去掉Android is starting...

frameworks\base\core\res\res\values\strings.xml

    Android is starting\u2026

packages\apps\Settings\src\com\android\settings\FallbackHome.java

com/android/settings/FallbackHome.java

private final Runnable mProgressTimeoutRunnable = () -> {
        View v = getLayoutInflater().inflate(
                R.layout.fallback_home_finishing_boot, null /* root */);
        setContentView(v);
        v.setAlpha(0f);
        v.animate()
                .alpha(1f)
                .setDuration(500)
                .setInterpolator(AnimationUtils.loadInterpolator(
                        this, android.R.interpolator.fast_out_slow_in))
                .start();
        getWindow().addFlags(LayoutParams.FLAG_KEEP_SCREEN_ON);
    };

layout/fallback_home_finishing_boot.xml