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我终于让我的onListItemClick正常工作，但现在好像我设置为传递到下一个活动的数据没有经过但活动仍然开始。我的应用程序不会崩溃或任何它只是加载的活动，但我已设置的数据似乎并没有在那里。我试图删除滚动视图，但数据似乎仍然没有通过。未将数据从列表视图传递到活动
public class ListView extends ListActivity {
ArrayList<HashMap<String, String>> questionList;
final String TAG_RESULTS = "results";
final String TAG_QUESTION_SUBJECT = "Subject";
final String TAG_QUESTION_NUMANSWERS = "NumAnswers";
final String TAG_QUESTION = "question";
final String TAG_QUESTION_CONTENT = "Content";
final String TAG_QUESTION_CHOSENANSWER = "ChosenAnswer";
final String TAG_ANSWERS = "Answers";
final String TAG_ANSWER = "Answer";
final String TAG_ANSWERS_CONTENT = "content";
final String TAG_QUERY = "query";
JSONArray question = null;
android.widget.ListView lv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.listview);
questionList = new ArrayList<HashMap<String, String>>();
new LoadAllData().execute();
}
@Override
protected void onListItemClick(android.widget.ListView l, View v, int pos, long id) {
super.onListItemClick(l, v, pos, id);
String Subject = ((TextView) v.findViewById(R.id.Subject)).getText().toString();
String Content = ((TextView) v.findViewById(R.id.Content)).getText().toString();
String ChosenAnswer = ((TextView) v.findViewById(R.id.ChosenAnswer)).getText().toString();
Intent i = new Intent(ListView.this, SingleListItem.class);
i.putExtra(TAG_QUESTION_SUBJECT, Subject);
i.putExtra(TAG_QUESTION_CONTENT, Content);
i.putExtra(TAG_QUESTION_CHOSENANSWER, ChosenAnswer);
startActivity(i);
}
class LoadAllData extends AsyncTask<String, String, String> {
private Dialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
ProgressDialog pDialog;
pDialog = new ProgressDialog(ListView.this);
pDialog.setMessage("Loading Data. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
if (pDialog != null && pDialog.isShowing()) pDialog.dismiss();
}
protected String doInBackground(String... args) {
try {
Intent in = getIntent();
String searchTerm = in.getStringExtra("TAG_SEARCH");
String query = URLEncoder.encode(searchTerm, "utf-8");
String URL = "http://example.com";
JSONParsser jParser = new JSONParsser();
JSONObject json = jParser.readJSONFeed(URL);
try {
//question = json.getJSONArray(TAG_QUESTION);
JSONArray questions = json.getJSONObject("all").getJSONArray("questions");
for(int i = 0; i < questions.length(); i++) {
JSONObject question = questions.getJSONObject(i);
String Subject = question.getString(TAG_QUESTION_SUBJECT);
String NumAnswers = question.getString(TAG_QUESTION_NUMANSWERS);
String ChosenAnswer = question.getString(TAG_QUESTION_CHOSENANSWER);
String Content = question.getString(TAG_QUESTION_CONTENT);
//JSONArray Answers = question.getJSONObject(TAG_ANSWERS).getJSONArray(TAG_ANSWER);
//JSONObject Answer = Answers.getJSONObject(0);
//String Content = Answer.getString(TAG_ANSWERS_CONTENT);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_QUESTION_SUBJECT, Subject);
map.put(TAG_QUESTION_NUMANSWERS, NumAnswers);
map.put(TAG_QUESTION_CONTENT, Content);
map.put(TAG_QUESTION_CHOSENANSWER, ChosenAnswer);
questionList.add(map);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return TAG_QUESTION ;
}
@Override
protected void onPostExecute(String file_URL) {
ListAdapter adapter = new SimpleAdapter(getBaseContext(), questionList,
R.layout.listelements,
new String[] { TAG_QUESTION_SUBJECT, TAG_QUESTION_NUMANSWERS }, new int[] {
R.id.Subject, R.id.NumAnswers });
setListAdapter(adapter);
}}}
SingleListItem活动：
public class SingleListItem extends Activity {
TextView title;
TextView question;
TextView bestanswer;
TextView subject;
TextView content;
TextView chosenanswer;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.singlelistitem);
title = (TextView) findViewById(R.id.Title1);
question = (TextView) findViewById(R.id.Question1);
bestanswer = (TextView) findViewById(R.id.BestAnswer1);
subject = (TextView) findViewById(R.id.Subject1);
content = (TextView) findViewById(R.id.Content1);
chosenanswer = (TextView) findViewById(R.id.ChosenAnswer1);
Intent i = getIntent();
String Subject = i.getStringExtra("TAG_QUESTION_SUBJECT");
String Content = i.getStringExtra("TAG_QUESTION_CONTENT");
String ChosenAnswer = i.getStringExtra("TAG_QUESTION_CHOSENANSWER");
subject.setText(Subject);
content.setText(Content);
chosenanswer.setText(ChosenAnswer);
}
}
singlelistitem.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/Title1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title:"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/Subject1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.00"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/Question1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Question:"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/Content1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.01"
android:textAppearance="?android:attr/textAppearanceSmall" />
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ScrollView>
<TextView
android:id="@+id/BestAnswer1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Best Answer:"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/ChosenAnswer1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.01"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
你的钥匙不一样 – Raghunandan