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

转自 http://blog.csdn.net/u010046908/article/details/50767904

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：

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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

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@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

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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。

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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

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/**

* 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 + "]");

}

});

}

/**

*

* @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++) {

photos.put("photos"+i+"\"; filename=\"icon.png", 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

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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;

}

}

}

项目下载地址

效果展示