启动画面不出现 [英] Splash screen does not appear

问题描述

我编写了清单文件来显示它.

I wrote the manifest file to show it.

Manifest-Version: 1.0
Main-Class: app.App
SplashScreen-Image: images/splash.png

当我编写下面的代码并运行 jar 文件时，

and when I wrote the below code and ran the jar file,

final SplashScreen splash = SplashScreen.getSplashScreen();

if (splash == null) {
    System.out.println("null");
    return;
}

Graphics2D g = splash.createGraphics();

if (g == null) {
    System.out.println("null");
    return;
}

我总是收到null"消息.我错过了什么?

I always get "null" message. What am I missing?

推荐答案

检查生成的 jar 中的 MANIFEST.MF 文件是否包含 SplashScreen-Image 条目，如果没有尝试更正项目中现有的清单文件，不要忘记添加行尾.

Check if MANIFEST.MF file inside generated jar contains SplashScreen-Image entry, if not try to correct your existing manifest file inside your project and don't forget to add end of line to it.

来自 Oracle 修改清单文件:警告:用于创建清单的文本文件必须以换行符或回车符结尾.如果最后一行没有以换行符或回车符结束，将不会被正确解析.

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