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CRT Screen-Off v1.0.0 - Initial Release

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@Typongtv Typongtv released this 15 Oct 13:40
· 19 commits to main since this release
v1.0.0
1d6c9b5

CRT Screen-Off Animation v1.0.0

CyanogenMod-inspired CRT electron-beam sleep animation engine for modern Android (Android 13–16+).

Features & Highlights

  • 100% Rootless & Knox Safe: Zero root or framework hooks required; fully compliant with official Android Accessibility APIs.
  • Dual Physics Engines:
    • CyanogenMod-inspired CM7/CM9 ElectronBeam deflection sweep with dynamic vertical squish and horizontal beam zip.
    • Vintage Phosphor Overdrive tube simulation (Green P1, Amber P3, Blue P4, White, Cyan).
  • Hardware Accelerated: Native 120Hz AGSL fragment shaders executed directly on the GPU.
  • Zero Idle Drain: Dormant when not in use; no persistent background services or battery impact.
  • Quick Triggers: Supports Samsung Good Lock (One Hand Operation+), shortcuts, widgets, and ADB broadcasts.
  • Privacy First: 0 internet permissions declared in the manifest.

Caution

Hardware Advisory: Capacitive Phosphor Bleed 😜

When interacting with the settings dashboard, you may notice micro-static visual arcs tracing your fingertips across the AMOLED panel. Please remain calm—it is merely localized harmonic resonance between your screen glass and our virtual cathode-ray tube.

Just kidding! That’s my custom touch-static overlay at work. It's a purely aesthetic homage to the days when touching your TV screen gave you an electrostatic high-five and made the hairs on your forearm stand on end. No rubber-soled shoes required.

Installation & Android 13–16+ First-Time Setup Guide

Because this app is distributed directly via GitHub and utilizes Android's official Accessibility API, modern Android security layers require two quick one-time confirmations during installation:

1. Google Play Protect Warning

Google Play Protect actively flags APKs that are sideloaded outside the Google Play Store. Depending on your Android version and region, follow whichever option appears on your screen:

• Scenario A: Standard Warning ("Install anyway" is visible)

  1. On the Play Protect pop-up, tap "More details".
  2. Tap "Install anyway".

• Scenario B: Strict Block (No "Install anyway" option available)

If Google completely blocks the installation without an "Install anyway" button:

  1. Open the Google Play Store app.
  2. Tap your Profile icon (top-right) ➔ Tap Play Protect.
  3. Tap the ⚙️ gear icon in the top-right corner.
  4. Temporarily toggle OFF "Scan apps with Play Protect".
  5. Return to your file manager and install CRT-Screen-Off-v1.0.apk.
  6. (Recommended) Return to Play Protect settings and toggle scanning back ON.

Note on Safety: As verified in our open codebase and manifest, this application requests 0 internet permissions (android.permission.INTERNET is not present). The app physically cannot connect to any server, collect data, or transmit information off your device.

2. Accessibility Toggle Greyed Out? ("Restricted Setting")

On Android 13, 14, 15, and 16+, Android automatically greys out Accessibility toggles for all sideloaded APKs by default. Use either of these methods to unlock it:

• Method A: The 3-Dot App Info Shortcut (All Android Devices)

  1. On your home screen, long-press the CRT Screen-Off app icon and tap the ⓘ (App Info) button.
  2. Tap the three dots (⋮) in the top-right corner.
  3. Tap "Allow restricted settings" and confirm with your fingerprint or PIN.
  4. Now go to Settings ➔ Accessibility ➔ Installed apps ➔ CRT Screen-Off and toggle it ON.

• Method B: Samsung Galaxy (One UI) Settings Menu

  1. Go to: Settings ➔ Security and privacy.
  2. Tap Controls and alerts (or "More security settings").
  3. Tap Accessibility special access (or "Allow restricted settings").
  4. Turn on the toggle for CRT Screen-Off.
  5. Return to Accessibility to activate the service.
Assets 3
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