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android: set the FLAG_SECURE flag preventing screenshots #1684

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android: set the FLAG_SECURE flag preventing screenshots #1684

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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Changelog

## [Unreleased]
- Android: prevent app window from appearing in screenshots or from being viewed on non-secure displays

## 4.32.0 [2022-03-16]
- Bundle BitBox02 firmware version v9.10.0
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6 changes: 5 additions & 1 deletion frontends/android/BitBoxApp/app/src/main/java/ch/shiftcrypto/bitboxapp/MainActivity.java
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Expand Up @@ -23,6 +23,7 @@
import android.os.Handler;
import android.os.Message;
import android.os.Bundle;
import android.view.WindowManager;
import android.webkit.CookieManager;
import android.webkit.JavascriptInterface;
import android.webkit.MimeTypeMap;
Expand Down Expand Up @@ -102,7 +103,10 @@ protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Util.log("lifecycle: onCreate");

getSupportActionBar().hide(); // hide title bar with app name.
// Hide title bar with app name.
getSupportActionBar().hide();
// Treat the content of the window as secure, preventing it from appearing in screenshots or from being viewed on non-secure displays.
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
setContentView(R.layout.activity_main);
final WebView vw = (WebView)findViewById(R.id.vw);
// For onramp iframe'd widgets like MoonPay.
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