我知道，我知道，这个问题已经被问过几次了，但建议的解决方案似乎在这里不起作用。
我的问题是 onserviceConnected 没有被调用。
一些信息：我开发了一个计算器，它调用了一个名为 HelloWorld 的服务器。如果有一个“加”操作，HelloWorld 会返回一个 3+4 的内置总和（现在只是硬编码）。
1）我实现了以下功能：
public IBinder onBind(Intent intent) {
// Return the interface
Log.d(getClass().getSimpleName(),"IBinder");
return mBinder;
}
2）我的 Android 清单文件确实有以下条目：
<service android:name=".RemoteService"
android:enabled="true"
android:process=":remote">
<intent-filter >
<action android:name="com.example.helloworld.RemoteService"/>
</intent-filter>
</service>
4）这是我的 RemoteService.java
public class RemoteService extends Service {
@Override
public IBinder onBind(Intent intent) {
// Return the interface
Log.d(getClass().getSimpleName(),"IBinder");
return mBinder;
}
@Override
public void onCreate() {
super.onCreate();
//Log.d(getClass().getSimpleName(),"onCreate()");
}
private final IRemoteService.Stub mBinder = new IRemoteService.Stub() {
public int getSum(int a,int b){
//System.out.println("Called");
Log.d(getClass().getSimpleName(),"getSum called");
//return android.os.Process.myPid();
return (a+b);
}
public void basicTypes(int anInt, long aLong, boolean aBoolean,
float aFloat, double aDouble, String aString) {
// Does nothing
}
};
}
这是调用 RemoteService 的客户端代码（仅在单击添加按钮时才调用）：
package com.example.myfirstapp;
import android.app.Activity;
import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import com.example.helloworld.IRemoteService;
public class MainActivity extends Activity {
Intent i = new Intent();
boolean bound = false;
IRemoteService mIRemoteService = null;
ServiceConnection mConnection;
void initConnection(){
mConnection = new ServiceConnection() {
// Called when the connection with the service is established
public void onServiceConnected(ComponentName className, IBinder service) {
mIRemoteService = IRemoteService.Stub.asInterface((IBinder)service);
Log.e("TAG 1", "Service has now connected");
}
// Called when the connection with the service disconnects unexpectedly
public void onServiceDisconnected(ComponentName className) {
Log.e("TAG 1", "Service has unexpectedly disconnected");
//System.out.println("Service has unexpectedly disconnected");
mIRemoteService = null;
}
};
if(mIRemoteService == null)
{
Intent it = new Intent();
it.setAction("com.example.helloworld.RemoteService");
//binding to remote service
bound = bindService(it, mConnection, Service.BIND_AUTO_CREATE);
Log.e("TAG 3", bound ? "SERVICE OBTAINED": "NO SERVICE");
}
}
public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//bound = bindService(i, mConnection, Context.BIND_AUTO_CREATE);
//Log.e("TAG 2", bound ? "SERVICE OBTAINED": "NO SERVICE");
//display in short period of time
Toast.makeText(getApplicationContext(), "Your toast message.",
Toast.LENGTH_SHORT).show();
//display in long period of time
Toast.makeText(getApplicationContext(), "Your toast message",
Toast.LENGTH_LONG).show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
initConnection();
return true;
}
/** Called when the user clicks the Send button */
public void subtractMessage(View view) {
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
int f = Integer.parseInt(editText.getText().toString().trim());
editText = (EditText) findViewById(R.id.edit_message1);
int f1 = Integer.parseInt(editText.getText().toString().trim());
f = f-f1;
String message = String.valueOf(f);
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
public void multMessage /*addAndSend*/(View view){
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
int f = Integer.parseInt(editText.getText().toString().trim());
editText = (EditText) findViewById(R.id.edit_message1);
int f1 = Integer.parseInt(editText.getText().toString().trim());
f = f*f1;
String message = String.valueOf(f);
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
public void addMessage(View view){
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
int f = Integer.parseInt(editText.getText().toString().trim());
editText = (EditText) findViewById(R.id.edit_message1);
int f1 = Integer.parseInt(editText.getText().toString().trim());
String message;
if(mIRemoteService == null)
{
Intent it = new Intent();
it.setAction("com.example.helloworld.RemoteService");
//binding to remote service
bound = bindService(it, mConnection, Service.BIND_AUTO_CREATE);
Log.e("TAG 4", bound ? "SERVICE OBTAINED": "NO SERVICE");
}
try{
message = Integer.toString(mIRemoteService.getSum(3,4));
}
catch(Exception e)
{
//setContentView(R.layout.activity_main);
Log.e("TAG", "Not Successful");
f = f+f1;
message = "Not Successful";
}
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
}