本文介绍了如何使用水平滚动Android显示图像的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用Recyclerview显示项目列表.现在每次可以有一些照片/多张照片,我需要在单行中水平滚动显示这些照片.
I am using a Recyclerview to show the list of items. Now each time can have some photos/multiple photos which I need to show with horizontal scrolling in a single row.
我目前正在使用Gallery小部件来显示照片,但由于现在已弃用,因此我希望使用其他东西来水平显示与Gallery具有相同功能的图像.你能在这里帮我吗?
I am currently using Gallery widget to show the photos but as it is now deprecated, so I want some other thing to use to show images horizontally with same features as Gallery have. Can you please help me here.
非常感谢高级
推荐答案
以下是显示位图图像的水平滚动RecycleView的示例:
Here is the example of horizontal scrollable RecycleView showing bitmap images:
片段/活动布局:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
...
<android.support.v7.widget.RecyclerView
android:id="@+id/horizontal_recycler_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:layout_marginBottom="15dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:horizontalSpacing="10dp"
android:isScrollContainer="false"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp"
/>
...
</LinearLayout>
项目:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/horizontal_item_view_image"
android:layout_marginRight="10dp"
android:layout_width="109dp"
android:layout_height="109dp" />
</LinearLayout>
适配器:
public class HorizontalPhotosAdapter extends RecyclerView.Adapter<HorizontalPhotosAdapter.MyViewHolder> {
private Context context;
private LayoutInflater inflater;
private ArrayList<Bitmap> bitmapList;
public class MyViewHolder extends RecyclerView.ViewHolder {
private ImageView riv;
public MyViewHolder(View view) {
super(view);
riv = (ImageView) view.findViewById(R.id.horizontal_item_view_image);
}
}
public HorizontalPhotosAdapter(Context context, ArrayList<Bitmap> bitmapList, String[] imageUrls) {
this.context = context;
this.bitmapList = bitmapList;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.horizontal_item_view, parent, false);
if (itemView.getLayoutParams ().width == RecyclerView.LayoutParams.MATCH_PARENT)
itemView.getLayoutParams ().width = RecyclerView.LayoutParams.WRAP_CONTENT;
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
holder.riv.setImageBitmap(bitmapList.get(position));
}
@Override
public int getItemCount() {
return bitmapList.size();
}
}
片段/活动中的实现:
horizontalAdapter=new HorizontalPhotosAdapter(getContext(), bitmapList);
horizontal_recycler_view.setAdapter(horizontalAdapter);
horizontalAdapter.notifyDataSetChanged();
LinearLayoutManager horizontalLayoutManagaer = new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false);
horizontal_recycler_view.setLayoutManager(horizontalLayoutManagaer);
horizontal_recycler_view.setAdapter(horizontalAdapter);
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