版权声明：未经本人同意不得私自转载 https://blog.csdn.net/qq_40190624/article/details/88398924
如果是全局导航背景设置
app.json
"window": {
"navigationBarBackgroundColor": "#405f80"
},
如果是单页面设置:
xxx.json
{
"navigationBarBackgroundColor": "#b3d4db"
}