iOS开发Flutter探索-引用本地图片资源(5)
2020-06-16 本文已影响0人
泽泽伐木类
前言
关于引用本地图片资源主要分为以下2种情况:
1.当iOS端和Android端需要区别显示的时候,我们需要在Xcode和Android Studio 中分配添加响应图片;
2.iOS和Android共同资源,需要在fultter项目配置文件中添加;
关于在Xcode中如何添加图片资源这里就不赘述了,今天主要介绍一下在Android 项目端 和 flutter中如何添加;
Android端添加图片资源
截屏2020-06-15下午11.50.32.png图片资源路径
android[xxx_xxx_xxx]/app/src/main/res/
下配置app_icon,打开
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.flutterappzeze">
<!-- io.flutter.app.FlutterApplication is an android.app.Application that
calls FlutterMain.startInitialization(this); in its onCreate method.
In most cases you can leave this as-is, but you if you want to provide
additional functionality it is fine to subclass or reimplement
FlutterApplication and put your custom class here. -->
<application
android:name="io.flutter.app.FlutterApplication"
android:label="flutterappzeze" // 名称 display_name
android:icon="@mipmap/ic_launcher"> //app_icon图标
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
配置launch_img,打开launch_background.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Modify this file to customize your launch splash screen -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@android:color/white" />
<!-- You can insert your own image assets here -->
<item>
//这里配置启动图
<bitmap
android:gravity="center"
android:src="@mipmap/launch_image" />
</item>
</layer-list>
flutter添加图片资源
截屏2020-06-16上午12.06.10.png这里是在
pubspec.yaml
中配置添加
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets: //固定格式写法
- images/a_dot_burr.png //这里就是引入了一张图片资源
- images/a_dot_ham.png
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
我们在当前文件的同级目录command+N
新建一个名字为images
的Directory
文件夹,并将公用的图片资源放入这里。
还有一种简单的方式就是直接在pubspec.yaml
文件中
# To add assets to your application, add an assets section, like this:
assets:
- images/
# An image asset can refer to one or more resolution-specific "variants", see
就可以了,不需要将每张图片的名称追加到这里,这要确保在images下就可以了。
项目中使用
class _PendCourseState extends State<PendCourse> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('待上课程'),
),
body: Center(
child: Image(image: AssetImage('images/a_dot_burr.png'),width: 100,height: 80,),
),
);
}
}
总结
本篇文章并没有什么难道,主要就是梳理了一下flutter项目中的图片资源的引用方式和使用方式。下一步我将开始详细的撩一下ListView
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