external | 易学教程

External program blocks when run by Runtime exec

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问题 I'm attempting to launch an instance of the VideoLAN program from within a java application. One of the ways I've tried to do this is shown here: Process p = Runtime.getRuntime().exec("\"C:\\Program Files\\VideoLAN\\VLC\\vlc.exe\" \"http://www.dr.dk/Forms/Published/PlaylistGen.aspx?qid=1316859&odp=true\" :sout=#std{access=udp,mux=ts,dst=127.0.0.1:63928}"); If I execute the above command the vlc program will be launched, and will start a streaming operation (it goes through connect, buffering

How to Include external C library on windows

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I am fairly new to C and I am trying to include a external library without using any IDE, only text-editor and the minGW compiler on windows cmd. The library is libPNG in this case, I would really like to understand how the process work not only for this library . If there is a better way (and easier) to do this, I would also like to know. Mathieu You have two parts to take care of: compilation, linking. Compilation In compilation, when you transform source files in object files, your compiler must know what are the functions provided by the external library. You could declare each function

Reading and Writing a file from SD card

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问题 I have bought a book ("Beginning Android Games") by Mario Zechner. On page 149, he talks about saving and opening a file on External Storage. I understand the code, however I dont understand WHY it says this: Why does it say this? I have all the permissions in my Manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.amzoft.android.reference" android:versionCode="1" android:versionName="1.0" android:installLocation=

External table does not return the data in its folder

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I have created an external table in Hive with at this location : CREATE EXTERNAL TABLE tb ( ... ) PARTITIONED BY (datehour INT) ROW FORMAT SERDE 'com.cloudera.hive.serde.JSONSerDe' LOCATION '/user/cloudera/data'; The data is present in the folder but when I query the table, it returns nothing. The table is structured in a way that it fits the data structure. SELECT * FROM tb LIMIT 3; Is there a kind of permission issue with Hive tables: do specific users have permissions to query some tables? Do you know some solutions or workarounds? You have created your table as partitioned table base on

Modify existing excel Connection Name in VBA

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I need to update the Connection Name of an excel workbook's sql connection. This is my attempt. I have been able to modify the Connection String and Command Text by doing a standard replace. Sub ConnectionString_modify() Dim i As Long Dim cnt As Long Dim modtext As String Dim modrange As String 'Grab nummber of workbook connections cnt = ActiveWorkbook.Connections.Count For i = 1 To cnt 'Changes to Connection string --This works modtext = ActiveWorkbook.Connections.Item(i).OLEDBConnection.Connection modtext = VBA.Replace(modtext, "_FY2013", "_FY2014") ActiveWorkbook.Connections.Item(i)

Reading and Writing a file from SD card

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I have bought a book ("Beginning Android Games") by Mario Zechner. On page 149, he talks about saving and opening a file on External Storage. I understand the code, however I dont understand WHY it says this: Why does it say this? I have all the permissions in my Manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.amzoft.android.reference" android:versionCode="1" android:versionName="1.0" android:installLocation="preferExternal"> <application android:label="Android Reference" android:icon="@drawable/ic_launcher"

How to delete folders from SDCard during uninstalling of my app in Android?

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问题 I went through the following link which says that the external folders will be deleted automatically during uninstallation of my app. I am using the following code to create the folders and file: private static String TEMP_FOLDER_PATH = Environment.getExternalStorageDirectory() + "/myAppFolder/"; My problem is that the folder myAppFolder is not getting deleted when I uninstall the app. Am I going wrong anywhere? 回答1: Save it in your Apps Private Folder (/data/data/ yourappPackege ). This

In Javascript, is it possible to pass a variable into <script> “src” parameter?

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问题 Is it possible in Javascript to pass a variable through the src parameter? ie. <script type="text/javascript" src="http://domain.com/twitter.js?handle=aplusk" />` I'd like twitter.js to look and see if a "handle" was passed before doing what I need it to do and returning its response back to the originating page calling twitter.js . I had originally created a function in twitter.js that did the following: function getHandle() { var vars = [], hash, username; var hashes = window.location.href

How to delete folders from SDCard during uninstalling of my app in Android?

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I went through the following link which says that the external folders will be deleted automatically during uninstallation of my app. I am using the following code to create the folders and file: private static String TEMP_FOLDER_PATH = Environment.getExternalStorageDirectory() + "/myAppFolder/"; My problem is that the folder myAppFolder is not getting deleted when I uninstall the app. Am I going wrong anywhere? Save it in your Apps Private Folder (/data/data/ yourappPackege ). This folder will be removed when uninstalling the App. You can get your private Folder with the Method getFilesDir()

window.onload in external script gets ignored in Javascript

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index.html <html> <head> <script type="text/javascript" src="foo.js"></script> <script type="text/javascript"> window.onload = function() { console.log("hello from html"); }; </script> </head> <body> <div class="bar">bar</div> </body> </html> foo.js // this js file will be completely ignored with window.onload //window.onload = function() { console.log("hello from external js"); var bar = document.getElementsByClassName("bar"); // this returns 0 instead of 1 console.log(bar.length); //}; When window.onload is used in html, window.onload from external js will be ignored. When window.onload from