Android BaseAdapter

Question

我是刚接触Android的人，所以如果我完全搞砸了这件事，我很抱歉。

在过去的一周里，我一直在玩listview和past适配器，我无法让它在我的生活中发挥作用。

我得到的新错误是：

 01-26 14:22:03.979: E/AndroidRuntime(3449): FATAL EXCEPTION: main
01-26 14:22:03.979: E/AndroidRuntime(3449): Process: com.example.coreoffice, PID: 3449
01-26 14:22:03.979: E/AndroidRuntime(3449): android.content.res.Resources$NotFoundException: String resource ID #0x1
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.content.res.Resources.getText(Resources.java:244)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.TextView.setText(TextView.java:3888)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at com.example.coreoffice.HomeFragment$dataListAdapter.getView(HomeFragment.java:145)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.AbsListView.obtainView(AbsListView.java:2263)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1263)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.ListView.onMeasure(ListView.java:1175)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:719)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:455)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:651)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.View.measure(View.java:16497)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.Choreographer.doCallbacks(Choreographer.java:574)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.Choreographer.doFrame(Choreographer.java:544)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.os.Handler.handleCallback(Handler.java:733)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.os.Handler.dispatchMessage(Handler.java:95)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.os.Looper.loop(Looper.java:136)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at android.app.ActivityThread.main(ActivityThread.java:5017)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at java.lang.reflect.Method.invokeNative(Native Method)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at java.lang.reflect.Method.invoke(Method.java:515)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
01-26 14:22:03.979: E/AndroidRuntime(3449):     at dalvik.system.NativeStart.main(Native Method)

这是代码：

package com.example.coreoffice;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class HomeFragment extends Fragment {

    private int jcount = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        displayListView();
        TextView t = (TextView) getActivity().findViewById(R.id.header);
        t.setText("All Jobs (" + getCount() + ")");
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.list_jobs, container, false);

        return view;

    }

    private void displayListView() {

        // Array list of countries

        String[] Title = { "Slag Lane", "Slag lane 1", "Street1" };
        String[] Address = { "Road street", "Road Street 2", "Road street 3" };
        String[] Description = { "Description 1", "Description 2",
                "Description 3" };
        String[] PostCode = { "wa32ez", "m30oft", "wn24sx" };
        int[] JID = { 1, 2, 3 };

        setCount(JID.length);

        ListView listView = (ListView) getView().findViewById(R.id.listview);

        listView.setAdapter(new dataListAdapter(getActivity(), Title, Address,
                Description, PostCode, JID));

        // enables filtering for the contents of the given ListView
        // listView.setTextFilterEnabled(true);

        listView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1,
                    int position, long arg3) {
                goToSecondFragment(position);
            }
        });

    }

    public int getCount() {
        return jcount;
    }

    public void setCount(int jcount) {
        this.jcount = jcount;
    }

    private void goToSecondFragment(int position) {
        Fragment fragment = new PagesFragmentContent();
        Bundle bundle = new Bundle();
        bundle.putInt("ID", position);
        fragment.setArguments(bundle);
        FragmentManager fragmentManager = getFragmentManager();
        fragmentManager.beginTransaction()
                .replace(R.id.frame_container, fragment, "frag2")
                .addToBackStack("frag2").commit();
    }

    class dataListAdapter extends BaseAdapter {
        String[] Title, Address, Description, PostCode;
        int[] JID;
        Context context;

        public dataListAdapter(Context context, String[] stTitle,
                String[] stAddress, String[] stDescription,
                String[] stPostCode, int[] inJID) {
            this.context = context;
            Title = stTitle;
            Address = stAddress;
            Description = stDescription;
            PostCode = stPostCode;
            JID = inJID;

        }

        public int getCount() {
            // TODO Auto-generated method stub
            return JID.length;
        }

        public Object getItem(int arg0) {
            // TODO Auto-generated method stub
            return null;
        }

        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public View getView(int position, View view, ViewGroup viewGroup) {
            // TODO Auto-generated method stub
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View row = inflater.inflate(R.layout.list_jobs_row, null, false);

            TextView title = (TextView) row.findViewById(R.id.title);
            TextView address = (TextView) row.findViewById(R.id.address);
            TextView description = (TextView) row
                    .findViewById(R.id.description);
            TextView postcode = (TextView) row.findViewById(R.id.postcode);
            TextView jid = (TextView) row.findViewById(R.id.jid);

            title.setText(Title[position]);
            address.setText(Address[position]);
            description.setText(Description[position]);
            postcode.setText(PostCode[position]);
            jid.setText(JID[position]);

            return (row);
        }
    }

}

list_jobs_row.xml

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" 
 android:layout_width="fill_parent"
  android:layout_height="fill_parent">
  <TextView android:id="@+id/title"
  android:textSize="14sp" 
  android:textStyle="bold" 
  android:textColor="#FFFF00" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:text=""/>

 <TextView android:id="@+id/address" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:text=""/>

 <TextView android:id="@+id/description" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:text=""/>

  <TextView android:id="@+id/postcode" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:text=""/>

   <TextView android:id="@+id/jid" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:text=""/>
</LinearLayout>

Answer 1

做以下工作：

        public dataListAdapter(String[] stTitle, String[] stAddress,
                String[] stDescription, String[] stPostCode, int[] inJID , Context context)  {
         this.context=context; 
....
        }

在您的getView方法中执行以下操作：

View row = inflater.inflate(R.layout.list_jobs_row, null,
                    false);

然后执行以下操作：

jid.setText(JID[position]+"");

希望这能帮上忙。

Answer 2

context未在适配器中初始化。

Answer 3

你也需要初始化你的上下文

public dataListAdapter(Context context, String[] stTitle, String[] stAddress,
                String[] stDescription, String[] stPostCode, int[] inJID) {
   // other stuff
   this.context = context;

}


new dataListAdapter(getActivity(), Title, Address, Description,PostCode, JID)

。

jid.setText(JID[position]);

以这种方式给resourceId，您应该使它的字符串类似

  jid.setText("" + JID[position]);