestOption';
|
||||
|
||||
|
||||
let imageKnife: ImageKnife | undefined = ImageKnifeGlobal.getInstance().getImageKnife();
|
||||
|
||||
@Entry
|
||||
@Component
|
||||
struct testImageKnifeCache {
|
||||
@State url: string = '网络图片地址';
|
||||
@State urlGif: string = 'gif地址';
|
||||
@State urlSvg: string = 'svg地址';
|
||||
@State urlPng: string = 'svg地址';
|
||||
@State urlJpg: string = 'svg地址';
|
||||
@State urlBmp: string = 'svg地址';
|
||||
@State urlWebp: string = 'svg地址';
|
||||
@State imagePixelMap: PixelMap | undefined = undefined;
|
||||
@State imagePixelMap_: PixelMap | undefined = undefined;
|
||||
private index_: number = -1;
|
||||
private tempSize: number = 200;
|
||||
private comSize: Size = {
|
||||
width: this.tempSize,
|
||||
height: this.tempSize,
|
||||
}
|
||||
@State imageKnifeOption: ImageKnifeOption =
|
||||
{
|
||||
loadSrc: $r('app.media.icon'),
|
||||
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
errorholderSrc: $r('app.media.icon_failed')
|
||||
};
|
||||
|
||||
hasUrlCache(request: RequestOption) {
|
||||
|
||||
imageKnife?.isUrlExist(request).then((data: ImageKnifeData) => {
|
||||
|
||||
if (data.isPixelMap()) {
|
||||
if (data.drawPixelMap) {
|
||||
let pixelmap = data.drawPixelMap.imagePixelMap
|
||||
if (pixelmap) {
|
||||
|
||||
if (this.index_ == 1) {
|
||||
this.imagePixelMap = pixelmap;
|
||||
} else if (this.index_ == 2) {
|
||||
this.imagePixelMap_ = pixelmap;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (data.isGIFFrame()) {
|
||||
let index: number = 0
|
||||
let timeId = -1;
|
||||
clearTimeout(timeId);
|
||||
if (data.drawGIFFrame) {
|
||||
if (data.drawGIFFrame.imageGIFFrames) {
|
||||
let renderGif = () => {
|
||||
if (data.drawGIFFrame) {
|
||||
if (data.drawGIFFrame.imageGIFFrames) {
|
||||
let pixelmap = data.drawGIFFrame.imageGIFFrames[index].drawPixelMap
|
||||
let delay = data.drawGIFFrame.imageGIFFrames[index].delay
|
||||
if (pixelmap) {
|
||||
if (this.index_ == 1) {
|
||||
this.imagePixelMap = pixelmap;
|
||||
} else if (this.index_ == 2) {
|
||||
this.imagePixelMap_ = pixelmap;
|
||||
}
|
||||
}
|
||||
index++;
|
||||
if (index == data.drawGIFFrame.imageGIFFrames.length - 1) {
|
||||
index = 0
|
||||
}
|
||||
timeId = setTimeout(renderGif, data!.drawGIFFrame!.imageGIFFrames![index].delay)
|
||||
}
|
||||
}
|
||||
}
|
||||
renderGif()
|
||||
}
|
||||
}
|
||||
}
|
||||
}).catch((err: BusinessError) => {
|
||||
|
||||
});
|
||||
|
||||
}
|
||||
|
||||
build() {
|
||||
Scroll() {
|
||||
Column() {
|
||||
|
||||
Text('图片内存和磁盘读取').fontSize(30);
|
||||
Text('加载的缓存时候关闭掉网络').fontSize(15);
|
||||
|
||||
|
||||
Row() {
|
||||
Button('png')
|
||||
.onClick(() => {
|
||||
this.index_ = 0;
|
||||
this.url = this.urlPng;
|
||||
this.imageKnifeOption =
|
||||
{
|
||||
loadSrc: this.url,
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
errorholderSrc: $r('app.media.icon_failed')
|
||||
}
|
||||
})
|
||||
|
||||
Button('bmp')
