首页 文章

recycleler查看项目它没有显示Ripple效果/触摸高亮，我使用手势Detractor应用了Listener

提问于
浏览 次
-1

recyclerView.addOnItemTouchListener（new MyListClickListener（getContext（），new MyListClickListener.ClickListener（）{@Override public void onClick（View v，int position）{

TextView textView = (TextView) v.findViewById(R.id.title);

            Fragment fragment = ((MyPagerAdapter) viewPager.getAdapter()).getFragment(1);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            ft.detach(fragment);
            fragment.onDestroy();
            ft.attach(fragment);
            ft.commit();
            comm.sendData(String.valueOf(textView.getText()));
            viewPager.setCurrentItem(1);

        }
    }));

公共类MyListClickListener实现了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);
}

}

android-layout android-recyclerview recycler-adapter recyclerview-layout

2 回答

  • 2

    我认为你正在寻找涟漪效应 . 只需在drawable中创建一个xml文件（ripple.xml）并在里面写下这段代码

    <?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>

    只需在另一个已声明了recyclerview元素的xml文件中写两行 .

    android:background="@drawable/ripple"
android:clickable="true"

    就像在我的情况下我只有TextView和父标签我声明这两行

    <?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：
    enter image description here

    观看此视频：

    https://www.youtube.com/watch?v=qvVkDb7DqCk

    回复于
  • 1

    您只需在Recyclar项目布局根视图中添加两行

    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>
    回复于

相关问题