flutter 即时通讯要怎么使用呢？

[vitaszkx]

想要集成IM功能，但是不知道要如何使用，一直用flutter没用过原生。
public class YourApplication extends FlutterApplication {
@Override
public void onCreate() {
super.onCreate();
AVIMOptions.getGlobalOptions().setUnreadNotificationEnabled(true);
AVOSCloud.setLogLevel(AVLogger.Level.DEBUG);
AVOSCloud.initialize(this, YOUR_LC_APP_ID, YOUR_LC_APP_KEY, YOUR_LC_SERVER_URL);
}
}
这个文件是直接创建java吗？为什么我创建了这个文件后调试出bug，
public class MyLeanCloudApp extends FlutterApplication {
^
C:\flutterproject\suixin_app\android\app\src\main\java\application.java:1: ����: �����cn.leancloud������
import cn.leancloud.AVOSCloud;
我不太清楚
https://pub.dev/packages/leancloud_official_plugin
这个插件到底要怎么用，如果用不了就只能试试融云了。

[vitaszkx]

有人能详细教教我吗，我是小白，如果能用会为此IM服务付费的。

[xiaoxu]

你好，可以参考这个安装文档： https://leancloud.cn/docs/sdk_setup-flutter.html#hash662673194

MyLeanCloudApp 是需要在 Android > app > src > main > java 目录下新建的文件。

[vitaszkx]

Launching lib\main.dart on DUB AL20 in debug mode...
Running Gradle task 'assembleDebug'...
√ Built build\app\outputs\flutter-apk\app-debug.apk.
E/AndroidRuntime(17435): FATAL EXCEPTION: main
E/AndroidRuntime(17435): Process: com.example.flutterabcdapp, PID: 17435
E/AndroidRuntime(17435): java.lang.RuntimeException: Unable to instantiate application com.example.flutterabcdapp.MyLeanCloudApp: java.lang.ClassNotFoundException: Didn't find class "com.example.flutterabcdapp.MyLeanCloudApp" on path: DexPathList[[zip file "/data/app/com.example.flutterabcdapp-1z-L_NNvn3RHv4y9-o8PAg==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.flutterabcdapp-1z-L_NNvn3RHv4y9-o8PAg==/lib/arm64, /data/app/com.example.flutterabcdapp-1z-L_NNvn3RHv4y9-o8PAg==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64, /product/lib64]]
E/AndroidRuntime(17435): at android.app.LoadedApk.makeApplication(LoadedApk.java:1076)
E/AndroidRuntime(17435): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6602)
E/AndroidRuntime(17435): at android.app.ActivityThread.-wrap2(Unknown Source:0)
E/AndroidRuntime(17435): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2084)
E/AndroidRuntime(17435): at android.os.Handler.dispatchMessage(Handler.java:109)
E/AndroidRuntime(17435): at android.os.Looper.loop(Looper.java:166)
E/AndroidRuntime(17435): at android.app.ActivityThread.main(ActivityThread.java:7555)
E/AndroidRuntime(17435): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(17435): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:469)
E/AndroidRuntime(17435): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:963)
E/AndroidRuntime(17435): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.flutterabcdapp.MyLeanCloudApp" on path: DexPathList[[zip file "/data/app/com.example.flutterabcdapp-1z-L_NNvn3RHv4y9-o8PAg==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.flutterabcdapp-1z-L_NNvn3RHv4y9-o8PAg==/lib/arm64, /data/app/com.example.flutterabcdapp-1z-L_NNvn3RHv4y9-o8PAg==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64, /product/lib64]]
我按照文档上写的配置了，但是出现这个并且闪退。