我正在尝试实现AIDL,我只是不明白它是如何工作的.通过这个我的意思是什么是方法调用的进展?
我不明白如何通过AIDL从服务到我的活动的对象.我一直在使用谷歌文档作为指导,但我很困惑.谢谢
更新:
在服务连接中,我有这些行,其中mCallback是IRemoteServiceCallback.
public void onServiceConnected(ComponentName name, IBinder service) {
mRemoteInterface = IRemoteInterface.Stub.asInterface(service);
Log.v(TAG, "Interface bound.");
try{
mRemoteInterface.registerCallback(mCallback);
}catch(RemoteException e){
}
Toast.makeText(MainActivity.this, "Remote Service Connected",
Toast.LENGTH_SHORT).show();
}
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这是registerCallback,其中mCallbacks是一个
final RemoteCallbackList <IRemoteServiceCallback> mCallbacks
= new RemoteCallbackList <IRemoteServiceCallback> ();
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.....
public void registerCallback(IRemoteServiceCallback callback)
throws RemoteException {
if(callback != null){
mCallbacks.register(callback);
}
}
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IRemoteServiceCallback(mCallback)的唯一方法是:
public void valueChanged(int value) {
mHandler.sendMessage(mHandler.obtainMessage(BUMP_MSG, value, 0));
}
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我也有一个处理程序,但我不太清楚该怎么做:
private Handler mHandler = new Handler() {
@Override public void handleMessage(Message …Run Code Online (Sandbox Code Playgroud) [我有一个自定义的parcelable对象车]
我看过AsyncTask但是关于这个主题还不太清楚:
我想将一个String(它是Vehicle的Vehicle ID)传递给AsyncTask,然后在doInBackground()中我有一个方法
mRemoteInterface.getTrackHistory();
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这给了我一个ArrayList.我想在onPostExecute()中启动一个活动,其中Vehicle ID和ArrayList都是额外的.
这是我无法做到的概述.问题是我不明白将对象INTO到asynctask,然后从doInBackground()到onPostExecute()和从onPostExecute()返回到原始的执行调用.
getTrackHistory.execute(这里应该去哪里?);
private class getTrackHistory extends
AsyncTask<String, Integer, Boolean **WHAT SHOULD GO HERE?**> {
@Override
protected Boolean doInBackground(
String... params) {
try {
String vehicleID = params[0];
listVehicleHistory = (ArrayList<Vehicle>) mRemoteInterface.getVehicleHistory(vehicleID);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected void onProgressUpdate(Integer... progress) {
}
@Override
protected void onPostExecute(Boolean worked) {
super.onPostExecute(worked);
Intent intent = new Intent(MainActivity.this,VehicleInfo.class);
intent.putExtra("Vehicle ID", toReturn);
intent.putParcelableArrayListExtra("VehicleHistory", listVehicleHistory);
startActivity(intent);
}
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}