要在Android上制作无限滚动视图,可以使用RecyclerView和自定义的LayoutManager来实现。下面是一个简单的代码示例:
implementation 'androidx.recyclerview:recyclerview:1.0.0'
public class InfiniteScrollLayoutManager extends LinearLayoutManager {
private static final int DEFAULT_EXTRA_LAYOUT_SPACE = 600;
private int extraLayoutSpace = -1;
public InfiniteScrollLayoutManager(Context context) {
super(context);
}
public InfiniteScrollLayoutManager(Context context, int orientation, boolean reverseLayout) {
super(context, orientation, reverseLayout);
}
public void setExtraLayoutSpace(int extraLayoutSpace) {
this.extraLayoutSpace = extraLayoutSpace;
}
@Override
protected int getExtraLayoutSpace(RecyclerView.State state) {
if (extraLayoutSpace > 0) {
return extraLayoutSpace;
}
return DEFAULT_EXTRA_LAYOUT_SPACE;
}
@Override
public int scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, RecyclerView.State state) {
int scrolled = super.scrollHorizontallyBy(dx, recycler, state);
if (dx != 0 && scrolled == 0) {
if (dx > 0) {
scrolled = 1;
} else {
scrolled = -1;
}
}
return scrolled;
}
@Override
public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
try {
super.onLayoutChildren(recycler, state);
} catch (IndexOutOfBoundsException e) {
Log.e("InfiniteScrollLayoutMgr", "InfiniteScrollLayoutManager crashed", e);
}
}
}
RecyclerView recyclerView = findViewById(R.id.recycler_view);
InfiniteScrollLayoutManager layoutManager = new InfiniteScrollLayoutManager(this);
layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
recyclerView.setLayoutManager(layoutManager);
YourAdapter adapter = new YourAdapter(yourDataList);
recyclerView.setAdapter(adapter);
通过以上步骤,你可以实现一个水平方向的无限滚动视图。你可以根据需要调整LayoutManager的方向和其他属性来适应你的需求。