Android layout 回收器视图项目未显示涟漪效应/触摸突出显示,我使用手势减损器应用了侦听器

Android layout 回收器视图项目未显示涟漪效应/触摸突出显示,我使用手势减损器应用了侦听器,android-layout,android-recyclerview,recyclerview-layout,Android Layout,Android Recyclerview,Recyclerview Layout,recyclerView.addOnItemTouchListener(新建MyListClickListener(getContext(),新建MyListClickListener.ClickListener()){ @凌驾 公共void onClick(视图v,内部位置){ 公共类MyListClickListener实现RecyclerView.OnItemTouchListener{ private GestureDetector gestureDetector; ClickListe

recyclerView.addOnItemTouchListener(新建MyListClickListener(getContext(),新建MyListClickListener.ClickListener()){ @凌驾 公共void onClick(视图v,内部位置){

公共类MyListClickListener实现RecyclerView.OnItemTouchListener{

private GestureDetector gestureDetector;
ClickListener clickListener;
public MyListClickListener(Context context, ClickListener clickListener){

    this.clickListener = clickListener;
    gestureDetector = new GestureDetector(context,new  GestureDetector.SimpleOnGestureListener(){

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }
    });

}


@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {

    View child = rv.findChildViewUnder(e.getX(),e.getY());
    if(child!= null && clickListener!= null && gestureDetector.onTouchEvent(e)){
        clickListener.onClick(child,rv.getChildPosition(child));
    }
    return true;
}

@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {

}

public interface ClickListener {
    void onClick(View v, int position);
}

}

我认为您正在寻找连锁反应。只需在drawable中创建一个xml文件(ripple.xml),并在其中编写此代码

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?attr/colorControlHighlight">
    <item
        android:id="@android:id/mask"
        android:drawable="@android:color/white"
        >

    </item>
</ripple>
就像在我的例子中,我只有TextView,在父标记中,我声明这两行

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/ripple"
    android:clickable="true"
   >

<TextView
    android:id="@+id/textView_Username"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="30sp"
    android:textColor="@color/colorPrimary"
    android:layout_marginLeft="10dp"
    android:layout_marginTop="10dp"
    />
</LinearLayout>

最后,结果是:

请看此视频:


我认为您正在寻找连锁反应。只需在drawable中创建一个xml文件(ripple.xml),并在其中编写此代码

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?attr/colorControlHighlight">
    <item
        android:id="@android:id/mask"
        android:drawable="@android:color/white"
        >

    </item>
</ripple>
就像在我的例子中,我只有TextView,在父标记中,我声明这两行

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/ripple"
    android:clickable="true"
   >

<TextView
    android:id="@+id/textView_Username"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="30sp"
    android:textColor="@color/colorPrimary"
    android:layout_marginLeft="10dp"
    android:layout_marginTop="10dp"
    />
</LinearLayout>

最后,结果是:

请看此视频:


您刚刚在Recyclar项目布局根视图中添加了两行

android:clickable="true"
android:foreground="?android:selectableItemBackground"


<LinearLayout
  android:id="@+id/root"
  android:layout_width="match_parent"
  android:layout_height="30dp"
  android:clickable="true"
  android:foreground="?android:selectableItemBackground">
<TextView
  android:layout_width="match_parent"
  android:layout_height="20dp" />
</LinearLayout>
android:clickable=“true” android:前台=“?android:selectableItemBackground”
您刚刚在Recyclar项目布局根视图中添加了两行

android:clickable="true"
android:foreground="?android:selectableItemBackground"


<LinearLayout
  android:id="@+id/root"
  android:layout_width="match_parent"
  android:layout_height="30dp"
  android:clickable="true"
  android:foreground="?android:selectableItemBackground">
<TextView
  android:layout_width="match_parent"
  android:layout_height="20dp" />
</LinearLayout>
android:clickable=“true” android:前台=“?android:selectableItemBackground”