我下载的URL的图像，但图像没有变化后，下载完成。 我在下面输入code，任何人都经历了同样的？

的Java 文件

 公共类MyImgActivity延伸活动{
/ **第一次创建活动时调用。 * /
@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;
    ImageView的imgView =（ImageView的）findViewById（R.id.imageView1）;
    可绘制绘制= LoadImageFromWebOperations("http://www.gophoto.it/view.php?i=https://m.xsw88.com/allimgs/daicuo/20230912/6258.png");

    imgView.setImageDrawable（绘制）;
 }
私人绘制对象LoadImageFromWebOperations（字符串URL）{
    尝试
      {
       InputStream的是=（InputStream的）新的网址（URL）.getContent（）;
       绘制对象D = Drawable.createFromStream（是，SRC名）;
       返回D组;
      }赶上（例外五）{
       的System.out.println（EXC =+ E）;
       返回null;
      }
}
}
 

XML 文件

 ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
机器人：layout_width =FILL_PARENT
机器人：layout_height =FILL_PARENT
机器人：方向=垂直＆GT;

＆LT; ImageView的
    机器人：ID =@ + ID / imageView1
    机器人：layout_height =match_parent
    机器人：layout_width =match_parent＆GT;＆LT; / ImageView的＆GT;
＆LT; / LinearLayout中＆GT;
 

清单文件

 ＆LT;使用-权限的Andr​​oid：名称=android.permission.INTERNET对/＆GT;
 

解决方案

请点击下面code下载和显示图像为ImageView的。

 公共类形象延伸活动{
    / **第一次创建活动时调用。 * /
    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;

        点阵位图= DownloadImage("http://www.gophoto.it/view.php?i=https://m.xsw88.com/allimgs/daicuo/20230912/6258.png");
        ImageView的IMG =（ImageView的）findViewById（R.id.img）;
        img.setImageBitmap（位）;
    }

    私人的InputStream OpenHttpConnection（字符串urlString）抛出IOException异常{
        在的InputStream = NULL;
        INT响应= -1;

        网址URL =新的URL（urlString）;
        URLConnection的康恩= url.openConnection（）;

        如果（！（康涅狄格州的instanceof的HttpURLConnection））
            抛出新的IOException异常（不是一个HTTP连接）;

        尝试 {
            HttpURLConnection的httpConn =（HttpURLConnection类），康涅狄格州;
            httpConn.setAllowUserInteraction（假）;
            httpConn.setInstanceFollowRedirects（真正的）;
            httpConn.setRequestMethod（GET）;
            httpConn.connect（）;
            响应= httpConn.getResponse code（）;
            如果（响应== HttpURLConnection.HTTP_OK）{
                在= httpConn.getInputStream（）;
            }
        }赶上（例外前）{
            抛出新的IOException异常（错误连接）;
        }
        返回;
    }

    私人位图DownloadImage（字符串URL）{
        点阵位图= NULL;
        在的InputStream = NULL;
        尝试 {
            在= OpenHttpConnection（URL）;
            位= BitmapFactory.de codeStream（中）;
            附寄（）;
        }赶上（IOException异常E1）{
            // TODO自动生成的catch块
            e1.printStackTrace（）;
        }
        返回的位图;
    }
}
 

I am downloading an image from url, but the image is not changed after the download is complete. I am entering code below, anybody experienced the same?

Java file

public class MyImgActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ImageView imgView =(ImageView)findViewById(R.id.imageView1);
    Drawable drawable = LoadImageFromWebOperations("http://www.gophoto.it/view.php?i=https://m.xsw88.com/allimgs/daicuo/20230912/6258.png");

    imgView.setImageDrawable(drawable);
 }
private Drawable LoadImageFromWebOperations(String url) {
    try
      {
       InputStream is = (InputStream) new URL(url).getContent();
       Drawable d = Drawable.createFromStream(is, "src name");
       return d;
      }catch (Exception e) {
       System.out.println("Exc="+e);
       return null;
      }
}
}

XML file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ImageView 
    android:id="@+id/imageView1"
    android:layout_height="match_parent" 
    android:layout_width="match_parent"></ImageView>
</LinearLayout>

Manifest file

<uses-permission android:name="android.permission.INTERNET"/>

Please Use below code for download and display image into imageview.

public class image extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Bitmap bitmap = DownloadImage("http://www.gophoto.it/view.php?i=https://m.xsw88.com/allimgs/daicuo/20230912/6258.png");
        ImageView img = (ImageView) findViewById(R.id.img);
        img.setImageBitmap(bitmap);
    }

    private InputStream OpenHttpConnection(String urlString) throws IOException {
        InputStream in = null;
        int response = -1;

        URL url = new URL(urlString);
        URLConnection conn = url.openConnection();

        if (!(conn instanceof HttpURLConnection))
            throw new IOException("Not an HTTP connection");

        try {
            HttpURLConnection httpConn = (HttpURLConnection) conn;
            httpConn.setAllowUserInteraction(false);
            httpConn.setInstanceFollowRedirects(true);
            httpConn.setRequestMethod("GET");
            httpConn.connect();
            response = httpConn.getResponseCode();
            if (response == HttpURLConnection.HTTP_OK) {
                in = httpConn.getInputStream();
            }
        } catch (Exception ex) {
            throw new IOException("Error connecting");
        }
        return in;
    }

    private Bitmap DownloadImage(String URL) {
        Bitmap bitmap = null;
        InputStream in = null;
        try {
            in = OpenHttpConnection(URL);
            bitmap = BitmapFactory.decodeStream(in);
            in.close();
        } catch (IOException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        return bitmap;
    }
}