DO NOT MERGE Disable overlays while installer is resumed

The install button can be disabled for other reasons, hence we have to
store the enabled state independent of the resumed/paused state.

Test: gts-tradefed run gts-dev -m PackageInstallerTapjacking

Bug: 35056974
Change-Id: I2effa0f5afacfaed217a030550a778e32912cfbb
(cherry picked from commit 287d1d11a321040948d6c12e48fa303eed3c4859)

1 files changed, 23 insertions, 2 deletions

diff --git a/src/com/android/packageinstaller/PackageInstallerActivity.java b/src/com/android/packageinstaller/PackageInstallerActivity.java
index 868872a9..7cf5189b 100644
--- a/src/com/android/packageinstaller/PackageInstallerActivity.java
+++ b/src/com/android/packageinstaller/PackageInstallerActivity.java
@@ -16,7 +16,6 @@
 */
 package com.android.packageinstaller;
 
-import android.app.Activity;
 import android.app.ActivityManagerNative;
 import android.app.AlertDialog;
 import android.app.Dialog;
@@ -52,6 +51,8 @@ import android.widget.Button;
 import android.widget.TabHost;
 import android.widget.TextView;
 
+import com.android.packageinstaller.permission.ui.OverlayTouchActivity;
+
 import java.io.File;
 import java.util.List;
 
@@ -65,7 +66,8 @@ import java.util.List;
  * Based on the user response the package is then installed by launching InstallAppConfirm
  * sub activity. All state transitions are handled in this activity
  */
-public class PackageInstallerActivity extends Activity implements OnCancelListener, OnClickListener {
+public class PackageInstallerActivity extends OverlayTouchActivity implements OnCancelListener,
+        OnClickListener {
     private static final String TAG = "PackageInstaller";
 
     private int mSessionId = -1;
@@ -583,6 +585,25 @@ public class PackageInstallerActivity extends Activity implements OnCancelListen
         }
     }
 
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        if (mOk != null) {
+            mOk.setEnabled(mOkCanInstall);
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+
+        if (mOk != null) {
+            // Don't allow the install button to be clicked as there might be overlays
+            mOk.setEnabled(false);
+        }
+    }
+
     /** Get the ApplicationInfo for the calling package, if available */
     private ApplicationInfo getSourceInfo() {
         String callingPackage = getCallingPackage();