我是 android 新手，我已经分配了一个项目。我在查看错误日志时遇到了问题。这是我的错误日志，请告诉我这个问题是什么以及如何解决
03-13 12:40:06.470: E/WindowManager(923): android.view.WindowLeaked: Activity om.example.mytest.ReadContactsActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d0e768 V.E..... R.....ID 0,0-97,92} that was originally added here
03-13 12:40:06.470: E/WindowManager(923): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
03-13 12:40:06.470: E/WindowManager(923): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
03-13 12:40:06.470: E/WindowManager(923): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
03-13 12:40:06.470: E/WindowManager(923): at android.app.Dialog.show(Dialog.java:281)
03-13 12:40:06.470: E/WindowManager(923): at com.example.mytest.ReadContactsActivity$CountDownTask.onPreExecute(ReadContactsActivity.java:50)
03-13 12:40:06.470: E/WindowManager(923): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
03-13 12:40:06.470: E/WindowManager(923): at android.os.AsyncTask.execute(AsyncTask.java:534)
03-13 12:40:06.470: E/WindowManager(923): at com.example.mytest.ReadContactsActivity.onCreate(ReadContactsActivity.java:34)
03-13 12:40:06.470: E/WindowManager(923): at android.app.Activity.performCreate(Activity.java:5104)
03-13 12:40:06.470: E/WindowManager(923): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
03-13 12:40:06.470: E/WindowManager(923): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
03-13 12:40:06.470: E/WindowManager(923): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
03-13 12:40:06.470: E/WindowManager(923): at android.app.ActivityThread.access$600(ActivityThread.java:141)
03-13 12:40:06.470: E/WindowManager(923): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
03-13 12:40:06.470: E/WindowManager(923): at android.os.Handler.dispatchMessage(Handler.java:99)
03-13 12:40:06.470: E/WindowManager(923): at android.os.Looper.loop(Looper.java:137)
03-13 12:40:06.470: E/WindowManager(923): at android.app.ActivityThread.main(ActivityThread.java:5039)
03-13 12:40:06.470: E/WindowManager(923): at java.lang.reflect.Method.invokeNative(Native Method)
03-13 12:40:06.470: E/WindowManager(923): at java.lang.reflect.Method.invoke(Method.java:511)
03-13 12:40:06.470: E/WindowManager(923): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-13 12:40:06.470: E/WindowManager(923): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-13 12:40:06.470: E/WindowManager(923): at dalvik.system.NativeStart.main(Native Method)
这是我为实现而编写的代码
private class CountDownTask extends AsyncTask<Void, String, Void>{
// A callback method executed on UI thread on starting the task
@Override
protected void onPreExecute() {
// Getting reference to the TextView tv_counter of the layout activity_main
dialog = new Dialog(ReadContactsActivity.this);
dialog.setCancelable(false);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.progressdialog);
progressBar = (ProgressBar) dialog.findViewById(R.id.progressBar1);
dialog.show();
}
// A callback method executed on non UI thread, invoked after
// onPreExecute method if exists
protected Void doInBackground(Void... params) {
ContentResolver cr = ReadContactsActivity.this.getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phone = pCur.getString(
pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
objItem = new listBean();
objItem.setName(name);
objItem.setNumber(phone);
listArray.add(objItem);
}
pCur.close();
}
}
}
return null;
}
// A callback method executed on UI thread, invoked by the publishProgress()
// from doInBackground() method
@Override
protected void onProgressUpdate(String... values) {
}
@Override
protected void onPostExecute(Void result) {
dialog.dismiss();
objAdapter = new listAdapter(ReadContactsActivity.this, items);
listView.setAdapter(objAdapter);
}