最近项目做完了，有闲暇时间，一直想做一个类似微信中微信发说说，既能实现拍照，选图库，多图案上传的案例，目前好多App都有类似微信朋友圈的功能，能过发表说说等附带图片上传。下面的就是实现该功能的过程：大家还没有看过Android Retrofit 2.0框架上传图片解决方案（一张与多张的处理）这篇文章，在看今天的就很容易，接在本项目中用到了一个library：photopicker，封装了图片的选择功能，是否选相机，还有选中图片后可以查看图片的功能。

一、首先：将photopicker到工程中
（1）、先简单讲解一下PhotoPickerIntent的用法：

PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this); 
             intent.setSelectModel(SelectModel.MULTI); //
             intent.setShowCarema(true); // 是否显示拍照 
             intent.setMaxTotal(6); // 最多选择照片数量，默认为6 
             intent.setSelectedPaths(imagePaths); // 已选中的照片地址， 用于回显选中状态 
             startActivityForResult(intent, REQUEST_CAMERA_CODE);

（2）、设置好之后，重写onActivityResult方法处理选中图片和预览加载适配器

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode == RESULT_OK) {
            switch (requestCode) {
                // 选择照片
                case REQUEST_CAMERA_CODE:
                    loadAdpater(data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT));
                    break;
                // 预览
                case REQUEST_PREVIEW_CODE:
                    loadAdpater(data.getStringArrayListExtra(PhotoPreviewActivity.EXTRA_RESULT));
                    break;
            }
        }
    }

二、重点在GridAdapter

1.在图片路径中默认添加一图片，用来调用需选择图库

  imagePaths.add("000000");

2.根据路径判断选中的图片。如果超过6张，默认路径从集合中移除。

 private class GridAdapter extends BaseAdapter{
        private ArrayList<String> listUrls;
        private LayoutInflater inflater;
        public GridAdapter(ArrayList<String> listUrls) {
            this.listUrls = listUrls;
            if(listUrls.size() == 7){
                listUrls.remove(listUrls.size()-1);
            }
            inflater = LayoutInflater.from(MainActivity.this);
        }

        public int getCount(){
            return  listUrls.size();
        }
        @Override
        public String getItem(int position) {
            return listUrls.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = inflater.inflate(R.layout.item_image, parent,false);
                holder.image = (ImageView) convertView.findViewById(R.id.imageView);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder)convertView.getTag();
            }

            final String path=listUrls.get(position);
            if (path.equals("000000")){
                holder.image.setImageResource(R.mipmap.ic_launcher);
            }else {
                Glide.with(MainActivity.this)
                        .load(path)
                        .placeholder(R.mipmap.default_error)
                        .error(R.mipmap.default_error)
                        .centerCrop()
                        .crossFade()
                        .into(holder.image);
            }
            return convertView;
        }
          class ViewHolder {
             ImageView image;
        }
    }
}

三、上传管理类

/**
 * Created by lidong on 2016/1/28.
 */
public class FileUploadManager {

    private static final String ENDPOINT = "http://192.168.1.21:8080";
    private static String TAG = FileUploadManager.class.getSimpleName();

    public interface FileUploadService {
        /**
         * 上传一张图片
         * @param description
         * @param imgs
         * @return
         */
        @Multipart
        @POST("/upload")
        Call<String> uploadImage(@Part("fileName") String description,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs);


        /**
         * 上传6张图片
          * @param description
         * @param imgs1
         * @param imgs2
         * @param imgs3
         * @param imgs4
         * @param imgs5
         * @param imgs6
         * @return
         */
        @Multipart
        @POST("/upload")
        Call<String> uploadImage(@Part("description") String description,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs1,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs2,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs3,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs4,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs5,
                                 @Part("file\"; filename=\"image.png\"") RequestBody imgs6);

        /**
         * 简便写法
         * @param description
         * @param imgs1
         * @return
         */
        @Multipart
        @POST("/upload")
        Call<String> uploadImage(@Part("description") String description,@PartMap
                                 Map<String, RequestBody> imgs1);
    }

    private static final Retrofit sRetrofit = new Retrofit .Builder()
            .baseUrl(ENDPOINT)
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    private static final FileUploadService apiManager = sRetrofit.create(FileUploadService.class);


    /**
     * 发说说
     * @param paths
     * @param desp
     */
    public static void upload(ArrayList<String> paths,String desp){
        RequestBody[] requestBody= new RequestBody[6];
        if (paths.size()>0) {
            for (int i=0;i<paths.size();i++) {
                requestBody[i] =
                        RequestBody.create(MediaType.parse("multipart/form-data"), new File(paths.get(i)));
            }
        }
        Call<String> call = apiManager.uploadImage( desp,requestBody[0],requestBody[1],requestBody[2],requestBody[3],requestBody[4],requestBody

