如何从url为imageView设置图像

Question

我想使用Url在ImageView中设置Image,例如我有这个url

http://www.google.iq/imgres?hl=en&biw=1366&bih=667&tbm=isch&tbnid=HjzjsaANDXVR9M:&imgrefurl=http://www.vectortemplates.com/raster-batman.php&docid=FxbVmggVf--0dM&imgurl=http:/ /www.vectortemplates.com/raster/batman-logo-big.gif&w=2072&h=1225&ei=Zeo_UoSWIMaR0AXl_YHIBg&zoom=1

但是没有设置url的选项

Answer 1

编辑:

创建一个扩展AsyncTask的类

public class ImageLoadTask extends AsyncTask<Void, Void, Bitmap> {

    private String url;
    private ImageView imageView;

    public ImageLoadTask(String url, ImageView imageView) {
        this.url = url;
        this.imageView = imageView;
    }

    @Override
    protected Bitmap doInBackground(Void... params) {
        try {
            URL urlConnection = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) urlConnection
                    .openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap myBitmap = BitmapFactory.decodeStream(input);
            return myBitmap;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(Bitmap result) {
        super.onPostExecute(result);
        imageView.setImageBitmap(result);
    }

}

并称之为 new ImageLoadTask(url, imageView).execute();

直接法:

使用此方法并将您的URL作为字符串传递.它返回一个位图.将位图设置为ImageView.

public static Bitmap getBitmapFromURL(String src) {
    try {
        Log.e("src",src);
        URL url = new URL(src);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap myBitmap = BitmapFactory.decodeStream(input);
        Log.e("Bitmap","returned");
        return myBitmap;
    } catch (IOException e) {
        e.printStackTrace();
        Log.e("Exception",e.getMessage());
        return null;
    }
}

然后这就像ImageView一样:

imageView.setImageBitmap(getBitmapFromURL(url));

并且不要忘记maifest中的这个许可.

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

注意:

尝试从另一个线程或AsyncTask调用此方法,因为我们正在执行网络操作.

Answer 2

你也可以让Square的Picasso图书馆做繁重的工作:

Picasso
    .with(context)
    .load("http://...")
    .into(imageView);

作为奖励,您可以获得缓存,转换等.

Answer 3

尝试:

URL newurl = new URL(photo_url_str); 
mIcon_val = BitmapFactory.decodeStream(newurl.openConnection() .getInputStream()); 
profile_photo.setImageBitmap(mIcon_val);

更多来自

1)如何在Android中加载-to-imageview-by-url-in-android.

2)android-make-an-image-at-a-url-equal-to-imageviews-image

Answer 4

使用Glide库：

Glide.with(context)
  .load(new File(url)
  .diskCacheStrategy(DiskCacheStrategy.ALL)
  .into(imageView);

Answer 5

您可以使用Picasso或Glide。

Picasso.get()
   .load(your_url)
   .into(imageView);


Glide.with(context)
   .load(your_url)
   .into(imageView);