greedo-layout-for-android
介绍:
一个自定义的RecyclerView layout manager ,可以将图片按照网格布局,并保持图片的长宽比。
运行效果:
使用说明:
通过Gradle下载最新的版本:
repositories {
maven { url 'https://github.com/500px/greedo-layout-for-android/raw/master/releases/' }
}
dependencies {
compile 'com.fivehundredpx:greedo-layout:1.0.0'
}
要了解GreedoLayout完整的用法参见sample 项目。下面是几个特殊的步骤:
// Create an instance of the GreedoLayoutManager and pass it to the RecyclerView
MyRecyclerAdapter recyclerAdapter = new MyRecyclerAdapter(this);
GreedoLayoutManager layoutManager = new GreedoLayoutManager(recyclerAdapter);
RecyclerView recyclerView = (RecyclerView)findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(recyclerAdapter);
// Set the max row height in pixels
layoutManager.setMaxRowHeight(300);
// If you would like to add spacing between items (Note, MeasUtils is in the sample project)
int spacing = MeasUtils.dpToPx(4, this);
recyclerView.addItemDecoration(new GreedoSpacingItemDecoration(spacing));
然后在你的RecyclerView adapter或者你选择的其它类中实现SizeCalculatorDelegate。这个实现将被传递到上面的 layout manager 。
public class MyRecyclerAdapter extends RecyclerView.Adapter<ViewHolder> implements SizeCalculatorDelegate {
@Override
public double aspectRatioForIndex(int index) {
// Return the aspect ratio of your image at the given index
}
}
已下载
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