Question

我正在尝试使用Glide将字符串值（使用Retrofit从服务器映射的路径）转换为位图。我使用相反的方法（将位图转换为字符串，然后将路径保存在服务器中，并且工作正常）。但是当我尝试以相反的方式执行时，它会显示有关Glide和适配器的一些日志，并且图像不会显示在活动中，只会显示图像的标题（文本）。所有相关代码如下。

ApiClient.java：

package com.example.retrofit;

import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class ApiClient {

    private static final String BASE_URL = "http://10.0.2.2/imageupload/";
    private static Retrofit retrofit;

    protected static Retrofit getApiClient() {
        if (retrofit == null) {
            retrofit = new Retrofit.Builder().baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create()).build();
        }

        return retrofit;
    }
}

ApiInterface.java：

package com.example.retrofit;

import java.util.List;
import retrofit2.Call;
import retrofit2.http.Field;
import retrofit2.http.FormUrlEncoded;
import retrofit2.http.GET;
import retrofit2.http.POST;
import retrofit2.http.Query;

public interface ApiInterface {

    @GET("getinfo.php")
    Call<List<Model>> getInfo(@Query("item_type") String item_type);

    @FormUrlEncoded
    @POST("upload.php")
    Call<Model> uploadImage(@Field("title") String title, @Field("image") String image);
}

Model.java：

package com.example.retrofit;

import com.google.gson.annotations.SerializedName;

public class Model {

    @SerializedName("title")
    private String Title;

    @SerializedName("path")
    private String path;

    @SerializedName("response")
    private String Response;

    public String getResponse() {
        return Response;
    }

    public String getTitle() {
        return Title;
    }

    public String getPath() {
        return path;
    }
}

MyAdapter.java：

package com.example.retrofit;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v7.widget.RecyclerView;
import android.util.Base64;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import java.io.ByteArrayOutputStream;
import java.util.List;

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {

    private Context context;
    private List<Model> models;

    public MyAdapter(Context context, List<Model> models)
    {
        this.context = context;
        this.models = models;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_items, parent, false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {

        holder.Name.setText(models.get(position).getTitle());
        // Here, trying to get the path as a string to convert it to a bitmap.
        //String image = Glide.with(context).load(models.get(position).getPath()).into(holder.Img_Path).toString();
        String image1 = String.valueOf(Glide.with(context).load(models.get(position).getPath()).into(holder.Img_Path));
        stringToBitmap(image1);
    }

    // Convert the string to a bitmap.
    private Bitmap stringToBitmap(String image) {
        try {
        byte[] encodeByte = Base64.decode(image, Base64.DEFAULT);
        Bitmap bitmap = BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length);
        return bitmap;
        } catch(Exception e) {
            e.getMessage();
            return null;
        }
    }

    @Override
    public int getItemCount() {
        if(models != null)
            return models.size();

        return 0;
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder
    {
        private TextView Name;
        private ImageView Img_Path;

        public MyViewHolder(View itemView) {
            super(itemView);

            Name = (TextView) itemView.findViewById(R.id.textView);
            Img_Path = (ImageView) itemView.findViewById(R.id.imgView);
        }
    }
}

ListActivity.java：

package com.example.retrofit;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class ListActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    private RecyclerView.LayoutManager layoutManager;
    private List<Model> models;
    private MyAdapter adapter;
    private ApiInterface apiInterface;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list);

        recyclerView = (RecyclerView) findViewById(R.id.rv);
        layoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setHasFixedSize(true);

        if(getIntent().getExtras() != null)
        {
            String type = getIntent().getExtras().getString("type");
            getInfo(type);

        }
    }

    private void getInfo(String type)
    {
        apiInterface = ApiClient.getApiClient().create(ApiInterface.class);
        Call<List<Model>> call = apiInterface.getInfo(type);

        call.enqueue(new Callback<List<Model>>() {
            @Override
            public void onResponse(Call<List<Model>> call, Response<List<Model>> response) {

                models = response.body();
                adapter = new MyAdapter(ListActivity.this, models);
                recyclerView.setAdapter(adapter);
            }

            @Override
            public void onFailure(Call<List<Model>> call, Throwable t) {

            }
        });
    }
}

MainActivity.java：

...
...
...
@Override
    public void onClick(View v) {
        switch (v.getId()) {
            ...
            ...
            ...

            case R.id.secondActivityBtn:
                Intent intent1 = new Intent(this, ListActivity.class);
                intent1.putExtra("type", "m");
                startActivity(intent1);
                break;
        }
    }

getinfo.php（服务器端）：

<?php

require "init.php";

