自定义RecyclerView,使其上下有俩个预览图片和mp4的控件
时间: 2024-02-12 08:03:06 浏览: 25
要实现这个功能,您需要创建一个自定义的 RecyclerView.Adapter,在其中添加俩个预览图片和一个 mp4 的控件,然后在 RecyclerView 的布局文件中引用该 Adapter。具体步骤如下:
1. 创建一个自定义的 RecyclerView.Adapter,实现其中的 onCreateViewHolder()、onBindViewHolder() 和 getItemCount() 方法。在 onCreateViewHolder() 方法中创建一个自定义的 ViewHolder,然后在 onBindViewHolder() 方法中为 ViewHolder 中的控件设置数据。同时,在 getItemCount() 方法中返回数据集合的大小。代码示例:
```java
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder> {
private List<Data> mDataList;
public CustomAdapter(List<Data> dataList) {
mDataList = dataList;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
MyViewHolder viewHolder = new MyViewHolder(view);
return viewHolder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
// 为 ViewHolder 中的控件设置数据
Data data = mDataList.get(position);
holder.previewImage1.setImageResource(data.getPreviewImage1());
holder.previewImage2.setImageResource(data.getPreviewImage2());
holder.mp4View.setVideoPath(data.getMp4Path());
}
@Override
public int getItemCount() {
return mDataList.size();
}
class MyViewHolder extends RecyclerView.ViewHolder {
ImageView previewImage1;
ImageView previewImage2;
VideoView mp4View;
public MyViewHolder(View itemView) {
super(itemView);
previewImage1 = itemView.findViewById(R.id.preview_image1);
previewImage2 = itemView.findViewById(R.id.preview_image2);
mp4View = itemView.findViewById(R.id.mp4_view);
}
}
}
```
2. 创建一个布局文件 item_layout.xml,其中包含俩个预览图片和一个 VideoView。代码示例:
```xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="@+id/preview_image1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop" />
<ImageView
android:id="@+id/preview_image2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop" />
<VideoView
android:id="@+id/mp4_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
```
3. 在您的 Activity 或 Fragment 中,创建一个 RecyclerView,并将其设置为自定义的 Adapter。代码示例:
```java
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private CustomAdapter mAdapter;
private List<Data> mDataList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
// 初始化数据集合
mDataList = new ArrayList<>();
mDataList.add(new Data(R.drawable.image1, R.drawable.image2, "mp4_path1"));
mDataList.add(new Data(R.drawable.image3, R.drawable.image4, "mp4_path2"));
mDataList.add(new Data(R.drawable.image5, R.drawable.image6, "mp4_path3"));
// 创建自定义的 Adapter,并设置给 RecyclerView
mAdapter = new CustomAdapter(mDataList);
mRecyclerView.setAdapter(mAdapter);
}
private class Data {
private int mPreviewImage1;
private int mPreviewImage2;
private String mMp4Path;
public Data(int previewImage1, int previewImage2, String mp4Path) {
mPreviewImage1 = previewImage1;
mPreviewImage2 = previewImage2;
mMp4Path = mp4Path;
}
public int getPreviewImage1() {
return mPreviewImage1;
}
public int getPreviewImage2() {
return mPreviewImage2;
}
public String getMp4Path() {
return mMp4Path;
}
}
}
```
这样,您就可以实现一个带有俩个预览图片和一个 mp4 控件的自定义 RecyclerView 了。