[Fingerprint] Show skip button during SUW

Show a skip button during enrolling in case the user entered the flow
accidentally. The skip button will send the result code RESULT_SKIP,
which is equal to RESULT_FIRST_USER + 1, back to the starting
activity.

Bug: 22666389
Change-Id: I230b04e5150214c31536ac282d56b7b490c85ac1

4 files changed, 16 insertions, 4 deletions

diff --git a/src/com/android/settings/fingerprint/FingerprintEnrollBase.java b/src/com/android/settings/fingerprint/FingerprintEnrollBase.java
index 233f774..430f220 100644
--- a/src/com/android/settings/fingerprint/FingerprintEnrollBase.java
+++ b/src/com/android/settings/fingerprint/FingerprintEnrollBase.java
@@ -48,6 +48,12 @@ public class FingerprintEnrollBase extends Activity implements View.OnClickListe
      */
     protected static final int RESULT_FINISHED = RESULT_FIRST_USER;
 
+    /**
+     * Used by the enrolling screen during setup wizard to skip over setting up fingerprint, which
+     * will be useful if the user accidentally entered this flow.
+     */
+    protected static final int RESULT_SKIP = RESULT_FIRST_USER + 1;
+
     protected byte[] mToken;
 
     @Override
diff --git a/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java b/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java
index 1d9d1c5..bbed42c 100644
--- a/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java
+++ b/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java
@@ -76,6 +76,9 @@ public class FingerprintEnrollFindSensor extends FingerprintEnrollBase {
             if (resultCode == RESULT_FINISHED) {
                 setResult(RESULT_FINISHED);
                 finish();
+            } else if (resultCode == RESULT_SKIP) {
+                setResult(RESULT_SKIP);
+                finish();
             } else {
                 FingerprintManager fpm = getSystemService(FingerprintManager.class);
                 int enrolled = fpm.getEnrolledFingerprints().size();
diff --git a/src/com/android/settings/fingerprint/FingerprintEnrollFinish.java b/src/com/android/settings/fingerprint/FingerprintEnrollFinish.java
index 7ce340d..29f14d7 100644
--- a/src/com/android/settings/fingerprint/FingerprintEnrollFinish.java
+++ b/src/com/android/settings/fingerprint/FingerprintEnrollFinish.java
@@ -17,6 +17,7 @@
 package com.android.settings.fingerprint;
 
 import android.content.Context;
+import android.content.Intent;
 import android.hardware.fingerprint.Fingerprint;
 import android.hardware.fingerprint.FingerprintManager;
 import android.os.Bundle;
@@ -62,7 +63,9 @@ public class FingerprintEnrollFinish extends FingerprintEnrollBase {
     @Override
     public void onClick(View v) {
         if (v.getId() == R.id.add_another_button) {
-            startActivity(getEnrollingIntent());
+            final Intent intent = getEnrollingIntent();
+            intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
+            startActivity(intent);
             finish();
         }
         super.onClick(v);
diff --git a/src/com/android/settings/fingerprint/SetupFingerprintEnrollEnrolling.java b/src/com/android/settings/fingerprint/SetupFingerprintEnrollEnrolling.java
index 37c13e8..0de1718 100644
--- a/src/com/android/settings/fingerprint/SetupFingerprintEnrollEnrolling.java
+++ b/src/com/android/settings/fingerprint/SetupFingerprintEnrollEnrolling.java
@@ -52,8 +52,7 @@ public class SetupFingerprintEnrollEnrolling extends FingerprintEnrollEnrolling
 
         final NavigationBar navigationBar = getNavigationBar();
         navigationBar.setNavigationBarListener(this);
-        // Enrolling screen auto-advances once the fingerprint is added
-        navigationBar.getNextButton().setEnabled(false);
+        navigationBar.getNextButton().setText(R.string.skip_label);
     }
 
     @Override
@@ -68,6 +67,7 @@ public class SetupFingerprintEnrollEnrolling extends FingerprintEnrollEnrolling
 
     @Override
     public void onNavigateNext() {
-        onNextButtonClick();
+        setResult(RESULT_SKIP);
+        finish();
     }
 }