android网络编程之通讯源代码

package com.iceskysl.TestServiceHolder; import android.app.Activity; 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.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class TestServiceHolder extends Activity { private boolean _isBound; private TestService _boundService; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setTitle("Service Test"); initButtons(); } private ServiceConnection _connection = new ServiceConnection() { public void onServiceConnected(ComponentName className, IBinder service) { _boundService = ((TestService.LocalBinder)service).getService(); Toast.makeText(TestServiceHolder.this, "Service connected", Toast.LENGTH_SHORT).show(); } public void onServiceDisconnected(ComponentName className) { // unexpectedly disconnected,we should never see this happen. _boundService = null; Toast.makeText(TestServiceHolder.this, "Service connected", Toast.LENGTH_SHORT).show(); } }; private void initButtons() { Button buttonStart = (Button) findViewById(R.id.start_service); buttonStart.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { startService(); } }); Button buttonStop = (Button) findViewById(R.id.stop_service); buttonStop.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { stopService(); } }); Button buttonBind = (Button) findViewById(R.id.bind_service); buttonBind.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { bindService(); } }); Button buttonUnbind = (Button) findViewById(R.id.unbind_service); buttonUnbind.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { unbindService(); } }); } private void startService() { Intent i = new Intent(this, TestService.class); this.startService(i); } private void stopService() { Intent i = new Intent(this, TestService.class); this.stopService(i); } private void bindService() { Intent i = new Intent(this, TestService.class); bindService(i, _connection, Context.BIND_AUTO_CREATE); _isBound = true; } private void unbindService() { if (_isBound) { unbindService(_connection); _isBound = false; } } }