Improves flow for fingerprint

This reduces the # of screens, and makes the backup lock choice
for fingerprint more obvious that it is a backup.

bug:26377096
Change-Id: I4e75e1f3302c286587de106bcdf43537bda03390

res/values/strings.xml

@@ -1018,6 +1018,15 @@
     <!-- Summary specifying that this is the current screen lock setting [CHAR LIMIT=45] -->
     <string name="current_screen_lock">Current screen lock</string>
 
+    <!-- Title for preference that guides the user through creating a backup unlock pattern for fingerprint [CHAR LIMIT=45]-->
+    <string name="fingerprint_unlock_set_unlock_pattern">Fingerprint + Pattern</string>
+
+    <!-- Title for preference that guides the user through creating a backup unlock PIN for fingerprint [CHAR LIMIT=45]-->
+    <string name="fingerprint_unlock_set_unlock_pin">Fingerprint + PIN</string>
+
+    <!-- Title for preference that guides the user through creating a backup unlock password for fingerprint [CHAR LIMIT=45]-->
+    <string name="fingerprint_unlock_set_unlock_password">Fingerprint + Password</string>
+
     <!-- Summary for preference that has been disabled by because of the DevicePolicyAdmin, or because device encryption is enabled, or because there are credentials in the credential storage [CHAR LIMIT=50] -->
     <string name="unlock_set_unlock_disabled_summary">Disabled by administrator, encryption policy, or credential storage</string>
 

src/com/android/settings/ChooseLockGeneric.java

@@ -300,6 +300,7 @@ public class ChooseLockGeneric extends SettingsActivity {
                 }
                 addPreferencesFromResource(R.xml.security_settings_picker);
                 disableUnusablePreferences(quality, hideDisabledPrefs);
+                updatePreferenceText();
                 updateCurrentPreference();
                 updatePreferenceSummaryIfNeeded();
             } else {
@@ -307,6 +308,19 @@ public class ChooseLockGeneric extends SettingsActivity {
             }
         }
 
+        private void updatePreferenceText() {
+            if (mForFingerprint) {
+                Preference pattern = findPreference(KEY_UNLOCK_SET_PATTERN);
+                pattern.setTitle(R.string.fingerprint_unlock_set_unlock_pattern);
+
+                Preference pin = findPreference(KEY_UNLOCK_SET_PIN);
+                pin.setTitle(R.string.fingerprint_unlock_set_unlock_pin);
+
+                Preference password = findPreference(KEY_UNLOCK_SET_PASSWORD);
+                password.setTitle(R.string.fingerprint_unlock_set_unlock_password);
+            }
+        }
+
         private void updateCurrentPreference() {
             String currentKey = getKeyForCurrent();
             Preference preference = findPreference(currentKey);

src/com/android/settings/fingerprint/FingerprintEnrollIntroduction.java

@@ -18,11 +18,13 @@ package com.android.settings.fingerprint;
 
 import android.app.admin.DevicePolicyManager;
 import android.content.Intent;
+import android.hardware.fingerprint.FingerprintManager;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.view.View;
 
 import com.android.internal.logging.MetricsLogger;
+import com.android.settings.ChooseLockGeneric;
 import com.android.settings.ChooseLockSettingsHelper;
 import com.android.settings.HelpUtils;
 import com.android.settings.R;
@@ -32,6 +34,9 @@ import com.android.settings.R;
  */
 public class FingerprintEnrollIntroduction extends FingerprintEnrollBase {
 
+    private static final int CHOOSE_LOCK_GENERIC_REQUEST = 1;
+    private static final int FINGERPRINT_FIND_SENSOR_REQUEST = 2;
+
     private boolean mHasPassword;
 
