使用Picasso加载图像时，我面临outOfMemory异常。
我正在使用OkHttp创建Picasso Builder，并创建了Picasso Singleton类来缓存图像。
场景：
我有100多个要加载的图像供稿。我正在按组获取图像，每组都有25个图像URL，这些URL是我用毕加索设置的。我正在使用recyclerview，并且每当有新的图像集出现时，我都会调用adapter.notifyDataSetChanged（）。我在进行改造以获得下一组并添加到现有列表并调用-adapter.notifyDataSetChanged（）时，加载第二组和第三组的第一组-没有问题。对于第三个设置，当我调用adapter.NotifyDataSetChanged（）应用程序崩溃时出现outOfMemoryException
但
当我加载全部3组75张图像时，我不会遇到任何问题。
码：
应用程序类-我将在其中构建毕加索。
Picasso.Builder builder = new Picasso.Builder(this)
.memoryCache(new LruCache(24000));
builder.downloader(new OkHttpDownloader(this,Integer.MAX_VALUE));
Picasso built = builder.build();
built.setLoggingEnabled(true);
毕加索单例课程：
public class PicassoCache {
/**
* Static Picasso Instance
*/
private static Picasso picassoInstance = null;
/**
* PicassoCache Constructor
*
* @param context application Context
*/
private PicassoCache (Context context) {
Downloader downloader = new OkHttpDownloader(context, Integer.MAX_VALUE);
Picasso.Builder builder = new Picasso.Builder(context);
builder.downloader(downloader);
picassoInstance = builder.build();
}
/**
* Get Singleton Picasso Instance
*
* @param context application Context
* @return Picasso instance
*/
public static Picasso getPicassoInstance (Context context) {
if (picassoInstance == null) {
new PicassoCache(context);
return picassoInstance;
}
return picassoInstance;
}
}
使用Picasso设置/加载图像的代码。
PicassoCache.getPicassoInstance(context).load(url).placeholder(R.mipmap.banner_placeholder).into(mView);
当数据集更改时，我在其中更新现有列表以加载的代码。
内部Retorfit OnSuccess消息：
if (response.code() == 200) {
List<CampaignCard> newCampaigns = response.body().getCampaigns();
for (int i = 0; i < newCampaigns.size(); i++) {
if (!campaignCards.contains(newCampaigns.get(i))) {
campaignCards.add(newCampaigns.get(i));
}
}
dashBoardAdapter.notifyDataSetChanged();
} else if (response.code() == Params.CODE_422) {
Utils.ShowServiceErrorMessages(getActivity(), response);
} else if (response.code() == Params.CODE_401) {
Utils.Logout(getActivity());
}
适配器类别：
public class DashboardAdapter extends RecyclerView.Adapter<DashboardAdapter.DashboardViewHolder> implements View.OnClickListener {
private static final int VIEW_TYPE_CAMPAIGN = 1;
private static final int VIEW_TYPE_FEED = 2;
DashboardViewHolder holder;
protected List list;
protected int viewTypeLayout;
Context context;
int position;
Dashboard.DashboardActionList actionList;
Map<String, SourceContent> mPreviewLinkMapper;
ViewGroup parent;
//Picasso p;
public DashboardAdapter(List list, int viewTypeLayout) {
this.list = list;
this.viewTypeLayout = viewTypeLayout;
}
public DashboardAdapter(List list, int viewTypeLayout, Context context, Map<String, SourceContent> mPreviewLinkMapper) {
this.list = list;
this.viewTypeLayout = viewTypeLayout;
this.mPreviewLinkMapper = mPreviewLinkMapper;
}
@Override
public DashboardViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
context = parent.getContext();
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_feed, parent, false);
return new DashboardViewHolder(view, 2);
}
@Override
public void onBindViewHolder(DashboardViewHolder holder, final int position) {
BindFeedData(holder, position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemCount() {
return list.size();
}
@SuppressWarnings("unchecked")
private void BindFeedData(DashboardViewHolder holder, int position) {
List<Feed> feeds = (List<Feed>) list;
if (holder.mBannerImage != null) {
if (feeds.get(position).getCampaign().getParticipation().getType().toLowerCase().contains("video")) {
