NativeScript中使用.extend（）的ClassNotFoundException(ClassNotFoundException in NativeScript using .extend

NativeScript中使用.extend（）的ClassNotFoundException(ClassNotFoundException in NativeScript using .extend())

我正在尝试扩展GoogleApiClient.ConnectionCallbacks（），但一直收到错误

`java.lang.RuntimeException：无法启动活动ComponentInfo {org.nativescript.sampleGroceries / com.tns.NativeScriptActivity}：com.tns.NativeScriptException：调用js方法onCreate失败

调用模块功能时出错

错误：java.lang.ClassNotFoundException：com.google.android.gms.common.api.GoogleApiClient_ConnectionCallbacks java.lang.Class.classForName（Native Method）java.lang.Class.forName（Class.java:324)java.lang。 Class.forName（Class.java:285)com.tns.DexFactory.generateDex(DexFactory.java:262)com.tns.DexFactory.resolveClass(DexFactory.java:120)com.tns.ClassResolver.resolveClass(ClassResolver.java: 45）

`

我的相应代码是

var GoogleApiClient = com.google.android.gms.common.api.GoogleApiClient; var myConnectionCallbacks = GoogleApiClient.ConnectionCallbacks.extend({ onConnected: function(connectionHint){ var MessageListener = MessageListener.extend({ onFound: function(message){ Log.d("MESSAGE", "Found message :) "); }, onLost: function(message){ Log.d("MESSAGE", "Lost message :( "); } }); var mMessageListener = new MessageListener(); }, onConnectionSuspended: function(){} }); var MessagesOptionsBuilder = new com.google.android.gms.nearby.messages.MessagesOptions.Builder().setPermissions(NearbyPermissions.BLE).build(); var test = new GoogleApiClient.Builder(context).addApi(Nearby.MESSAGES_API, MessagesOptionsBuilder); test.addConnectionCallbacks(new myConnectionCallbacks(this));

也许我误解了Docs？ https://docs.nativescript.org/runtimes/android/generator/extend-class-interface

编辑：为什么在GoogleApiClient之后错误日志中有下划线？

有什么建议我做错了吗？

I am trying to extend GoogleApiClient.ConnectionCallbacks(), but keep getting an error

`java.lang.RuntimeException: Unable to start activity ComponentInfo{org.nativescript.sampleGroceries/com.tns.NativeScriptActivity}: com.tns.NativeScriptException: Calling js method onCreate failed

Error calling module function

Error: java.lang.ClassNotFoundException: com.google.android.gms.common.api.GoogleApiClient_ConnectionCallbacks java.lang.Class.classForName(Native Method) java.lang.Class.forName(Class.java:324) java.lang.Class.forName(Class.java:285) com.tns.DexFactory.generateDex(DexFactory.java:262) com.tns.DexFactory.resolveClass(DexFactory.java:120) com.tns.ClassResolver.resolveClass(ClassResolver.java:45)

`

My corresponding code is

var GoogleApiClient = com.google.android.gms.common.api.GoogleApiClient; var myConnectionCallbacks = GoogleApiClient.ConnectionCallbacks.extend({ onConnected: function(connectionHint){ var MessageListener = MessageListener.extend({ onFound: function(message){ Log.d("MESSAGE", "Found message :) "); }, onLost: function(message){ Log.d("MESSAGE", "Lost message :( "); } }); var mMessageListener = new MessageListener(); }, onConnectionSuspended: function(){} }); var MessagesOptionsBuilder = new com.google.android.gms.nearby.messages.MessagesOptions.Builder().setPermissions(NearbyPermissions.BLE).build(); var test = new GoogleApiClient.Builder(context).addApi(Nearby.MESSAGES_API, MessagesOptionsBuilder); test.addConnectionCallbacks(new myConnectionCallbacks(this));

Maybe I misunderstood the Docs? https://docs.nativescript.org/runtimes/android/generator/extend-class-interface

Edit: Why is there an underscore in the error log after GoogleApiClient?

Any suggestions what I do wrong?

最满意答案

这里的问题是你试图扩展一个错误的接口。 更多信息 - > https://docs.nativescript.org/runtimes/android/generator/extend-class-interface#interfaces

var MessagesOptionsBuilder = new com.google.android.gms.nearby.messages.MessagesOptions.Builder().setPermissions(NearbyPermissions.BLE).build(); var test = new GoogleApiClient.Builder(context).addApi(Nearby.MESSAGES_API, MessagesOptionsBuilder); test.addConnectionCallbacks(new com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks({ onConnected: function (connectionHint) { var MessageListener = MessageListener.extend({ onFound: function (message) { console.log(Found message :) "); }, onLost: function (message) { console.log("Lost message :( "); } }); var mMessageListener = new MessageListener(); }, onConnectionSuspended: function () { } }));

只是添加MessageListener是一个只删除.extend的接口

var MessagesOptionsBuilder = new com.google.android.gms.nearby.messages.MessagesOptions.Builder().setPermissions(NearbyPermissions.BLE).build(); var test = new GoogleApiClient.Builder(context).addApi(Nearby.MESSAGES_API, MessagesOptionsBuilder); test.addConnectionCallbacks(new com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks({ onConnected: function (connectionHint) { new MessageListener({ onFound: function (message) { console.log(Found message :) "); }, onLost: function (message) { console.log("Lost message :( "); } }); }, onConnectionSuspended: function () { } }));

The problem here is your are trying to extend an interface which is wrong . More info -> https://docs.nativescript.org/runtimes/android/generator/extend-class-interface#interfaces

var MessagesOptionsBuilder = new com.google.android.gms.nearby.messages.MessagesOptions.Builder().setPermissions(NearbyPermissions.BLE).build(); var test = new GoogleApiClient.Builder(context).addApi(Nearby.MESSAGES_API, MessagesOptionsBuilder); test.addConnectionCallbacks(new com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks({ onConnected: function (connectionHint) { var MessageListener = MessageListener.extend({ onFound: function (message) { console.log(Found message :) "); }, onLost: function (message) { console.log("Lost message :( "); } }); var mMessageListener = new MessageListener(); }, onConnectionSuspended: function () { } }));

and just incase the MessageListener is an interface the just remove the .extend

var MessagesOptionsBuilder = new com.google.android.gms.nearby.messages.MessagesOptions.Builder().setPermissions(NearbyPermissions.BLE).build(); var test = new GoogleApiClient.Builder(context).addApi(Nearby.MESSAGES_API, MessagesOptionsBuilder); test.addConnectionCallbacks(new com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks({ onConnected: function (connectionHint) { new MessageListener({ onFound: function (message) { console.log(Found message :) "); }, onLost: function (message) { console.log("Lost message :( "); } }); }, onConnectionSuspended: function () { } }));