android service跨应用传值,跨应用绑定service通信 问题

EditText获取text异常。

代码package com.example.administrator.startservice1;

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.os.RemoteException;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.view.View;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.EditText;

import com.example.administrator.startanservice.IMyAidlInterface;

public class MainActivity extends AppCompatActivity implements View.OnClickListener, ServiceConnection {

private Intent intent;

private EditText et;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

et = (EditText) findViewById(R.id.editText);

intent = new Intent();

intent.setComponent(new ComponentName("com.example.administrator.startanservice","com.example.administrator.startanservice.MyService"));

setContentView(R.layout.activity_main);

findViewById(R.id.btnStar).setOnClickListener(this);

findViewById(R.id.btnStop).setOnClickListener(this);

findViewById(R.id.btnBinSer).setOnClickListener(this);

findViewById(R.id.btnUnBinSer).setOnClickListener(this);

findViewById(R.id.btnSync).setOnClickListener(this);

// Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

// setSupportActionBar(toolbar);

//

// FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

// fab.setOnClickListener(new View.OnClickListener() {

// @Override

// public void onClick(View view) {

// Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)

// .setAction("Action", null).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.menu_main, menu);

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

//noinspection SimplifiableIfStatement

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

@Override

public void onClick(View v) {

switch (v.getId()){

case R.id.btnStar:

startService(intent);

break;

case R.id.btnStop:

stopService(intent);

break;

case R.id.btnBinSer:

bindService(intent, this, Context.BIND_AUTO_CREATE);

break;

case R.id.btnUnBinSer:

unbindService(this);

binder = null;

break;

case R.id.btnSync:

if(binder != null) {

try {

binder.setData(et.getText().toString());

} catch (RemoteException e) {

e.printStackTrace();

}

}

break;

}

}

@Override

public void onServiceConnected(ComponentName name, IBinder service) {

System.out.println("绑定成功");

binder = IMyAidlInterface.Stub.asInterface(service);

}

@Override

public void onServiceDisconnected(ComponentName name) {

System.out.println("解除绑定");

}

private IMyAidlInterface binder = null;

}

请帮忙看一下。谢谢