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ScrollView嵌套RecyclerView滚动冲突

2022-08-03 10:39:00 【51CTO】

ScrollView嵌套RecyclerView滚动冲突

1. 概述
2.布局
3.MainActivity

1. 概述

使用ScrollView嵌套RecyclerView会造成滚动冲突。这个问题可以使用NestedScrollView来解决。

2.布局

       
       <?xml 
       
       version="1.0" encoding="utf-8"?>
       
       <
       
       LinearLayout 
       
       xmlns:android=
       
       "http://schemas.android.com/apk/res/android"
       
       android:id=
       
       "@+id/rl_root"
       
       android:layout_width=
       
       "match_parent"
       
       android:layout_height=
       
       "match_parent"
       
       android:orientation=
       
       "vertical"
       
       >
       
       <
       
       androidx.core.widget.NestedScrollView
       
       android:layout_width=
       
       "match_parent"
       
       android:layout_height=
       
       "match_parent"
       
       >
       
       <
       
       LinearLayout
       
       android:layout_width=
       
       "match_parent"
       
       android:layout_height=
       
       "wrap_content"
       
       android:orientation=
       
       "vertical"
       
       android:paddingLeft=
       
       "5dp"
       
       android:paddingRight=
       
       "5dp"
       
       >
       
       <
       
       LinearLayout
       
       android:layout_width=
       
       "match_parent"
       
       android:layout_height=
       
       "wrap_content"
       
       android:layout_marginStart=
       
       "10dp"
       
       android:layout_marginLeft=
       
       "10dp"
       
       android:layout_marginTop=
       
       "10dp"
       
       android:gravity=
       
       "center_vertical"
       
       android:orientation=
       
       "horizontal"
       
       >
       
       <
       
       TextView
       
       android:id=
       
       "@+id/textView1"
       
       android:layout_width=
       
       "wrap_content"
       
       android:layout_height=
       
       "wrap_content"
       
       android:layout_gravity=
       
       "top|left"
       
       android:text=
       
       "单号：" 
       
       />
       
       <
       
       androidx.recyclerview.widget.RecyclerView
       
       android:id=
       
       "@+id/rv_num"
       
       android:layout_width=
       
       "match_parent"
       
       android:layout_height=
       
       "200dp"
       
       android:minHeight=
       
       "20dp" 
       
       />
       
       </
       
       LinearLayout
       
       >
       
       <
       
       TextView
       
       android:layout_width=
       
       "wrap_content"
       
       android:layout_height=
       
       "wrap_content"
       
       android:textColor=
       
       "@android:color/black"
       
       android:text=
       
       "最多可上传4张"
       
       />
       
       <
       
       TextView
       
       android:layout_width=
       
       "wrap_content"
       
       android:layout_height=
       
       "wrap_content"
       
       android:textColor=
       
       "@android:color/black"
       
       android:text=
       
       "最多可上传4张"
       
       />
       
                ...
       
       </
       
       LinearLayout
       
       >
       
       </
       
       androidx.core.widget.NestedScrollView
       
       >
       
       </
       
       LinearLayout
       
       >
      
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3.MainActivity

       
       public 
       
       class 
       
       MainActivity 
       
       extends 
       
       AppCompatActivity {
       
       private 
       
       RecyclerView 
       
       mRV;
       
       @Override
       
       protected 
       
       void 
       
       onCreate(
       
       Bundle 
       
       savedInstanceState) {
       
       super.
       
       onCreate(
       
       savedInstanceState);
       
       setContentView(
       
       R.
       
       layout.
       
       activity_main);
       
       // 运单号列表
       
       mRV 
       
       = (
       
       RecyclerView) 
       
       findViewById(
       
       R.
       
       id.
       
       rv_num);
       
       // 防止卡顿
       
       mRV.
       
       setHasFixedSize(
       
       true);
       
       mRV.
       
       setNestedScrollingEnabled(
       
       true);
       
       LinearLayoutManager 
       
       linearLayoutManager 
       
       = 
       
       new 
       
       LinearLayoutManager(
       
       this);
       
       linearLayoutManager.
       
       setSmoothScrollbarEnabled(
       
       true);
       
       // 取消recycleview的滑动
       
       mRV.
       
       setLayoutManager(
       
       linearLayoutManager);
       
       List
       
       <
       
       String
       
       > 
       
       list 
       
       = 
       
       new 
       
       ArrayList
       
       <>();
       
       for(
       
       int 
       
       i 
       
       = 
       
       0; 
       
       i 
       
       < 
       
       30;
       
       i
       
       ++){
       
       list.
       
       add(
       
       "020-88888"
       
       +
       
       i);
       
        }
       
       mRV.
       
       setAdapter(
       
       new 
       
       RVAdapter(
       
       list));
       
    }
       
}
      
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