     @Override
@@ -41,6 +46,12 @@ public class FingerprintEnrollIntroduction extends FingerprintEnrollBase {
         setHeaderText(R.string.security_settings_fingerprint_enroll_introduction_title);
         findViewById(R.id.cancel_button).setOnClickListener(this);
         findViewById(R.id.learn_more_button).setOnClickListener(this);
+        final int passwordQuality = new ChooseLockSettingsHelper(this).utils()
+                .getActivePasswordQuality(UserHandle.myUserId());
+        updatePasswordQuality();
+    }
+
+    private void updatePasswordQuality() {
         final int passwordQuality = new ChooseLockSettingsHelper(this).utils()
                 .getActivePasswordQuality(UserHandle.myUserId());
         mHasPassword = passwordQuality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
@@ -48,19 +59,37 @@ public class FingerprintEnrollIntroduction extends FingerprintEnrollBase {
 
     @Override
     protected void onNextButtonClick() {
-        Intent intent;
         if (!mHasPassword) {
             // No fingerprints registered, launch into enrollment wizard.
-            intent = getOnboardIntent();
+            launchChooseLock();
         } else {
             // Lock thingy is already set up, launch directly into find sensor step from wizard.
-            intent = getFindSensorIntent();
+            launchFindSensor(null);
         }
-        startActivityForResult(intent, 0);
     }
 
-    protected Intent getOnboardIntent() {
+    private void launchChooseLock() {
-        return new Intent(this, FingerprintEnrollOnboard.class);
+        Intent intent = getChooseLockIntent();
+        long challenge = getSystemService(FingerprintManager.class).preEnroll();
+        intent.putExtra(ChooseLockGeneric.ChooseLockGenericFragment.MINIMUM_QUALITY_KEY,
+                DevicePolicyManager.PASSWORD_QUALITY_SOMETHING);
+        intent.putExtra(ChooseLockGeneric.ChooseLockGenericFragment.HIDE_DISABLED_PREFS, true);
+        intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, true);
+        intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE, challenge);
+        intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_FOR_FINGERPRINT, true);
+        startActivityForResult(intent, CHOOSE_LOCK_GENERIC_REQUEST);
+    }
+
+    private void launchFindSensor(byte[] token) {
+        Intent intent = getFindSensorIntent();
+        if (token != null) {
+            intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, token);
+        }
+        startActivityForResult(intent, FINGERPRINT_FIND_SENSOR_REQUEST);
+    }
+
+    protected Intent getChooseLockIntent() {
+        return new Intent(this, ChooseLockGeneric.class);
     }
 
     protected Intent getFindSensorIntent() {
@@ -70,8 +99,15 @@ public class FingerprintEnrollIntroduction extends FingerprintEnrollBase {
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (resultCode == RESULT_FINISHED) {
-            setResult(RESULT_OK);
+            if (requestCode == FINGERPRINT_FIND_SENSOR_REQUEST) {
-            finish();
+                setResult(RESULT_OK);
+                finish();
+            } else if (requestCode == CHOOSE_LOCK_GENERIC_REQUEST) {
+                updatePasswordQuality();
+                byte[] token = data.getByteArrayExtra(
+                        ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
+                launchFindSensor(token);
+            }
         } else {
             super.onActivityResult(requestCode, resultCode, data);
         }

src/com/android/settings/fingerprint/SetupFingerprintEnrollIntroduction.java

@@ -23,6 +23,7 @@ import android.widget.Button;
 
 import com.android.internal.logging.MetricsLogger;
 import com.android.settings.R;
+import com.android.settings.SetupChooseLockGeneric;
 import com.android.settings.SetupWizardUtils;
 import com.android.setupwizardlib.view.NavigationBar;
 
@@ -30,8 +31,8 @@ public class SetupFingerprintEnrollIntroduction extends FingerprintEnrollIntrodu
         implements NavigationBar.NavigationBarListener {
 
     @Override
-    protected Intent getOnboardIntent() {
+    protected Intent getChooseLockIntent() {
-        final Intent intent = new Intent(this, SetupFingerprintEnrollOnboard.class);
+        Intent intent = new Intent(this, SetupChooseLockGeneric.class);
         SetupWizardUtils.copySetupExtras(getIntent(), intent);
         return intent;
     }