zoukankan      html  css  js  c++  java
  • View not attached to window manager crash 的解决办法

     View not attached to window manager crash 的解决办法

    转自:http://stackoverflow.com/questions/22924825/view-not-attached-to-window-manager-crash


    down vote
    accepted
    +50

    How to reproduce the bug:

    1. Enable this option on your device: Settings -> Developer Options -> Don't keep Activities.
    2. Press Home button while the AsyncTask is executing and the ProgressDialog is showing.

    The Android OS will destroy an activity as soon as it is hidden. When onPostExecute is called the Activity will be in "finishing" state and the ProgressDialog will be not attached to Activity.

    How to fix it:

    1. Check for the activity state in your onPostExecute method.
    2. Dismiss the ProgressDialog in onDestroy method. Otherwise, android.view.WindowLeakedexception will be thrown. This exception usually comes from dialogs that are still active when the activity is finishing.
    public class YourActivity extends Activity {
    
        <...>
    
        private void showProgressDialog() {
            if (pDialog == null) {
                pDialog = new ProgressDialog(StartActivity.this);
                pDialog.setMessage("Loading. Please wait...");
                pDialog.setIndeterminate(false);
                pDialog.setCancelable(false);
            }
            pDialog.show();
        }
    
        private void dismissProgressDialog() {
            if (pDialog != null && pDialog.isShowing()) {
                pDialog.dismiss();
            }
        }
    
        @Override
        protected void onDestroy() {
            dismissProgressDialog();
            super.onDestroy();
        }
    
        class LoadAllProducts extends AsyncTask<String, String, String> {
    
            /**
             * Before starting background thread Show Progress Dialog
             * */
            @Override
            protected void onPreExecute() {
                showProgressDialog();
            }
    
            /**
             * getting All products from url
             * */
            protected String doInBackground(String... args)
            {
                doMoreStuff("internet");
                return null;
            }
    
    
            /**
             * After completing background task Dismiss the progress dialog
             * **/
            protected void onPostExecute(String file_url)
            {
                if (YourActivity.this.isDestroyed()) { // or call isFinishing() if min sdk version < 17
                    return;
                }
                dismissProgressDialog();
                something(note);
            }
        }
    }
  • 相关阅读:
    telnet c# 执行命令
    C# Windows服务安装、卸载批处理代码
    数据库高人 邹健 博客链接
    HDOJ_1232 并查集 畅通工程
    poj3461 KMP 小结
    HDOJ_2094 寻找冠军 set的简单应用
    HDOJ_1272 小希的迷宫 并查
    HDOJ_2754 素数种类统计
    linux下的jsp
    mysql
  • 原文地址:https://www.cnblogs.com/cheneasternsun/p/5614323.html
Copyright © 2011-2022 走看看