我正在使用谷歌地图的Android应用程序。该应用程序最常使用。我能够在logcat [下面]中看到一些错误。
logcat的
08-28 15:37:36.945: E/WindowManager(21969): Activity com.kod.example.Find_Tab_MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40929cd8 that was originally added here
08-28 15:37:36.945: E/WindowManager(21969): android.view.WindowLeaked: Activity com.kod.example.Find_Tab_MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40929cd8 that was originally added here
08-28 15:37:36.945: E/WindowManager(21969): at android.view.ViewRoot.<init>(ViewRoot.java:263)
08-28 15:37:36.945: E/WindowManager(21969): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:171)
08-28 15:37:36.945: E/WindowManager(21969): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:114)
08-28 15:37:36.945: E/WindowManager(21969): at android.view.Window$LocalWindowManager.addView(Window.java:424)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.Dialog.show(Dialog.java:241)
08-28 15:37:36.945: E/WindowManager(21969): at com.kod.example.MyProgressDialog.show(MyProgressDialog.java:36)
08-28 15:37:36.945: E/WindowManager(21969): at com.kod.example.MyProgressDialog.show(MyProgressDialog.java:19)
08-28 15:37:36.945: E/WindowManager(21969): at com.kod.example.MyProgressDialog.show(MyProgressDialog.java:14)
08-28 15:37:36.945: E/WindowManager(21969): at com.kod.example.Find_Tab_MainActivity$LoadPlaces.onPreExecute(Find_Tab_MainActivity.java:129)
08-28 15:37:36.945: E/WindowManager(21969): at android.os.AsyncTask.execute(AsyncTask.java:391)
08-28 15:37:36.945: E/WindowManager(21969): at com.kod.example.Find_Tab_MainActivity.onCreate(Find_Tab_MainActivity.java:112)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
08-28 15:37:36.945: E/WindowManager(21969): at android.os.Handler.dispatchMessage(Handler.java:99)
08-28 15:37:36.945: E/WindowManager(21969): at android.os.Looper.loop(Looper.java:130)
08-28 15:37:36.945: E/WindowManager(21969): at android.app.ActivityThread.main(ActivityThread.java:3687)
08-28 15:37:36.945: E/WindowManager(21969): at java.lang.reflect.Method.invokeNative(Native Method)
08-28 15:37:36.945: E/WindowManager(21969): at java.lang.reflect.Method.invoke(Method.java:507)
08-28 15:37:36.945: E/WindowManager(21969): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
08-28 15:37:36.945: E/WindowManager(21969): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
08-28 15:37:36.945: E/WindowManager(21969): at dalvik.system.NativeStart.main(Native Method)
这个泄露的窗户是什么？我的应用程序工作正常，但有时崩溃，总是抛出这个错误。
我的代码
package com.kod.example;
import java.util.List;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.Button;
import com.google.android.maps.MapActivity;
public class Find_Tab_MainActivity extends MapActivity {
// flag for Internet connection status
Boolean isInternetPresent = false;
Geocoder geocoder;
String status;
// Connection detector class
ConnectionDetector cd;
// Alert Dialog Manager
AlertDialogManager alert = new AlertDialogManager();
// Google Places
GooglePlaces googlePlaces;
// Places List
PlacesList nearPlaces;
Place reference;
// GPS Location
GPSTracker gps;
double latitude;
double longitude;
// Button
Button loginbtn;
Place p;
Intent i;
// Progress dialog
ProgressDialog pDialog;
final Context context = this;
String type,KEY_KEYWORD,KEY_TAG;
// KEY Strings
public static String KEY_REFERENCE = "reference"; // id of the place
public static String KEY_NAME = "name"; // name of the place
public static String KEY_VICINITY = "vicinity";
public static String KEY_NUMBER = "formatted_phone_number";
// Place area name
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
cd = new ConnectionDetector(getApplicationContext());
Intent entent = getIntent();
type = entent.getExtras().getString("KEY_TYPES");
KEY_KEYWORD = entent.getExtras().getString("KEY_KEYWORD");
KEY_TAG = entent.getExtras().getString("KEY_TAG");
// Check if Internet present
isInternetPresent = cd.isConnectingToInternet();
if (!isInternetPresent) {
// Internet Connection is not present
alert.showAlertDialog(Find_Tab_MainActivity.this, "Internet Connection Error",
"Please connect to working Internet connection", false);
// stop executing code by return
return;
}
// creating GPS Class object
gps = new GPSTracker(this);
// check if GPS location can get
if (gps.canGetLocation()) {
} else {
// Can't get user's current location
alert.showAlertDialog(Find_Tab_MainActivity.this, "GPS Status",
"Couldn't get location information. Please enable GPS",
false);
// stop executing code by return
return;
}
// calling background Async task to load Google Places
// After getting places from Google all the data is shown in listview
new LoadPlaces().execute();
/** Button click event for shown on map */
}
/**
* Background Async Task to Load Google places
* */
class LoadPlaces extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
MyProgressDialog.show(Find_Tab_MainActivity.this, "", "");
}
/**
* getting Places JSON
* */
