hint

问题 How to make hint in EditText visible during user input and after it? And is it posible to place hint on the right side of EditText control, but user input text - on the left side? Here is an example what I'm looking for: 回答1: So I've found pretty simple solution, a bit tricky, but it works - just to to make relative layout with EditText for input and TextView for hint inside: <RelativeLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content"

问题 I want to add a TextField with an integrated hint text, a user prompt, a placeholder until the user enters text. The prompt text disappears when the TextField is focused and re-appears if the TextField loses focus and no text is entered. I initially thought that this would be a generic feature for Vaadin TextFields but that doesn't seem to be the case. Now I'm looking for a way to implement my own extension of the TextField to add this feature. But I'm stuck. My question is if anyone here has

问题 Is there a way to set multiple colors to the edittext's hint when wrapped by android.support.design.widget.TextInputLayout without compromising the behaviour of floating edittexts? like, Headline* Headline and * with different colored hint 回答1: Use SpannableString class which allows you to use different styles on parts of your string ... If I remember correctly, TextAppearanceSpan class is used for coloring a text.. 回答2: See below code this is work for me. EditText editText = (EditText)

问题 I am using Chrome Dev Tools to audit my site's homepage. And it gives one of the opportunities "Preconnect to required origins" for the facebook, twitter and linkedin share button in my homepage. I read the google article about preconnect and dns-prefetch at https://developers.google.com/web/fundamentals/performance/resource-prioritization , but find the syntax is only for link tag, as below: But in my home page, the share buttons that will connect to the social sites are looks like this:

问题 Can anyone give a clear explain of these 3 concept? What's the difference and how to use them? 回答1: size hint is the preferred size of the widget, layouts will try to keep it as close to this as possible. size policy describes how the size may change when the preferred size cannot be used (can it stretch or shrink) see the QSizePolicy::Policy enum for a description of each. size constraint are the maximumSize and minimumSize the widget can be. 来源： https://stackoverflow.com/questions/20327855

问题 The actual problem I am facing is to be able to force a eclipselink update irrespective of the content of the cache. Currently eclipselink doesn't create new update statements if the new update has the same value as in the cache. I don't want to use the refresh property( ) in the persistence xml. I am looking for a solution where I can specify to the entity being update not to use the values in the cache. EntityManager em=getEntityManager(); EntityTransaction t = em.getTransaction(); t.begin(

问题 Why cannot top level module be set to "Main" in Hint (Language.Haskell.Interpreter)? Allow me to demonstrate: module Main where import Language.Haskell.Interpreter import Control.Monad main = do res <- runInterpreter (test "test") case res of Left e -> putStrLn (show e) Right t -> putStrLn (show t) return () test :: String -> Interpreter () test mname = do loadModules [mname ++ ".hs"] setTopLevelModules ["Main"] Will result in: NotAllowed "These modules are not interpreted:\nMain\n" 回答1: As

问题 How can I apply manual line breaks in Hint.css hints? I tried almost everything: <br>, \n, and combinations of them. I tried also some things in the CSS: white-space: normal; word-wrap: break-word; word-wrap: no-wrap; word-wrap:break-word white-space: nowrap; Now : Without line break, the hint is one line high, but and any length long. Ideally : Apply a manual line break wherever I want, leaving the untouched hints without line breaks. 回答1: Found the answer at: https://github.com/chinchang

问题 I'm writing a project using Haskell, stack and hint . I'm using hint to interpret a user-supplied module. The catch is that this module uses types and functions from a dependency. When I run my program using stack exec , everything works fine. However, when I install my program (using stack install --local-bin-path bin ) and try to run the executable generated, the GHC interpreter fails with an error: Could not find module <module> . This is because (I think) it can't find the files needed

问题 we have a few tables storing temporal data that have natural a primary key consisting of 3 columns. Example: maximum temperature for this day. This is the Composite Primary key index (in this order): id number(10): the id of the timeserie. day date: the day for which this data was reported kill_at timestamp: the last timestamp before this data was deleted or updated. Simplified logic: When we make a forecast at 10:00am, then the last entry found for this id/day combination has his create_at