holder.mPlayIcon.setVisibility(View.VISIBLE);
String url = feeds.get(position).getCampaign().getParticipation().getThumbnail_url();
Utils.LoadImages(context, url, holder.mBannerImage, false);
} else if (feeds.get(position).getCampaign().getParticipation().getType().toLowerCase().contains("gif")) {
holder.mPlayIcon.setVisibility(View.GONE);
String url = feeds.get(position).getCampaign().getParticipation().getPost_file();
Utils.loadGif(context, url, holder.mBannerImage);
} else if (feeds.get(position).getCampaign().getParticipation().getType().toLowerCase().contains("link") ||
feeds.get(position).getCampaign().getParticipation().getType().toLowerCase().contains("youtube")) {
holder.mPlayIcon.setVisibility(View.GONE);
String slug = feeds.get(position).getCampaign().getSlug();
List<String> images = mPreviewLinkMapper.get(slug).getImages();
Utils.LoadImages(context, images.get(0), holder.mBannerImage, false);
} else {
holder.mPlayIcon.setVisibility(View.GONE);
holder.mBannerImage.setVisibility(View.VISIBLE);
String url = feeds.get(position).getCampaign().getParticipation().getPost_file();
Utils.LoadImages(context, url, holder.mBannerImage, false);
}
}
if (holder.mBrandLogo != null) {
Utils.LoadImages(context, feeds.get(position).getInfluencer().getProfile_picture_url(), holder.mBrandLogo, true);
}
holder.mTitle.setText(feeds.get(position).getInfluencer().getName());
holder.mSubTitle.setText(feeds.get(position).getCampaign().getName());
holder.mTime.setText(feeds.get(position).getCampaign().getTimestamp());
holder.mDescription.setText(feeds.get(position).getCampaign().getParticipation().getPost_content());
holder.mEngagement.setText(feeds.get(position).getCampaign().getParticipation().getMetrics().getEngagements());
holder.mImpresion.setText(feeds.get(position).getCampaign().getParticipation().getMetrics().getImpressions());
}
}
public static class DashboardViewHolder extends RecyclerView.ViewHolder {
ImageView mBannerImage, mFacebook, mTwitter, mInstagram, mPlayIcon, mHotIcon, mLocationIcon;
CircularImageView mBrandLogo;
CustomTextViewRegular mDescription, mTime, mOption1, mOption2, mOption3;
CustomTextViewDemi mTitle, mSubTitle, mImpresion, mEngagement;
LinearLayout mDetailsLayout;
LinearLayout mOptionLayout1, mOptionLayout2, mOptionLayout3;
public ViewGroup dropPreview;
TableRow mTableOptions;
public DashboardViewHolder(View v, int viewtype) {
super(v);
InitFeedViews(v);
}
private void InitFeedViews(View v) {
mTitle = (CustomTextViewDemi) v.findViewById(R.id.adapterHeaderLayoutTitle);
mSubTitle = (CustomTextViewDemi) v.findViewById(R.id.adapterHeaderLayoutSubTitle);
mBrandLogo = (CircularImageView) v.findViewById(R.id.adapterHeaderLayoutLogo);
mTime = (CustomTextViewRegular) v.findViewById(R.id.adapterHeaderLayoutTime);
mBannerImage = (ImageView) v.findViewById(R.id.adapterFeedBannerImage);
mPlayIcon = (ImageView) v.findViewById(R.id.adapterFeedPlayIocn);
mImpresion = (CustomTextViewDemi) v.findViewById(R.id.adapterFeedImpressions);
mEngagement = (CustomTextViewDemi) v.findViewById(R.id.adapterFeedEngagements);
mDescription = (CustomTextViewRegular) v.findViewById(R.id.adapterFeedDescription);
dropPreview = (LinearLayout) v.findViewById(R.id.drop_preview);
}
}
}
最佳答案
如果有毕加索库，您将面临很多“内存不足”的问题，我建议您使用Glide库。
我尝试了很多“内存不足”异常，但最后在使用滑行时效果很好。
关于android - 内存不足异常-对于使用Picasso加载图像时的adapter.notifiyDataSetChanged()，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/40989155/