最近做了选择多图并且上传服务器，在网上找了一些demo，适当的做了一下调整，用过了不能忘记，记下来以后还能多看看，本人觉得自己的博客有些渣渣，还希望大家不要介意啊，哪里有错误希望大家及时指正。

好了下面具体的分析一下：（想要做出功能，需求分析是必不可少的，需求、逻辑弄懂了再上手写代码，思路会很清晰的）

1.多图上传首先得选择图片（这里项目需求是既可以拍照上传也可以从相册中选择）

2.拍照上传很简单了网上也有很多例子，调用照相机，返回uri，获取图片

3.从相册中选择图片

3.1 获取手机中的所有图片

3.2 将图片存到自定义图片数组中显示

3.3 自定义ViewPager浏览图片

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主要的逻辑大体是这样，下面具体看一下实现：

一、首先看一下界面：

<com.view.NoScrollGridViewandroid:id="@+id/noScrollgridview"android:layout_marginLeft="@dimen/smaller_space"android:layout_marginRight="@dimen/smaller_space"android:layout_width="match_parent"android:layout_height="wrap_content"android:horizontalSpacing="3dp"android:listSelector="@color/transparent"android:numColumns="3"android:scrollbars="none"android:layout_gravity="center"android:layout_marginTop="@dimen/smaller_space"android:verticalSpacing="5dp" />

是一个 NoScrollGridView，项目需要，所以用了不滚动的GridView，大家用GridView也是一样的。

noScrollgridview = (GridView) findViewById(R.id.noScrollgridview);noScrollgridview.setSelector(new ColorDrawable(Color.TRANSPARENT));/*新建传值给adapter*/if (file == null) {picAdapter = new PictureAdapter(this, 0, null);} else {//添加失败的图片到数组中for (int i=0;i<file.getMulFailFilePaths().length;i++){ImageItem imageItem = new ImageItem();imageItem.setImagePath(file.getMulFailFilePaths()[i].trim());Bimp.tempSelectBitmap.add(imageItem);}/*上传失败传值给adapter*/picAdapter = new PictureAdapter(this, 2, file);}

这个是初始化图片数组，适配器（新建、上传失败、上传成功的图片我用的都是一个adapter）

ImageItem是图片的模型，下面有它的属性

//从图库选择的图片model
public class ImageItem extends File implements Serializable {@Idpublic String imageId; //图片idpublic String thumbnailPath; public String imagePath; //图片路径private Bitmap bitmap; public boolean isSelected = false;public String getImageId() {return imageId;}public void setImageId(String imageId) {this.imageId = imageId;}public String getThumbnailPath() {return thumbnailPath;}public void setThumbnailPath(String thumbnailPath) {this.thumbnailPath = thumbnailPath;}public String getImagePath() {return imagePath;}public void setImagePath(String imagePath) {this.imagePath = imagePath;}public boolean isSelected() {return isSelected;}public void setSelected(boolean isSelected) {this.isSelected = isSelected;}

    /*根据图片路径获取图片的bitmap*/public Bitmap getBitmap() {            if(bitmap == null){try {bitmap = Bimp.revitionImageSize(imagePath);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return bitmap;}public void setBitmap(Bitmap bitmap) {this.bitmap = bitmap;}}

接下来是适配器：

由于涉及到添加图片，adapter中添加一个flag用来显示新建的图片，将选择的图片添加到公有的图片数组中，初始化的时候加载图片数组显示。（大家在看的时候可以忽略掉我的flag）

