Android实现图片选择上传功能实例

概述效果图：添加依赖：选择图片：compile\'com.lzy.widget:imagepicker:0.5.4\'github地址：https://github.com/jeasonlzy/ImagePicker

效果图：

添加依赖：

选择图片：compile 'com.lzy.Widget:imagepicker:0.5.4'

github地址：https://github.com/jeasonlzy/ImagePicker

上传文件：compile 'com.zhy:okhttputils:2.6.2'

github地址：https://github.com/hongyangAndroid/okhttputils

MainActivity.java

package com.yechaoa.uploadimage; import androID.content.Intent; import androID.support.v7.app.AppCompatActivity; import androID.os.Bundle; import androID.support.v7.Widget.GrIDLayoutManager; import androID.support.v7.Widget.RecyclerVIEw; import androID.vIEw.VIEw; import androID.Widget.AdapterVIEw; import com.lzy.imagepicker.ImagePicker; import com.lzy.imagepicker.bean.ImageItem; import com.lzy.imagepicker.ui.ImageGrIDActivity; import com.lzy.imagepicker.ui.ImagePrevIEwDelActivity; import com.lzy.imagepicker.vIEw.CropImageVIEw; import java.util.ArrayList; import java.util.List; import okhttp3.Call; public class MainActivity extends AppCompatActivity implements ImagePickerAdapter.OnRecyclerVIEwItemClickListener{   public static final int IMAGE_ITEM_ADD = -1;   public static final int REQUEST_CODE_SELECT = 100;   public static final int REQUEST_CODE_PREVIEW = 101;   private ImagePickerAdapter adapter;   private ArrayList<ImageItem> selimageList; //当前选择的所有图片   private int maximgCount = 8;        //允许选择图片最大数   private httpUtil httpUtil;   @OverrIDe   protected voID onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentVIEw(R.layout.activity_main);     httpUtil = new httpUtil();     findVIEwByID(R.ID.btn).setonClickListener(new VIEw.OnClickListener() {       @OverrIDe       public voID onClick(VIEw v) {         uploadImage(selimageList);       }     });     //最好放到 Application oncreate执行     initimagePicker();     initWidget();   }   private voID initimagePicker() {     ImagePicker imagePicker = ImagePicker.getInstance();     imagePicker.setimageLoader(new GlIDeImageLoader());  //设置图片加载器     imagePicker.setShowCamera(true);           //显示拍照按钮     imagePicker.setCrop(true);              //允许裁剪（单选才有效）     imagePicker.setSaveRectangle(true);          //是否按矩形区域保存     imagePicker.setSelectlimit(maximgCount);       //选中数量限制     imagePicker.setMultiMode(false);           //多选     imagePicker.setStyle(CropImageVIEw.Style.RECTANGLE); //裁剪框的形状     imagePicker.setFocusWIDth(800);            //裁剪框的宽度。单位像素（圆形自动取宽高最小值）     imagePicker.setFocusHeight(800);           //裁剪框的高度。单位像素（圆形自动取宽高最小值）     imagePicker.setoutPutX(1000);             //保存文件的宽度。单位像素     imagePicker.setoutPutY(1000);             //保存文件的高度。单位像素   }   private voID initWidget() {     RecyclerVIEw recyclerVIEw = (RecyclerVIEw) findVIEwByID(R.ID.recyclerVIEw);     selimageList = new ArrayList<>();     adapter = new ImagePickerAdapter(this,selimageList,maximgCount);     adapter.setonItemClickListener(this);      recyclerVIEw.setLayoutManager(new GrIDLayoutManager(this,4));     recyclerVIEw.setHasFixedSize(true);     recyclerVIEw.setAdapter(adapter);   }    private SelectDialog showDialog(SelectDialog.SelectDialogListener Listener,List<String> names) {     SelectDialog dialog = new SelectDialog(this,R.style.transparentFramewindowstyle,Listener,names);     if (!this.isFinishing()) {       dialog.show();     }     return dialog;   }  @OverrIDe   public voID onItemClick(VIEw vIEw,int position) {     switch (position) {       case IMAGE_ITEM_ADD:         List<String> names = new ArrayList<>();         names.add("拍照");         names.add("相册");         showDialog(new SelectDialog.SelectDialogListener() {           @OverrIDe           public voID onItemClick(AdapterVIEw<?> parent,VIEw vIEw,int position,long ID) {             switch (position) {               case 0: // 直接调起相机                 //打开选择,本次允许选择的数量                 ImagePicker.getInstance().setSelectlimit(maximgCount - selimageList.size());                 Intent intent = new Intent(MainActivity.this,ImageGrIDActivity.class);                 intent.putExtra(ImageGrIDActivity.EXTRAS_TAKE_PICKERS,true); // 是否是直接打开相机                 startActivityForResult(intent,REQUEST_CODE_SELECT);                 break;               case 1:                 //打开选择,本次允许选择的数量                 ImagePicker.getInstance().setSelectlimit(maximgCount - selimageList.size());                 Intent intent1 = new Intent(MainActivity.this,ImageGrIDActivity.class);                 startActivityForResult(intent1,REQUEST_CODE_SELECT);                 break;               default:                 break;             }           }         },names);         break;       default:         //打开预览         Intent intentPrevIEw = new Intent(this,ImagePrevIEwDelActivity.class);         intentPrevIEw.putExtra(ImagePicker.EXTRA_IMAGE_ITEMS,(ArrayList<ImageItem>) adapter.getimages());         intentPrevIEw.putExtra(ImagePicker.EXTRA_SELECTED_IMAGE_position,position);         intentPrevIEw.putExtra(ImagePicker.EXTRA_FROM_ITEMS,true);         startActivityForResult(intentPrevIEw,REQUEST_CODE_PREVIEW);         break;     }   }   @OverrIDe   protected voID onActivityResult(int requestCode,int resultCode,Intent data) {     super.onActivityResult(requestCode,resultCode,data);     if (resultCode == ImagePicker.RESulT_CODE_ITEMS) {       //添加图片返回       if (data != null && requestCode == REQUEST_CODE_SELECT) {         ArrayList<ImageItem> images = (ArrayList<ImageItem>) data.getSerializableExtra(ImagePicker.EXTRA_RESulT_ITEMS);         if (images != null){           selimageList.addAll(images);           adapter.setimages(selimageList);         }       }     } else if (resultCode == ImagePicker.RESulT_CODE_BACK) {       //预览图片返回       if (data != null && requestCode == REQUEST_CODE_PREVIEW) {         ArrayList<ImageItem> images = (ArrayList<ImageItem>) data.getSerializableExtra(ImagePicker.EXTRA_IMAGE_ITEMS);         if (images != null){           selimageList.clear();           selimageList.addAll(images);           adapter.setimages(selimageList);         }       }     }   }   private String url="http...";    private voID uploadImage(ArrayList<ImageItem> pathList) {     httpUtil.postfileRequest(url,null,pathList,new MyStringCallBack() {        @OverrIDe       public voID onError(Call call,Exception e,int ID) {         super.onError(call,e,ID);       }      @OverrIDe       public voID onResponse(String response,int ID) {         super.onResponse(response,ID);         //返回图片的地址       }     });   }}

Demo地址：https://github.com/yechaoa/UploadImage

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