flutter - 闪屏颜色在 flutter 中没有改变

Question

我是 Flutter 新手，还在练习

我正在创建启动画面，但启动画面的颜色没有改变

我的代码:

-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/black" />
    
        <!-- You can insert your own image assets here -->
        <!-- <item>
            <bitmap
                android:gravity="center"
                android:src="@mipmap/launch_image" />
        </item> -->
    </layer-list>

-main.dart

import 'package:flutter/material.dart';
import 'package:id_locker/Screens/HomeScreen.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: HomeScreen(),
    );
  }
}

-HomeScreen.dart

import 'package:flutter/material.dart';
import 'package:hexcolor/hexcolor.dart';

class HomeScreen extends StatefulWidget {
  const HomeScreen({Key? key}) : super(key: key);

  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  @override
  Widget build(BuildContext context) {
    return Container(
      decoration: BoxDecoration(color: HexColor("#2301FA")),
    );
  }
}

应该是黑屏，但还是白屏党卫军:

Answer 1

您还需要更改 drawable-v21 文件夹的 launch_background.xml 文件，与 drawable 文件夹相同。

改变

<item android:drawable="?android:colorBackground" />

您对 @android:color/black 所做的调整(或 @color/backgroudColor 用于自定义 colors.xml 文件);

<item android:drawable="@color/backgroudColor" />