@SuppressLint("HandlerLeak")
public class PictureAdapter extends BaseAdapter {private LayoutInflater inflater;private int selectedPosition = -1;private boolean shape;private int flag = 0;//0 默认新建 1上传成功 2上传失败private AppItem_file file;public boolean isShape() {return shape;}private Activity context;public void setShape(boolean shape) {this.shape = shape;}public PictureAdapter(Activity context,int flag,AppItem_file file) {this.context = context;inflater = LayoutInflater.from(context);this.flag = flag;this.file = file;}//    public void update() {
//        loading();
//    }public int getCount() {if (flag==0){   //新建图片if (Bimp.tempSelectBitmap.size() == 6) {return 6;}return (Bimp.tempSelectBitmap.size() + 1);}else if (flag==1){  //上传成功return file.getFileList().size();}else {  //上传失败return file.getMulFailFilePaths().length;}}public Object getItem(int arg0) {if (flag==1){return file.getFileList().get(arg0);}else {return file.getMulFailFilePaths()[arg0];}}public long getItemId(int arg0) {return arg0;}public void setSelectedPosition(int position) {selectedPosition = position;}public int getSelectedPosition() {return selectedPosition;}public View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null) {//根据图片的数量加载不同布局if (getCount()==1&&flag!=0){convertView = inflater.inflate(R.layout.item_published_singal_item,parent, false);}else {convertView = inflater.inflate(R.layout.item_published_grida,parent, false);}holder = new ViewHolder();holder.image = (ImageView) convertView.findViewById(R.id.item_grida_image);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}/*** 根据初始化adapter传过来的flag值，去不同的地方找图片* flag=0，去Bimp的图片数组中找* flag=1，证明上传成功的，去下载好的getFileList中找* flag=2，为上传失败的，图片保存在FailFile中的List<ImageItem>中* by黄海杰 at:2015年7月16日 09:51:25* 优化图片显示* by黄海杰 at:2015年8月3日 17:09:01*/if (flag==0){   //新建图片if (position == Bimp.tempSelectBitmap.size()) {holder.image.setImageBitmap(BitmapFactory.decodeResource(convertView.getResources(), R.drawable.icon_add_pic_unfocused));if (position == 6) {if (flag==0){holder.image.setVisibility(View.GONE);}}} else {holder.image.setImageBitmap(Bimp.tempSelectBitmap.get(position).getBitmap());}}else if (flag==1){  //上传成功
//            List<Integer> ids = new ArrayList<Integer>();
//            for (int i=0;i<file.getFileList().size();i++){
//                ids.add(file.getFileList().get(i).getS_id());
//            }int id=file.getFileList().get(position).getS_id();try {
//                File file= NeedApplication.db.findById(File.class,id);String fileBigImgUri =NeedApplication.db.findById(File.class,id).getFileUriBig();if (fileBigImgUri!=null&&!"null".equals(fileBigImgUri))ImageLoader.getInstance().displayImage((fileBigImgUri).trim(),holder.image);} catch (DbException e) {e.printStackTrace();}}else {  //上传失败String url = "file://"+file.getMulFailFilePaths()[position].trim();ImageLoader.getInstance().displayImage(url, holder.image);}return convertView;}public class ViewHolder {public ImageView image;}}

下面是自定义相册界面，用来选择图片的

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" android:background="#E1E0DE"><RelativeLayoutandroid:id="@+id/headview"android:layout_width="fill_parent"android:layout_height="45dp"android:background="@drawable/plugin_camera_title_bar"android:gravity="center_vertical"android:layout_marginBottom="3dp"><Buttonandroid:layout_width="60dp"android:layout_height="wrap_content"android:textSize="14sp"android:textColor="#fff"android:id="@+id/back"android:text="相册"android:background="@drawable/plugin_camera_title_btn_back"android:layout_marginTop="5dp"android:layout_marginBottom="5dp"android:layout_centerVertical="true"/><Buttonandroid:layout_width="67dp" android:layout_height="wrap_content"android:textSize="14sp"android:textColor="#fff"android:id="@+id/cancel"android:text="取消"android:background="@drawable/plugin_camera_title_btn_cancel"android:layout_centerVertical="true"android:layout_marginRight="5dp"android:layout_alignParentRight="true" /></RelativeLayout><RelativeLayoutandroid:id="@+id/bottom_layout"android:layout_width="match_parent"android:layout_height="50dp"android:layout_alignParentBottom="true"android:background="@drawable/plugin_camera_bottom_bar"android:layout_marginTop="3dp"><Buttonandroid:id="@+id/preview"android:layout_width="90dp"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_centerVertical="true"android:layout_marginLeft="10dp"android:text="预览"android:background="@drawable/plugin_camera_title_btn_preview"/><Buttonandroid:id="@+id/ok_button"android:layout_width="90dp"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_centerVertical="true"android:layout_marginRight="10dp"android:background="@drawable/plugin_camera_ok_btn_state"/></RelativeLayout><GridViewandroid:id="@+id/myGrid"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_above="@id/bottom_layout"android:layout_below="@id/headview"android:layout_centerInParent="true"android:layout_marginTop="2dp"android:horizontalSpacing="10dp"android:numColumns="4"android:verticalSpacing="10dp"android:background="#E1E0DE" /><TextViewandroid:id="@+id/myText"android:layout_width="match_parent"android:layout_height="match_parent"android:gravity="center"android:text="相册没有图片"android:textColor="@color/black"/></RelativeLayout>