$type = $_GET['item_type'];

if($type == 'm')
{
    $sql = "select * from imageinfo";
    $response = array();
    $result = mysqli_query($con, $sql);

    while($row = mysqli_fetch_array($result))
    {
        array_push($response, array('title'=>$row['title'], 'path'=>$row['path']));
    }

    echo json_encode($response);
}

mysqli_close($con);

?>

LOG：

07-07 23:10:05.817 11051-11051/com.example.retrofit D/NetworkSecurityConfig: No Network Security Config specified, using platform default
07-07 23:10:06.039 11051-11051/com.example.retrofit E/RecyclerView: No adapter attached; skipping layout
07-07 23:10:06.103 11051-11051/com.example.retrofit W/Glide: Failed to find GeneratedAppGlideModule. You should include an annotationProcessor compile dependency on com.github.bumptech.glide:glide:compiler in your application and a @GlideModule annotated AppGlideModule implementation or LibraryGlideModules will be silently ignored
07-07 23:10:06.255 11051-11080/com.example.retrofit D/EGL_emulation: eglMakeCurrent: 0xaa205120: ver 2 0 (tinfo 0xaa203730)
07-07 23:10:06.347 11051-11080/com.example.retrofit D/EGL_emulation: eglMakeCurrent: 0xaa205120: ver 2 0 (tinfo 0xaa203730)
07-07 23:10:06.439 11051-11080/com.example.retrofit D/EGL_emulation: eglMakeCurrent: 0xaa205120: ver 2 0 (tinfo 0xaa203730)
07-07 23:10:06.466 11051-11051/com.example.retrofit W/Glide: Load failed for uploads/Android.jpg with size [1440x420]
                                                             class com.bumptech.glide.load.engine.GlideException: Failed to load resource
                                                               Cause (1 of 1): class com.bumptech.glide.load.engine.GlideException: Fetching data failed, class java.io.InputStream, LOCAL
                                                                 Cause (1 of 1): class com.bumptech.glide.load.engine.GlideException: Fetch failed
                                                                   Cause (1 of 1): class java.io.FileNotFoundException: /uploads/Android.jpg (No such file or directory)
07-07 23:10:06.466 11051-11051/com.example.retrofit E/Glide: class com.bumptech.glide.load.engine.GlideException: Failed to load resource
07-07 23:10:06.466 11051-11051/com.example.retrofit I/Glide: Root cause (1 of 1)
                                                             java.io.FileNotFoundException: /uploads/Android.jpg (No such file or directory)
                                                                 at java.io.FileInputStream.open(Native Method)
                                                                 at java.io.FileInputStream.<init>(FileInputStream.java:146)
                                                                 at java.io.FileInputStream.<init>(FileInputStream.java:99)
                                                                 at android.content.ContentResolver.openInputStream(ContentResolver.java:702)
                                                                 at com.bumptech.glide.load.data.StreamLocalUriFetcher.loadResourceFromUri(StreamLocalUriFetcher.java:79)
                                                                 at com.bumptech.glide.load.data.StreamLocalUriFetcher.loadResource(StreamLocalUriFetcher.java:55)
                                                                 at com.bumptech.glide.load.data.StreamLocalUriFetcher.loadResource(StreamLocalUriFetcher.java:16)
                                                                 at com.bumptech.glide.load.data.LocalUriFetcher.loadData(LocalUriFetcher.java:40)
                                                                 at com.bumptech.glide.load.model.MultiModelLoader$MultiFetcher.loadData(MultiModelLoader.java:95)
                                                                 at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:61)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:282)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:252)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:222)
                                                                 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                 at java.lang.Thread.run(Thread.java:761)
                                                                 at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:347)
07-07 23:10:06.467 11051-11051/com.example.retrofit W/Glide: Load failed for uploads/Test.jpg with size [1440x420]
                                                             class com.bumptech.glide.load.engine.GlideException: Failed to load resource
                                                               Cause (1 of 2): class com.bumptech.glide.load.engine.GlideException: Fetching data failed, class java.io.InputStream, LOCAL
                                                                 Cause (1 of 1): class com.bumptech.glide.load.engine.GlideException: Fetch failed
                                                                   Cause (1 of 1): class java.io.FileNotFoundException: /uploads/Test.jpg (No such file or directory)
                                                               Cause (2 of 2): class com.bumptech.glide.load.engine.GlideException: Fetching data failed, class android.os.ParcelFileDescriptor, LOCAL
                                                                 Cause (1 of 1): class com.bumptech.glide.load.engine.GlideException: Fetch failed
                                                                   Cause (1 of 1): class java.io.FileNotFoundException: No such file or directory
07-07 23:10:06.468 11051-11051/com.example.retrofit E/Glide: class com.bumptech.glide.load.engine.GlideException: Failed to load resource
07-07 23:10:06.470 11051-11051/com.example.retrofit I/Glide: Root cause (1 of 2)
                                                             java.io.FileNotFoundException: /uploads/Test.jpg (No such file or directory)
