从相册获取图片，可删除和添加多张图片功能

发布内容界面添加多张图片。可实现多张图片加载和删除功能

点击添加图片功能放在附件zip包里面，把包解压放入项目中，成library就可以

 添加自定义布局：

 

 <com.xxx.MyGridView
        android:id="@+id/gv_imgs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:horizontalSpacing="5dp"
        android:numColumns="4"
        android:verticalSpacing="5dp" />

 自定义myGridview.java:

 

 

public class MyGridView extends GridView {
    public MyGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyGridView(Context context) {
        super(context);
    }

    public MyGridView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int expandSpec = MeasureSpec.makeMeasureSpec(
                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
}

 

 

发布界面代码功能：

 

MyGridView gv_imgs;
    private ImageAdapter mAdapter;
    private List<String> mList = new ArrayList<>();



 mAdapter = new ImageAdapter(mList, this);
        mAdapter.setCallback(new IDeletePicCallback() {
            @Override
            public void callBack(int position) {
                mList.remove(position);
            }
        });
        gv_imgs.setAdapter(mAdapter);

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode != RESULT_OK) {
            return;
        }
        if (requestCode == REQUEST_IMAGE) {
            List<String> list = data.getStringArrayListExtra(MultiImageSelectorActivity.EXTRA_RESULT);
            if (list != null && list.size() >= 0) {
                mList.addAll(list);
                mAdapter.notifyDataSetChanged();
            }
        }
    }

   适配器 ImageAdapter.java：

 

public class ImageAdapter extends BaseAdapter {
    private List<String> list;
    private Context context;
    private IDeletePicCallback callback;

    public void setCallback(IDeletePicCallback callback) {
        this.callback = callback;
    }

    public ImageAdapter(List<String> list, Context context) {
        this.list = list;
        this.context = context;
    }

    @Override
    public int getCount() {
        if (list == null || list.size() <= 0) {
            return 1;
        } else {
            if (list.size() >= 9) {
                return 9;
            } else {
                return list.size() + 1;
            }
        }
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = LayoutInflater.from(context).inflate(R.layout.item_pic_add, parent, false);
        }
        ImageView iv_del = ViewHolder.get(convertView, R.id.iv_item_del);
        LinearLayout iv_add = ViewHolder.get(convertView, R.id.iv_item_add);
        final ImageView iv_pic = ViewHolder.get(convertView, R.id.iv_item_pic);
        if (list.size() >= 9 && position == 8) {
            iv_add.setVisibility(View.GONE);
            iv_del.setVisibility(View.VISIBLE);
            iv_pic.setVisibility(View.VISIBLE);
            Glide.with(context).load(list.get(position)).diskCacheStrategy(DiskCacheStrategy.ALL).centerCrop().into(iv_pic);
        } else {
            if (position == list.size()) {
                iv_add.setVisibility(View.VISIBLE);
                iv_del.setVisibility(View.GONE);
                iv_pic.setVisibility(View.GONE);
            } else {
                iv_add.setVisibility(View.GONE);
                iv_del.setVisibility(View.VISIBLE);
                iv_pic.setVisibility(View.VISIBLE);
                Glide.with(context).load(list.get(position)).diskCacheStrategy(DiskCacheStrategy.ALL).centerCrop().into(iv_pic);
            }
        }

        iv_add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context,"5555",Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(context, MultiImageSelectorActivity.class);
                intent.putExtra(MultiImageSelectorActivity.EXTRA_SELECT_COUNT, 9 - list.size());
                ((Activity) context).startActivityForResult(intent, REQUEST_IMAGE);
            }
        });
        final int pos = position;
        iv_del.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (callback != null) {
                    callback.callBack(pos);
                }
                notifyDataSetChanged();
            }
        });

        iv_pic.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(context, ImagePagerActivity.class);
                intent.putExtra(ImagePagerActivity.EXTRA_IMAGE_INDEX, pos);
//                ArrayList<String> list = new ArrayList<String>();
//                list.add("file://" + img.path);
                intent.putStringArrayListExtra(ImagePagerActivity.EXTRA_IMAGE_URLS, (ArrayList<String>) list);
                context.startActivity(intent);
            }
        });

        return convertView;
    }

}

适配器布局文件item_pic_add.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#fff"
    android:gravity="center"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/iv_item_pic"
        android:layout_marginTop="15dp"
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:background="#eeede9"
        android:scaleType="centerCrop"
        android:layout_centerVertical="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <RelativeLayout
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_marginLeft="5dp">
    <ImageView
        android:id="@+id/iv_item_del"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_alignParentRight="true"

        android:src="@drawable/img_delete" />
    </RelativeLayout>

    <LinearLayout
        android:id="@+id/iv_item_add"
        android:layout_marginTop="10dp"
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:orientation="vertical"
        android:gravity="center"
        android:scaleType="centerCrop"

        android:background="#f2f2f2"
        android:visibility="gone">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:scaleType="fitXY"
            android:src="@drawable/img_photo_add"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="添加图片"
            android:textSize="12sp"
            android:layout_marginTop="5dp"
            android:textColor="#c6c6c6"/>
    </LinearLayout>


</RelativeLayout>