Address existing UnknownNullness lint violations

features/fixtures/mazerunner/src/main/java/com/bugsnag/android/TestHarnessHooks.kt

@@ -26,12 +26,12 @@ internal fun createSlowDelivery(context: Context): Delivery {
     val delivery = DefaultDelivery(cm)
 
     return object : Delivery {
-        override fun deliver(payload: SessionTrackingPayload?, config: Configuration?) {
+        override fun deliver(payload: SessionTrackingPayload, config: Configuration) {
             Thread.sleep(500)
             delivery.deliver(payload, config)
         }
 
-        override fun deliver(report: Report?, config: Configuration?) {
+        override fun deliver(report: Report, config: Configuration) {
             Thread.sleep(500)
             delivery.deliver(report, config)
         }
@@ -47,18 +47,18 @@ internal fun createCustomHeaderDelivery(context: Context): Delivery {
     return object : Delivery {
         val delivery: DefaultDelivery = createDefaultDelivery(context)
 
-        override fun deliver(payload: SessionTrackingPayload?, config: Configuration?) {
-            deliver(config?.sessionEndpoint, payload, config?.sessionApiHeaders)
+        override fun deliver(payload: SessionTrackingPayload, config: Configuration) {
+            deliver(config.sessionEndpoint, payload, config.sessionApiHeaders)
         }
 
-        override fun deliver(report: Report?, config: Configuration?) {
-            deliver(config?.endpoint, report, config?.errorApiHeaders)
+        override fun deliver(report: Report, config: Configuration) {
+            deliver(config.endpoint, report, config.errorApiHeaders)
         }
 
-        fun deliver(endpoint: String?,
-                    streamable: JsonStream.Streamable?,
-                    headers: MutableMap<String, String>?) {
-            headers!!["Custom-Client"] = "Hello World"
+        fun deliver(endpoint: String,
+                    streamable: JsonStream.Streamable,
+                    headers: MutableMap<String, String>) {
+            headers["Custom-Client"] = "Hello World"
             delivery.deliver(endpoint, streamable, headers)
         }
     }

features/fixtures/mazerunner/src/main/java/com/bugsnag/android/mazerunner/scenarios/Scenario.kt

@@ -18,11 +18,11 @@ abstract internal class Scenario(protected val config: Configuration,
     protected fun disableSessionDelivery() {
         val baseDelivery = Bugsnag.getClient().config.delivery
         Bugsnag.getClient().config.delivery = object: Delivery {
-            override fun deliver(payload: SessionTrackingPayload?, config: Configuration?) {
+            override fun deliver(payload: SessionTrackingPayload, config: Configuration) {
                 throw DeliveryFailureException("Session Delivery NOP", RuntimeException("NOP"))
             }
 
-            override fun deliver(report: Report?, config: Configuration?) {
+            override fun deliver(report: Report, config: Configuration) {
                 baseDelivery.deliver(report, config)
             }
         }
@@ -34,11 +34,11 @@ abstract internal class Scenario(protected val config: Configuration,
     protected fun disableReportDelivery() {
         val baseDelivery = Bugsnag.getClient().config.delivery
         Bugsnag.getClient().config.delivery = object: Delivery {
-            override fun deliver(payload: SessionTrackingPayload?, config: Configuration?) {
+            override fun deliver(payload: SessionTrackingPayload, config: Configuration) {
                 baseDelivery.deliver(payload, config)
             }
 
-            override fun deliver(report: Report?, config: Configuration?) {
+            override fun deliver(report: Report, config: Configuration) {
                 throw DeliveryFailureException("Session Delivery NOP", RuntimeException("NOP"))
             }
         }
@@ -57,11 +57,11 @@ abstract internal class Scenario(protected val config: Configuration,
 
     protected fun disableAllDelivery(config: Configuration) {
         config.delivery = object: Delivery {
-            override fun deliver(payload: SessionTrackingPayload?, config: Configuration?) {
+            override fun deliver(payload: SessionTrackingPayload, config: Configuration) {
                 throw DeliveryFailureException("Error Delivery NOP", RuntimeException("NOP"))
             }
 
