我想要从html中显示图像,并使用Jsoup
获取图像url源。但是,问题是每篇文章都有不同数量的图片。
所以,我无法修复xml布局中的imageviews数量。经过研究,我知道我可以动态地创建图像视图。因此,我创建ImageViews
并将它们插入Linearlayout
中。但是,我只能看到最后插入的一张图片。
package kr.ac.mju.hanmaeum.activity.notice;
import android.content.Intent;
import android.media.Image;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Html;
import android.util.Log;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import kr.ac.mju.hanmaeum.R;
import kr.ac.mju.hanmaeum.activity.BaseActivity;
import kr.ac.mju.hanmaeum.utils.Constants;
public class NoticeContent extends BaseActivity {
private String url, title, timestamp, content = "";
private TextView timestampView, titleView;
private ImageView contentImageView, contentImageView2;
private GetImageContentTask getImageContentTask;
private ArrayList<String> imgList;
private LinearLayout linearLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_notice_content);
// get intent from MainActivity.
Intent intent = getIntent();
url = intent.getStringExtra("URL");
title = intent.getStringExtra("TITLE");
timestamp = intent.getStringExtra("TIMESTAMP");
// Set layout contents and I will change this using ButterKnife and detach them to initFunction.
timestampView = (TextView) findViewById(R.id.contentTimestamp);
titleView = (TextView) findViewById(R.id.contentTitle);
contentImageView = (ImageView) findViewById(R.id.contentImage);
contentImageView2 = (ImageView) findViewById(R.id.contentImage2);
linearLayout = (LinearLayout) findViewById(R.id.content_Linear);
imgList = new ArrayList<String>();
// get title and timestamp from MainActivity.
titleView.setText(Constants.NOTICE_TITLE + title);
timestampView.setText(Constants.NOTICE_TIMESTAMP + timestamp);
getImageContentTask = new GetImageContentTask();
getImageContentTask.execute();
}
class GetImageContentTask extends AsyncTask<Void, Void, ArrayList<String>> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected ArrayList<String> doInBackground(Void... params) {
try {
Document doc = Jsoup.connect(url).timeout(0).get();
Elements imgs = doc.select("#divView > img");
for(Element img : imgs) {
imgList.add(img.attr("src"));
}
} catch(IOException e) {
e.printStackTrace();
}
return imgList;
}
@Override
protected void onPostExecute(ArrayList<String> imgList) {
super.onPostExecute(imgList);
for(int i=0; i< imgList.size(); i++) {
ImageView imgView = new ImageView(NoticeContent.this);
Glide.with(NoticeContent.this).load(imgList.get(i)).override(200,200).into(imgView);
linearLayout.addView(imgView);
}
}
}
}
最佳答案
您需要向imageviews添加layoutparams,如下所示:
for(int i=0; i< imgList.size(); i++) {
ImageView imgView = new ImageView(NoticeContent.this);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(200, 200);
imgView.setLayoutParams(lp);
Glide.with(NoticeContent.this)
.load(imgList.get(i))
.override(200,200)
.into(imgView);
linearLayout.addView(imgView);
}