Min SDK 为 21。当我在回收器适配器中单击卡片视图时,不会出现涟漪效应,而是进入下一个屏幕。recyclerview 在一个片段内。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="@+id/entire_card"
android:layout_width="match_parent"
android:layout_height="265dp"
android:layout_margin="8dp"
android:foreground="?android:attr/selectableItemBackground"
app:cardUseCompatPadding="true"
app:cardCornerRadius="2dp"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ProgressBar
android:id="@+id/progressbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"
android:paddingTop="120dp"
android:visibility="visible"/>
<ImageView
android:id="@+id/pet_image"
android:layout_width="match_parent"
android:layout_height="210dp"
android:layout_alignParentTop="true"
android:scaleType="centerCrop"
android:src="@drawable/placeholder"
android:visibility="gone"
/>
<TextView
android:id="@+id/pet_description"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_below="@+id/pet_image"
android:padding="10dp"
android:textColor="#FFFFFF"
android:visibility="gone"
android:textSize="20sp"
android:background="@color/primaryColour"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
我对每个项目都有我的 onClick 的适配器代码。
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView petInfo;
public ImageView imgURL;
public ProgressBar progressBar;
private Context itemContext;
public ViewHolder(View v){
super(v);
imgURL = (ImageView) v.findViewById(R.id.pet_image);
petInfo = (TextView) v.findViewById(R.id.pet_description);
progressBar = (ProgressBar) v.findViewById(R.id.progressbar);
itemContext = v.getContext();
v.setOnClickListener(this);
}
@Override
public void onClick(View v){
Intent intent= new Intent(itemContext, DetailCardLayout.class);
Integer position = getAdapterPosition();
intent.putExtra("CARDVIEW_POSITION", position);
v.getContext().startActivity(intent);
}
}