-            override fun deliver(report: Report?, config: Configuration?) {
+            override fun deliver(report: Report, config: Configuration) {
                 throw DeliveryFailureException("Session Delivery NOP", RuntimeException("NOP"))
             }
         }

sdk/src/main/java/com/bugsnag/android/BadResponseException.java

@@ -1,5 +1,7 @@
 package com.bugsnag.android;
 
+import android.support.annotation.NonNull;
+
 import java.util.Locale;
 
 /**
@@ -10,7 +12,7 @@
 public class BadResponseException extends Exception {
     private static final long serialVersionUID = -870190454845379171L;
 
-    public BadResponseException(String msg, int responseCode) {
+    public BadResponseException(@NonNull String msg, int responseCode) {
         super(String.format(Locale.US, "%s (%d)", msg, responseCode));
     }
 }

sdk/src/main/java/com/bugsnag/android/BeforeNotify.java

@@ -1,5 +1,7 @@
 package com.bugsnag.android;
 
+import android.support.annotation.NonNull;
+
 /**
  * A callback to be run before reports are sent to Bugsnag.
  * <p>
@@ -18,5 +20,5 @@ public interface BeforeNotify {
      * @param error the error to be sent to Bugsnag
      * @see Error
      */
-    boolean run(Error error);
+    boolean run(@NonNull Error error);
 }

sdk/src/main/java/com/bugsnag/android/BeforeSend.java

@@ -1,5 +1,7 @@
 package com.bugsnag.android;
 
+import android.support.annotation.NonNull;
+
 /**
  * A callback to be run before every report sent to Bugsnag.
  * <p>
@@ -16,5 +18,5 @@ public interface BeforeSend {
      *
      * @param report the {@link Report} to be sent to Bugsnag
      */
-    boolean run(Report report);
+    boolean run(@NonNull Report report);
 }

sdk/src/main/java/com/bugsnag/android/BreadcrumbType.java

@@ -1,5 +1,7 @@
 package com.bugsnag.android;
 
+import android.support.annotation.NonNull;
+
 /**
  * Recognized types of breadcrumbs
  */
@@ -40,11 +42,12 @@ public enum BreadcrumbType {
 
     private final String type;
 
-    BreadcrumbType(String type) {
+    BreadcrumbType(@NonNull String type) {
         this.type = type;
     }
 
     @Override
+    @NonNull
     public String toString() {
         return type;
     }

sdk/src/main/java/com/bugsnag/android/Bugsnag.java

@@ -86,7 +86,7 @@ public static Client init(@NonNull Context androidContext, @NonNull Configuratio
      *
      * @param appVersion the app version to send
      */
-    public static void setAppVersion(final String appVersion) {
+    public static void setAppVersion(@NonNull final String appVersion) {
         getClient().setAppVersion(appVersion);
     }
 
@@ -95,7 +95,7 @@ public static void setAppVersion(final String appVersion) {
      *
      * @return Context
      */
-    public static String getContext() {
+    @Nullable public static String getContext() {
         return getClient().getContext();
     }
 
@@ -106,7 +106,7 @@ public static String getContext() {
      *
      * @param context set what was happening at the time of a crash
      */
-    public static void setContext(final String context) {
+    public static void setContext(@Nullable final String context) {
         getClient().setContext(context);
     }
 
@@ -121,7 +121,7 @@ public static void setContext(final String context) {
      * instead.
      */
     @Deprecated
-    public static void setEndpoint(final String endpoint) {
+    public static void setEndpoint(@NonNull final String endpoint) {
         getClient().setEndpoint(endpoint);
     }
 
@@ -134,7 +134,7 @@ public static void setEndpoint(final String endpoint) {
      * @param buildUuid the buildUuid.
      */
     @SuppressWarnings("checkstyle:AbbreviationAsWordInName")
-    public static void setBuildUUID(final String buildUuid) {
+    public static void setBuildUUID(@Nullable final String buildUuid) {
         getClient().setBuildUUID(buildUuid);
     }
 
