Android使用Retrofit2.0技術(shù)仿微信發(fā)說說
更新時(shí)間：2017年01月13日 15:48:02 作者：請(qǐng)叫我小東子
這篇文章主要為大家詳細(xì)介紹了Android使用Retrofit2.0技術(shù)仿微信發(fā)說說，實(shí)現(xiàn)拍照，選圖庫，多圖案上傳功能，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下
最近項(xiàng)目做完了，有閑暇時(shí)間，一直想做一個(gè)類似微信中微信發(fā)說說，既能實(shí)現(xiàn)拍照，選圖庫，多圖案上傳的案例，目前好多App都有類似微信朋友圈的功能，能過發(fā)表說說等附帶圖片上傳。下面的就是實(shí)現(xiàn)該功能的過程：大家還沒有看過Android Retrofit 2.0框架上傳圖片解決方案（一張與多張的處理）這篇文章，在看今天的就很容易，接在本項(xiàng)目中用到了一個(gè)library：photopicker，封裝了圖片的選擇功能，是否選相機(jī)，還有選中圖片后可以查看圖片的功能。
一、 首先：將photopicker到工程中
（1）、先簡(jiǎn)單講解一下PhotoPickerIntent的用法：
PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this); intent.setSelectModel(SelectModel.MULTI); // intent.setShowCarema(true); // 是否顯示拍照 intent.setMaxTotal(6); // 最多選擇照片數(shù)量，默認(rèn)為6 intent.setSelectedPaths(imagePaths); // 已選中的照片地址， 用于回顯選中狀態(tài) startActivityForResult(intent, REQUEST_CAMERA_CODE);
（2）、設(shè)置好之后，重寫onActivityResult方法處理選中圖片和預(yù)覽加載適配器
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_OK) {
switch (requestCode) {
// 選擇照片
case REQUEST_CAMERA_CODE:
loadAdpater(data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT));
break;
// 預(yù)覽
case REQUEST_PREVIEW_CODE:
loadAdpater(data.getStringArrayListExtra(PhotoPreviewActivity.EXTRA_RESULT));
break;
}
}
}
二、重點(diǎn)在GridAdapter
1.在圖片路徑中默認(rèn)添加一圖片，用來調(diào)用需選擇圖庫
imagePaths.add("000000");
2.根據(jù)路徑判斷選中的圖片。如果超過6張，默認(rèn)路徑從集合中移除。
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、上傳管理類
/**
* 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 {
/**
* 上傳一張圖片
* @param description
* @param imgs
* @return
*/
@Multipart
@POST("/upload")
Call<String> uploadImage(@Part("fileName") String description,
@Part("file\"; filename=\"image.png\"") RequestBody imgs);
/**
* 上傳6張圖片
* @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);
/**
* 簡(jiǎn)便寫法
* @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);
/**
* 發(fā)說說
* @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、項(xiàng)目代碼
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; // 相機(jī)拍照處理類
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); // 是否顯示拍照
intent.setMaxTotal(6); // 最多選擇照片數(shù)量，默認(rèn)為6
intent.setSelectedPaths(imagePaths); // 已選中的照片地址， 用于回顯選中狀態(tài)
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) {
// 選擇照片
case REQUEST_CAMERA_CODE:
ArrayList<String> list = data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT);
Log.d(TAG, "list: " + "list = [" + list.size());
loadAdpater(list);
break;
// 預(yù)覽
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
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 {
//拿到輸出流，同時(shí)重命名上傳的文件
FileOutputStream os = new FileOutputStream("f:/img"+"/" + new Date().getTime()+".jpg");
//拿到上傳文件的輸入流
FileInputStream in = (FileInputStream) files[i].getInputStream();
//以寫字節(jié)的方式寫文件
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("上傳出錯(cuò)");
}
}
}
return "/success";
}
六、Struts2接收文件
public class UploadFile extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 1L;
private File[] file;//文件數(shù)組
private String description;//說說內(nèi)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("上傳的文件="+Arrays.toString(file));
System.out.println("說說內(nèi)容="+description);
}
}
項(xiàng)目下載地址：https://github.com/lidong1665/Android-UploadMultipartImage
效果圖：
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。
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