Merge "Pass null looper if the looper is not prepared in the calling thread" into main

src/com/android/settings/accessibility/KeyboardVibrationTogglePreferenceController.java

@@ -27,6 +27,7 @@ import android.content.Context;
 import android.database.ContentObserver;
 import android.net.Uri;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.VibrationAttributes;
 import android.os.Vibrator;
 import android.provider.Settings;
@@ -69,7 +70,8 @@ public class KeyboardVibrationTogglePreferenceController extends TogglePreferenc
     public KeyboardVibrationTogglePreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
         mVibrator = context.getSystemService(Vibrator.class);
-        mContentObserver = new ContentObserver(new Handler(/* async= */ true)) {
+        Handler handler = Looper.myLooper() != null ? new Handler(/* async= */ true) : null;
+        mContentObserver = new ContentObserver(handler) {
             @Override
             public void onChange(boolean selfChange, Uri uri) {
                 if (uri.equals(MAIN_VIBRATION_SWITCH_URI)) {

src/com/android/settings/accessibility/VibrationMainSwitchPreferenceController.java

@@ -23,6 +23,7 @@ import android.content.Context;
 import android.database.ContentObserver;
 import android.net.Uri;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.VibrationAttributes;
 import android.os.Vibrator;
 import android.provider.Settings;
@@ -49,7 +50,8 @@ public class VibrationMainSwitchPreferenceController extends SettingsMainSwitchP
     public VibrationMainSwitchPreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
         mVibrator = context.getSystemService(Vibrator.class);
-        mSettingObserver = new ContentObserver(new Handler(/* async= */ true)) {
+        Handler handler = Looper.myLooper() != null ? new Handler(/* async= */ true) : null;
+        mSettingObserver = new ContentObserver(handler) {
             @Override
             public void onChange(boolean selfChange, Uri uri) {
                 updateState(mSwitchPreference);

src/com/android/settings/accessibility/VibrationPreferenceConfig.java

@@ -27,6 +27,7 @@ import android.database.ContentObserver;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.VibrationAttributes;
 import android.os.VibrationEffect;
 import android.os.Vibrator;
@@ -165,7 +166,7 @@ public abstract class VibrationPreferenceConfig {
 
         /** Creates observer for given preference. */
         public SettingObserver(VibrationPreferenceConfig preferenceConfig) {
-            super(new Handler(/* async= */ true));
+            super(Looper.myLooper() != null ? new Handler(/* async= */ true) : null);
             mUri = Settings.System.getUriFor(preferenceConfig.getSettingKey());
 
             if (preferenceConfig.isRestrictedByRingerModeSilent()) {

src/com/android/settings/accessibility/VibrationRampingRingerTogglePreferenceController.java

@@ -21,6 +21,7 @@ import android.database.ContentObserver;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.Vibrator;
 import android.provider.DeviceConfig;
 import android.provider.Settings;
@@ -74,7 +75,8 @@ public class VibrationRampingRingerTogglePreferenceController
         mRingVibrationPreferenceConfig = new RingVibrationPreferenceConfig(context);
         mRingSettingObserver = new VibrationPreferenceConfig.SettingObserver(
                 mRingVibrationPreferenceConfig);
-        mSettingObserver = new ContentObserver(new Handler(/* async= */ true)) {
+        Handler handler = Looper.myLooper() != null ? new Handler(/* async= */ true) : null;
+        mSettingObserver = new ContentObserver(handler) {
             @Override
             public void onChange(boolean selfChange, Uri uri) {
                 updateState(mPreference);