                                                                 at java.io.FileInputStream.open(Native Method)
                                                                 at java.io.FileInputStream.<init>(FileInputStream.java:146)
                                                                 at java.io.FileInputStream.<init>(FileInputStream.java:99)
                                                                 at android.content.ContentResolver.openInputStream(ContentResolver.java:702)
                                                                 at com.bumptech.glide.load.data.StreamLocalUriFetcher.loadResourceFromUri(StreamLocalUriFetcher.java:79)
                                                                 at com.bumptech.glide.load.data.StreamLocalUriFetcher.loadResource(StreamLocalUriFetcher.java:55)
                                                                 at com.bumptech.glide.load.data.StreamLocalUriFetcher.loadResource(StreamLocalUriFetcher.java:16)
                                                                 at com.bumptech.glide.load.data.LocalUriFetcher.loadData(LocalUriFetcher.java:40)
                                                                 at com.bumptech.glide.load.model.MultiModelLoader$MultiFetcher.loadData(MultiModelLoader.java:95)
                                                                 at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:61)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:282)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:252)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:222)
                                                                 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                 at java.lang.Thread.run(Thread.java:761)
                                                                 at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:347)
07-07 23:10:06.471 11051-11051/com.example.retrofit I/Glide: Root cause (2 of 2)
                                                             java.io.FileNotFoundException: No such file or directory
                                                                 at android.os.Parcel.openFileDescriptor(Native Method)
                                                                 at android.os.ParcelFileDescriptor.openInternal(ParcelFileDescriptor.java:283)
                                                                 at android.os.ParcelFileDescriptor.open(ParcelFileDescriptor.java:200)
                                                                 at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:979)
                                                                 at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:907)
                                                                 at com.bumptech.glide.load.data.FileDescriptorLocalUriFetcher.loadResource(FileDescriptorLocalUriFetcher.java:21)
                                                                 at com.bumptech.glide.load.data.FileDescriptorLocalUriFetcher.loadResource(FileDescriptorLocalUriFetcher.java:13)
                                                                 at com.bumptech.glide.load.data.LocalUriFetcher.loadData(LocalUriFetcher.java:40)
                                                                 at com.bumptech.glide.load.model.MultiModelLoader$MultiFetcher.loadData(MultiModelLoader.java:95)
                                                                 at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:61)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:282)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.onDataFetcherFailed(DecodeJob.java:377)
                                                                 at com.bumptech.glide.load.engine.SourceGenerator.onLoadFailed(SourceGenerator.java:118)
                                                                 at com.bumptech.glide.load.model.MultiModelLoader$MultiFetcher.startNextOrFail(MultiModelLoader.java:146)
                                                                 at com.bumptech.glide.load.model.MultiModelLoader$MultiFetcher.onLoadFailed(MultiModelLoader.java:138)
                                                                 at com.bumptech.glide.load.data.LocalUriFetcher.loadData(LocalUriFetcher.java:45)
                                                                 at com.bumptech.glide.load.model.MultiModelLoader$MultiFetcher.loadData(MultiModelLoader.java:95)
                                                                 at com.bumptech.glide.load.engine.SourceGenerator.startNext(SourceGenerator.java:61)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runGenerators(DecodeJob.java:282)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.runWrapped(DecodeJob.java:252)
                                                                 at com.bumptech.glide.load.engine.DecodeJob.run(DecodeJob.java:222)
                                                                 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                 at java.lang.Thread.run(Thread.java:761)
                                                                 at com.bumptech.glide.load.engine.executor.GlideExecutor$DefaultThreadFactory$1.run(GlideExecutor.java:347)

可能有帮助的一些代码和提示......

将位图转换为字符串值（对我来说很好）：

// Convert the "bitmap" to a string value.
    private String imgToString() {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

        // Compress or change the extension of the image (bitmap) to jpeg and save it to
        // byteArrayOutputStream.
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
        byte[] imgBytes = byteArrayOutputStream.toByteArray();
        return Base64.encodeToString(imgBytes, Base64.DEFAULT);
    }

数据库截图（imageinfo表格）：

Answer 1

要获取您不必使用GLIDE的字符串（您的编码图像），滑动是为了从远程服务器或本地设备URI加载图像，您只需要调用以获取字符串格式的图像，另存为作为一个字符串传递给您的方法为您解码它并给你图像。而已。希望它清楚。

使用Glide

1 个答案: