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我終於讓我的onListItemClick正常工作，但現在好像我設置爲傳遞到下一個活動的數據沒有經過但活動仍然開始。我的應用程序不會崩潰或任何它只是加載的活動，但我已設置的數據似乎並沒有在那裏。我試圖刪除滾動視圖，但數據似乎仍然沒有通過。未將數據從列表視圖傳遞到活動
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活動：
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>
你的鑰匙不一樣 – Raghunandan