@@ -151,7 +151,7 @@ public static void setBuildUUID(final String buildUuid) {
      *
      * @param filters a list of keys to filter from metaData
      */
-    public static void setFilters(final String... filters) {
+    public static void setFilters(@Nullable final String... filters) {
         getClient().setFilters(filters);
     }
 
@@ -164,7 +164,7 @@ public static void setFilters(final String... filters) {
      *
      * @param ignoreClasses a list of exception classes to ignore
      */
-    public static void setIgnoreClasses(final String... ignoreClasses) {
+    public static void setIgnoreClasses(@Nullable final String... ignoreClasses) {
         getClient().setIgnoreClasses(ignoreClasses);
     }
 
@@ -179,7 +179,7 @@ public static void setIgnoreClasses(final String... ignoreClasses) {
      * @param notifyReleaseStages a list of releaseStages to notify for
      * @see #setReleaseStage
      */
-    public static void setNotifyReleaseStages(final String... notifyReleaseStages) {
+    public static void setNotifyReleaseStages(@Nullable final String... notifyReleaseStages) {
         getClient().setNotifyReleaseStages(notifyReleaseStages);
     }
 
@@ -195,7 +195,7 @@ public static void setNotifyReleaseStages(final String... notifyReleaseStages) {
      *
      * @param projectPackages a list of package names
      */
-    public static void setProjectPackages(final String... projectPackages) {
+    public static void setProjectPackages(@Nullable final String... projectPackages) {
         getClient().setProjectPackages(projectPackages);
     }
 
@@ -209,7 +209,7 @@ public static void setProjectPackages(final String... projectPackages) {
      * @param releaseStage the release stage of the app
      * @see #setNotifyReleaseStages {@link #setLoggingEnabled(boolean)}
      */
-    public static void setReleaseStage(final String releaseStage) {
+    public static void setReleaseStage(@Nullable final String releaseStage) {
         getClient().setReleaseStage(releaseStage);
     }
 
@@ -247,7 +247,9 @@ public static void setAutoCaptureSessions(boolean autoCapture) {
      * @param email the email address of the current user
      * @param name  the name of the current user
      */
-    public static void setUser(final String id, final String email, final String name) {
+    public static void setUser(@Nullable final String id,
+                               @Nullable final String email,
+                               @Nullable final String name) {
         getClient().setUser(id, email, name);
     }
 
@@ -265,7 +267,7 @@ public static void clearUser() {
      *
      * @param id a unique identifier of the current user
      */
-    public static void setUserId(final String id) {
+    public static void setUserId(@Nullable final String id) {
         getClient().setUserId(id);
     }
 
@@ -275,7 +277,7 @@ public static void setUserId(final String id) {
      *
      * @param email the email address of the current user
      */
-    public static void setUserEmail(final String email) {
+    public static void setUserEmail(@Nullable final String email) {
         getClient().setUserEmail(email);
     }
 
@@ -285,7 +287,7 @@ public static void setUserEmail(final String email) {
      *
      * @param name the name of the current user
      */
-    public static void setUserName(final String name) {
+    public static void setUserName(@Nullable final String name) {
         getClient().setUserName(name);
     }
 
@@ -347,7 +349,7 @@ public static void setSessionTrackingApiClient(@NonNull SessionTrackingApiClient
      * @param beforeNotify a callback to run before sending errors to Bugsnag
      * @see BeforeNotify
      */
-    public static void beforeNotify(final BeforeNotify beforeNotify) {
+    public static void beforeNotify(@NonNull final BeforeNotify beforeNotify) {
         getClient().beforeNotify(beforeNotify);
     }
 
@@ -369,7 +371,8 @@ public static void beforeNotify(final BeforeNotify beforeNotify) {
      * @param beforeRecordBreadcrumb a callback to run before a breadcrumb is captured
      * @see BeforeRecordBreadcrumb
      */
-    public static void beforeRecordBreadcrumb(final BeforeRecordBreadcrumb beforeRecordBreadcrumb) {
+    public static void beforeRecordBreadcrumb(
+        @NonNull final BeforeRecordBreadcrumb beforeRecordBreadcrumb) {
         getClient().beforeRecordBreadcrumb(beforeRecordBreadcrumb);
     }
 
