UPDATE: Minor tweaks.

Author: oasisfeng

build.gradle

@@ -1,11 +1,11 @@
 buildscript {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.4'
+        classpath 'com.android.tools.build:gradle:7.1.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -14,14 +14,14 @@ buildscript {
 
 repositories {
     google()
-    jcenter()
+    mavenCentral()
 }
 
 if (! project.plugins.hasPlugin("com.android.library")) apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
 
     defaultConfig {
         minSdkVersion 23

src/main/AndroidManifest.xml

@@ -34,6 +34,7 @@
         <service android:name=".WeChatDecorator"
                  android:directBootAware="true" tools:targetApi="N"
                  android:permission="com.oasisfeng.nevo.permission.BIND_DECORATOR_SERVICE"
+                 android:exported="true"
                  android:label="@string/decorator_wechat_title"
                  android:description="@string/decorator_wechat_description">
             <intent-filter android:priority="5">

src/main/java/com/oasisfeng/nevo/decorators/wechat/AgentShortcuts.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.annotation.SuppressLint

src/main/java/com/oasisfeng/nevo/decorators/wechat/AssetFileProvider.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.content.ContentProvider

src/main/java/com/oasisfeng/nevo/decorators/wechat/CompatModeController.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.app.Activity

src/main/java/com/oasisfeng/nevo/decorators/wechat/ConversationManager.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.app.Notification

src/main/java/com/oasisfeng/nevo/decorators/wechat/EmojiMap.java

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat;
 
 import static android.os.Build.VERSION.SDK_INT;

src/main/java/com/oasisfeng/nevo/decorators/wechat/EmojiTranslator.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.text.SpannableStringBuilder

src/main/java/com/oasisfeng/nevo/decorators/wechat/IconHelper.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.content.Context

src/main/java/com/oasisfeng/nevo/decorators/wechat/MessagingBuilder.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Nevolution Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.oasisfeng.nevo.decorators.wechat
 
 import android.annotation.SuppressLint