Use empty string instead of nullable for leak report email

Leak report email was set to be nullable in some modules and not
nullable in others. This was causing undeterministic build failures when
building SystemUI with gradle.
Removing nullable annotation from leak report email dependency and using
empty string instead of null.
Only setting the email in leak report email intent when the email string
is not null or empty.

Bug: 281537214
Test: full build: m -j

Change-Id: Ic798ae8aba76ba29f9ded8dd8a549fd4c31962a6

packages/SystemUI/src/com/android/systemui/Dependency.java

@@ -320,7 +320,6 @@ public class Dependency {
     @Inject @Main Lazy<Looper> mMainLooper;
     @Inject @Main Lazy<Handler> mMainHandler;
     @Inject @Named(TIME_TICK_HANDLER_NAME) Lazy<Handler> mTimeTickHandler;
-    @Nullable
     @Inject @Named(LEAK_REPORT_EMAIL_NAME) Lazy<String> mLeakReportEmail;
     @Inject @Main Lazy<Executor> mMainExecutor;
     @Inject @Background Lazy<Executor> mBackgroundExecutor;

packages/SystemUI/src/com/android/systemui/dagger/ReferenceSystemUIModule.java

@@ -23,8 +23,6 @@ import android.content.Context;
 import android.hardware.SensorPrivacyManager;
 import android.os.Handler;
 
-import androidx.annotation.Nullable;
-
 import com.android.internal.logging.UiEventLogger;
 import com.android.keyguard.KeyguardViewController;
 import com.android.systemui.battery.BatterySaverModule;
@@ -74,12 +72,12 @@ import com.android.systemui.statusbar.policy.SensorPrivacyController;
 import com.android.systemui.statusbar.policy.SensorPrivacyControllerImpl;
 import com.android.systemui.volume.dagger.VolumeModule;
 
-import javax.inject.Named;
-
 import dagger.Binds;
 import dagger.Module;
 import dagger.Provides;
 
+import javax.inject.Named;
+
 /**
  * A dagger module for injecting default implementations of components of System UI.
  *
@@ -115,9 +113,8 @@ public abstract class ReferenceSystemUIModule {
     @SysUISingleton
     @Provides
     @Named(LEAK_REPORT_EMAIL_NAME)
-    @Nullable
     static String provideLeakReportEmail() {
-        return null;
+        return "";
     }
 
     @Binds

packages/SystemUI/src/com/android/systemui/tv/TvSystemUIModule.java

@@ -23,8 +23,6 @@ import android.content.Context;
 import android.hardware.SensorPrivacyManager;
 import android.os.Handler;
 
-import androidx.annotation.Nullable;
-
 import com.android.internal.logging.UiEventLogger;
 import com.android.keyguard.KeyguardViewController;
 import com.android.systemui.dagger.ReferenceSystemUIModule;
@@ -75,13 +73,13 @@ import com.android.systemui.statusbar.policy.SensorPrivacyControllerImpl;
 import com.android.systemui.statusbar.tv.notifications.TvNotificationHandler;
 import com.android.systemui.volume.dagger.VolumeModule;
 
-import javax.inject.Named;
-
 import dagger.Binds;
 import dagger.Module;
 import dagger.Provides;
 import dagger.multibindings.IntoSet;
 
+import javax.inject.Named;
+
 /**
  * A TV specific version of {@link ReferenceSystemUIModule}.
  *
@@ -105,9 +103,8 @@ public abstract class TvSystemUIModule {
     @SysUISingleton
     @Provides
     @Named(LEAK_REPORT_EMAIL_NAME)
-    @Nullable
     static String provideLeakReportEmail() {
-        return null;
+        return "";
     }
 
     @Binds

packages/SystemUI/src/com/android/systemui/util/leak/LeakReporter.java

@@ -18,7 +18,6 @@ package com.android.systemui.util.leak;
 
 import static com.android.systemui.Dependency.LEAK_REPORT_EMAIL_NAME;
 
-import android.annotation.Nullable;
 import android.app.Notification;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
@@ -29,6 +28,7 @@ import android.content.Intent;
 import android.net.Uri;
 import android.os.Debug;
 import android.os.SystemProperties;
+import android.text.TextUtils;
 import android.util.Log;
 
 import androidx.core.content.FileProvider;
@@ -68,7 +68,7 @@ public class LeakReporter {
 
     @Inject
     public LeakReporter(Context context, UserTracker userTracker, LeakDetector leakDetector,
-            @Nullable @Named(LEAK_REPORT_EMAIL_NAME) String leakReportEmail) {
+            @Named(LEAK_REPORT_EMAIL_NAME) String leakReportEmail) {
         mContext = context;
         mUserTracker = userTracker;
         mLeakDetector = leakDetector;
@@ -150,9 +150,8 @@ public class LeakReporter {
         intent.setClipData(clipData);
         intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, attachments);
 
-        String leakReportEmail = mLeakReportEmail;
-        if (leakReportEmail != null) {
-            intent.putExtra(Intent.EXTRA_EMAIL, new String[] { leakReportEmail });
+        if (!TextUtils.isEmpty(mLeakReportEmail)) {
+            intent.putExtra(Intent.EXTRA_EMAIL, new String[] { mLeakReportEmail });
         }
 
         return intent;