1 files changed, 78 insertions, 0 deletions
diff --git a/src/com/android/launcher3/lineage/LineageUtils.java b/src/com/android/launcher3/lineage/LineageUtils.java
new file mode 100644
index 000000000..75a9252dd
--- /dev/null
+++ b/src/com/android/launcher3/lineage/LineageUtils.java
@@ -0,0 +1,78 @@
+package com.android.launcher3.lineage;
+
+import android.app.KeyguardManager;
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.hardware.biometrics.BiometricPrompt;
+import android.os.CancellationSignal;
+import android.os.Handler;
+import android.os.Looper;
+import android.widget.Toast;
+
+import com.android.launcher3.R;
+
+public class LineageUtils {
+
+    /**
+     * Shows authentication screen to confirm credentials (pin, pattern or password) for the current
+     * user of the device.
+     *
+     * @param context The {@code Context} used to get {@code KeyguardManager} service
+     * @param title the {@code String} which will be shown as the pompt title
+     * @param successRunnable The {@code Runnable} which will be executed if the user does not setup
+     *                        device security or if lock screen is unlocked
+     */
+    public static void showLockScreen(Context context, String title, Runnable successRunnable) {
+        if (hasSecureKeyguard(context)) {
+            final BiometricPrompt.AuthenticationCallback authenticationCallback =
+                    new BiometricPrompt.AuthenticationCallback() {
+                        @Override
+                        public void onAuthenticationSucceeded(
+                                    BiometricPrompt.AuthenticationResult result) {
+                            successRunnable.run();
+                        }
+
+                        @Override
+                        public void onAuthenticationError(int errorCode, CharSequence errString) {
+                            //Do nothing
+                        }
+            };
+
+            final BiometricPrompt.Builder builder = new BiometricPrompt.Builder(context)
+                    .setTitle(title);
+
+            final KeyguardManager keyguardManager = context.getSystemService(KeyguardManager.class);
+
+            if (keyguardManager.isDeviceSecure()) {
+                builder.setDeviceCredentialAllowed(true);
+            }
+
+            final BiometricPrompt bp = builder.build();
+            final Handler handler = new Handler(Looper.getMainLooper());
+            bp.authenticate(new CancellationSignal(),
+                    runnable -> handler.post(runnable),
+                    authenticationCallback);
+        } else {
+            // Notify the user a secure keyguard is required for protected apps,
+            // but allow to set hidden apps
+            Toast.makeText(context, R.string.trust_apps_no_lock_error, Toast.LENGTH_LONG)
+                .show();
+            successRunnable.run();
+        }
+    }
+
+    public static boolean hasSecureKeyguard(Context context) {
+        final KeyguardManager keyguardManager = context.getSystemService(KeyguardManager.class);
+        return keyguardManager != null && keyguardManager.isKeyguardSecure();
+    }
+
+    public static boolean hasPackageInstalled(Context context, String pkgName) {
+        try {
+            ApplicationInfo ai = context.getPackageManager().getApplicationInfo(pkgName, 0);
+            return ai.enabled;
+        } catch (PackageManager.NameNotFoundException e) {
+            return false;
+        }
+    }
+}