使用AIDL 进程间通信

下面打//*******的那一行  thirdPayAction.requestPay(pay.getText().toString(),100,result);rer

result上几行new 的对象 以判断不为null；

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";
    private TextView qbNum;
    private Button pay;
    private boolean isBindService;
    private ThirdPayAction thirdPayAction;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        doBindService();
    }

    /**
     * 绑定支付服务
     */
    private void doBindService() {
        Intent intent = new Intent();
        intent.setAction(Constant.ACTION_THREEPAY);
        intent.setPackage("com.example.alipay");
        intent.addCategory(Intent.CATEGORY_DEFAULT);
        isBindService = bindService(intent, serviceConnection, BIND_AUTO_CREATE);
    }

    public ServiceConnection serviceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            Log.d(TAG,"onServiceConnected....");
            thirdPayAction = ThirdPayAction.Stub.asInterface(service);
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            Log.d(TAG,"onServiceDisconnected....");
            thirdPayAction =null;
        }
    };

    /**
     * 初始化资源
     */
    private void initView() {
        qbNum = findViewById(R.id.qNum);
        pay = findViewById(R.id.pay);
        pay.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Result result = new Result();
                if(result==null){
                    Log.d(TAG,"call ==null ");
                }
                try {
                    if(thirdPayAction!=null){
                        thirdPayAction.requestPay(pay.getText().toString(),100,result);///**********
                    }

                } catch (RemoteException e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public  class Result implements ThirdPayResult {

        @Override
        public void paySuccess() throws RemoteException {
            Log.d(TAG,"充值成功... ");
            qbNum.setText("100Q币");
            Toast.makeText(MainActivity.this,"充值成功",Toast.LENGTH_SHORT).show();
        }

        @Override
        public void payError(int errorCode, String msg) throws RemoteException {
            Log.d(TAG,"充值失败... ");
        }

        @Override
        public IBinder asBinder() {
            return null;
        }
    }
   /**
     * 解除服务绑定，释放资源
     */
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if(isBindService&&serviceConnection!=null){
            unbindService(serviceConnection);
            serviceConnection=null;
            isBindService =false;
        }
    }
}

模拟支付宝的app：

requestPay(String orderInfo, float money, ThirdPayResult call) 

前面参数都传递过来了， 只有ThirdPayResult call 它传递的是null

为什么呢？ 为什么呢？

public class ThirdPayImpl extends ThirdPayAction.Stub{



    @Override
    public void requestPay(String orderInfo, float money, ThirdPayResult call) throws RemoteException {

        //第三方支付请求，然后打开一个支付界面。

        mcallback =call;
        if(call==null){
            Log.d(TAG,"传递的回调函数是空");
        }

        Intent intent =new Intent();
        intent.setClass(PayService.this,PayActivity.class);
        intent.putExtra(Constant.KEY_BILL_INFO,orderInfo);
        intent.putExtra(Constant.KEY_PAY_MONEY,money);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        startActivity(intent);

    }

    public void paySuccess(){
        try {
            if(mcallback!=null){
                mcallback.paySuccess();
                Log.d(TAG,"支付成功");
            }
            Log.d(TAG,"mcallback == null");

        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
    public void payError(int errorCode,String msg){
        try {
            if(mcallback!=null){
                mcallback.payError(errorCode,msg);
                Log.d(TAG,"错误代码"+errorCode+"  错误信息"+msg);
            }

        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
}

这是模拟的支付宝服务端

private ThirdPayResult mcallback;

@Override
public void requestPay(String orderInfo, float money, ThirdPayResult call) throws RemoteException {

    //第三方支付请求，然后打开一个支付界面。

    mcallback =call;
    if(call==null){
        Log.d(TAG,"传递的回调函数是空"); // 这里log显示了
    }
    Log.d(TAG,orderInfo+"    11    "+money );
    Intent intent =new Intent();
    intent.setClass(PayService.this,PayActivity.class);
    intent.putExtra(Constant.KEY_BILL_INFO,orderInfo);
    intent.putExtra(Constant.KEY_PAY_MONEY,money);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    startActivity(intent);

}

这是客户端 Result实现接口， 传递的不是空，但模拟支付宝服务端接收的时候时空对象

pay.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Result result = new Result();
        if(result==null){
            Log.d(TAG,"call ==null ");
        }
        try {
            if(thirdPayAction!=null){
                thirdPayAction.requestPay(pay.getText().toString(),100,result);
            }

        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
});


public  class Result implements ThirdPayResult {

    @Override
    public void paySuccess() throws RemoteException {
        Log.d(TAG,"充值成功... ");
        qbNum.setText("100Q币");
        Toast.makeText(MainActivity.this,"充值成功",Toast.LENGTH_SHORT).show();
    }

    @Override
    public void payError(int errorCode, String msg) throws RemoteException {
        Log.d(TAG,"充值失败... ");
    }

    @Override
    public IBinder asBinder() {
        return null;
    }
}

客户端传递