片段中的列表视图不滚动

概述我的活动中有一个表格内容,其中有3个选项卡,每个选项卡内容都有一个片段,并将它们命名为OneFragment,TwoFragment和ThirdFragment现在在我的TwoFragment类中,该类可以处理第二个选项卡内容,它具有一个listview控件.现在的问题： 我不知道为什么列表控件不滚动！这是我的活动代码：称

我的活动中有一个表格内容,其中有3个选项卡,每个选项卡内容都有一个片段,并将它们命名为OneFragment,TwoFragment和ThirdFragment
现在在我的TwoFragment类中,该类可以处理第二个选项卡内容,它具有一个ListvIEw控件.

现在的问题：
 我不知道为什么列表控件不滚动！

这是我的活动代码：称之为foot_recipe类

package com.example.androID.dezcook;import androID.content.ContentValues;import androID.content.Context;import androID.content.Intent;import androID.database.Cursor;import androID.database.sqlException;import androID.database.sqlite.sqliteDatabase;import androID.os.Bundle;import androID.support.design.Widget.floatingActionbutton;import androID.support.design.Widget.Snackbar;import androID.support.design.Widget.TabLayout;import androID.support.v4.app.Fragment;import androID.support.v4.app.FragmentManager;import androID.support.v4.app.FragmentPagerAdapter;import androID.support.v4.vIEw.VIEwPager;import androID.support.v7.app.AppCompatActivity;import androID.support.v7.Widget.Toolbar;import androID.util.Log;import androID.vIEw.VIEw;import androID.Widget.TextVIEw;import androID.Widget.Toast;import java.io.IOException;import java.util.ArrayList;import java.util.List;public class Foot_recipe extends AppCompatActivity {    /*Layout PropertIEs define*/    private Toolbar toolbar;    private TabLayout tabLayout;    private VIEwPager vIEwPager;    private Food send_info;    private int[] tabIcons = {            R.drawable.tab_details_imagealbum,            R.drawable.tab_details_cookie,            R.drawable.tab_details_camera    };    /*End layout propetIEs DeFinition*/    /*Start Logic deFinition from here*/    /*End Logic DeFinition*/    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_foot_recipe);        //get data from intent sended from cardvIEw        String txtID = "";        Intent intent = getIntent();        //   Bundle bundle=intent.getExtras();        // if(bundle!=null)txtID=bundle.getString("txtID");        Food food = (Food) intent.getParcelableExtra("food_obj");        send_info = food;        //tool bar customization        TextVIEw toolbar_Title = (TextVIEw) findVIEwByID(R.ID.toolbar_Title);        toolbar_Title.setText(food.getTxtname());        toolbarCustomization();        //Tab customization        tabCustomization();        //Customize floatting button        Actionbutton_fav(food.getTxtID());    }    public voID Actionbutton_fav(final int ID) {        floatingActionbutton fav = (floatingActionbutton) findVIEwByID(R.ID.fav_btn_heart);        fav.setonClickListener(new VIEw.OnClickListener() {            @OverrIDe            public voID onClick(VIEw v) {                if (addDBfav(ID) > 0)                    Snackbar.make(v, "added to fav List", Snackbar.LENGTH_SHORT).show();                else                    Snackbar.make(v, "not in fav List", Snackbar.LENGTH_SHORT).show();            }        });    }    public Food sendFrag_info() {        return send_info;    }    /*Layout Section    * All Layout code about food details are down sIDe this page    * */    private voID toolbarCustomization() {        toolbar = (Toolbar) findVIEwByID(R.ID.foodrestoolbar);        setSupportActionbar(toolbar);        getSupportActionbar().setdisplayHomeAsUpEnabled(true);    }    private voID tabCustomization() {        vIEwPager = (VIEwPager) findVIEwByID(R.ID.vIEwpager);        setupVIEwPager(vIEwPager);        tabLayout = (TabLayout) findVIEwByID(R.ID.tabs);        tabLayout.setupWithVIEwPager(vIEwPager);        setupTabIcons();        tabLayout.getTabAt(2).select();    }    private voID setupTabIcons() {        tabLayout.getTabAt(0).setIcon(tabIcons[0]);        tabLayout.getTabAt(1).setIcon(tabIcons[1]);        tabLayout.getTabAt(2).setIcon(tabIcons[2]);    }    private voID setupVIEwPager(VIEwPager vIEwPager) {        VIEwPagerAdapter adapter = new VIEwPagerAdapter(getSupportFragmentManager());        adapter.addFragment(new OneFragment(), "desc");        adapter.addFragment(new TwoFragment(), "material");        adapter.addFragment(new ThreeFragment(), "pic");        vIEwPager.setAdapter(adapter);    }    class VIEwPagerAdapter extends FragmentPagerAdapter {        private final List<Fragment> mFragmentList = new ArrayList<>();        private final List<String> mFragmentTitleList = new ArrayList<>();        public VIEwPagerAdapter(FragmentManager manager) {            super(manager);        }        @OverrIDe        public Fragment getItem(int position) {            return mFragmentList.get(position);        }        @OverrIDe        public int getCount() {            return mFragmentList.size();        }        public voID addFragment(Fragment fragment, String Title) {            mFragmentList.add(fragment);            mFragmentTitleList.add(Title);        }        @OverrIDe        public CharSequence getPageTitle(int position) {            return mFragmentTitleList.get(position);        }    }    public int addDBfav(int ID) {        sqliteDatabase sqliteDatabase;        DbHelper myDbHelper = new DbHelper(this);/* try{            myDbHelper.createDatabase();        }catch (IOException e)        {            throw new Error("unable to create database");    }*//*        myDbHelper.openDataBase();        sqliteDatabase = myDbHelper.getWritableDatabase();        Cursor cursor = sqliteDatabase.rawquery("UPDATE food SET fav=1 WHERE food_ID ==" + ID + ";", null);        Log.i("successfully:", Integer.toString(cursor.getCount()));        return 1;*/    myDbHelper.openDataBase();        ContentValues values=new ContentValues();        values.put("fav","1");        myDbHelper.openDataBase();        sqliteDatabase sqliteDatabase1=myDbHelper.getMyDataBase();       int part= sqliteDatabase1.update("food",values,"food_ID="+ID,null);        myDbHelper.close();        Log.i("update","successful"+part);        return  part;    }}