protected String doInBackground(String... args) {
// creating Places class object
googlePlaces = new GooglePlaces();
try {
// Separeate your place types by PIPE symbol "|"
// If you want all types places make it as null
// Check list of types supported by google
String types = type; // Listing places only for park
// Radius in meters - increase this value if you don't find any places
double radius = 10000; // 1000 meters
if(KEY_TAG.equalsIgnoreCase("1")||KEY_TAG.equalsIgnoreCase("4")||KEY_TAG.equalsIgnoreCase("5"))
{
// get nearest places
nearPlaces = googlePlaces.search(gps.getLatitude(),gps.getLongitude(), radius, types);
}
else if(KEY_TAG.equalsIgnoreCase("2")||KEY_TAG.equalsIgnoreCase("3"))
{
// get nearest places
nearPlaces = googlePlaces.StreetGaragesearch(gps.getLatitude(), gps.getLongitude(), radius, types,KEY_KEYWORD);
}
else if(KEY_TAG.equalsIgnoreCase("6"))
{
String addressInput = type;
geocoder = new Geocoder(Find_Tab_MainActivity.this);
List<Address> address;
address = geocoder.getFromLocationName(addressInput,1);
if (address == null) {
alert.showAlertDialog(Find_Tab_MainActivity.this, "Places Error",
"Sorry error occured.",
false);
}
else{
Address location = address.get(0);
latitude = location.getLatitude();
longitude = location.getLongitude();
nearPlaces = googlePlaces.Keywordsearch(latitude,longitude,radius+40000,"parking",type);
}
// get nearest places
}
}
catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialoghis
* and show the data in UI
* Always use runOnUiThread(new Runnable()) to update UI from background
* thread, otherwise you will get error
* **/
@SuppressWarnings("deprecation")
protected void onPostExecute(String file_url) {
try{
// Get json response status
status = nearPlaces.status;
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
if(status.equals("OK")){
// Successfully got places details
i = new Intent(getApplicationContext(),
MyPlacesMapActivity.class);
// Sending user current geo location
// passing near places to map activity
i.putExtra("near_places", nearPlaces);
//passing type to placemapactivity to identify the overlay icon
i.putExtra("KEY_TAG", KEY_TAG);
//passing place reference
i.putExtra("place_reference", reference);
// staring activity
startActivity(i);
}
else if(status.equals("ZERO_RESULTS")){
// Zero results found
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("No Results");
// Setting Dialog Message
alertDialog.setMessage("Sorry no places found. Try to change the location");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
else if(status.equals("UNKNOWN_ERROR"))
{
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("Error");
// Setting Dialog Message
alertDialog.setMessage("Sorry unknown error occured.");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
else if(status.equals("OVER_QUERY_LIMIT"))
{
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("Error");
// Setting Dialog Message
alertDialog.setMessage("Sorry query limit to is reached");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
else if(status.equals("REQUEST_DENIED"))
{
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("Error");
// Setting Dialog Message
alertDialog.setMessage("Sorry error occured. Request is denied");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
else if(status.equals("INVALID_REQUEST"))
{
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("Error");
// Setting Dialog Message
alertDialog.setMessage("Sorry error occured. Invalid Request");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
else
{
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("Error");
// Setting Dialog Message
alertDialog.setMessage("Sorry error occured.");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
}
});
}catch(NullPointerException e){
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle("Error");
// Setting Dialog Message
alertDialog.setMessage("Requested place not found.");
// Setting alert dialog icon
alertDialog.setIcon(R.drawable.fail);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Find_Tab_MainActivity.this.finish();
}
});
// Showing Alert Message
alertDialog.show();
}
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
答案 0 :(得分：6)
What is this leaked window?
您案件中的WindowLeaked exception正在发生，因为在完成活动之前您没有解雇MyProgressDialog。因此它泄漏了与之相关的记忆。
一般情况：
WindowLeaked exception通常会发生在某种异步任务在完成它的活动之后完成时被破坏。这种类型的异常发生在主要用于Dialogs的情况下，我们在这里在销毁活动上下文之前没有关闭对话框。
因此最好在显示对话框之前进行检查，如下所示：
if(getActivity()!= null && !getActivity().isFinishing()){
Dialog.show();
}
解决方案是在完成活动之前dismiss MyProgressDialog。
修改您的代码，如下所示：
protected void onPostExecute(String file_url) {
// your first line should be this
if ( MyProgressDialog!=null && MyProgressDialog.isShowing() ){
MyProgressDialog.dismiss();
}
// rest of the code
}
答案 1 :(得分：2)
警报对话框出现问题。您不会在任何地方解雇您发起的对话框，也不会调用.dismiss()。同样仅供参考，您在runOnUiThread内不需要onPostExecute，因为此函数在UI线程本身中运行。
答案 2 :(得分：1)
在退出活动之前，在您创建的对话框上调用dismiss（），例如在onPause（）