Android的ListView控件窗口泄漏错误 [英] Android ListView window leak error
问题描述
我有一点我的手的问题,我将需要一点点。我的应用程序总是崩溃,当我看堆栈跟踪这是我回来...
theproblemsolver.ListView渗漏窗口com.android.internal.policy.impl.PhoneWindow $ {DecorView VE 40d0e800 .... - [R ..... ID 0,0-234 72},最初这里加入
11月7日至27日:05:56.119:E /窗口管理器(913):android.view.WindowLeaked:活动com.theproblemsolver.ListView渗漏窗口com.android.internal.policy.impl.PhoneWindow $ {DecorView VE 40d0e800 ... :R ..... ID 0,0-234,72},最初这里加入
11月7日至27日:05:56.119:E /窗口管理器(913):在android.view.ViewRootImpl<&初始化GT;(ViewRootImpl.java:354)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.Dialog.show(Dialog.java:281)
11月7日至27日:05:56.119:E /窗口管理器(913):在com.theproblemsolver.ListView $ LoadAllData.on preExecute(ListView.java:85)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.os.AsyncTask.execute(AsyncTask.java:534)
11月7日至27日:05:56.119:E /窗口管理器(913):在com.theproblemsolver.ListView.onCreate(ListView.java:52)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.Activity.performCreate(Activity.java:5104)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
27 11:05:56.119:E /窗口管理器(913):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.ActivityThread.access $ 600(ActivityThread.java:141)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1234)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.os.Handler.dispatchMessage(Handler.java:99)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.os.Looper.loop(Looper.java:137)
11月7日至27日:05:56.119:E /窗口管理器(913):在android.app.ActivityThread.main(ActivityThread.java:5041)
11月7日至27日:05:56.119:E /窗口管理器(913):在java.lang.reflect.Method.invokeNative(本机方法)
11月7日至27日:05:56.119:E /窗口管理器(913):在java.lang.reflect.Method.invoke(Method.java:511)
11月7日至27日:05:56.119:E /窗口管理器(913):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:793)
11月7日至27日:05:56.119:E /窗口管理器(913):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
11月7日至27日:05:56.119:E /窗口管理器(913):在dalvik.system.NativeStart.main(本机方法)
谁能告诉我这是什么,我能做些什么来解决这个问题。
MainActivity
公共类MainActivity延伸活动{ 的EditText等;
按钮的getAnswer; @覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main); 按钮的getAnswer =(按钮)findViewById(R.id.button1);
getanswer.setOnClickListener(新OnClickListener(){ @覆盖
公共无效的onClick(视图v){
意图I =新意图(MainActivity.this,ListView.class);
startActivity(ⅰ);
}
});
}
}
的ListView活动
公共类ListView的扩展ListActivity { 私人ProgressDialog pDialog; JSONParsser jParser =新JSONParsser();
ArrayList的<&HashMap的LT;字符串,字符串>> questionList; 私人静态字符串URI =http://example.com/json;; // JSONObject的JSON = jParser.getJSONFromURI(URI); 最后弦乐TAG_RESULTS =ResultsSet;
最后弦乐TAG_SUBJECT =主题;
最后弦乐TAG_NUMANSWERS =NumAnswers;
最后弦乐TAG_QUESTION =问题;
最后弦乐TAG_QUESTION_CONTENT =内容;
最后弦乐TAG_QUESTION_CHOSENANSWER =ChosenAnswer;
最后弦乐TAG_QUESTION_ANSWERS =答案; JSONArray ResultsSet = NULL;
@覆盖
公共无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
//setContentView(R.layout.listview); questionList =新的ArrayList<&HashMap的LT;字符串,字符串>>(); android.widget.ListView LV = getListView(); 新LoadAllData()执行(); lv.setOnItemClickListener(新OnItemClickListener(){ @覆盖
公共无效onItemClick(适配器视图<>母公司,观景,INT位置,长的id){
}
});} @覆盖
保护无效的onActivityResult(INT申请code,INT结果code,意图数据){
super.onActivityResult(要求code,结果code,数据); 如果(结果code == 100){
意向意图= getIntent();
完();
startActivity(意向);
}
} 类LoadAllData扩展的AsyncTask<字符串,字符串,字符串> { @覆盖
在preExecute保护无效(){
super.on preExecute();
pDialog =新ProgressDialog(ListView.this);
pDialog.setMessage(加载数据请稍候...);
pDialog.setIndeterminate(假);
