Prevent Screen Shot in All Activities

Mahesh

Source: https://www.geeksforgeeks.org/how-to-prevent-screenshot-or-screen-recorder-in-android/

Method 1

In the MainActivity.java file simply add the following code and it will prevent taking Screenshot in Android App.

getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE,

                 WindowManager.LayoutParams.FLAG_SECURE);

Below is the complete code for the MainActivity.java file.

import androidx.appcompat.app.AppCompatActivity;

  

import android.os.Bundle;

import android.view.WindowManager;

  

public class MainActivity extends AppCompatActivity {

  

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

  

        // Adding this line will prevent taking screenshot in your app

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE,

                             WindowManager.LayoutParams.FLAG_SECURE);

         

    }

}

Method 2

Method 1 is only appropriate for a single activity but what’s the solution for block screenshot for all the activities. We are going to discuss this in method 2. First of all, make a Custom Application class and add a registerActivityLifecycleCallbacks. Then register it in your manifest.

Step 1: Here write the given code in the MyApplicationContext.java file

import android.app.Activity;

import android.app.Application;

import android.content.Context;

import android.os.Bundle;

import android.view.WindowManager;

  

public class MyApplicationContext extends Application {

    private Context context;

    public void onCreate() {

        super.onCreate();

        context = getApplicationContext();

        setupActivityListener();

    }

  

    private void setupActivityListener() {

        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {

            @Override

            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {

                activity.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);            }

            @Override

            public void onActivityStarted(Activity activity) {

            }

            @Override

            public void onActivityResumed(Activity activity) {

  

            }

            @Override

            public void onActivityPaused(Activity activity) {

  

            }

            @Override

            public void onActivityStopped(Activity activity) {

            }

            @Override

            public void onActivitySaveInstanceState(Activity activity, Bundle outState) {

            }

            @Override

            public void onActivityDestroyed(Activity activity) {

            }

        });

    }

}

Step 2: Register it in the manifest file like the following

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:name=".MyApplicationContext"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>