Make back button work in CaptivePortalLogin app like a web browser.

Users will be using the app to navigate web pages like they are used to in
web browsers, so the back button should act similarly.  There also isn't
an in-app back button so this adds essentially necessary functionality.

bug:16397616
Change-Id: Idd73d4a048d79e56bf981a8f477336f00eaafc3b

1 files changed, 10 insertions, 0 deletions

diff --git a/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java b/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java
index 2c1db02..09525b2 100644
--- a/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java
+++ b/packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java
@@ -97,6 +97,16 @@ public class CaptivePortalLoginActivity extends Activity {
     }
 
     @Override
+    public void onBackPressed() {
+        WebView myWebView = (WebView) findViewById(R.id.webview);
+        if (myWebView.canGoBack()) {
+            myWebView.goBack();
+        } else {
+            super.onBackPressed();
+        }
+    }
+
+    @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
         if (id == R.id.action_use_network) {