w4lle / ninegridview

一个九宫格自定义控件，实现类似微信和微博的九宫格图片显示

NineGridLayout

1.简介

这是一个用于实现像微信朋友圈和微博的类似的九宫格图片展示控件，通过自定义viewgroup实现，使用方便。 多图根据屏幕适配，单张图片时需要自己指定图片的宽高；

---

2.使用方法

引用：

compile 'com.w4lle.library:NineLayout:1.0.0'

使用：

在项目的layout文件中添加如下xml即可加入到布局文件

        <com.w4lle.library.NineGridlayout
            android:layout_marginTop="8dp"
            android:id="@+id/iv_ngrid_layout"
            android:layout_height="wrap_content"
            android:layout_width="match_parent" />

支持 padding 和margin

Java Api :

写好自己的Adapter继承自NineGridAdapter:

class Adapter extends NineGridAdapter {

    public Adapter(Context context, List list) {
        super(context, list);
    }

    @Override
    public int getCount() {
        return (list == null) ? 0 : list.size();
    }

    @Override
    public String getUrl(int position) {
        return getItem(position) == null ? null : ((Image)getItem(position)).getUrl();
    }

    @Override
    public Object getItem(int position) {
        return (list == null) ? null : list.get(position);
    }

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

    @Override
    public View getView(int i) {
        ImageView iv = new ImageView(context);
        iv.setScaleType(ImageView.ScaleType.CENTER_CROP);
        iv.setBackgroundColor(Color.parseColor("#f5f5f5"));
        Picasso.with(context).load(getUrl(i)).placeholder(new ColorDrawable(Color.parseColor("#f5f5f5"))).into(iv);
        return iv;
    }
}

代码中使用 :

adapter = new Adapter(context, image);
viewHolder.ivMore.setAdapter(adapter);
viewHolder.ivMore.setOnItemClickListerner(new NineGridlayout.OnItemClickListerner() {
    @Override
    public void onItemClick(View view, int position) {
        //do some thing
        Log.d("onItemClick : " + position);
    }
});

其余API:

setsetGap //设置图片间隔
setDefaultWidth //设置单张图片时的宽度，默认 140 * density
setDefaultHeight //设置单张图片时的高度,默认 140 * density

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3.效果

---

4.协议

/*

• Copyright (C) 2015 w4lle
• Licensed under the Apache License, Version 2.0 (the "License");
• you may not use this file except in compliance with the License.
• You may obtain a copy of the License at
• http://www.apache.org/licenses/LICENSE-2.0
• Unless required by applicable law or agreed to in writing, software
• distributed under the License is distributed on an "AS IS" BASIS,
• WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
• See the License for the specific language governing permissions and
• limitations under the License. */

ninegridview's Issues

是不是多余的requestLayout?

第90行： requestLayout(); 是不是多余重复的呢？
因为遍历addView(child)的时候父类函数内部已经requestlayout()了

希望能持续改进！

希望能持续改进！

不能动态添加图片吗？

不能动态添加图片吗？

支持点击图片查看大图吗？

支持点击图片查看大图吗？

Adapter内部类出现java.lang.ClassCastException异常

你好 我在使用的时候Adapter内部类出现了java.lang.ClassCastException异常，想请教一下

我的Adapter代码：
`
public class WeiboAdapter extends RecyclerView.Adapter<WeiboAdapter.ViewHolder> {

private Context context;
private List<Statuses> statuses;
private  List<List<Image>> imagesList;

static class ViewHolder extends RecyclerView.ViewHolder{
    CardView cardView;
    ImageView user_icon;
    TextView user_name;
    TextView weibo_time;
    TextView weibo_content;
    ImageButton forward;
    ImageButton comment;
    ImageButton like;
    ImageButton more;
    NineGridlayout pic;

    public ViewHolder(View itemView) {
        super(itemView);
        cardView= (CardView) itemView;
        user_icon= (ImageView) itemView.findViewById(R.id.user_image);
        user_name= (TextView) itemView.findViewById(R.id.user_name);
        weibo_time= (TextView) itemView.findViewById(R.id.time_weibo);
        weibo_content= (TextView) itemView.findViewById(R.id.weibo_content);
        forward= (ImageButton) itemView.findViewById(R.id.resend);
        comment= (ImageButton) itemView.findViewById(R.id.comment);
        like= (ImageButton) itemView.findViewById(R.id.like);
        more= (ImageButton) itemView.findViewById(R.id.more_user);
        pic= (NineGridlayout) itemView.findViewById(R.id.iv_ngrid_layout);
    }
}

public WeiboAdapter(List<Statuses> mstatuses, List<List<Image>> datalist) {
    statuses = mstatuses;
    imagesList = datalist;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    if (context==null){
        context=parent.getContext();
    }
    View view= LayoutInflater.from(context).inflate(R.layout.weibo_item,parent,false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    Statuses statuses1=statuses.get(position);
    Glide.with(context).load(R.drawable.adv).into(holder.user_icon);
    holder.weibo_content.setText(statuses1.getText().toString());
    User user=statuses1.getUser();
    holder.user_name.setText(user.getScreen_name());
    holder.weibo_time.setText(statuses1.getCreated_at());
    List<Pic_urls> list = statuses1.getPic_urls();
    System.out.println("Pic list:"+list.size());
    imagesList=new ArrayList<>();
    for (int i = 0; i < statuses.size(); i++) {
        ArrayList<Image> templist=new ArrayList<>();
        for (int j = 0; j < list.size(); j++) {
            Image image=new Image(list.get(j).getThumbnail_pic(),45,45);
            templist.add(image);
        }
        imagesList.add(templist);
    }
    Log.w(TAG, "onBindViewHolder: "+imagesList );
    List<Image> itemList = imagesList.get(position);
    if (itemList.isEmpty() || itemList.isEmpty()) {
        holder.pic.setVisibility(View.GONE);
    } else {
        holder.pic.setVisibility(View.VISIBLE);
        holder.pic.setAdapter(new Adapter(context, imagesList));
    }
}

@Override
public int getItemCount() {
    return statuses.size();
}


class Adapter extends NineGridAdapter {

    public Adapter(Context context, List list) {
        super(context, list);
    }

    @Override
    public int getCount() {
        return (list == null) ? 0 : list.size();
    }

    @Override
    public String getUrl(int position) {
        return getItem(position) == null ? null : ((Image) getItem(position)).getUrl();
    }

    @Override
    public Object getItem(int position) {
        return (list == null) ? null : list.get(position);
    }

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

    @Override
    public View getView(int i, View view) {
        ImageView iv = null;
        if (view != null && view instanceof ImageView) {
            iv = (ImageView) view;
        } else {
            iv = new ImageView(context);
        }
        iv.setScaleType(ImageView.ScaleType.CENTER_CROP);
        iv.setBackgroundColor(context.getResources().getColor((android.R.color.transparent)));
        String url = getUrl(i);
        Picasso.with(context).load(getUrl(i)).placeholder(new ColorDrawable(Color.parseColor("#f5f5f5"))).into(iv);
        if (!TextUtils.isEmpty(url)) {
            iv.setTag(url);
        }
        return iv;
    }
}

}
`
请求指点一下，谢谢！