一个片段里面的ListView给出错误

一个片段里面的ListView给出错误

本文介绍了一个片段里面的ListView给出错误的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个片段里面显示的ListView的问题。我用我的片段ListFragment。我能不能找出在我的实际问题。

CategoriesFragment.java

 公共类CategoriesFragment扩展ListFragment {
LV的ListView;
TextView的电视;
  公共CategoriesFragment(){
  }  @覆盖
  公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
        捆绑savedInstanceState){
    如果(集装箱== NULL)
        返回null;
    。inflater.getContext()getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    查看查看= inflater.inflate(R.layout.categories_fragment,集装箱,FALSE);
    查看的ListView =(ListView控件)view.findViewById(R.id.listview1);
    返回视图。
  }  @覆盖
  公共无效onActivityCreated(捆绑savedInstanceState){
    super.onActivityCreated(savedInstanceState);
    最终的String [] =水果新的String [] {苹果,鳄梨,香蕉,
        蓝莓,椰子,榴莲,番石榴,猕猴桃};
    setListAdapter(新ArrayAdapter<串GT;
        (getActivity(),R.layout.categories_fragment,水果));
  }
}

PagerAdaper.java

 公共类SectionsPagerAdapter扩展FragmentPagerAdapter {
  公共SectionsPagerAdapter(FragmentManager FM){
    超(FM);
  }  @覆盖
  公共片段的getItem(int i)以{
    开关(ⅰ){
     情况下0:
      片段片段=新CategoriesFragment();
      返回片段;
      打破;
     情况1:
      片段片段=新FeaturedFragment();
      返回片段;
      打破
    }
    返回null;
  }  @覆盖
  公众诠释的getCount(){
    返回2;
  }  @覆盖
  公共CharSequence的getPageTitle(INT位置){
    开关(位置){
      情况下0:回归类别;
      案例1:回归精选;
    }
    返回null;
  }
}

categories_fragment.xml

 <?XML版本=1.0编码=UTF-8&GT?;< ListView控件的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
  机器人:ID =@ + ID / ListView1的
  机器人:layout_width =match_parent
  机器人:layout_height =match_parent/>

DDMS错误文本:

  12月9日至6日:37:47.402:E / AndroidRuntime(2611):致命异常:主要
12月9日至6日:37:47.402:E / AndroidRuntime(2611):了java.lang.RuntimeException:您的内容必须有一个ListView的id属性是'android.R.id.list
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.ListFragment.ensureList(ListFragment.java:344)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.ListFragment.onViewCreated(ListFragment.java:145)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:885)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.BackStackRecord.run(BackStackRecord.java:635)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:431)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.view.ViewPager.populate(ViewPager.java:895)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.view.ViewPager.populate(ViewPager.java:772)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1234)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.View.measure(View.java:12723)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.LinearLayout.measureHorizo​​ntal(LinearLayout.java:1017)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.LinearLayout.onMeasure(LinearLayout.java:555)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.View.measure(View.java:12723)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.View.measure(View.java:12723)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.LinearLayout.measureVertical(LinearLayout.java:812)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.View.measure(View.java:12723)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
12月9日至6日:37:47.402:E / AndroidRuntime(2611):在android.widget.FrameLayout.onMeasure(FrameLayout.java:293)


解决方案

更改此

 < ListView控件的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
机器人:ID =@ + ID / ListView1的
机器人:layout_width =match_parent
机器人:layout_height =match_parent/>

 < ListView控件的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
机器人:ID =@机器人:ID /列表
机器人:layout_width =match_parent
机器人:layout_height =match_parent/>

问题是ID。当你扩展的 ListFragment 您的ListView必须有一些ID这样的, @android:ID /列表

I have issues in displaying ListView inside a Fragment. I am using ListFragment in my Fragment. I couldn't able to figure out where my actual issue is.

CategoriesFragment.java

public class CategoriesFragment extends ListFragment {
ListView lv;
TextView tv;
  public CategoriesFragment() {
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    if(container==null)
        return null;
    inflater.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.categories_fragment,container,false);
    View listView = (ListView)view.findViewById(R.id.listview1);
    return view;
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    final String[] fruits = new String[] { "Apple", "Avocado", "Banana",
        "Blueberry", "Coconut", "Durian", "Guava", "Kiwifruit"};
    setListAdapter(new ArrayAdapter<String>
        (getActivity(),R.layout.categories_fragment,fruits));
  }
}

PagerAdaper.java

public class SectionsPagerAdapter extends FragmentPagerAdapter {
  public SectionsPagerAdapter(FragmentManager fm) {
    super(fm);
  }

  @Override
  public Fragment getItem(int i) {
    switch(i) {
     case 0:
      Fragment fragment = new CategoriesFragment();
      return fragment;
      break;
     case 1:
      Fragment fragment = new FeaturedFragment();
      return fragment;
      break
    }
    return null;
  }

  @Override
  public int getCount() {
    return 2;
  }

  @Override
  public CharSequence getPageTitle(int position) {
    switch (position) {
      case 0: return "CATEGORIES";
      case 1: return "FEATURED";
    }
    return null;
  }
}

categories_fragment.xml

<?xml version="1.0" encoding="utf-8"?>

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/listview1"
  android:layout_width="match_parent"
  android:layout_height="match_parent"/>

DDMS error text:

09-06 12:37:47.402: E/AndroidRuntime(2611): FATAL EXCEPTION: main
09-06 12:37:47.402: E/AndroidRuntime(2611): java.lang.RuntimeException: Your content        must have a ListView whose id attribute is 'android.R.id.list'
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.ListFragment.ensureList(ListFragment.java:344)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.ListFragment.onViewCreated(ListFragment.java:145)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:885)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:635)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:431)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.view.ViewPager.populate(ViewPager.java:895)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.view.ViewPager.populate(ViewPager.java:772)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1234)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.View.measure(View.java:12723)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1017)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:555)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.View.measure(View.java:12723)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.View.measure(View.java:12723)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:812)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.View.measure(View.java:12723)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
09-06 12:37:47.402: E/AndroidRuntime(2611):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
解决方案

Change this

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listview1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

to,

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

The problem is with the ID. When you extend ListFragment your ListView must have id something like this, @android:id/list

这篇关于一个片段里面的ListView给出错误的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-18 20:40