我对学习音乐可视化很感兴趣.
(例如:http://en.wikipedia.org/wiki/Music_visualization)
有没有人有关于这个问题的推荐书？
(我知道这不是一个技术问题,但它似乎是个好问的地方)
非常感谢
我想专门为给定的URL运行默认的Android浏览器.我正在使用此代码:
Intent i = new Intent();
i.setAction("android.intent.action.VIEW");
i.addCategory("android.intent.category.BROWSABLE");
i.setClassName("com.google.android.browser", "com.android.browser.BrowserActivity");
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.setData(Uri.parse(url));
startActivity(i);
我收到的错误是:
Unable to find explicit activity class {
com.google.android.browser/com.android.browser.BrowserActivity};
have you declared this activity in your AndroidManifest.xml?
我也尝试过包过滤意图:
i.setPackage("com.google.android.browser");
而不是setClassName,但无济于事:
No Activity found to handle Intent { act=android.intent.action.VIEW
cat=[android.intent.category.BROWSABLE]
dat=http://www.google.com/ flg=0x10000000 pkg=android }
我也尝试过添加<uses-library android:name="com.google.android.browser" />清单.
我在这里错过了什么吗？
PS:我对使用不感兴趣,startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com")))因为它会列出浏览的所有选项Intent.
与iPhone和Windows Phone 7相比,它需要永远启动 - 期望随着时间的推移改进是否现实？
是否可以检查查询删除了多少行？
queryset = MyModel.object.filter(foo=bar)
queryset.delete()
deleted = ...
或者我应该使用交易吗？
@transaction.commit_on_success
def delete_some_rows():
queryset = MyModel.object.filter(foo=bar)
deleted = queryset.count()
queryset.delete()
PHP + MySQL示例:
mysql_query('DELETE FROM mytable WHERE id < 10');
printf("Records deleted: %d\n", mysql_affected_rows());
我正在尝试构建一个在TFS中添加工作项的ASP.NET页面.
我启用了模拟和Windows身份验证:
<authentication mode="Windows" />
<identity impersonate="true" password="" userName="" />
<customErrors mode="Off" />
在页面中,我访问TFS并尝试添加工作项:
TfsTeamProjectCollection prjCollection = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(new Uri("xxx"));
WorkItemStore store = prjCollection.GetService<WorkItemStore>();
...
但是,它仅在我在ASP.NET Impersonation中选择SpecificUser并存储凭据时才有效.选择Authenticated用户时,它不起作用.
我已经检查过SpecificUser与Authenticated的相同,但在后一种情况下我得到权限错误(这表明模拟无法正常工作).
TF30063: You are not authorized to access XXX. ---> System.Net.WebException: The remote server returned an error: (401) Unauthorized.
at System.Net.HttpWebRequest.GetResponse()
at Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.AsyncWebRequest.ExecRequest(Object obj)
--- End of inner exception stack trace ---
at Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.ProcessHttpResponse(HttpWebResponse response, Stream responseStream, WebException webException, XmlReader& xmlResponseReader)
at Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.ExecWebServiceRequest(HttpWebRequest request, XmlWriter requestXml, String methodName, …