padding | 易学教程

Android change google map padding at runtime

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问题 I want to move Google map layout items at runtime, but I'm not able to do it and I don't know if it's possible or not. What I want to do is: I have a Google map fragment which takes up all the screen. I also have an Ad. When app starts, I show the map. Like this: And when the ad loads, I show the ad at the bottom, but I need to move the Google logo above the ad. Like this: I've tried with: if (banner is loaded) googleMap.setPadding(0, 0, 0, banner.getLayoutParams().height); But I had no

PHP: How to add leading zeros/zero padding to float via sprintf()?

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问题 I'm using sprintf() to get a formatted string of some float numbers with a certain precision. In addition, I wanted to add leading zeros to make all numbers even in length. Doing that for integers is pretty straight forward: sprintf('%02d', 1); This will result in 01 . However, trying the same for a float with precision doesn't work: sprintf('%02.2f', 1); Yields 1.00 . How can I add leading zeros to a float value? 回答1: Short answer: sprintf('%05.2f', 1); will give the desired result 01.00

Padding bits in unsigned integers and bitwise operations in C89

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问题 I have a lot of code that performs bitwise operations on unsigned integers. I wrote my code with the assumption that those operations were on integers of fixed width without any padding bits. For example an array of 32-bit unsigned integers of which all 32 bits available for each integer. I'm looking to make my code more portable and I'm focused on making sure I'm C89 compliant (in this case). One of the issues that I've come across is possible padded integers. Take this extreme example,

How to add padding around a WebView

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问题 My layout file defines a WebView, underneath which there are some fixed height buttons. <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:fadingEdge="none"> <WebView android:id="@+id/webview" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1.0"/> <LinearLayout android:layout_width="fill

博客园的界面设置

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　　每次看大佬的博客发现他们博客设置的很漂亮，在看看自己的博客，发现自己的博客是那么的惨淡（qwq）。　　今天搞了一天，终于把自己的博客设置的稍微好看了一点。 1. 公告栏如何显示自己的图片：　　首先打开个人主页，然后右键自己的图片，点击检查，找到跟“<img src="//pic.cnblogs.com/avatar/1771497/20190817121652.png" alt="Sun_Sean的头像" class="img_avatar">”类似的东西，在把它直接加入到“博客侧边栏公告”（进入博客-设置） 2.如何设置背景：　　在“页面定制CSS代码”，加入CSS码，如下： 1 /*simplememory*/ 2 #google_ad_c1, #google_ad_c2 {display:none;} 3 .syntaxhighlighter a, .syntaxhighlighter div, .syntaxhighlighter code, .syntaxhighlighter table, .syntaxhighlighter table td, 4 .syntaxhighlighter table tr, .syntaxhighlighter table tbody, .syntaxhighlighter table thead,

A way to find the size and location of padding in a struct?

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问题 I'm trying to write a tool that will take as input some C code containing structs. It will compile the code, then find and output the size and offset of any padding the compiler decides to add to structs within it. This is pretty straightforward to do by hand for a known struct using offsetof, sizeof, and some addition, but I can't figure out an easy way to do it automatically for any input struct. If I knew how to iterate through all elements in a struct, I think I could get the tool written

扩大小按钮的事件点击范围

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我们在平时的实战开发过程中经常会碰到这样的一些需求，我们要点击一个小按钮弹出一个DialogFragment或者点击之后跳转到另外一个界面上去，我们发现由于按钮太小了不容易点击，这样的体验非常不好，怎么办？效果图很多长人肯定会说给View加个Padding就行了嘛，是的这样可以解决问题，但是你有没有想过如果该View有背景图，结果你加了个Padding ，View的背景图变形了，这种情况下通过加Padding加大点击范围的方案就行不通了，如何破解？其实很简单，稍微懂点脑筋就把这个问题解决了，我们给这个小按钮外围包裹一个LinearLayout或RelativeLayout，当我们点击外围的LinearLayout或RelativeLayout的时候把这个事件传递给小按钮问题立马就解决了关键代码: public class FatArrowView extends RelativeLayout { //拦截事件 @Override public boolean onInterceptTouchEvent(MotionEvent ev) {（ http://www.my516.com） Log.v(TAG,"onInterceptTouchEvent start..."); return true; } //把事件分发给我们的子View CheckBox @Override

css样式

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1 <!DOCTYPE html> 2  3 <html lang="en"> 4 <head> 5 <meta charset="utf-8"> 6 <title>学习css</title> 7  style必须在head标签内 8 9 一.添加方法： 10 行内添加：标签内设置属性 11 内嵌添加：引用选择器设置样式 12 单独文件添加：通过链接外部文件设置样式 13 14 优先级：离元素就近原则行内>内嵌>单独(链接)>浏览器默认样式 15 16 二.选择器类型：以下7种用法 17 标签选择器：与标签同名，如：body{}，div{}，p{}... 18 class选择器：即类别选择器，通过class属性值引用，以点.名称{}引用，如：.one{},.two{}... 19 id选择器：具有唯一性，通过id属性值引用，一般只引用一次，以#名称{}引用，如：#one{},#two{}... 20 嵌套声明：标签内在嵌套标签，格式标签空格标签{}，如：p span{} 21 集体声明：多个标签一起引用，格式标签逗号标签{}，如：h1,p{} 22 全局声明：全部标签一起引用，格式用*{}代表全部，可以清除浏览器默认样式，如：*{} 23 混合：1.多个class选择器混用

Does the <html> element have a default margin or padding in any browser, since normalize.css doesn't reset it?

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I'm using normalize.css , and I saw that it doesn't reset margins or padding for the <html> element. Since I assume they've done their research I was wondering: does the <html> element have a default margin or padding in any browser? Is it right of me to assume that it doesn't and that this is why normalize.css doesn't reset it? The <html> tag does not have any CSS rules automatically applied to it. You can apply styles if you like, but the only time I've ever done it is to get 100% height and width. Default styling for each browser: http://mxr.mozilla.org/mozilla-central/source/layout/style

web前端入门到实战：五个最新的CSS特性以及如何使用它们

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虽然CSS简单，但CSS是一门非常有意思的语言，CSS每年都有变化，而且都有不同的博主都在不同的时间段总结一些CSS的新特性。虽然这些新特性无法立刻得到众多浏览器的支持，但总是随着时间的发展，这些特性都会得到浏览器的支持。哪怕未得到支持，也有一些方法让浏览器支持，比如最为出外的 cssnext ，就可以让很多未来的CSS特性就立马使用，并且不用花太多时间来考虑浏览器的兼容性。接下来要介绍的五个CSS新特性是： CSS Display Module Level 3 ： display:contents CSS Conditional Rules Module Level 3 ： @support(...){...} CSS Overscroll Behavior Module Level 1 ： overscroll-behavior: contain CSS Selectors Module Level 4 ： :focus-within ， :placeholder-shown CSS Containment Module Level 1 ： contain:paint 这些CSS特性，估计有些同学已经接触过了，如果你未接触过，建议你继续跟随着下面的步骤继续往下阅读。案例：创建一个新闻提要（Newsfeed）通过一个新闻提要为例

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