[5]);
        call.enqueue(new Callback<String>() {
            @Override
            public void onResponse(Call<String> call, Response<String> response) {
                Log.d(TAG, "onResponse() called with: " + "call = [" + call + "], response = [" + response + "]");
            }

            @Override
            public void onFailure(Call<String> call, Throwable t) {
                Log.d(TAG, "onFailure() called with: " + "call = [" + call + "], t = [" + t + "]");
            }
        });

    }<pre name="code" class="java"> /**
     *
     * @param paths
     * @param desp
     */
    public static void uploadMany(ArrayList<String> paths,String desp){
        Map<String,RequestBody> photos = new HashMap<>();
        if (paths.size()>0) {
            for (int i=0;i<paths.size();i++) {
                String substring = paths.get(i).substring(paths.get(i).lastIndexOf("/") + 1, paths.get(i).length());
                photos.put("file\"; filename="+substring,  RequestBody.create(MediaType.parse("multipart/form-data"), new File(paths.get(i))));
            }
        }
        Call<String> stringCall = apiManager.uploadImage(desp, photos);
        stringCall.enqueue(new Callback<String>() {
            @Override
            public void onResponse(Call<String> call, Response<String> response) {
                Log.d(TAG, "onResponse() called with: " + "call = [" + call + "], response = [" + response + "]");
            }

            @Override
            public void onFailure(Call<String> call, Throwable t) {
                Log.d(TAG, "onFailure() called with: " + "call = [" + call + "], t = [" + t + "]");
            }
        });
    }

四、项目代码

package com.lidong.photopickersample;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageView;

import com.bumptech.glide.Glide;
import com.lidong.photopicker.ImageCaptureManager;
import com.lidong.photopicker.PhotoPickerActivity;
import com.lidong.photopicker.PhotoPreviewActivity;
import com.lidong.photopicker.SelectModel;
import com.lidong.photopicker.intent.PhotoPickerIntent;
import com.lidong.photopicker.intent.PhotoPreviewIntent;

import org.json.JSONArray;

import java.util.ArrayList;

/**
 * @
 * @author lidong
 * @date 2016-02-29
 */
public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CAMERA_CODE = 10;
    private static final int REQUEST_PREVIEW_CODE = 20;
    private ArrayList<String> imagePaths = new ArrayList<>();
    private ImageCaptureManager captureManager; // 相机拍照处理类

    private GridView gridView;
    private GridAdapter gridAdapter;
    private Button mButton;
    private String depp;
    private EditText textView;
    private String TAG =MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gridView = (GridView) findViewById(R.id.gridView);
        mButton = (Button) findViewById(R.id.button);
        textView= (EditText)findViewById(R.id.et_context);

        int cols = getResources().getDisplayMetrics().widthPixels / getResources().getDisplayMetrics().densityDpi;
        cols = cols < 3 ? 3 : cols;
        gridView.setNumColumns(cols);

        // preview
        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String imgs = (String) parent.getItemAtPosition(position);
                if ("000000".equals(imgs) ){
                    PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this);
                    intent.setSelectModel(SelectModel.MULTI);
                    intent.setShowCarema(true); // 是否显示拍照
                    intent.setMaxTotal(6); // 最多选择照片数量，默认为6
                    intent.setSelectedPaths(imagePaths); // 已选中的照片地址， 用于回显选中状态
                    startActivityForResult(intent, REQUEST_CAMERA_CODE);
                }else{
                        PhotoPreviewIntent intent = new PhotoPreviewIntent(MainActivity.this);
                        intent.setCurrentItem(position);
                        intent.setPhotoPaths(imagePaths);
                        startActivityForResult(intent, REQUEST_PREVIEW_CODE);
                }
            }
        });
        imagePaths.add("000000");
        gridAdapter = new GridAdapter(imagePaths);
        gridView.setAdapter(gridAdapter);
        mButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                depp =textView.getText().toString().trim()!=null?textView.getText().toString().trim():"woowoeo";
                new Thread(){
                    @Override
                    public void run() {
                        super.run();
                        FileUploadManager.uploadMany(imagePaths, depp);
//                        FileUploadManager.upload(imagePaths,depp);
                    }
                }.start();
            }
        });
    }


    @Override
    protected void onResume() {
        super.onResume();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode == RESULT_OK) {
            switch (requestCode) {
                // 选择照片
                case REQUEST_CAMERA_CODE:
                    ArrayList<String> list = data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT);
                    Log.d(TAG, "list: " + "list = [" + list.size());
                    loadAdpater(list);
                    break;
                // 预览
                case REQUEST_PREVIEW_CODE:
                    ArrayList<String> ListExtra = data.getStringArrayListExtra(PhotoPreviewActivity.EXTRA_RESULT);
                    Log.d(TAG, "ListExtra: " + "ListExtra = [" + ListExtra.size());
                    loadAdpater(ListExtra);
                    break;
            }
        }
    }

    private void loadAdpater(ArrayList<String> paths){
        if (imagePaths!=null&& imagePaths.size()>0){
            imagePaths.clear();
        }
        if (paths.contains("000000")){
            paths.remove("000000");
        }
        paths.add("000000");
        imagePaths.addAll(paths);
        gridAdapter  = new GridAdapter(imagePaths);
        gridView.setAdapter(gridAdapter);
        try{
            JSONArray obj = new JSONArray(imagePaths);
            Log.e("--", obj.toString());
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    private class GridAdapter extends BaseAdapter{
        private ArrayList<String> listUrls;
        private LayoutInflater inflater;
        public GridAdapter(ArrayList<String> listUrls) {
            this.listUrls = listUrls;
            if(listUrls.size() == 7){
                listUrls.remove(listUrls.size()-1);
            }
            inflater = LayoutInflater.from(MainActivity.this);
        }

        public int getCount(){
            return  listUrls.size();
        }
        @Override
        public String getItem(int position) {
            return listUrls.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = inflater.inflate(R.layout.item_image, parent,false);
                holder.image = (ImageView) convertView.findViewById(R.id.imageView);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder)convertView.getTag();
            }

            final String path=listUrls.get(position);
            if (path.equals("000000")){
                holder.image.setImageResource(R.mipmap.ic_launcher);
            }else {
                Glide.with(MainActivity.this)
                        .load(path)
                        .placeholder(R.mipmap.default_error)
                        .error(R.mipmap.default_error)
                        .centerCrop()
                        .crossFade()
                        .into(holder.image);
            }
            return convertView;
        }
          class ViewHolder {
             ImageView image;
        }
    }
}

五、SpringMVC接收文件的action

<span style="font-size:18px;">@RequestMapping("/upload"   )  
    public String addUser(@RequestParam("file") CommonsMultipartFile[] files,
    		HttpServletRequest request){  
          
        for(int i = 0;i<files.length;i++){  
            System.out.println("fileName---------->" + files[i].getOriginalFilename());  
          
            if(!files[i].isEmpty()){  
                int pre = (int) System.currentTimeMillis();  
                try {  
                    //拿到输出流，同时重命名上传的文件  
                    FileOutputStream os = new FileOutputStream("f:/img"+"/" + new Date().getTime()+".jpg");  
                    //拿到上传文件的输入流  
                    FileInputStream in = (FileInputStream) files[i].getInputStream();  
                      
                    //以写字节的方式写文件  
                    int b = 0;  
                    while((b=in.read()) != -1){  
                        os.write(b);  
                    }  
                    os.flush();  
                    os.close();  
                    in.close();  
                    int finaltime = (int) System.currentTimeMillis();  
                    System.out.println(finaltime - pre);  
                      
                } catch (Exception e) {  
                    e.printStackTrace();  
                    System.out.println("上传出错");  
                }  
        }  
        }  
        return "/success";  
    }  </span>

六、Struts2接收文件

<span style="font-size:18px;color:#ff6666;">@Controller 
public class UploadFile extends ActionSupport {

 /**
 * 
 */
private static final long serialVersionUID = 1L;

private File[] file;//文件数组
private String description;//说说内容
public File[] getFile() {
    return file;
}
public void setFile(File[] file) {
    this.file = file;
}


public String getDescription() {
    return description;
}
public void setDescription(String description) {
    this.description = description;
}
@Action("/upload")
public void upload()  {
    System.out.println("上传的文件="+Arrays.toString(file));
    System.out.println("说说内容="+description);
}
}</span>

项目下载地址

效果展示

如果在看的过程中，有问题可以QQ联系，1561281670

Android 仿照微信发说说，既能实现拍照，选图库，多图案上传使用Retrofit2.0技术

三、上传管理类

四、项目代码

效果展示

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Android 仿照微信发说说，既能实现拍照，选图库，多图案上传 使用Retrofit2.0技术

三、上传管理类

四、项目代码

效果展示

热门文章

最新文章

相关课程

相关电子书

相关实验场景

Android 仿照微信发说说，既能实现拍照，选图库，多图案上传使用Retrofit2.0技术