在实际的项目中,如果进程A和进程B进行AIDL绑定通信,通常B进程中的Service不止一个。
这时候采用将A进程和B进程的一个MainService绑定,再通过MainService获得B进程中其他service的接口。这样一来,绑定了一个MainService就可以与所有service交互。 代码的架构将清晰明了。
进程主Service的AIDL文件IMainInterface.aidl:
interface IMainInterface{
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
IBinder getFirstService();
IBinder getSecodService();
}
进程的其他Service的AIDL文件IFirstInterface.aidl和ISecondInterface.aidl
interface IFirstInterface {
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
String getString(String s);
}
interface ISecondInterface {
/**
* Demonstrates some basic types that you can use as parameters
* and return values in AIDL.
*/
int add(int a, int b);
}
新建每个aidl的Stub文件 MyMainStub.java MyFirstStub.java MySecondStub.java
public class MyMainStub extends IMainInterface.Stub{
@Override
public IBinder getFirstService() throws RemoteException {
return new MyFirstStub();
}
@Override
public IBinder getSecodService() throws RemoteException {
return new MySecondStub();
}
}
public class MyFirstStub extends IFirstInterface.Stub{
@Override
public String getString(String s) throws RemoteException {
return s.toUpperCase();
}
}
public class MySecondStub extends ISecondInterface.Stub {
@Override
public int add(int a, int b) throws RemoteException {
return a+b;
}
}
新建每个Service文件 MainService.java FirstService.java SecondService.java
public class MainService extends Service {
MyMainStub myMainStub = new MyMainStub();
@Override
public IBinder onBind(Intent intent) {
return myMainStub;
}
}
public class FirstService extends Service{
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
public class SecondService extends Service {
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
在进程的非主service当中onbind返回null即可。
在MainActivity当中使用:
serviceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
mService = IMainInterface.Stub.asInterface(service);
/*try {
IBinder iBinder = mService.getFirstService();
fService = IFirstInterface.Stub.asInterface(iBinder);
mTextView.setText(fService.getString("helloword"));
} catch (RemoteException e) {
e.printStackTrace();
}*/
try {
IBinder iBinder = mService.getSecodService();
sService = ISecondInterface.Stub.asInterface(iBinder);
mTextView.setText(sService.add(5, 5) + "");
} catch (RemoteException e) {
e.printStackTrace();
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
}
};