用Android写一个放Windows 7图片预览窗格效果 简单的实现
时间: 2024-02-05 20:10:33 浏览: 18
要实现Windows 7图片预览窗格效果,可以使用Android的RecyclerView和CardView组件来实现。
1. 首先,在布局文件中添加一个RecyclerView组件。例如:
```
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
2. 创建一个CardView布局文件,作为每个图片的预览窗格。例如:
```
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:elevation="4dp"
android:padding="8dp">
<ImageView
android:id="@+id/image_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="centerCrop" />
</android.support.v7.widget.CardView>
```
3. 创建一个RecyclerView的Adapter,并在其中实现每个CardView中图片的加载。例如:
```
public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder> {
private Context mContext;
private List<String> mImageUrls;
public ImageAdapter(Context context, List<String> imageUrls) {
mContext = context;
mImageUrls = imageUrls;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.item_image, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
String imageUrl = mImageUrls.get(position);
Glide.with(mContext)
.load(imageUrl)
.into(holder.imageView);
}
@Override
public int getItemCount() {
return mImageUrls.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
ImageView imageView;
ViewHolder(View itemView) {
super(itemView);
imageView = (ImageView) itemView.findViewById(R.id.image_view);
}
}
}
```
4. 在Activity中,将RecyclerView和Adapter关联起来,并设置LayoutManager。例如:
```
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));
List<String> imageUrls = new ArrayList<>();
// 添加图片url到imageUrls中
ImageAdapter adapter = new ImageAdapter(this, imageUrls);
mRecyclerView.setAdapter(adapter);
}
}
```
通过以上步骤,就可以实现一个简单的Windows 7图片预览窗格效果。