我有CardView,其中包含ImageView(大小为100dp),TextView X3,其中包含大量文本。 在回收者视图中,当在我的onBindViewHolder中创建项目视图时,我将TextView的可见性设置为GONE以隐藏它们,并仅显示图像视图。
当我单击它时,我需要将TextViews的可见性设置为VISIBLE,但是要正确显示文本,我需要扩展项目视图(以使其最大化)。 我可以通过将高度和宽度设置为wrap-content来完成此操作,但是由于我的网格布局中连续有3个项目,因此ItemView仅扩展到了hight。
如何使选定的ItemView与其他项目重叠?
请查看帖子末尾的附件。
我现在所拥有的:
我的适配器:
public class LightsAdapter extends RecyclerView.Adapter<LightsAdapter.LightsViewHolder> {
private Context context;
private ArrayList<Light> lights;
private OnLightImageClickListener onLightImageClickListener;
private int selected = -1;
private Light light;
public LightsAdapter(Context context, ArrayList<Light> lights) {
this.context = context;
this.lights = lights;
}
public interface OnLightImageClickListener {
void onLightImageClick(int position);
}
public void setOnLightImageClickListener(OnLightImageClickListener onLightImageClickListener) {
this.onLightImageClickListener = onLightImageClickListener;
}
@NonNull
@Override
public LightsViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.lights_item, parent, false);
return new LightsViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull LightsViewHolder holder, int position) {
light = lights.get(position);
holder.rootItemView.setTag(position);
holder.TVlightTitle.setText(light.getLampTitle());
holder.TVLightDesc.setText(light.getLampDesc());
holder.TVLightType.setText(String.valueOf(light.getLampType()));
Glide.with(context)
.load(light.getLampImageUrl())
.placeholder(R.drawable.ic_launcher_background)
.override(200, 200)
.into(holder.IVLightImage);
// setBackGround(holder);
hideLightInfo(holder);
if (position == selected) {
showLightInfo(holder);
} else {
hideLightInfo(holder);
}
holder.rootItemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int position = (int) view.getTag();
selected = position;
if (onLightImageClickListener != null) {
onLightImageClickListener.onLightImageClick(position);
}
notifyDataSetChanged();
}
});
}
@Override
public int getItemCount() {
return lights.size();
}
public class LightsViewHolder extends RecyclerView.ViewHolder {
private TextView TVlightTitle;
private TextView TVLightDesc;
private TextView TVLightType;
private ImageView IVLightImage;
private CardView rootItemView;
public LightsViewHolder(@NonNull View itemView) {
super(itemView);
TVlightTitle = itemView.findViewById(R.id.lightTitle);
TVLightDesc = itemView.findViewById(R.id.lightDesc);
TVLightType = itemView.findViewById(R.id.lightType);
IVLightImage = itemView.findViewById(R.id.lightImage);
rootItemView = itemView.findViewById(R.id.rootItemView);
}
}
public void hideLightInfo(LightsViewHolder holder) {
holder.TVlightTitle.setVisibility(View.GONE);
holder.TVLightDesc.setVisibility(View.GONE);
holder.TVLightType.setVisibility(View.GONE);
holder.IVLightImage.setVisibility(View.VISIBLE);
}
public void showLightInfo(LightsViewHolder holder) {
holder.TVlightTitle.setVisibility(View.VISIBLE);
holder.TVLightDesc.setVisibility(View.VISIBLE);
holder.TVLightType.setVisibility(View.VISIBLE);
holder.IVLightImage.setVisibility(View.GONE);
}
public void setBackGround(LightsViewHolder holder) {
if (light.getLampType() == 1) {
holder.rootItemView.setBackgroundColor(Color.GREEN);
} else {
holder.rootItemView.setBackgroundColor(Color.RED);
}
}
我的xml文件:
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/rootItemView"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_margin="15dp"
android:orientation="vertical"
android:translationZ="2dp"
card_view:cardCornerRadius="100dp"
card_view:cardElevation="3dp">
<LinearLayout
android:padding="15dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/lightTitle"
tools:text="lightTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold" />
<TextView
android:id="@+id/lightDesc"
tools:text="lightDesc"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/lightType"
tools:text="lightType"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold" />
<ImageView
android:id="@+id/lightImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</androidx.cardview.widget.CardView>
在这2张图片中,您可以看到我现在所拥有的。 如何在单击时使项目最大并与其他项目重叠?