列表视图和数组适配器不起作用？所有数据都显示在一行列表中

时间：2015-07-19 12:25:48

标签： android arraylist android-listview android-arrayadapter

我是android的新手，我正在尝试使用数组适配器，运行方法和多线程创建列表视图。该列表将数组列表中的所有数据显示为单行。

我的MainActivity看起来像这样：

    public class MainActivity extends FragmentActivity implements OnClickListener{

    private Spinner mSpinnerAPI;
    private Button mButtonSubmit;
    private ProgressBar mProgressRequest;
    private ListView mEditTextResponse;
..
    ArrayList<StorylineData> storylineData;

    ArrayList<SummaryData> summary;

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

        mSpinnerAPI = (Spinner) findViewById(R.id.spinnerAPI);
        mButtonSubmit = (Button) findViewById(R.id.buttonSubmit);
        mEditTextResponse = (ListView) findViewById(R.id.editResponse);
        mProgressRequest = (ProgressBar) findViewById(R.id.progressRequest);

        mButtonSubmit.setOnClickListener(this);

  ...

    @Override
    public void onClick(View v) {
        toggleProgress(true);
        switch (mSpinnerAPI.getSelectedItemPosition()) {
            case 0: // Authenticate
              ...
            case 4: // Get Summary Day
                MovesAPI.getSummary_SingleDay(summaryHandler, "20150418", null);//Date changed to "20150117"
                break;
          ...
            case 10: // Get Storyline Day
                MovesAPI.getStoryline_SingleDay(storylineHandler, "20150418", "20140714T073812Z", false);//Date changed to "20150418" "null changed to"20140714T073812Z"
                break;
          ...
                toggleProgress(false);
                break;
        }

    }

   ...

    private MovesHandler<ArrayList<SummaryListData>> summaryHandler = new MovesHandler<ArrayList<SummaryListData>>() {
        @Override
        public void onSuccess(ArrayList<SummaryListData> result) {
            toggleProgress(false);
            updateResponse("Summary Items : " + result.get(0)
                              + "Something: " + result.toString()
                           // + result.add(result.getSummaries().toString())
                            + "Something: " + result.toString()
            );
        }

     ...

    private MovesHandler<ArrayList<StorylineData>> storylineHandler = new MovesHandler<ArrayList<StorylineData>>() {

        @Override
        public void onSuccess(ArrayList<StorylineData> result) {
            toggleProgress(false);
                 updateResponse(
                           "Date:\t" + result.get(0).getDate() + "\n"
                           + "-----------Activity 1 Summary--------\t" + "\n"
                           + "Activity:\t" + result.get(0).getActivity().toString() + "\n"//returns 1587 with .getCaloriesIdle()
                      ...
                           + "-----------Activity 2 Summary---------\t" + "\n"
                           + "Activity:\t" + result.get(0).getSummary().get(0).getActivity() + "\n"//returns 1587 with .getCaloriesIdle()
 ...


 + "-----------Segments---------\t" + "\n"
                           + "Type:\t" + result.get(0).getSegments().get(0).getType() + "\n"//returns 1587 with .getCaloriesIdle()

...
        }

        @Override
        public void onFailure(MovesStatus status, String message) {
            toggleProgress(false);
            updateResponse("Request Failed! \n"
                    + "Status Code : " + status + "\n"
                    + "Status Message : " + message + "\n\n"
                    + "Specific Message : " + status.getStatusMessage());
        }
    };

    public void toggleProgress(final boolean isProgrressing) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                mProgressRequest.setVisibility(isProgrressing ? View.VISIBLE : View.GONE);
                mButtonSubmit.setVisibility(isProgrressing ? View.GONE : View.VISIBLE);
            }
        });
    }

    public void updateResponse(final String message) {
        MainActivity.this.runOnUiThread(new Runnable() {


            @Override
            public void run() {
                mButtonSubmit.setText(message);

                StorylineAdapter adapter = new StorylineAdapter(MainActivity.this, R.layout.item_storyline, storylineData);
                mEditTextResponse.setAdapter(adapter);


            }
        });
    }
}

我的ArrayAdapter类如下所示：

public class StorylineAdapter extends ArrayAdapter<SummaryData>{
    private Context context;
    private Runnable runnable;
private ArrayList<StorylineData> storylineData;

public StorylineAdapter(Context context, int resource, ArrayList<SummaryData> objects) {
    super(context, resource, objects);
    this.context = context;
    this.runnable = runnable;
    this.summary = objects;
}



@Override
public View getView(int position, View convertView, ViewGroup parent){

LayoutInflater inflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.item_storyline, parent, false);


//Display in the TextView widget
SummaryData summary1 = summary.get(position);
TextView tv = (TextView) view.findViewById(R.id.textView1);
tv.setText(summary1.getActivity());

return view;
}
}

这是我的解析器类：

public class StorylineData extends ArrayList<StorylineData> {

...Getters/Setters...

/** ******************* Parser methods    

/**
 * Parse a {@link org.json.JSONObject} from storyline {@link org.json.JSONArray}, then return the corresponding {@link StorylineData} object.
 *
 * @param jsonObject : the storyline JSON object received from server
 * @return corresponding {@link StorylineData}
 */
public static StorylineData parse(JSONObject jsonObject) throws JSONException {
    if (jsonObject != null) {

        StorylineData storylineData = new StorylineData();


        storylineData.date = jsonObject.optString("date");
        storylineData.caloriesIdle = jsonObject.optInt("caloriesIdle");
        storylineData.lastUpdate = jsonObject.optString("lastUpdate");
        storylineData.summary = new ArrayList<SummaryData>();
        storylineData.segments = new ArrayList<SegmentData>();



        /**Get the data associated with the array named summary **To get a specific JSONArray: Summary*/
        JSONArray summariesJsonArray = jsonObject.optJSONArray("summary");

        if (summariesJsonArray != null)
        for (int i = 0; i < summariesJsonArray.length(); i++) {


            /**each time through array will need to get a reference of current object*/
            JSONObject summaryJsonObject = summariesJsonArray.optJSONObject(i);//declare instance of class object ob //array object called getJSONObject //passin indexvalu of (i)

                    if (summaryJsonObject != null) {
                    /**===============Translate data from json to Java=================*/
                        /**Create a new OBJECT OF ARRAY STORYLINE/SUMMARY*/
                        ArrayList<SummaryData> summary = new ArrayList<SummaryData>(); // initialisation must be outside the loop
                        storylineData.setSummary(summary);

                        /**Get summary from json into java*/
                        summariesJsonArray.getJSONObject(i).getString("distance");

                        /**Get date from json into java*/
                        String date = summaryJsonObject.optString("date");
                        storylineData.setDate(date);

                        /**Get group from json into java*/
                        String group = summaryJsonObject.optString("group");//Get name using key e.g. date
                        storylineData.setGroup(group);

               ...


                        storylineData.summary.add(SummaryData.parse(summaryJsonObject));
                        Log.d("StorylineDataCls \t sJo", summaryJsonObject.toString() + "Log\n");
                        System.out.println("print distance" + summariesJsonArray.getJSONObject(i).getString("distance"));
                        System.out.println("print summary" + summaryJsonObject);


                }
            }

        JSONArray segmentsJsonArray = jsonObject.optJSONArray("segments");
        if (segmentsJsonArray != null) {

            for (int i = 0; i < segmentsJsonArray.length(); i++) {
                JSONObject segment = segmentsJsonArray.optJSONObject(i);

                if (segment != null) {

                    ArrayList<SegmentData> segments = new ArrayList<SegmentData>(); // initialisation must be outside the loop
                    storylineData.setSegments(segments);

                    String type = segment.optString("type");
                    storylineData.setType(type);

                  ...

                    storylineData.segments.add(SegmentData.parse(segment));


                    Log.d("StorylineDataCls \t sSo", segment.toString());

                }
            }
        }
        return storylineData;
    }
    return null;


}


}

我想知道这些项目出现在一行中的原因是否可能是因为布局文件中存在问题？

Main Layout:

<RelativeLayout 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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".StartScreen">

<Spinner
        android:id="@+id/spinnerAPI"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:entries="@array/API_Names"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

    <Button
        android:id="@+id/buttonSubmit"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Get Data"
        android:layout_below="@+id/spinnerAPI"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ProgressBar
        android:id="@+id/progressRequest"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ListView
        android:layout_width="match_parent"

        android:id="@+id/editResponse"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textColor="#F8F8FF"
        android:textSize="20sp"
       />

    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listView"
        android:layout_alignRight="@+id/editResponse"
        android:layout_alignEnd="@+id/editResponse"
        android:layout_below="@+id/buttonSubmit"  />


Item Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_centerVertical="true"
        android:text="@string/flower_name_placeholder"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

enter image description here

2 个答案:

答案 0 :(得分：0)

尝试以下代码。你应该在storylineData中存储和使用

public class StorylineAdapter extends ArrayAdapter<SummaryData>{
    private Context context;
private ArrayList<StorylineData> storylineData;

    public StorylineAdapter(Context context, int resource, ArrayList<SummaryData> objects) {
        super(context, resource, objects);
        this.context = context;
        this.storylineData = objects;
    }



    @Override
    public View getView(int position, View convertView, ViewGroup parent){

    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.item_storyline, parent, false);


    /*LayoutInflater inflater =
            (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.item_storyline, parent, false);
    */

    //Display in the TextView widget
    SummaryData summary1 = storylineData.get(position);
    TextView tv = (TextView) view.findViewById(R.id.textView1);
    tv.setText(summary1.getActivity());

    return view;
  }
}

答案 1 :(得分：0)

我必须通过添加数组适配器在MainActivity中编辑以下方法。

public void updateResponse(final String message) {
            runOnUiThread(new Runnable() {

                //MainActivity.this.runOnUiThread(new Runnable() {

                @Override
                public void run() {

                    ListView mListView = (ListView) findViewById(R.id.list_view);

                    String[] stringArray = message.split("\n");

                    // This is the array adapter, it takes the context of the activity as a
                    // first parameter, the type of list view as a second parameter and your
                    // array as a third parameter.
                    ArrayAdapter<String> adapter = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_list_item_1, stringArray);
                    mListView.setAdapter(adapter);
                }
            });
        }
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