Question

大家好，我收到以下代码中的错误，任何人都建议我如何解决这个问题......

这是我的代码::

@Override
    public void onClick(View v) {
        reviewText = etReviews.getText().toString();

        if (!TextUtils.isEmpty(reviewText)) {


            new ReviewUpdateTask().execute();
        } else {
            Toast.makeText(getApplicationContext(), "Write the Review",
                    Toast.LENGTH_SHORT).show();
        }
    }


private class ReviewUpdateTask extends AsyncTask {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            dialog = new Dialog(act);
            dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
            dialog.setContentView(R.layout.loader_view);
            dialog.show();
        }

        @Override
        protected void onPostExecute(Object result) {
            super.onPostExecute(result);

            if (dialog.isShowing())
            {
                dialog.dismiss();
                dialog = null;
            }
            try {
                JSONArray arr = AppConstants.reviewInfoObj
                        .getJSONArray("userReviews");
                adapter = new MyReviewAdapter(ReviewActivity.this, arr);
                lvReviews.setAdapter(adapter);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }


        @Override
        protected Object doInBackground(Object... params) {


                    String response = Data.postData(obj, AppConstants.urlReviewUpdate);
                    AppConstants.reviewInfoObj = constructReviewData();


            return null;
        }

        private JSONObject constructReviewData() {
            try {
                JSONObject obj = AppConstants.reviewInfoObj;
                JSONArray arr = obj.getJSONArray("userReviews");
                //
                obj = new JSONObject();
                obj.put("uRating", ratedValue);
                obj.put("uLike", "yes");
                obj.put("uDisLike", "no");
                obj.put("uPlace", address);
                obj.put("uDateTime", currentDateandTime);
                obj.put("uReview", reviewText);
                arr.put(obj);
                obj.put("userReviews", arr);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            return obj;
        }

    }

首先点击其工作正常，当我在评论编辑文本中输入新文本时，我正在强行关闭

例外是：

 android.view.WindowLeaked: Activity com.appdest.labelleza.ReviewActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{426e2cb0 V.E..... R......D 0,0-350,250} that was originally added here
    06-01 18:53:42.262: E/WindowManager(4142):  at android.view.ViewRootImpl.<init>(ViewRootImpl.java:388)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:256)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:94)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.app.Dialog.show(Dialog.java:291)
    06-01 18:53:42.262: E/WindowManager(4142):  at com.appdest.labelleza.ReviewActivity$ReviewUpdateTask.onPreExecute(ReviewActivity.java:245)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:587)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.os.AsyncTask.execute(AsyncTask.java:535)
    06-01 18:53:42.262: E/WindowManager(4142):  at com.appdest.labelleza.ReviewActivity.onClick(ReviewActivity.java:207)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.view.View.performClick(View.java:4470)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.view.View$PerformClick.run(View.java:18599)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.os.Handler.handleCallback(Handler.java:733)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.os.Handler.dispatchMessage(Handler.java:95)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.os.Looper.loop(Looper.java:157)
    06-01 18:53:42.262: E/WindowManager(4142):  at android.app.ActivityThread.main(ActivityThread.java:5633)
    06-01 18:53:42.262: E/WindowManager(4142):  at java.lang.reflect.Method.invokeNative(Native Method)
    06-01 18:53:42.262: E/WindowManager(4142):  at java.lang.reflect.Method.invoke(Method.java:515)
    06-01 18:53:42.262: E/WindowManager(4142):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:896)
    06-01 18:53:42.262: E/WindowManager(4142):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:712)
    06-01 18:53:42.262: E/WindowManager(4142):  at dalvik.system.NativeStart.main(Native Method)

任何人都建议我如何解决这个问题..？

Answer 1

当您在onPreExecute()方法中显示对话框时，AsyncTask会保留对您的活动的引用。这就是你获得内存泄漏的方式，这就是你得到Exception的原因。一种解决方案是使您的对话类成为您的活动的成员，并在onPause()期间将其解除。

考虑阅读Avoiding Memory Leaks

Answer 2

确保在活动的onPause上将对话框设置为null，并在尝试调用其上的方法之前检查其是否为onOostExecute。

在AsyncTask中，项目未更新？

2 个答案: