lint: don't keep references to Context in static fields

app/src/androidTest/java/at/bitfire/davdroid/model/CollectionInfoTest.java

@@ -42,7 +42,7 @@ public class CollectionInfoTest extends TestCase {
                         "</response>" +
                         "</multistatus>"));
 
-        DavResource dav = new DavResource(HttpClient.create(), server.url("/"));
+        DavResource dav = new DavResource(HttpClient.create(null), server.url("/"));
         dav.propfind(0, ResourceType.NAME);
         CollectionInfo info = CollectionInfo.fromDavResource(dav);
         assertEquals(CollectionInfo.Type.ADDRESS_BOOK, info.type);
@@ -66,7 +66,7 @@ public class CollectionInfoTest extends TestCase {
                         "</response>" +
                         "</multistatus>"));
 
-        dav = new DavResource(HttpClient.create(), server.url("/"));
+        dav = new DavResource(HttpClient.create(null), server.url("/"));
         dav.propfind(0, ResourceType.NAME);
         info = CollectionInfo.fromDavResource(dav);
         assertEquals(CollectionInfo.Type.CALENDAR, info.type);

app/src/androidTest/java/at/bitfire/davdroid/ui/setup/DavResourceFinderTest.java

@@ -54,9 +54,9 @@ public class DavResourceFinderTest extends InstrumentationTestCase {
         server.start();
 
         credentials = new LoginCredentials(URI.create("/"), "mock", "12345");
-        finder = new DavResourceFinder(getInstrumentation().getContext(), credentials);
+        finder = new DavResourceFinder(getInstrumentation().getTargetContext(), credentials);
 
-        client = HttpClient.create();
+        client = HttpClient.create(null);
         client = HttpClient.addAuthentication(client, credentials.userName, credentials.password);
     }
 

app/src/main/java/at/bitfire/davdroid/App.java

@@ -51,7 +51,7 @@ public class App extends Application {
             LOG_TO_EXTERNAL_STORAGE = "logToExternalStorage";
 
     @Getter
-    private static CustomCertManager certManager;
+    private CustomCertManager certManager;
 
     @Getter
     private static SSLSocketFactoryCompat sslSocketFactoryCompat;

app/src/main/java/at/bitfire/davdroid/HttpClient.java

@@ -42,8 +42,8 @@ public class HttpClient {
     private HttpClient() {
     }
 
-    public static OkHttpClient create(@NonNull Context context, @NonNull Account account, @NonNull final Logger logger) throws InvalidAccountException {
+    public static OkHttpClient create(@Nullable Context context, @NonNull Account account, @NonNull final Logger logger) throws InvalidAccountException {
-        OkHttpClient.Builder builder = defaultBuilder(logger);
+        OkHttpClient.Builder builder = defaultBuilder(context, logger);
 
         // use account settings for authentication
         AccountSettings settings = new AccountSettings(context, account);
@@ -52,27 +52,30 @@ public class HttpClient {
         return builder.build();
     }
 
-    public static OkHttpClient create(@NonNull Logger logger) {
+    public static OkHttpClient create(@NonNull Context context, @NonNull Logger logger) {
-        return defaultBuilder(logger).build();
+        return defaultBuilder(context, logger).build();
     }
 
     public static OkHttpClient create(@NonNull Context context, @NonNull Account account) throws InvalidAccountException {
         return create(context, account, App.log);
     }
 
-    public static OkHttpClient create() {
+    public static OkHttpClient create(@Nullable Context context) {
-        return create(App.log);
+        return create(context, App.log);
     }
 
 
-    private static OkHttpClient.Builder defaultBuilder(@NonNull final Logger logger) {
+    private static OkHttpClient.Builder defaultBuilder(@Nullable Context context, @NonNull final Logger logger) {
         OkHttpClient.Builder builder = client.newBuilder();
 
         // use MemorizingTrustManager to manage self-signed certificates
-        if (App.getSslSocketFactoryCompat() != null && App.getCertManager() != null)
+        if (context != null) {
-            builder.sslSocketFactory(App.getSslSocketFactoryCompat(), App.getCertManager());
+            App app = (App)context.getApplicationContext();
+            if (App.getSslSocketFactoryCompat() != null && app.getCertManager() != null)
+                builder.sslSocketFactory(App.getSslSocketFactoryCompat(), app.getCertManager());
             if (App.getHostnameVerifier() != null)
                 builder.hostnameVerifier(App.getHostnameVerifier());
+        }
 
         // set timeouts
         builder.connectTimeout(30, TimeUnit.SECONDS);

app/src/main/java/at/bitfire/davdroid/syncadapter/ContactsSyncManager.java

@@ -484,7 +484,7 @@ public class ContactsSyncManager extends SyncManager {
                 return null;
             }
 
-            OkHttpClient resourceClient = HttpClient.create();
+            OkHttpClient resourceClient = HttpClient.create(context);
 
             // authenticate only against a certain host, and only upon request
             resourceClient = HttpClient.addAuthentication(resourceClient, baseUrl.host(), settings.username(), settings.password());

app/src/main/java/at/bitfire/davdroid/ui/AccountActivity.java

@@ -114,7 +114,7 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
     @Override
     protected void onPause() {
         super.onPause();
-        CustomCertManager certManager = App.getCertManager();
+        CustomCertManager certManager = ((App)getApplicationContext()).getCertManager();
         if (certManager != null)
             certManager.appInForeground = false;
     }
@@ -122,7 +122,7 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
     @Override
     protected void onResume() {
         super.onResume();
-        CustomCertManager certManager = App.getCertManager();
+        CustomCertManager certManager = ((App)getApplicationContext()).getCertManager();
         if (certManager != null)
             certManager.appInForeground = true;
     }

app/src/main/java/at/bitfire/davdroid/ui/AppSettingsActivity.java

@@ -71,8 +71,6 @@ public class AppSettingsActivity extends AppCompatActivity {
             prefDistrustSystemCerts.setChecked(settings.getBoolean(App.DISTRUST_SYSTEM_CERTIFICATES, false));
 
             prefResetCertificates = findPreference("reset_certificates");
-            if (App.getCertManager() == null)
-                prefResetCertificates.setVisible(false);
 
             prefLogToExternalStorage = (SwitchPreferenceCompat)findPreference("log_to_external_storage");
             prefLogToExternalStorage.setChecked(settings.getBoolean(App.LOG_TO_EXTERNAL_STORAGE, false));
@@ -108,7 +106,7 @@ public class AppSettingsActivity extends AppCompatActivity {
         }
 
         private void resetCertificates() {
-            App.getCertManager().resetCertificates();
+            ((App)getContext().getApplicationContext()).getCertManager().resetCertificates();
             Snackbar.make(getView(), getString(R.string.app_settings_reset_certificates_success), Snackbar.LENGTH_LONG).show();
         }
 

app/src/main/java/at/bitfire/davdroid/ui/setup/DavResourceFinder.java

@@ -77,7 +77,7 @@ public class DavResourceFinder {
         log.setLevel(Level.FINEST);
         log.addHandler(logBuffer);
 
-        httpClient = HttpClient.create(log);
+        httpClient = HttpClient.create(context, log);
         httpClient = HttpClient.addAuthentication(httpClient, credentials.userName, credentials.password);
 	}
 

app/src/main/java/at/bitfire/davdroid/ui/setup/LoginActivity.java

@@ -57,15 +57,19 @@ public class LoginActivity extends AppCompatActivity {
     @Override
     protected void onResume() {
         super.onResume();
-        if (App.getCertManager() != null)
+
-            App.getCertManager().appInForeground = true;
+        App app = (App)getApplicationContext();
+        if (app.getCertManager() != null)
+            app.getCertManager().appInForeground = true;
     }
 
     @Override
     protected void onPause() {
         super.onPause();
-        if (App.getCertManager() != null)
+
-            App.getCertManager().appInForeground = false;
+        App app = (App)getApplicationContext();
+        if (app.getCertManager() != null)
+            app.getCertManager().appInForeground = false;
     }
 
     @Override

app/src/test/java/at/bitfire/davdroid/HttpClientTest.java

@@ -26,7 +26,7 @@ public class HttpClientTest extends TestCase {
 
     @Override
     public void setUp() throws IOException {
-        httpClient = HttpClient.create();
+        httpClient = HttpClient.create(null);
 
         server = new MockWebServer();
         server.start(30000);

dav4android

@@ -1 +1 @@
-Subproject commit 0b0405a95dda7a0435e4b2562c90c0b7311e171f
+Subproject commit e70f7a4135b124af9fd696f6863c50ea4c91562f

ical4android

@@ -1 +1 @@
-Subproject commit c075d3803ae0b0b0b008f96e541cded183d1dd2b
+Subproject commit f6535874a9f1f399913dcb51bda1aa9affbb4c5a

vcard4android

@@ -1 +1 @@
-Subproject commit 499901fc285c1bb3356feb7446a85db268d57a1d
+Subproject commit 8c4776a6be83b641611c12e1a0e524b6435bcf9a