@@ -389,7 +392,8 @@ public static void notify(@NonNull final Throwable exception) {
      * @param callback  callback invoked on the generated error report for
      *                  additional modification
      */
-    public static void notify(@NonNull final Throwable exception, final Callback callback) {
+    public static void notify(@NonNull final Throwable exception,
+                              @Nullable final Callback callback) {
         getClient().notify(exception, callback);
     }
 
@@ -405,7 +409,7 @@ public static void notify(@NonNull final Throwable exception, final Callback cal
     public static void notify(@NonNull String name,
                               @NonNull String message,
                               @NonNull StackTraceElement[] stacktrace,
-                              Callback callback) {
+                              @Nullable Callback callback) {
         getClient().notify(name, message, stacktrace, callback);
     }
 
@@ -416,7 +420,8 @@ public static void notify(@NonNull String name,
      * @param severity  the severity of the error, one of Severity.ERROR,
      *                  Severity.WARNING or Severity.INFO
      */
-    public static void notify(@NonNull final Throwable exception, final Severity severity) {
+    public static void notify(@NonNull final Throwable exception,
+                              @NonNull final Severity severity) {
         getClient().notify(exception, severity);
     }
 
@@ -448,7 +453,8 @@ public void beforeNotify(@NonNull Report report) {
      * @deprecated Use {@link #notify(Throwable, Callback)} to send and modify error reports
      */
     @Deprecated
-    public static void notify(@NonNull final Throwable exception, final Severity severity,
+    public static void notify(@NonNull final Throwable exception,
+                              @NonNull final Severity severity,
                               @NonNull final MetaData metaData) {
         getClient().notify(exception, new Callback() {
             @Override
@@ -472,8 +478,10 @@ public void beforeNotify(@NonNull Report report) {
      * to send and modify error reports
      */
     @Deprecated
-    public static void notify(@NonNull String name, @NonNull String message,
-                              @NonNull StackTraceElement[] stacktrace, Severity severity,
+    public static void notify(@NonNull String name,
+                              @NonNull String message,
+                              @NonNull StackTraceElement[] stacktrace,
+                              @NonNull Severity severity,
                               @NonNull MetaData metaData) {
         final Severity finalSeverity = severity;
         final MetaData finalMetaData = metaData;
@@ -502,8 +510,11 @@ public void beforeNotify(@NonNull Report report) {
     @Deprecated
     @SuppressWarnings("checkstyle:JavadocTagContinuationIndentation")
 
-    public static void notify(@NonNull String name, @NonNull String message, String context,
-                              @NonNull StackTraceElement[] stacktrace, Severity severity,
+    public static void notify(@NonNull String name,
+                              @NonNull String message,
+                              @Nullable String context,
+                              @NonNull StackTraceElement[] stacktrace,
+                              @NonNull Severity severity,
                               @NonNull MetaData metaData) {
         final String finalContext = context;
         final Severity finalSeverity = severity;
@@ -523,9 +534,9 @@ public void beforeNotify(@NonNull Report report) {
      * Android is not supported.
      */
     public static void internalClientNotify(@NonNull final Throwable exception,
-                                            Map<String, Object> clientData,
+                                            @NonNull Map<String, Object> clientData,
                                             boolean blocking,
-                                            Callback callback) {
+                                            @Nullable Callback callback) {
         getClient().internalClientNotify(exception, clientData, blocking, callback);
     }
 
@@ -542,7 +553,9 @@ public static void internalClientNotify(@NonNull final Throwable exception,
      * @param key   the name of the diagnostic information
      * @param value the contents of the diagnostic information
      */
-    public static void addToTab(final String tab, final String key, final Object value) {
+    public static void addToTab(@NonNull final String tab,
+                                @NonNull final String key,
+                                @Nullable final Object value) {
         getClient().addToTab(tab, key, value);
     }
 
@@ -551,7 +564,7 @@ public static void addToTab(final String tab, final String key, final Object val
      *
      * @param tabName the dashboard tab to remove diagnostic data from
      */
-    public static void clearTab(String tabName) {
+    public static void clearTab(@NonNull String tabName) {
         getClient().clearTab(tabName);
     }