pDialog.setCancelable(假);
pDialog.show();
} 保护字符串doInBackground(字符串参数... args){ 尝试{
JSONObject的JSON = jParser.getJSONFromURI(URI);
ResultsSet = json.getJSONArray(TAG_RESULTS); 的for(int i = 0; I< ResultsSet.length();我++){
的JSONObject R = ResultsSet.getJSONObject(ⅰ);
字符串主题= r.getString(TAG_SUBJECT);
字符串NumAnswers = r.getString(TAG_NUMANSWERS); JSONObject的问题= r.getJSONObject(TAG_QUESTION);
字符串内容= Question.getString(TAG_QUESTION_CONTENT);
字符串ChosenAnswer = Question.getString(TAG_QUESTION_CHOSENANSWER);
字符串答案= Question.getString(TAG_QUESTION_ANSWERS); HashMap的<字符串,字符串>地图=新的HashMap<字符串,字符串>(); map.put(TAG_SUBJECT,主题);
map.put(TAG_NUMANSWERS,NumAnswers);
} }赶上(JSONException E){
e.printStackTrace();
}
返回null;
}
保护无效onPostExecute(字符串file_URI){ pDialog.dismiss();
runOnUiThread(新的Runnable(){
公共无效的run(){
ListAdapter适配器=新SimpleAdapter(getBaseContext(),questionList,
R.layout.row,
新的String [] {TAG_SUBJECT,TAG_NUMANSWERS},新的INT [] {
R.id.Subject,R.id.NumAnswers}); setListAdapter(适配器); }
}); }
}}
SimpleListItem
公共类SingleListItem延伸活动{ TextView的主题; @覆盖
公共无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
this.setContentView(R.layout.singlelistitem); 主题=(的TextView)findViewById(R.id.Subject2); 意向I = getIntent();
字符串主题= i.getStringExtra(TAG_SUBJECT);
subject.setText(一级学科); }
}
我把两个活动是在我的项目,我没有张贴的原因是因为我不知道他们是否重要与否
JSONParsser活动
公共类JSONParsser { 静态InputStream为= NULL;
静态的JSONObject jObj = NULL;
静态JSON字符串=;
的EditText等; 公共JSONParsser(){
} 公众的JSONObject getJSONFromURI(字符串URI){ 尝试{
HttpClient的客户端=新DefaultHttpClient();
尝试{
URI网站=新的URI(http://example.com/json);
HTTPGET请求=新HTTPGET();
request.setURI(网站);
尝试{
HTT presponse响应= client.execute(请求);
HttpEntity httpEntity = response.getEntity();
是= httpEntity.getContent(); }赶上(ClientProtocolException E){
// TODO自动生成catch块
e.printStackTrace();
}赶上(IOException异常五){
// TODO自动生成catch块
e.printStackTrace();
}
}赶上(的URISyntaxException E){
// TODO自动生成catch块
e.printStackTrace();
}
返回jObj; }最后{} } { }}
InstanceOfJSONParsser活动
公共类JSONParserInstance { JSONParsser jParser =新JSONParsser(); 公共字符串URI; JSONObject的JSON = jParser.getJSONFromURI(URI);
私有静态最后弦乐TAG_RESULTS =ResultsSet;
私有静态最后弦乐TAG_SUBJECT =主题;
私有静态最后弦乐TAG_NUMANSWERS =NumAnswers;
私有静态最后弦乐TAG_QUESTION =问题;
私有静态最后弦乐TAG_QUESTION_CONTENT =内容;
私有静态最后弦乐TAG_QUESTION_CHOSENANSWER =ChosenAnswer;
私有静态最后弦乐TAG_QUESTION_ANSWERS =答案; JSONArray ResultsSet = NULL; { 尝试{
ResultsSet = json.getJSONArray(TAG_RESULTS); 的for(int i = 0; I< ResultsSet.length();我++){
的JSONObject R = ResultsSet.getJSONObject(ⅰ); 字符串主题= r.getString(TAG_SUBJECT);
字符串NmAnswers = r.getString(TAG_NUMANSWERS); JSONObject的问题= r.getJSONObject(TAG_QUESTION);
字符串内容= Question.getString(TAG_QUESTION_CONTENT);
字符串ChosenAnswer = Question.getString(TAG_QUESTION_CHOSENANSWER);
字符串答案= Question.getString(TAG_QUESTION_ANSWERS); }
}赶上(JSONException E){
e.printStackTrace();}}}
看来你的AsyncTask具有很强的参考你的活动。请考虑使用静态类与WeakReference的替代。
私有静态类StaticAsyncTask扩展的AsyncTask<字符串,字符串,字符串>(){
私人的WeakReference<活性GT; mActivityRef; 私人StaticAsyncTask(活动callingActivity){
mActivityRef =新的WeakReference<活性GT;(callingActivity);
} @覆盖
保护字符串doInBackground(字符串参数... args){
// TODO:做的东西
} @覆盖
保护无效onProgressUpdate(字符串...进度){
// TODO:做的东西
} @覆盖
保护无效onPostExecute(字符串结果){
活动活动= mActivityRef.get();
如果(活动!= NULL){
// TODO:做的东西与我的非空活动
}
}
}
I am having a bit of a problem on my hands and I'm going to need a little. My app keeps crashing and when I look at the stacktrace this is what I get back...
