it violates the following Content Security Policy directive: "default-src 'self' http://example.com". Note that 'img-src' was not explicitly set, so 'default-src' is used as a fallback.

昨天再調試APP的時候，圖片無法顯示了，看了下控制台報錯信息，發現控制台報 it violates the following Content Security Policy directive: "default-src 'self' http://example.com". Note that 'img-src' was not explicitly set, so 'default-src' is used as a fallback. 這類的錯誤，在網上找了一些資料，發現是因為沒有設置img-src的緣故，在index.html中

<meta http-equiv="Content-Security-Policy" content="default-src *;img-src 'self' data: base64; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' 'unsafe-eval'"/>

添加，在default-src：*;后面添加

img-src 'self' data: base64;
之后，圖片成功顯示，問題解決。