解析 Android 的 AIDL 介面

核心提示：java.lang.String _result;try {_data.writeInterfaceToken(DESCRIPTOR);mRemote.transact(Stub.TRANSACTION_EvAssignPress, _data, _reply, 0);_reply.readException();_r

java.lang.String _result;

try {

_data.writeInterfaceToken(DESCRIPTOR);

mRemote.transact(Stub.TRANSACTION_EvAssignPress, _data, _reply, 0);

_reply.readException();

_result = _reply.readString();

}

finally {

_reply.recycle();

_data.recycle();

}

return _result;

}

}

static final int TRANSACTION_EvDigitPress = (IBinder.FIRST_CALL_TRANSACTION + 0);

static final int TRANSACTION_EvCPress = (IBinder.FIRST_CALL_TRANSACTION + 1);

static final int TRANSACTION_EvPlusPress = (IBinder.FIRST_CALL_TRANSACTION + 2);

static final int TRANSACTION_EvAssignPress = (IBinder.FIRST_CALL_TRANSACTION + 3);

}

public java.lang.String EvDigitPress(int d) throws android.os.RemoteException;

public java.lang.String EvCPress() throws android.os.RemoteException;

public java.lang.String EvPlusPress() throws android.os.RemoteException;

public java.lang.String EvAssignPress() throws android.os.RemoteException;

}

呃?calInterface.java?案是由aidl.exe工具程式所?出的。

首先，calInterface介面擂承了Android提供的IInterface介面，如下述程式瘁：

public interface calInterface extends android.os.IInterface

{

………

}

呃???定柳又?含有一?Stub??，其擂承Android提供的Binder父??，而且?作calInterface介面，如下述程式瘁：

public interface calInterface extends android.os.IInterface

{

……….

public static abstract class Stub extends android.os.Binder implements com.misoo.gx06.calInterface

{

……….

private static class Proxy implements com.misoo.gx06.calInterface

{

………

}

………..

}

由於Stub??擂承了Binder父??，而Binder又?作了IBinder介面，所以Stub??支持??介面：IBinder和calInterface。其?含的Proxy??也支持calInterface。