theproblemsolver.ListView has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d0e800 V.E..... R.....ID 0,0-234,72} that was originally added here
07-27 11:05:56.119: E/WindowManager(913): android.view.WindowLeaked: Activity com.theproblemsolver.ListView has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d0e800 V.E..... R.....ID 0,0-234,72} that was originally added here
07-27 11:05:56.119: E/WindowManager(913): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
07-27 11:05:56.119: E/WindowManager(913): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
07-27 11:05:56.119: E/WindowManager(913): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
07-27 11:05:56.119: E/WindowManager(913): at android.app.Dialog.show(Dialog.java:281)
07-27 11:05:56.119: E/WindowManager(913): at com.theproblemsolver.ListView$LoadAllData.onPreExecute(ListView.java:85)
07-27 11:05:56.119: E/WindowManager(913): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
07-27 11:05:56.119: E/WindowManager(913): at android.os.AsyncTask.execute(AsyncTask.java:534)
07-27 11:05:56.119: E/WindowManager(913): at com.theproblemsolver.ListView.onCreate(ListView.java:52)
07-27 11:05:56.119: E/WindowManager(913): at android.app.Activity.performCreate(Activity.java:5104)
07-27 11:05:56.119: E/WindowManager(913): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
27 11:05:56.119: E/WindowManager(913): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
07-27 11:05:56.119: E/WindowManager(913): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
07-27 11:05:56.119: E/WindowManager(913): at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-27 11:05:56.119: E/WindowManager(913): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-27 11:05:56.119: E/WindowManager(913): at android.os.Handler.dispatchMessage(Handler.java:99)
07-27 11:05:56.119: E/WindowManager(913): at android.os.Looper.loop(Looper.java:137)
07-27 11:05:56.119: E/WindowManager(913): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-27 11:05:56.119: E/WindowManager(913): at java.lang.reflect.Method.invokeNative(Native Method)
07-27 11:05:56.119: E/WindowManager(913): at java.lang.reflect.Method.invoke(Method.java:511)
07-27 11:05:56.119: E/WindowManager(913): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-27 11:05:56.119: E/WindowManager(913): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-27 11:05:56.119: E/WindowManager(913): at dalvik.system.NativeStart.main(Native Method)
Can somebody please tell me what this is and what I can do to fix this..
