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社区首页 >问答首页 >将Glide库与片段适配器结合使用

问将Glide库与片段适配器结合使用
EN

Stack Overflow用户
提问于 2020-04-28 22:07:14
回答 1查看 950关注 0票数 1

我有一个适配器类，用来用cardview填充recyclerview项。此RecyclerView位于片段下。在这个适配器中，我尝试将一个图像绑定到位于cardview布局下的imageview。我正在尝试通过适配器类中的以下方法来实现这一点：

代码语言：javascript
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public void onBindViewHolder(@NonNull ProductViewHolder holder, int position) {
    Product product = myProducts.get(position);
    holder.productTitle.setText(product.getProductName());
    holder.productDesc.setText(product.getDescription());
    Uri uri = Uri.parse(product.getImageUri());
    Glide.with(/*WHAT SHOULD I PASS HERE??*/).load(new File(uri.getPath())).into(holder.productImage);
}

每个产品实例都有一个包含图像路径的字段，我想采用该路径，找到相应的图像并将其绘制在cardview项中。但我不知道应该将什么作为参数传递给Glide.with()。提前感谢，并请指出任何地方似乎有问题。我是一个非常新手的android编程。

编辑:下面是holder类。

代码语言：javascript
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class ProductViewHolder extends RecyclerView.ViewHolder {

    private ImageView productImage;
    private TextView productTitle;
    private TextView productDesc;

    public ProductViewHolder(View itemView) {
        super(itemView);
        productImage = itemView.findViewById(R.id.product_image);
        productTitle = itemView.findViewById(R.id.product_title);
        productDesc = itemView.findViewById(R.id.product_desc);
    }

}

我试过这个

代码语言：javascript
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Glide.with(holder.itemView).load(new File(uri.getPath())).into(holder.productImage);

但它给出了如下错误：

代码语言：javascript
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class com.bumptech.glide.load.engine.GlideException: Failed to load resource
There were 3 causes:
java.io.IOException(File unsuitable for memory mapping)
java.io.FileNotFoundException(/document/msf:24: open failed: ENOENT (No such file or directory))
java.io.FileNotFoundException(open failed: ENOENT (No such file or directory))

这是我的适配器类：

代码语言：javascript
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 public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.ProductViewHolder> {

    private final LayoutInflater myInflater;
    private List<Product> myProducts = new ArrayList<>();
    private Context context;

    public ProductAdapter(Context context) {
        this.context = context;
        myInflater = LayoutInflater.from(context);
    }

    @NonNull
    @Override
    public ProductViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View itemView = myInflater.inflate(R.layout.card_view_product, parent, false);
        return new ProductViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(@NonNull ProductViewHolder holder, int position) {
        Product product = myProducts.get(position);
        holder.productTitle.setText(product.getProductName());
        holder.productDesc.setText(product.getDescription());
        Uri uri = Uri.parse(product.getImageUri());
        Glide.with(context).load(new File(uri.getPath())).into(holder.productImage);
    }

    @Override
    public int getItemCount() {
        return myProducts.size();
    }

    public void setProducts(List<Product> products) {
        myProducts = products;
        notifyDataSetChanged();
    }

    class ProductViewHolder extends RecyclerView.ViewHolder {

        private ImageView productImage;
        private TextView productTitle;
        private TextView productDesc;

        public ProductViewHolder(View itemView) {
            super(itemView);
            productImage = itemView.findViewById(R.id.product_image);
            productTitle = itemView.findViewById(R.id.product_title);
            productDesc = itemView.findViewById(R.id.product_desc);
        }

