[Android] 화면 캡처 방지

업무의 배경:

- 화면 캡처를 방지할 필요가 있다.

 

핵심 코드

        //Activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);// 캡처 방지 설정
        //Activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE); // 캡처 방지 해제
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);// 캡처 방지 설정
        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE); // 캡처 방지 해제

 

구현방법:

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btnCaptureEnable"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:text="캡처 방지 활성화"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/btnCaptureDisable"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:layout_marginTop="28dp"
        android:text="캡처 방지 비활성화"
        app:layout_constraintStart_toEndOf="@+id/btnCaptureEnable"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

 

MainActivity.java

package com.example.mydatabaseapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;

import com.example.mydatabaseapplication.data.MySharedPreferences;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        Button btnCaptureEnable = findViewById(R.id.btnCaptureEnable);      //캡처 방지 활성화
        Button btnCaptureDisable = findViewById(R.id.btnCaptureDisable);    //캡처 방지 비활성화

        btnCaptureEnable.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);// 캡처 방지 설정

            }
        });

        btnCaptureDisable.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE); // 캡처 방지 해제
            }
        });

    }
}

 

구현 결과:

프로젝트 코드

MyDataBaseApplication.7z

9.64MB

 

참고자료:

[1] https://3001ssw.tistory.com/202?category=968825