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HomeWeb Front-enduni-appuniapp sets the control to display in full screen

Uniapp is currently a very popular cross-platform development framework. Using Uniapp greatly improves efficiency when developing apps. During the development process, we often need to set certain controls to be displayed in full screen. The following article will introduce in detail how Uniapp sets controls to be displayed in full screen.

In Uniapp, in order to display certain controls in full screen, we need to understand some basic layout knowledge and some common control properties. The following will be introduced in sequence:

  1. Commonly used layout methods

Currently, the commonly used layout methods in Uniapp include flex, grid, position, absolute, etc. Among them, flex and grid are commonly used for page layout, list layout, etc., while position and absolute are commonly used for element positioning and hierarchical control. Here we will use flex layout as an example to introduce how to achieve full-screen display of controls.

  1. Basic operations of flex layout

In Uniapp, we can set display:flex and related align-items, justify-content and other attributes in the parent element , to control the layout and position of child elements. The following is the basic code of flex layout:

<template>
  <div class="container">
    <div class="item">
      子元素1
    </div>
    <div class="item">
      子元素2
    </div>
  </div>
</template>
<style>
  .container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
  }
  .item {
    width: 100px;
    height: 100px;
    background-color: #aaa;
    margin: 10px;
  }
</style>

In the above code, we first set the container to flex layout, and then set the align-items and justify-content attributes to control the sub-elements in the container respectively. vertically and horizontally centered. At the same time, we set a width and height for the child elements, and in order to allow multiple child elements to be displayed in one line, we used the flex-wrap attribute.

  1. Realize full-screen display of controls

After having basic layout knowledge, we can start to implement full-screen display of controls. In Uniapp, we can display the control in full screen by setting the width and height to 100%. Of course, we need to set the parent element to flex layout and set the relevant alignment and centering properties. The following is a specific example:

<template>
  <div class="container">
    <div class="item">
      子元素1
    </div>
    <div class="item full-screen">
      子元素2
    </div>
  </div>
</template>
<style>
  .container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
  }
  .item {
    width: 200px;
    height: 100px;
    background-color: #aaa;
    margin: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }
  .full-screen {
    width: 100%;
    height: 100%;
  }
</style>

In the above code, we first set a child element with a width of 200px and a height of 100px. Secondly, we set a container and set it to flex layout. Then, we set a child element with a width of 100% and a height of 100%, and set its class to full-screen. Finally, we set the width and height to 100% for the full-screen class in the style. After doing this, we can set child element 2 to full screen.

Summary

Through the introduction of this article, I believe that readers have a certain understanding of how to set the full-screen display of controls in Uniapp. It should be noted that implementing full-screen control is not static, because the needs of each project may be different. During the development process, we need to flexibly use layout methods and control properties according to actual needs to achieve the results we want.

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