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成功熬了四年还没死？一个IT屌丝创业者的深刻反思 - 资讯 - 清泛网 - 专注C...
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去年我曾犯贱去趟了移动互联网的浑水，做了个手机app。刚开始的时候感觉很高级，但很快，铺天盖地的竞争对手就出现了。
我又发现自己陷入了07年一样的场景：作为一个小小陪练，我他妈的又被一帮泰森们给围住了...
如何将 excel 中数据按坐标读取并显示到其他屏幕？ - App Inventor 2 中文...
...示在屏幕2中，请问如何实现这个功能？
回复如下：
App Inventor 2 目前没有excel操作相关功能，也没有现成的拓展。 目前只能处理csv(不带样式的excel)或txt纯文本数据，可考虑将excel保存为csv文件，将csv文件导入“数据文件”组...
Was PreferenceFragment intentionally excluded from the compatibility package?
I'm looking to write preferences that can be applied to both 3.0 and pre-3.0 devices. Discovering that PreferenceActivity contains deprecated methods (although these are used in the accompanying sample code), I looked at PreferenceFragement and the compatibility package to solve my woes.
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How to determine when Fragment becomes visible in ViewPager
...UserVisibleHint(). This value is by default true.
// Hint provided by the app that this fragment is currently visible to the user.
boolean mUserVisibleHint = true;
So there might be a problem when you try to use it before setUserVisibleHint() was invoked. As a workaround you might set value in on...
How to use NSCache
... of methods
// that use it. For example, you could make it a field of your application
// delegate, or of your view controller, or something like that. Up to you.
NSCache *myCache = ...;
NSAssert(myCache != nil, @"cache object is missing");
// Try to get the existing object out of the cache, if it'...
How do I set a ViewModel on a window in XAML using DataContext property?
...arating them is useful for when you want to write isolated test cases.
In App.xaml:
<Application
x:Class="BuildAssistantUI.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Bui...
How to use a keypress event in AngularJS?
...
You need to add a directive, like this:
Javascript:
app.directive('myEnter', function () {
return function (scope, element, attrs) {
element.bind("keydown keypress", function (event) {
if(event.which === 13) {
scope.$apply(function (){
...
Android - Camera preview is sideways
...
This issue appeared to start out as a bug with certain hardware see here but can be overcome by using the call to mCamera.setDisplayOrientation(degrees) available in API 8. So this is how I implement it:
public void surfaceChanged(Surf...
How do I obtain crash-data from my Android application?
How can I get crash data (stack traces at least) from my Android application? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid.
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How do search engines deal with AngularJS applications?
I see two issues with AngularJS application regarding search engines and SEO:
15 Answers
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