fix(app): backward compatibility for Stream apis

Signed-off-by: Trumeet <[email protected]>

Author: Trumeet

app/build.gradle

@@ -91,11 +91,6 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
-    implementation 'com.elvishew:xlog:1.6.1'
-    implementation project(':common')
-    implementation 'moe.shizuku.preference:preference:3.0.0'
-    implementation 'moe.shizuku.preference:preference-dialog-android:3.0.0'
-    implementation 'moe.shizuku.preference:preference-simplemenu:3.0.0'
     implementation 'com.google.android.material:material:1.1.0-alpha02'
     def nav_version = "1.0.0-alpha08"
     implementation "android.arch.navigation:navigation-fragment:$nav_version"
@@ -107,4 +102,14 @@ dependencies {
     implementation 'com.google.android.gms:play-services-oss-licenses:16.0.1'
     // Fabric
     implementation 'com.crashlytics.sdk.android:crashlytics:2.9.8'
+    // Stream support for Java8-
+    implementation 'com.annimon:stream:1.2.1'
+    // Preferences
+    implementation 'moe.shizuku.preference:preference:3.0.0'
+    implementation 'moe.shizuku.preference:preference-dialog-android:3.0.0'
+    implementation 'moe.shizuku.preference:preference-simplemenu:3.0.0'
+    // Logger
+    implementation 'com.elvishew:xlog:1.6.1'
+    // Common
+    implementation project(':common')
 }

app/src/main/java/moe/yuuta/mipushtester/topic/TopicSubscriptionFragment.java

@@ -5,13 +5,14 @@
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.annimon.stream.Collectors;
+import com.annimon.stream.Stream;
 import com.elvishew.xlog.Logger;
 import com.elvishew.xlog.XLog;
 import com.google.android.material.snackbar.Snackbar;
 import com.xiaomi.mipush.sdk.MiPushClient;
 
 import java.util.List;
-import java.util.stream.Collectors;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -79,7 +80,7 @@ public void onFailure(@NonNull Call<List<Topic>> call, @NonNull Throwable t) {
 
     private void displayTopicsToUI (List<Topic> originalList) {
         List<String> localSubscribedTopics = MiPushClient.getAllTopic(requireContext());
-        List<Topic> list = originalList.stream()
+        List<Topic> list = Stream.of(originalList)
                 .peek(topic -> topic.setSubscribed(localSubscribedTopics.contains(topic.getId())))
                 .collect(Collectors.toList());
         DiffUtil.DiffResult result = DiffUtil.calculateDiff(new DiffUtil.Callback() {