supengchao/NineGridImageView

NineGridImageView

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This is a custom widget for Android, which uesd for show grid pictures, such as you see in weibo or wechat.

Sample

Download NineGridImageView-Demo

Features

• set gap between images

  app:imgGap="4dp" or nineGridImageView.setGap(int gap);

• set style

  app:showStyle="fill" or nineGridImageView.setShowStyle(int style);

  default style is STYLE_GRID:

  

  another style is STYLE_FILL:

  

• when only one image, you can set it's size by:

  app:singleImgSize="120dp" or nineGridImageView.setSingleImgSize(int singleImgSize)

Usage

1. Add the dependencies to your build.gradle file, NineGridImageView is avaiable in JCenter:

compile 'com.jaeger.ninegridimageview:library:1.0.0'

2. Add the NineGridImageView to your layout XML:

<com.jaeger.ninegridimageview.NineGridImageView
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_height="wrap_content"
    android:layout_margin="16dp"
    android:layout_width="match_parent"
    app:imgGap="4dp"
    app:showStyle="fill"
    app:singleImgSize="120dp"/>

3. set a NineGridImageViewAdapter for NineGridImageView

nineGridImageView.setAdapter(nineGridViewAdapter);

Here is NineGridImageViewAdapter.class source code:

public abstract class NineGridImageViewAdapter<T> {

    protected abstract void onDisplayImage(Context context, ImageView imageView, T t);

    protected void onItemImageClick(Context context, int index, List<T> list) {
    
    }

    protected ImageView generateImageView(Context context) {
        GridImageView imageView = new GridImageView(context);
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        return imageView;
    }
}			

• T is your image data model, you can simple use String or your own model
• you must override onDisplayImage(Context context, ImageView imageView, T t) method to set load image way, you can use Picasso, Glide or ImageLoader etc, and you can also set place holder for ImageView.
• if you need handle image click event, you can override onItemImageClick(Context context, int index, List<T> list) method, it is easy to handle image click event.
• if you want to customize ImageView, you can override generateImageView(Context context) method, to generate your custom ImageView.

Here is sample code:

private NineGridImageViewAdapter<Photo> mAdapter = new NineGridImageViewAdapter<Photo>() {
	@Override
	protected void onDisplayImage(Context context, ImageView imageView, Photo photo) {
		Picasso.with(context)
		    .load(photo.getSmallUrl)
		    .placeholder(R.drawable.ic_default_image)
		    .into(imageView);
    }

    @Override
    protected ImageView generateImageView(Context context) {
        return super.generateImageView(context);
    }

    @Override
    protected void onItemImageClick(Context context, int index, List<Photo> photoList) {
       showBigPicture(context, photoList.get(index).getBigUrl());
    }
};
        
...
	mNineGridImageView.setAdapter(mAdapter);
...

4. set pictures data to NineGridImageView

nineGridImageView.setImagesData(List<T> imageDataList);

Credits

• panyiho/NineGridView
• w4lle/NineGridView

License

Copyright 2016 Jaeger Chen

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.