|
||||
.onClick(() => {
|
||||
this.index_ = 0;
|
||||
this.url = this.urlBmp;
|
||||
this.imageKnifeOption =
|
||||
{
|
||||
loadSrc: this.url,
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
errorholderSrc: $r('app.media.icon_failed')
|
||||
}
|
||||
})
|
||||
|
||||
Button('webp')
|
||||
.onClick(() => {
|
||||
this.index_ = 0;
|
||||
this.url = this.urlWebp;
|
||||
this.imageKnifeOption =
|
||||
{
|
||||
loadSrc: this.url,
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
errorholderSrc: $r('app.media.icon_failed')
|
||||
}
|
||||
})
|
||||
|
||||
Button('jpg')
|
||||
.onClick(() => {
|
||||
this.index_ = 0;
|
||||
this.url = this.urlJpg;
|
||||
this.imageKnifeOption =
|
||||
{
|
||||
loadSrc: this.url,
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
errorholderSrc: $r('app.media.icon_failed')
|
||||
}
|
||||
})
|
||||
|
||||
Button('gif')
|
||||
.onClick(() => {
|
||||
this.index_ = 0;
|
||||
this.url = this.urlGif;
|
||||
this.imageKnifeOption =
|
||||
{
|
||||
loadSrc: this.url,
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
errorholderSrc: $r('app.media.icon_failed')
|
||||
}
|
||||
})
|
||||
|
||||
Button('svg')
|
||||
.onClick(() => {
|
||||
this.index_ = 0;
|
||||
this.url = this.urlSvg;
|
||||
this.imageKnifeOption =
|
||||
{
|
||||
loadSrc: this.url,
|
||||
placeholderSrc: $r('app.media.icon_loading'),
|
||||
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);
|
||||
|
||||
})
|
||||
|
||||
Button('磁盘图片')
|
||||
.onClick(() => {
|
||||
this.index_ = 2;
|
||||
let request = new RequestOption();
|
||||
request.load(this.url)
|
||||
.setImageViewSize(this.comSize)
|
||||
.setCacheType(CacheType.Cache);
|
||||
this.hasUrlCache(request);
|
||||
|
||||
})
|
||||
}
|
||||
|
||||
Text('网络图').fontSize(15);
|
||||
ImageKnifeComponent({ imageKnifeOption: this.imageKnifeOption })
|
||||
.width(200)
|
||||
.height(200)
|
||||
.backgroundColor(Color.Orange)
|
||||
Text('缓存图').fontSize(15);
|
||||
|
||||
ImageKnifeComponent({
|
||||
imageKnifeOption: {
|
||||
loadSrc: this.imagePixelMap as image.PixelMap
|
||||
}
|
||||
})
|
||||
.width(200)
|
||||
.height(200)
|
||||
.backgroundColor(Color.Orange)
|
||||
Text('磁盘图').fontSize(15);
|
||||
ImageKnifeComponent({
|
||||
imageKnifeOption: {
|
||||
loadSrc: this.imagePixelMap_ as image.PixelMap
|
||||
}
|
||||
})
|
||||
.width(200)
|
||||
.height(200)
|
||||
.backgroundColor(Color.Orange)
|
||||
|
||||
}
|
||||
.alignItems(HorizontalAlign.Center)
|
||||
.width('100%')
|
||||
|
||||
}
|
||||
.width('100%')
|
||||
.height('100%')
|
||||
}
|
||||
|
||||
aboutToAppear() {
|
||||
|
||||
}
|
||||
|
||||
aboutToDisappear() {
|
||||
|
||||
}
|
||||
|
||||
onBackPress() {
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -46,6 +46,5 @@
|
|||
"pages/testImageKnifeAutoHeightPage",
|
||||
"pages/testReusePhotoPage",
|
||||
"pages/testImageKnifeCache"
|
||||
|
||||
]
|
||||
}
|
||||
Loading…
Reference in New Issue