成品油价格走势,鹊桥汇,林忆莲歌曲
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
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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
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
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";
}
六、struts2接收文件
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);
}
}
项目下载地址：https://github.com/lidong1665/android-uploadmultipartimage
效果图：
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