想在android中的CardView卡片之间添加水平间距？

Question

想在不使用 cardUseCompatPadding 的情况下在 CardView 的卡片之间添加间距，我该如何实现？

Answer 1

在行上设置 Padding，以便所有项目在每个项目之间设置间距

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:background="#FFF"
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">

// here your views

</LinearLayout>

或者，像这样使用java来分离项目

RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());  
    recyclerView.setLayoutManager(mLayoutManager);
    recyclerView.setNestedScrollingEnabled(false);
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    int spacingInPixels = getResources().getDimensionPixelSize(R.dimen.spacing);
    recyclerView.addItemDecoration(new SpacesItemDecoration(spacingInPixels));

班级

public class SpacesItemDecoration extends RecyclerView.ItemDecoration {
private int space;

public SpacesItemDecoration(int space) {
    this.space = space;
}

@Override
public void getItemOffsets(Rect outRect, View view,
                           RecyclerView parent, RecyclerView.State state) {
    outRect.left = space;
    outRect.right = space;
    outRect.bottom = space;

    // Add top margin only for the first item to avoid double space between items
    if (parent.getChildLayoutPosition(view) == 0) {
        outRect.top = space;
    } else {
        outRect.top = 0;
    }
}

}