Question

我正在尝试让我的替换片段出现在详细信息片段中，但在平板电脑模拟器上调试我的应用并选择必要的列表视图项后，日志猫会给我这个错误：

引起：java.lang.IllegalArgumentException：找不到片段FragmentWCBank {3b4ea8fb＃0 id = 0x7f0c0050}
的id 0x7f0c0050（com.apptacularapps.exitsexpertlondonlite：id / detail_container）的视图

当我的片段在我的项目中时，我真的不明白为什么我收到此错误。有谁知道我做错了什么以及如何解决这个问题？

FragmentWCLine.java

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

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

    public final static String EXTRA_MESSAGE = "Station_key";

    private class WC {
        private CharSequence station;
        private CharSequence zone;
        private Class<? extends Activity> activityClass;
        private Class<? extends android.support.v4.app.Fragment> fragmentClass;

        public WC(int stationResId, int zoneResId, Class<? extends Activity> activityClass, Class<? extends android.support.v4.app.Fragment> fragmentClass) {
            this.fragmentClass = fragmentClass;
            this.activityClass = activityClass;
            this.station = getResources().getString(stationResId);
            this.zone = getResources().getString(zoneResId);
        }

        @Override
        public String toString() { return station.toString(); }
        public String getzone(){ return zone.toString(); }
    }

    private static WC[] mWC;

    private boolean mTwoPane;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        View v = inflater.inflate(R.layout.fragment_wc_line, container, false);

        // Instantiate the list of stations.
        mWC = new WC[]{
                new WC(R.string.bank, R.string.zone_1, WCBankActivity.class, FragmentWCBank.class),
                new WC(R.string.wat, R.string.zone_1, WCWATActivity.class, FragmentWCWAT.class)
        };

        final ListView listView = (ListView)v.findViewById(R.id.list_wc);
        listView.setAdapter(new MyAdapter(getActivity(), mWC));
        listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if(mTwoPane){

                    setItemNormal();
                    View rowView = view;
                    setItemSelected(rowView);
                }
                else{
                    Intent intent = new Intent(getActivity(), mWC[position].activityClass);
                    String station = mWC[position].station.toString();
                    intent.putExtra(EXTRA_MESSAGE, station);

                    startActivity(intent);
                }
            }

            public void setItemSelected(View view){
                View rowView = view;
                view.setBackgroundColor(Color.parseColor("#66CCCC"));

                TextView tv0 = (TextView)rowView.findViewById(R.id.list_item_station);
                tv0.setTextColor(Color.parseColor("#000099"));

                TextView tv1 = (TextView)rowView.findViewById(R.id.list_item_zone);
                tv1.setTextColor(Color.parseColor("#000099"));
            }

            public void setItemNormal()
            {
                for (int i=0; i< listView.getChildCount(); i++) {
                    View v = listView.getChildAt(i);
                    v.setBackgroundColor(Color.TRANSPARENT);

                    TextView tv0 = ((TextView) v.findViewById(R.id.list_item_station));
                    tv0.setTextColor(Color.WHITE);

                    TextView tv1 = ((TextView) v.findViewById(R.id.list_item_zone));
                    tv1.setTextColor(Color.parseColor("#B5B5B5"));
                }
            }
        });

        return v;
    }

    static class MyAdapter extends BaseAdapter {

        static class ViewHolder {
            TextView station;
            TextView zone;
        }

        LayoutInflater inflater;
        WC[] mWC;

        public MyAdapter(Context contexts, WC[] samples) {
            this.mWC = samples;
            inflater = LayoutInflater.from(contexts);
        }

        @Override
        public int getCount() {
            return mWC.length;
        }

        @Override
        public Object getItem(int position) {
            return mWC[position];
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        /**set selected position**/
        private int selectPosition = -1;
        public void setSelectPosition(int position){
            if(position!=selectPosition){
                selectPosition = position;
            }
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder viewHolder;
            if (convertView == null) {
                convertView = inflater.inflate(R.layout.list_item_dualline, null);
                viewHolder = new ViewHolder();

                viewHolder.station = (TextView) convertView.findViewById(R.id.list_item_station);
                viewHolder.zone = (TextView) convertView.findViewById(R.id.list_item_zone);
                convertView.setTag(viewHolder);
            } else {
                viewHolder = (ViewHolder) convertView.getTag();
            }
            viewHolder.station.setText(mWC[position].station);
            viewHolder.zone.setText(mWC[position].getzone());

            //change item color
            if(position==selectPosition){
                convertView.setBackgroundColor(Color.parseColor("#000099"));
                viewHolder.station.setTextColor(Color.parseColor("#000099"));
            }else {

            }

            return convertView;
        }
    }
}

WCBankActivity.java

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBarActivity;


public class WCBankActivity extends ActionBarActivity {

    public final static String EXTRA_MESSAGE = "Station_key";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_wc_bank);

        if (savedInstanceState == null) {
            // Get the message from the intent
            Intent intent = getIntent();
            // Notice to specify the sender Activity for the message
            String station = intent.getStringExtra(WCBankActivity.EXTRA_MESSAGE);

            FragmentWCBank newFragment = new FragmentWCBank();
            FragmentTransaction transaction = this.getSupportFragmentManager().beginTransaction();
            transaction.replace(R.id.detail_container, newFragment);
            transaction.commit();
        }
    }
}

FragmentWCBank.java

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_wc_bank, container, false);

        return v;
    }
}

片段通胀 enter image description here

fragment_wc_bank.xml布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/detail_container">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="Bank"
        android:id="@+id/textView0"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />
</RelativeLayout>

fragment_wc_line.xml布局

<?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:id="@+id/fragmentwcline">

    <ListView
        android:id="@+id/list_wc"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerVertical="false"
        android:layout_centerHorizontal="true"/>

</LinearLayout>

activity_main.xml布局

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/master_container"
    android:name="com.apptacularapps.exitsexpertlondonlite.FragmentMainList"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

activity_main.xml布局（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>

不受欢迎的结果 enter image description here

Answer 1

您的代码transaction.replace（R.id。detail_container ...现在这可能是正确的UI元素。我假设这是正确的UI。如果是这样，fragment_wc_bank布局xml会没有该ID detail_container，因此您会收到错误，就像那样简单。但是 activity_main.xml 具有该ID，我再次假设detail_container是您想要的正确用户界面

建议代码FROM：

setContentView(R.layout.fragment_wc_bank);

TO：

setContentView(R.layout.activity_main.xml);

注意：

activity_main.xml 是上述两个代码之间的唯一区别。
这是一个常见错误，但我们都必须从中吸取教训。了解有关布局的更多信息。这是制作Android应用程序的关键知识。
您发布了 2个不同的activity_main.xml 文件。他们至少应该是相似的。否则你可能会非常困惑。

Answer 2

您的活动正在尝试对布局进行充气，然后将片段放入其中以代替视图detail_container。 detail_container在该布局中不存在 - 要么您忘记添加它，要么您正在给错误的东西充气。我注意到你正在为片段和主要活动夸大R.layout.fragment_wc_bank，我猜你是在为活动中的错误布局膨胀。

Android - 没有找到片段的视图

2 个答案: