splash screen doesnt show expo code example

Example: splash screen resolution app.json

"splash": {
        "backgroundColor": "#ffffff",
        "ldpi": "./assets/img/splashscreen.png",
        "mdpi": "./assets/img/splashscreen.png",
        "hdpi": "./assets/img/splashscreen.png",
        "xhdpi": "./assets/img/splashscreen.png",
        "xxhdpi": "./assets/img/splashscreen.png",
        "xxxhdpi": "./assets/img/splashscreen.png",
        "resizeMode": "contain"
      }