我想推出一个列表的片段，但它只是似乎是工作在平板电脑上。当我在手机上运行我的应用程序的应用程序崩溃。有谁知道如何解决这个问题？ code是如下。

错误

 致：java.lang.IllegalArgumentException：如果没有查看发现ID 0x7f0c0050（com.apptacularapps.exitsexpertlondonlite：ID / master_container）的片段FragmentMainList {b76424＃1 ID = 0x7f0c0050}
 

MainActivity.java

 公共类MainActivity扩展ActionBarActivity {

    私人布尔mTwoPane;

    @覆盖
    保护无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;

        FragmentMainList newFragment =新FragmentMainList（）;
        FragmentTransaction交易= getSupportFragmentManager（）的BeginTransaction（）。
        transaction.replace（R.id.master_container，newFragment）;
        器transaction.commit（）;

        如果（findViewById（R.id.detail_container）！= NULL）{
            mTwoPane = TRUE;
        }
    }
}
 

activity_main.xml

 ＆LT;片段
    的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns：工具=htt​​p://schemas.android.com/tool​​s
    机器人：ID =@ + ID / list_main
    机器人：名称=com.apptacularapps.exitsexpertlondonlite.FragmentMainList
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent
    工具：FragmentMainList上下文=
    工具：布局=@安卓布局/ list_content/＆GT;
 

activity_main.xml（sw600dp）

 ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns：工具=htt​​p://schemas.android.com/tool​​s
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent
    机器人：方向=横向
    机器人：showDividers =中间
    工具：上下文=MainActivity。＆GT;

    ＆LT; RelativeLayout的
        机器人：layout_width =0dp
        机器人：layout_height =match_parent
        机器人：layout_weight =1
        机器人：ID =@ + ID / master_container/＆GT;

    ＆LT;的FrameLayout
        机器人：layout_width =0dp
        机器人：layout_height =match_parent
        机器人：layout_weight =3
        机器人：ID =@ + ID / detail_container/＆GT;

＆LT; / LinearLayout中＆GT;
 

FragmentMainList.java

 公共类FragmentMainList扩展android.support.v4.app.Fragment {

    ListView控件list_main;

    的String []的listContent = {
            项目1，
            项目2，
            第3项
    };

    私人布尔mTwoPane;

    公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，捆绑savedInstanceState）{
        视图V = inflater.inflate（R.layout.fragment_main_list，集装箱，假）;
        list_main =（ListView控件）v.findViewById（R.id.list_main）;

        ArrayAdapter＆LT;字符串＆GT;适配器=新的ArrayAdapter＆LT;字符串＆GT;（getActivity（），android.R.layout.simple_list_item_1，的listContent）;
        list_main.setAdapter（适配器）;

        返回伏;
    }
}
 

解决方案

那是因为你有这样的行

  transaction.replace（R.id.master_container，newFragment）;
 

和你没有任何的内部布局 activity_main.xml 具有相同的ID为 master_container

I'm trying to launch a list fragment but it only seems to be working on tablets. When I run my app on phones the app crashes. Does anyone know how to resolve this issue? Code are below.

Error

Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f0c0050 (com.apptacularapps.exitsexpertlondonlite:id/master_container) for fragment FragmentMainList{b76424 #1 id=0x7f0c0050}

MainActivity.java

public class MainActivity extends ActionBarActivity {

    private boolean mTwoPane;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        FragmentMainList newFragment = new FragmentMainList();
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.replace(R.id.master_container, newFragment);
        transaction.commit();

        if (findViewById(R.id.detail_container) != null) {
            mTwoPane = true;
        }
    }
}

activity_main.xml

<fragment
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/list_main"
    android:name="com.apptacularapps.exitsexpertlondonlite.FragmentMainList"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".FragmentMainList"
    tools:layout="@android:layout/list_content"/>

activity_main.xml (sw600dp)

<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"
    android:orientation="horizontal"
    android:showDividers="middle"
    tools:context=".MainActivity" >

    <RelativeLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:id="@+id/master_container"/>

    <FrameLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="3"
        android:id="@+id/detail_container"/>

</LinearLayout>

FragmentMainList.java

public class FragmentMainList extends android.support.v4.app.Fragment {

    ListView list_main;

    String[] listContent = {
            "Item 1",
            "Item 2",
            "Item 3"
    };

    private boolean mTwoPane;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        View v = inflater.inflate(R.layout.fragment_main_list, container, false);
        list_main = (ListView)v.findViewById(R.id.list_main);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1,listContent);
        list_main.setAdapter(adapter);

        return v;
    }
}

it's because you have this line

transaction.replace(R.id.master_container, newFragment);

and you don't have any layout inside activity_main.xml that has the same id as master_container