这是我的TwoFragment类代码：

包com.example.androID.dezcook;

import androID.content.Context;import androID.net.Uri;import androID.os.Bundle;import androID.support.annotation.Nullable;import androID.support.v4.app.Fragment;import androID.util.Log;import androID.vIEw.LayoutInflater;import androID.vIEw.VIEw;import androID.vIEw.VIEwGroup;import androID.Widget.ArrayAdapter;import androID.Widget.listadapter;import androID.Widget.ListVIEw;import androID.Widget.TextVIEw;import com.example.androID.dezcook.R;import java.lang.reflect.Array;import java.util.ArrayList;import java.util.List;public class TwoFragment extends Fragment {    public TwoFragment()    {    }    @OverrIDe    public voID onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);    }    @OverrIDe    public VIEw onCreateVIEw(LayoutInflater inflater, VIEwGroup container,                             Bundle savedInstanceState) {        // Inflate the layout for this fragment        VIEw v = inflater.inflate(R.layout.fragment_two, container, false);        Foot_recipe foot_recipe=(Foot_recipe)getActivity();        Food food=foot_recipe.sendFrag_info();      /*  ListVIEw ListVIEw=(ListVIEw)v.findVIEwByID(R.ID.show_items);        ListVIEw.setAdapter();*/      String[] arr=food.getItems().split("،");        Log.i("LogArr",arr[0]);      //  ArrayAdapter adapter = new ArrayAdapter<String>(getActivity(),R.layout.List_items_frag, arr);        ListVIEw ListVIEw = (ListVIEw) v.findVIEwByID(R.ID.show_items);        ListVIEw.setAdapter(new details_List_adapter(getActivity(),arr));        return v;    }}

和TwoFragment xml代码：

<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"    xmlns:tools="http://schemas.androID.com/tools"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"    xmlns:app="http://schemas.androID.com/apk/res-auto"    tools:context="com.example.androID.dezcook.TwoFragment"    androID:background="@drawable/gradIEnt_background"    >    <!-- Todo: Update blank fragment layout -->    <ListVIEw        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:ID="@+ID/show_items"        androID:divIDer="@color/colorPrimaryDark"        /></linearLayout>

最后是调用foot_recipe xml代码的活动：

<androID.support.design.Widget.CoordinatorLayout    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="match_parent">    <androID.support.design.Widget.AppbarLayout        androID:background="@drawable/xml_header_background"        androID:layout_wIDth="match_parent"        androID:layout_height="wrap_content"        androID:theme="@style/themeOverlay.AppCompat.Dark.Actionbar">        <androID.support.v7.Widget.Toolbar            androID:ID="@+ID/foodrestoolbar"            androID:layout_wIDth="match_parent"            androID:layout_height="?attr/actionbarSize"            androID:background="@drawable/xml_header_background"            app:layout_scrollFlags="scroll|enteralways"            androID:layout_gravity="right"            app:title=" "            androID:gravity="right"            >            <TextVIEw                androID:layout_wIDth="wrap_content"                androID:layout_height="wrap_content"                androID:text="foot specail"                androID:layout_gravity="right"                androID:textSize="25dp"                androID:textStyle="bold"                androID:layout_marginRight="10dp"                androID:textcolor="#ffffff"                androID:ID="@+ID/toolbar_Title" />        </androID.support.v7.Widget.Toolbar>        <androID.support.design.Widget.TabLayout            androID:ID="@+ID/tabs"            androID:layout_wIDth="match_parent"            androID:layout_height="wrap_content"            app:tabMode="fixed"            app:tabIndicatorcolor="@color/cardvIEw_dark_background"            app:tabSelectedTextcolor="@color/cardvIEw_dark_background"            app:tabGravity="fill"/>    </androID.support.design.Widget.AppbarLayout>    <androID.support.v4.vIEw.VIEwPager        androID:ID="@+ID/vIEwpager"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        app:layout_behavior="@string/appbar_scrolling_vIEw_behavior"  />    <androID.support.design.Widget.floatingActionbutton        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:src="@drawable/floating_btn_heart"        androID:layout_gravity="bottom|right"        androID:background="@color/colorPrimary"        androID:layout_margin="20dp"        androID:ID="@+ID/fav_btn_heart"        /></androID.support.design.Widget.CoordinatorLayout> 

解决方法:

尝试添加以下代码：

ListVIEw.setontouchListener(new ListVIEw.OntouchListener() {                    @OverrIDe                    public boolean ontouch(VIEw v, MotionEvent event) {                        int action = event.getAction();                        switch (action) {                            case MotionEvent.ACTION_DOWN:                                events.                                v.getParent().requestdisallowIntercepttouchEvent(true);                                break;                            case MotionEvent.ACTION_UP:                                events.                                 v.getParent().requestdisallowIntercepttouchEvent(false);                                break;                        }                        v.ontouchEvent(event);                        return true;                    }                });

说明,AndroID对嵌套滚动没有很好的支持,因此您需要禁用“父级”触摸管理并将事件传递给视图.

希望这个帮助

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