    }
}

和错误

代码语言：javascript
运行
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    W/Glide: Load failed for /document/msf:25 with size [384x384]
    class com.bumptech.glide.load.engine.GlideException: Failed to load resource
    There were 3 causes:
    java.io.IOException(File unsuitable for memory mapping)
    java.io.FileNotFoundException(/document/msf:25: open failed: ENOENT (No such file or directory))
    java.io.FileNotFoundException(open failed: ENOENT (No such file or directory))
     call GlideException#logRootCauses(String) for more detail
      Cause (1 of 3): class com.bumptech.glide.load.engine.GlideException: Fetching data failed, class java.nio.ByteBuffer, LOCAL
    There was 1 cause:
    java.io.IOException(File unsuitable for memory mapping)
     call GlideException#logRootCauses(String) for more detail
        Cause (1 of 1): class java.io.IOException: File unsuitable for memory mapping
      Cause (2 of 3): class com.bumptech.glide.load.engine.GlideException: Fetching data failed, class java.io.InputStream, LOCAL
    There was 1 cause:
    java.io.FileNotFoundException(/document/msf:25: open failed: ENOENT (No such file or directory))
     call GlideException#logRootCauses(String) for more detail
        Cause (1 of 1): class java.io.FileNotFoundException: /document/msf:25: open failed: ENOENT (No such file or directory)
      Cause (3 of 3): class com.bumptech.glide.load.engine.GlideException: Fetching data failed, class android.os.ParcelFileDescriptor, LOCAL
    There was 1 cause:
    java.io.FileNotFoundException(open failed: ENOENT (No such file or directory))
     call GlideException#logRootCauses(String) for more detail
        Cause (1 of 1): class java.io.FileNotFoundException: open failed: ENOENT (No such file or directory)
I/Glide: Root cause (1 of 3)
    java.io.IOException: File unsuitable for memory mapping
        at com.bumptech.glide.util.ByteBufferUtil.fromFile(ByteBufferUtil.java:38)
        at com.bumptech.glide.load.model.ByteBufferFileLoader$ByteBufferFetcher.loadData(ByteBufferFileLoader.java:61)
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70)
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63)
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310)
        at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:279)
        at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:234)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:919)
        at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:393)
I/Glide: Root cause (2 of 3)
    java.io.FileNotFoundException: /document/msf:25: open failed: ENOENT (No such file or directory)
        at libcore.io.IoBridge.open(IoBridge.java:496)
        at java.io.FileInputStream.<init>(FileInputStream.java:159)
        at com.bumptech.glide.load.model.FileLoader$StreamFactory$1.open(FileLoader.java:142)
        at com.bumptech.glide.load.model.FileLoader$StreamFactory$1.open(FileLoader.java:139)
        at com.bumptech.glide.load.model.FileLoader$FileFetcher.loadData(FileLoader.java:71)
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70)
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63)
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310)
        at com.bumptech.glide.load.engine.DecodeJob.onDataFetcherFailed(DecodeJob.java:408)
        at com.bumptech.glide.load.engine.SourceGenerator.onLoadFailedInternal(SourceGenerator.java:160)
        at com.bumptech.glide.load.engine.SourceGenerator$1.onLoadFailed(SourceGenerator.java:83)
        at com.bumptech.glide.load.model.ByteBufferFileLoader$ByteBufferFetcher.loadData(ByteBufferFileLoader.java:66)
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70)
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63)
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310)
        at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:279)
        at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:234)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:919)
        at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:393)
     Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
        at libcore.io.Linux.open(Native Method)
        at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
        at libcore.io.BlockGuardOs.open(BlockGuardOs.java:252)
        at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
        at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7255)
        at libcore.io.IoBridge.open(IoBridge.java:482)
        at java.io.FileInputStream.<init>(FileInputStream.java:159) 
        at com.bumptech.glide.load.model.FileLoader$StreamFactory$1.open(FileLoader.java:142) 
        at com.bumptech.glide.load.model.FileLoader$StreamFactory$1.open(FileLoader.java:139) 
        at com.bumptech.glide.load.model.FileLoader$FileFetcher.loadData(FileLoader.java:71) 
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70) 
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63) 
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310) 
        at com.bumptech.glide.load.engine.DecodeJob.onDataFetcherFailed(DecodeJob.java:408) 
        at com.bumptech.glide.load.engine.SourceGenerator.onLoadFailedInternal(SourceGenerator.java:160) 
        at com.bumptech.glide.load.engine.SourceGenerator$1.onLoadFailed(SourceGenerator.java:83) 
        at com.bumptech.glide.load.model.ByteBufferFileLoader$ByteBufferFetcher.loadData(ByteBufferFileLoader.java:66) 
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70) 
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63) 
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310) 
        at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:279) 
        at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:234) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 
        at java.lang.Thread.run(Thread.java:919) 
        at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:393) 
I/Glide: Root cause (3 of 3)
    java.io.FileNotFoundException: open failed: ENOENT (No such file or directory)
        at android.os.ParcelFileDescriptor.openInternal(ParcelFileDescriptor.java:315)
        at android.os.ParcelFileDescriptor.open(ParcelFileDescriptor.java:220)
        at com.bumptech.glide.load.model.FileLoader$FileDescriptorFactory$1.open(FileLoader.java:166)
        at com.bumptech.glide.load.model.FileLoader$FileDescriptorFactory$1.open(FileLoader.java:163)
        at com.bumptech.glide.load.model.FileLoader$FileFetcher.loadData(FileLoader.java:71)
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70)
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63)
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310)
        at com.bumptech.glide.load.engine.DecodeJob.onDataFetcherFailed(DecodeJob.java:408)
        at com.bumptech.glide.load.engine.SourceGenerator.onLoadFailedInternal(SourceGenerator.java:160)
        at com.bumptech.glide.load.engine.SourceGenerator$1.onLoadFailed(SourceGenerator.java:83)
        at com.bumptech.glide.load.model.FileLoader$FileFetcher.loadData(FileLoader.java:76)
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70)
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63)
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310)
        at com.bumptech.glide.load.engine.DecodeJob.onDataFetcherFailed(DecodeJob.java:408)
        at com.bumptech.glide.load.engine.SourceGenerator.onLoadFailedInternal(SourceGenerator.java:160)
        at com.bumptech.glide.load.engine.SourceGenerator$1.onLoadFailed(SourceGenerator.java:83)
        at com.bumptech.glide.load.model.ByteBufferFileLoader$ByteBufferFetcher.loadData(ByteBufferFileLoader.java:66)
        at com.bumptech.glide.load.engine.SourceGenerator.startNextLoad(SourceGenerator.java:70)
        at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:63)
        at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:310)
        at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:279)
        at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:234)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:919)
        at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:393)

我调试代码以查看图像的路径是否成功返回，它确实返回了。但是它没有显示在列表项中。我认为在加法过程发生的部分没有任何问题。

java
android
android-glide
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2020-04-29 01:18:23

您需要传递活动/片段的上下文，其中包含with()中的图像视图。

您可以通过在适配器构造函数中传递活动的上下文来实现这一点。例如，Adapter构造函数可能如下所示：

代码语言：javascript
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myAdapter(Context context, List<Object> dataset) {
            this.context = context;
            ...
            ...
               }

当您从适配器创建一个实例时，您可以像这样传递上下文：

代码语言：javascript
运行
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myAdapter adapter = new MyAdapter(this,...);

然后你可以像这样使用Glide的上下文：

代码语言：javascript
运行
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Glide.with(context)

我希望这对你有所帮助，如果你需要更多的澄清，请在评论中告诉我！

票数 3
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/61482200

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