Step by Step Implementation
Step 1: Create a New Project
To create a new project in Android Studio please refer to
How to Create/Start a New Project in Android Studio. Note that select
Java as the programming language.
Step 2: Working with the activity_main.xml file
Navigate to the
app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the
activity_main.xml file. We will create a simple
TextView inside the
activity_main.xml file.
<?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">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Preventing App from Taking Screeenshot"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
android:textStyle="bold"
android:textSize="18sp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout> |
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>
hahah
