javascript - NativeScript 中的 ClassNotFoundException 使用 .extend()

Question

我正在尝试扩展 GoogleApiClient.ConnectionCallbacks()，但一直出现错误

`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)

`

我对应的代码是

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));

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

编辑:为什么在 GoogleApiClient 之后的错误日志中有下划线？

有什么建议我做错了吗？

Answer 1

这里的问题是您正在尝试扩展一个错误的接口(interface)。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 () { }

}));

如果 MessageListener 是一个接口(interface)，只需删除 .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 () { }

}));