同样也是用了GridView，获取手机中的图片，添加到数组中，显示

这里用到了一个AlbumHelper（相册帮助类），网上找的代码，感觉挺好的

public List<ImageBucket> getImagesBucketList(boolean refresh) {if (refresh || (!refresh && !hasBuildImagesBucketList)) {buildImagesBucketList();}List<ImageBucket> tmpList = new ArrayList<ImageBucket>();Iterator<Entry<String, ImageBucket>> itr = bucketList.entrySet().iterator();while (itr.hasNext()) {Entry<String, ImageBucket> entry = (Entry<String, ImageBucket>) itr.next();tmpList.add(entry.getValue());}return tmpList;}

获取到数据源之后，该显示了，也就是利用的获取图片帮助类里面的方法

// 初始化，给一些对象赋值private void init() {helper = AlbumHelper.getHelper();helper.init(getApplicationContext());contentList = helper.getImagesBucketList(false);dataList = new ArrayList<ImageItem>();for(int i = 0; i<contentList.size(); i++){dataList.addAll( contentList.get(i).imageList );}back = (Button) findViewById(R.id.back);cancel = (Button) findViewById(R.id.cancel);cancel.setOnClickListener(new CancelListener());back.setOnClickListener(new BackListener());preview = (Button) findViewById(R.id.preview);preview.setOnClickListener(new PreviewListener());intent = getIntent();Bundle bundle = intent.getExtras();gridView = (GridView) findViewById(R.id.myGrid);gridImageAdapter = new AlbumGridViewAdapter(mContext,dataList,Bimp.tempSelectBitmap);gridView.setAdapter(gridImageAdapter);tv = (TextView) findViewById(R.id.myText);gridView.setEmptyView(tv);okButton = (Button) findViewById(R.id.ok_button);okButton.setText("完成"+"(" + Bimp.tempSelectBitmap.size()+ "/"+ NeedApplication.picNums+")");}

gridImageAdapter.setOnItemClickListener(new AlbumGridViewAdapter.OnItemClickListener() {@Overridepublic void onItemClick(final ToggleButton toggleButton,int position, boolean isChecked,Button chooseBt) {if (Bimp.tempSelectBitmap.size() >= NeedApplication.picNums) {toggleButton.setChecked(false);chooseBt.setVisibility(View.GONE);if (!removeOneData(dataList.get(position))) {Toast.makeText(AlbumActivity.this, "超出可选图片张数", Toast.LENGTH_SHORT).show();}return;}if (isChecked) {chooseBt.setVisibility(View.VISIBLE);Bimp.tempSelectBitmap.add(dataList.get(position));okButton.setText("完成"+"(" + Bimp.tempSelectBitmap.size()+ "/"+ NeedApplication.picNums+")");} else {Bimp.tempSelectBitmap.remove(dataList.get(position));chooseBt.setVisibility(View.GONE);okButton.setText("完成"+"(" + Bimp.tempSelectBitmap.size() + "/"+ NeedApplication.picNums+")");}isShowOkBt();}});

点击图片选择加到公有图片数组中显示已选择

最后是预览图片，利用自定义viewpager，实现图片滑动.....代码就不占了，好多demo

下面贴两张截图吧：