position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a FragmentStatePagerAdapter with 6 fragments inside. Each Fragment connect's to the server and loads data. Right now, the server connection is being done in Fragment.onStart(), that means that at any moment, I have 3 http requests going (the selected Fragment, and one to each side). What I want is to have only one connection at the time, so I figure to use viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageSelected(final int position) { CustomFragment fragment = (CustomFragment)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: This is what I have jsFiddle link nav . main ul ul { position : absolute ; list - style : none ; display : none ; opacity : 0 ; visibility : hidden ; padding : 10px ; background - color : rgba ( 92 , 91 , 87 , 0.9 ); - webkit - transition : opacity 600ms , visibility 600ms ; transition : opacity 600ms , visibility 600ms ; } nav . main ul li : hover ul { display : block ; visibility : visible ; opacity : 1 ; } Lorem Ipsum Dolor Sit Amet Why is there no transition? If I set nav . main ul li : hover ul { display : block ; visibility :

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: i am using horizontal layout manager for my recyclerView. I need make recyclerView in next way: when click on some item - make smoothScrool to that position and put tat item in the center of recyclerView (if it possible, for example 10 item from 20). so i have no problem with smoothScrollToPosition, but how to put item than in the center of RecyclerView??? thanks! 回答1: Yes it's possible By implements RecyclerView.SmoothScroller's method 'onTargetFound'. /** * Called when the target position is laid out. This is the last callback

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm new to R and haven't done any programming before... When I attempt to create a box chart with standard error bars I get the error message mentioned in the title. I used a script I found on R Cookbook which I tweaked a bit: ggplot ( GVW , aes ( x = "variable" , y = "value" , fill = "Genotype" )) + geom_bar ( position = position_dodge (), stat = "identity" , colour = "black" , size =. 3 )+ geom_errorbar ( data = GVW [ 1 : 64 , 3 ], aes ( ymin = value - seSKO , ymax = value + seSKO ), size =. 3 , width =. 2 , position = position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a custom view for each row in a custom ListAdapter and I am trying to perform onClick action and get the row position in the list where the click came from. I want to figure out when TextView or ImageView is clicked, I also need to know what row in the list it came form. I have tried using OnItemClickListener and it works fine to get the row where the click comes from. However, once I register an OnClick listener for the views, the onItemClicked() method gets skipped and onClick() is executed straight away, but there is no way of

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Can someone show me how to get the top & left position of a div or span element when one is not specified? ie: stuff stuff In the above, if I do: document.getElementById('11a').style.top The the value of 55px is returned. However, if I try that for span '12a', then nothing gets returned. I have a bunch of div / span s on a page that I cannot specify the top / left properties for, but I need to display a div directly under that element. 回答1: This function will tell you the x,y position of the element relative to the page. Basically you have

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is there any function in Python that I can use to insert a value in a certain position of a string? Something like this: "3655879ACB6" then in position 4 add "-" to become "3655-879ACB6" 回答1: No. Python Strings are immutable. >>> s='355879ACB6' >>> s[4:4] = '-' Traceback (most recent call last): File " ", line 1, in TypeError: 'str' object does not support item assignment It is, however, possible to create a new string that has the inserted character: >>> s[:4] + '-' + s[4:] '3558-79ACB6' 回答2: This seems very easy: >>> hash = "355879ACB6" >>

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a problem with django queryset ordering. My model contains a field named position (a PositiveSmallIntegerField ), which I'd like to used to order query results. I use order_by('position') , which works great. Problem : my position field is nullable ( null=True, blank=True ), because I don't wan't to specify a position for every 50000 instances of my model :( When some instances have a NULL "position", order_by returns them in the top of the list : I'd like them to be at the end... In RAW SQL, I used to write things like " IF(position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to find the view's position on the display screen. To do it, I use the methods such as view.getLeft() , view.getBottom() , view.getRight() , view.getTop() . But unfortunately, all these methods are returned 0 . Is there any alternate way to find the view's positions (i.e coordinates on screen)? My layout main.xml : And my class has this in onCreate() : super.onCreate(savedInstanceState); setContentView(R.layout.main); tv1 = (TextView) findViewById(R.id.tv1); tv2 = (TextView) findViewById(R.id.tv2); System.out.println("tv4 width:"+tv2

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to filter my ListView which is populated with this ArrayAdapter: package me.alxandr.android.mymir.adapters; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.HashMap; import java.util.Iterator; import java.util.Set; import me.alxandr.android.mymir.R; import me.alxandr.android.mymir.model.Manga; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter;