Question

无法从android中的https网址加载图片。下面是代码。

        imgView = (ImageView) findViewById(R.id.ImageView01);
        //imgView.setImageResource(R.drawable.scan);

        URL url = new URL("https://idw.ideaservices.net/files/11258/272.jpg");
        InputStream content = (InputStream)url.getContent();
        Drawable d = Drawable.createFromStream(content , "src"); 
        imgView.setImageDrawable(d);

下面是布局的xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000" >

<ImageView
    android:id="@+id/ImageView01"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:adjustViewBounds="true"
    android:scaleType="fitCenter" />

</RelativeLayout>

来自flickr的https网址的任何其他图片都会加载，但不会加载我指定的图片。任何能使它发挥作用的指针都会对我们有所帮助。谢谢。

Answer 1

使用此..可能对您有所帮助..

    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("https://idw.ideaservices.net/files/11258/272.jpg");
        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;
    }
}

从android中的https url加载图片

1 个答案: