列表视图和数组适配器不工作？所有数据都显示在列表的一行中
列表视图和数组适配器不工作？所有数据都显示在列表的一行中
提问于 2015-07-19 20:25:48
我是android的新手，我正在尝试使用数组适配器、run方法和多线程创建一个列表视图。该列表将数组列表中的所有数据显示为一行。
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;
}
}下面是我的解析器类：
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的问题？
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>
回答 2
Stack Overflow用户
发布于 2015-07-19 20:48:35
尝试以下代码。您应该在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;
}
}Stack Overflow用户
发布于 2015-11-08 01:22:37
我必须在我的MainActivity中通过添加数组适配器来编辑以下方法。
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);
}
});
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/31501176
复制相关文章
相似问题
腾讯云开发者