MainActivity
public class MainActivity extends Activity {
EditText et;
Button getanswer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button getanswer = (Button) findViewById(R.id.button1);
getanswer.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this, ListView.class);
startActivity(i);
}
});
}
}
ListView Activity
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_RESULTS = "ResultsSet";
final String TAG_SUBJECT = "Subject";
final String TAG_NUMANSWERS = "NumAnswers";
final String TAG_QUESTION = "Question";
final String TAG_QUESTION_CONTENT = "Content";
final String TAG_QUESTION_CHOSENANSWER = "ChosenAnswer";
final String TAG_QUESTION_ANSWERS = "Answers";
JSONArray ResultsSet = 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();
finish();
startActivity(intent);
}
}
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();
}
protected String doInBackground(String... args) {
try {
JSONObject json = jParser.getJSONFromURI(URI);
ResultsSet = json.getJSONArray(TAG_RESULTS);
for(int i = 0; i < ResultsSet.length(); i++) {
JSONObject r = ResultsSet.getJSONObject(i);
String Subject = r.getString(TAG_SUBJECT);
String NumAnswers = r.getString(TAG_NUMANSWERS);
JSONObject Question = r.getJSONObject(TAG_QUESTION);
String Content = Question.getString(TAG_QUESTION_CONTENT);
String ChosenAnswer = Question.getString(TAG_QUESTION_CHOSENANSWER);
String Answers = Question.getString(TAG_QUESTION_ANSWERS);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_SUBJECT, Subject);
map.put(TAG_NUMANSWERS, NumAnswers);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_URI) {
pDialog.dismiss();
runOnUiThread(new Runnable() {
public void run() {
ListAdapter adapter = new SimpleAdapter(getBaseContext(), questionList,
R.layout.row,
new String[] { TAG_SUBJECT, TAG_NUMANSWERS }, new int[] {
R.id.Subject, R.id.NumAnswers });
setListAdapter(adapter);
}
});
}
}}
SimpleListItem
public class SingleListItem extends Activity {
TextView subject;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.singlelistitem);
subject = (TextView) findViewById(R.id.Subject2);
Intent i = getIntent();
String Subject = i.getStringExtra("TAG_SUBJECT");
subject.setText(Subject);
}
}
I'm putting in two Activities that's in my project and the reason I didn't post them is because I didn't know if they are important or not
JSONParsser Activity
public class JSONParsser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
EditText et;
public JSONParsser () {
}
public JSONObject getJSONFromURI(String URI) {
try{
HttpClient client = new DefaultHttpClient();
try {
URI website = new URI("http://example.com/json");
HttpGet request = new HttpGet();
request.setURI(website);
try {
HttpResponse response = client.execute(request);
HttpEntity httpEntity = response.getEntity();
is = httpEntity.getContent();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jObj;
}finally{}
}{
}}
InstanceOfJSONParsser Activity
public class JSONParserInstance {
JSONParsser jParser = new JSONParsser();
public String URI;
JSONObject json = jParser.getJSONFromURI(URI);
private static final String TAG_RESULTS = "ResultsSet";
private static final String TAG_SUBJECT = "Subject";
private static final String TAG_NUMANSWERS = "NumAnswers";
private static final String TAG_QUESTION = "Question";
private static final String TAG_QUESTION_CONTENT = "Content";
private static final String TAG_QUESTION_CHOSENANSWER = "ChosenAnswer";
private static final String TAG_QUESTION_ANSWERS = "Answers";
JSONArray ResultsSet = null; {
try {
ResultsSet = json.getJSONArray(TAG_RESULTS);
for(int i = 0; i < ResultsSet.length(); i++){
JSONObject r = ResultsSet.getJSONObject(i);
String Subject = r.getString(TAG_SUBJECT);
String NmAnswers = r.getString(TAG_NUMANSWERS);
JSONObject Question = r.getJSONObject(TAG_QUESTION);
String Content = Question.getString(TAG_QUESTION_CONTENT);
String ChosenAnswer = Question.getString(TAG_QUESTION_CHOSENANSWER);
String Answers = Question.getString(TAG_QUESTION_ANSWERS);
}
} catch (JSONException e) {
e.printStackTrace();
}}}
It appears that your AsyncTask has a strong reference to your Activity. Please consider using a static class with a WeakReference instead.
private static class StaticAsyncTask extends AsyncTask<String, String, String>() {
private WeakReference<Activity> mActivityRef;
private StaticAsyncTask(Activity callingActivity) {
mActivityRef = new WeakReference<Activity>(callingActivity);
}
@Override
protected String doInBackground(String... args) {
// TODO: Do stuff
}
@Override
protected void onProgressUpdate(String... progress) {
// TODO: Do stuff
}
@Override
protected void onPostExecute(String results) {
Activity activity = mActivityRef.get();
if (activity != null) {
// TODO: Do stuff with my non-null activity
}
}
}
这篇关于Android的ListView控件窗口泄漏错误的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!