目錄:
1、開啟明文傳輸
2、許可權申請
3、引入http外掛
4、案例展示
5、《鴻蒙OS前端開發入門指南》文章合集
開啟明文傳輸 在config.json配置檔案新增如下配置(如果不開啟可以不配置)
"deviceConfig": {
"default": {
"network": {
"usesCleartext": true
}
}
},
許可權申請 在配置檔案module中新增如下
"reqPermissions": [{
"name":"ohos.permission.INTERNET"
}],
引入zzr老師寫的鴻蒙http外掛
implementation 'com.zzrv5.zzrhttp:ZZRHttp:1.0.1'
案例1
使用方式,
new ImageNetWork(”當前的abilitySlice“,“創件的Image組建”,"圖片地址").start();
網路圖片類
package com.example.shangjinlieren.compontents;
import com.zzrv5.mylibrary.ZZRCallBack;
import com.zzrv5.mylibrary.ZZRHttp;
import com.zzrv5.mylibrary.ZZRResponse;
import ohos.aafwk.ability.AbilitySlice;
import ohos.agp.components.Image;
import ohos.hiviewdfx.HiLog;
import ohos.hiviewdfx.HiLogLabel;
import ohos.media.image.ImageSource;
import ohos.media.image.PixelMap;
public class ImageNetWork {
private final static HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0, "HmOSImageLoader");
private AbilitySlice abilitySlice;
private Image image;
private String url;
public ImageNetWork(AbilitySlice abilitySlice, Image image, String url) {
this.abilitySlice = abilitySlice;
this.image = image;
this.url = url;
}
public void start() {
ZZRHttp.get(url, new ZZRCallBack.CallBackString() {
@Override
public void onFailure(int code, String errorMessage) {
//http訪問出錯了,此部分內容在主執行緒中工作;
//可以更新UI等操作,請不要執行阻塞操作。
System.out.println("errorMessage"+errorMessage);
}
@Override
public String onParseResponse(ZZRResponse response) {
//建立圖片源
ImageSource imageSource = ImageSource.create(response.inputStream, null);
//根據圖片源建立點陣圖
PixelMap pixelMap = imageSource.createPixelmap(null);
//需要非同步渲染UI
abilitySlice.getUITaskDispatcher().asyncDispatch(new Runnable() {
@Override
public void run() {
//展示到元件上
System.out.println("掛載了");
image.setPixelMap(pixelMap);
pixelMap.release();
}
});
return super.onParseResponse(response);
}
@Override
public void onResponse(String response) {
}
});
}
}
作者:BLUESKYHOST
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