Question

我正在实现一个aidl接口，由于某种原因，以下代码给出了一个错误：

// IApkinsonCallback.aidl
package com.applications.philipp.apkinson.interfaces;

/** Interface implemented by Apkinson so plugins can give feedback */
oneway interface IApkinsonCallback {
    /** To be called by plugin after registration to setup data for result viewing
        Usage of this data:
        Intent intent = new Intent(intentActionName);
        intent.putExtra(bundleResultKey, result);
        startActivity(intent);
     */
    void onRegistered(String intentActionName, String bundleResultKey);
    /** To be called by plugin when result is ready after stopData() was called by Apkinson */
    void onResult(String result);
    /** Called if an error occured in the plugin and the call won't be successfully handled */
    void onError(String errorMsg);
}

错误：

<interface declaration>, <parcelable declaration>, AidlTokenType.import or AidlTokenType.package expected, got 'oneway'

当我删除oneway关键字时，一切正常。但这不能解决我的问题......

Answer 1

要点：

将oneway关键字移至方法级别。

<强>解释 -
这是与Android框架内的/platform/frameworks/base/api/current.txt文件相关的非常奇怪的问题（包含所有功能并由Android Studio使用的Big txt文件）。

示例 -

/** Interface implemented by Apkinson so plugins can give feedback */
interface IApkinsonCallback {
    /** To be called by plugin after registration to setup data for result viewing
        Usage of this data:
        Intent intent = new Intent(intentActionName);
        intent.putExtra(bundleResultKey, result);
        startActivity(intent);
     */
    oneway void onRegistered(String intentActionName, String bundleResultKey);
    /** To be called by plugin when result is ready after stopData() was called by Apkinson */
    oneway void onResult(String result);
    /** Called if an error occured in the plugin and the call won't be successfully handled */
    oneway void onError(String errorMsg);
}

您将获得相同的结果但没有错误。

Answer 2

我在 AndroidStudio 4.1 上测试，我看到了

oneway interface IApkinsonCallback {
      void valueChange();
}
// AndroidStudio dislay error: <interface declaration>, <parcelable declaration>, AidlTokenType.import or AidlTokenType.package expected, got 'oneway'
// BUT it compiles ok and work ok
// AND ALL METHOD INSIDE INTERFACE is oneway method

.

interface IApkinsonCallback {

     oneway void valueChange(); // WORK AS EXPECTED, asynchronous remote call
     
     int getData(); // WORK AS EXPECTED, synchronous remote call

     oneway int getData(); // COMPILE ERROR: oneway method 'getData' cannot return a value
}

aidl oneway关键字错误

2 个答案:

要点：