Flutter: disable screenshot capture for app

Question

I am making a Flutter app and I need to make sure the user is not able to capture screenshot of the app (any screen). Is there any way to achieve this in Flutter or do I nee

Answer 1

What worked for me was writing the below code in MainActivity.java file.

@Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
  }

and importing these packages!

import android.view.WindowManager; 
import android.view.WindowManager.LayoutParams;
import android.os.Bundle; // required for onCreate parameter

Answer 2

Screenshots can be prevented very easily by following below two steps.

I am using VS code.

Step 1 Open the file "mainActivity.kt" using the path android\app\src\main\kotlin\com\example\auth_email\MainActivity.kt

Step 2 Add the two lines

(a) import android.view.WindowManager.LayoutParams; 

(b) getWindow().addFlags(LayoutParams.FLAG_SECURE); in MainActivity: FlutterActivity() section

Restart the app

enter image description here

Answer 3

This works for iOS. In your Runner > AppDelegate.m:

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  [GeneratedPluginRegistrant registerWithRegistry:self];
  // Override point for customization after application launch.
  return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

- (void)applicationWillResignActive:(UIApplication *)application{
    self.window.hidden = YES;
}

- (void)applicationDidBecomeActive:(UIApplication *)application{
    self.window.hidden = NO;
}

@end

Answer 4

You could maybe listen for the screenshot keys on iOS and when the combination is being pressed blacken the screen.

Answer 5

If you are using kotlin

open MainActivity.kt

Add below code at end of imports

import android.view.WindowManager.LayoutParams

Add below code at end of super.onCreate(savedInstanceState)

window.addFlags(LayoutParams.FLAG_SECURE)

Its done.

Answer 6

1. Locate your MainActivity class inside the embedded android project dir in your Flutter Project
2. Add the following import to your main activity class: import android.view.WindowManager.LayoutParams;
3. Add the following line to your MainActivity's onCreate method: getWindow().addFlags(LayoutParams.FLAG_SECURE);