我目前正在开发一个 Android 项目，但遇到了一个特定错误。我遇到的错误是窗口泄漏错误。我唯一能想到的就是导致这个问题的原因是我的项目布局，或者它是否是 ListView 活动，但我真的不确定，因为我以前从未见过这个错误。所以我只是希望有人能告诉我是什么导致了这个错误以及我能做些什么来修复它。
07-29 13:43:59.891: E/WindowManager(952): Activity com.theproblemsolver.ListView has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d0f620 V.E..... R.....ID 0,0-234,72} that was originally added here
07-29 13:43:59.891: E/WindowManager(952): android.view.WindowLeaked: Activity com.theproblemsolver.ListView has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d0f620 V.E..... R.....ID 0,0-234,72} that was originally added here
07-29 13:43:59.891: E/WindowManager(952): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
07-29 13:43:59.891: E/WindowManager(952): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
07-29 13:43:59.891: E/WindowManager(952): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
07-29 13:43:59.891: E/WindowManager(952): at android.app.Dialog.show(Dialog.java:281)
07-29 13:43:59.891: E/WindowManager(952): at com.theproblemsolver.ListView$LoadAllData.onPreExecute(ListView.java:86)
07-29 13:43:59.891: E/WindowManager(952): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
07-29 13:43:59.891: E/WindowManager(952): at android.os.AsyncTask.execute(AsyncTask.java:534)
07-29 13:43:59.891: E/WindowManager(952): at com.theproblemsolver.ListView.onCreate(ListView.java:52)
07-29 13:43:59.891: E/WindowManager(952): at android.app.Activity.performCreate(Activity.java:5104)
07-29 13:43:59.891: E/WindowManager(952): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
07-29 13:43:59.891: E/WindowManager(952): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
07-29 13:43:59.891: E/WindowManager(952): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
07-29 13:43:59.891: E/WindowManager(952): at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-29 13:43:59.891: E/WindowManager(952): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-29 13:43:59.891: E/WindowManager(952): at android.os.Handler.dispatchMessage(Handler.java:99)
07-29 13:43:59.891: E/WindowManager(952): at android.os.Looper.loop(Looper.java:137)
07-29 13:43:59.891: E/WindowManager(952): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-29 13:43:59.891: E/WindowManager(952): at java.lang.reflect.Method.invokeNative(Native Method)
07-29 13:43:59.891: E/WindowManager(952): at java.lang.reflect.Method.invoke(Method.java:511)
07-29 13:43:59.891: E/WindowManager(952): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-29 13:43:59.891: E/WindowManager(952): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-29 13:43:59.891: E/WindowManager(952): at dalvik.system.NativeStart.main(Native Method)
列表显示：
public class ListView extends ListActivity {
private ProgressDialog pDialog;
JSONParsser jParser = new JSONParsser();
ArrayList<HashMap<String, String>> questionList;
private static String URI = "http://example.com/json";;
//JSONObject json = jParser.getJSONFromURI(URI);
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";
JSONArray Question = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.listview);
//questionList = new ArrayList<HashMap<String, String>>();
android.widget.ListView lv = getListView();
new LoadAllData().execute();
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == 100) {
Intent intent = getIntent();
startActivity(intent);
finish();
}
}
class LoadAllData extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ListView.this);
pDialog.setMessage("Loading Data. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
//JSONParsser jParser = new JSONParsser();
}
protected String doInBackground(String... args) {
JSONObject json = jParser.getJSONFromURI(URI);
try {
Question = json.getJSONArray(TAG_QUESTION);
for(int i = 0; i < Question.length(); i++) {
JSONObject q = Question.getJSONObject(i);
String Subject = q.getString(TAG_QUESTION_SUBJECT);
String NumAnswers = q.getString(TAG_QUESTION_NUMANSWERS);
String ChosenAnswers = q.getString(TAG_QUESTION_CHOSENANSWER);
String Content = q.getString(TAG_QUESTION_CONTENT);
JSONObject Answers = q.getJSONObject(TAG_ANSWERS);
String Answer = Answers.getString(TAG_ANSWER);
questionList = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_QUESTION_SUBJECT, Subject);
map.put(TAG_QUESTION_NUMANSWERS, NumAnswers);
questionList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String file_URI) {
if (pDialog != null && pDialog.isShowing()) pDialog.dismiss();
runOnUiThread(new Runnable() {
public void run() {
ListAdapter adapter = new SimpleAdapter(getBaseContext(), questionList,
R.layout.row,
new String[] { TAG_QUESTION_SUBJECT, TAG_QUESTION_NUMANSWERS }, new int[] {
R.id.Subject, R.id.NumAnswers });
setListAdapter(adapter);
}
});
}
}}
Row.xml 布局
<?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" >
<TextView
android:id="@+id/Subject"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/NumAnswers"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>