java.lang.OutOfMemoryError 在 ListView 滚动期间 android

Question

一天前我更新了应用程序，第一次收到用户发布的一些崩溃，如下所示：

java.lang.RuntimeException: An error occured while executing doInBackground()
    at android.os.AsyncTask.done(AsyncTask.java:299)
    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
    at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
    at java.util.concurrent.FutureTask.run(FutureTask.java:239)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
    at java.lang.Thread.run(Thread.java:856)
Caused by: java.lang.OutOfMemoryError
    at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
    at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:623)
    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper.loadBitmapFromStream(UrlImageViewHelper.java:109)
    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper.access0(UrlImageViewHelper.java:27)
    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper.onDownloadComplete(UrlImageViewHelper.java:582)
    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper.doInBackground(UrlImageViewHelper.java:648)
    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper.doInBackground(UrlImageViewHelper.java:645)
    at android.os.AsyncTask.call(AsyncTask.java:287)
    at java.util.concurrent.FutureTask.run(FutureTask.java:234)
    ... 3 more

我了解到这与图像处理有关。（应用程序从服务器上检索了很多文章，这些文章显示为图像和标题。）

我做的一个快速解决方案是将图像的大小减小到最大 600 像素宽度（图像大小可变）。

为此，我使用了 com.koushikdutta.urlimageviewhelper 库，版本 1.0.4。我不知道，是否有任何其他库能够处理大量图像，以及如何使用它。

我在 ListView 中使用的一种方式如下所示：

public class NewsAdapter extends BaseAdapter {

    private ArrayList<NewsItem> data;

    private Context context;
    private LayoutInflater layoutInflater;

    public NewsAdapter(Context context, ArrayList<NewsItem> data) {
        this.data = data;
        layoutInflater = LayoutInflater.from(context);
        this.context = context;
    }

    public int getCount() {
        return data.size();
    }

    public Object getItem(int position) {
        return data.get(position);
    }

    public long getItemId(int position) {
        return position;
    }

    @SuppressLint({ "DefaultLocale", "InflateParams" })
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = layoutInflater.inflate(R.layout.news_row, null);
            holder = new ViewHolder();

            holder.image = (ImageView) convertView
                    .findViewById(R.id.image);

            holder.name = (TextView) convertView
                    .findViewById(R.id.time);

            holder.job = (TextView) convertView
                    .findViewById(R.id.title);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }


        //change the font
        Typeface typeFace=Typeface.createFromAsset(context.getAssets(),"fonts/Lato-Regular.ttf");

        holder.name.setTypeface(typeFace);
        holder.job.setTypeface(typeFace);

        UrlImageViewHelper.setUrlDrawable(holder.image,
                data.get(position).getImage_url());

        holder.name.setText( data.get(position).getDate());
        holder.job.setText( data.get(position).getTitle());

        return convertView;
    }

    static class ViewHolder {
        ImageView image;
        TextView name, job;
    }
}

Answer 1

我认为你在将流解码为位图时遇到问题，如果有很多流要转换为位图，那么很可能会导致内存不足。

如果你用过图书馆。尝试更多

Nostra

Glide

Picasso

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