android 服务组件中，可以用bindService来与一个服务相绑定。
下面的demo是一个在Activity界面组件中，调用Service服务组件中的myMethod()自定义的方法。这个demo可以解决在项目开发中。调用service里的数据。
这里在service中使用到了，代理模式。这是为了，给service组件和activity组件中间添加一个中间人。通过代理来传递数据。也就是binder对象。这个代理就是借口myInterface
下面是部分代码。
package com.example.demoservicefuncation;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
public class MainActivity extends Activity {
private View btnCallServiceFunc;
private Intent mService;
private MyInterface mBinder;
private MyServiceConnection conn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
btnCallServiceFunc = this.findViewById(R.id.btn);
btnCallServiceFunc.setOnClickListener(new MainOnclickListenter());
mService = new Intent(MainActivity.this, MyService.class);
}
private class MainOnclickListenter implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == btnCallServiceFunc) {
// 调用服务里的方法
bindService();
}
}
}
public void bindService() {
conn = new MyServiceConnection();
bindService(mService, conn, BIND_AUTO_CREATE); // 1.调用次方法，会调用MyService里的onBind()
}
public void unBindService() {
// 接触绑定
unbindService(conn);
}
private class MyServiceConnection implements ServiceConnection {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
// TODO Auto-generated method stub
// 3,绑定成功,在此处就可以用服务中的方法
MainActivity.this.mBinder = (MyInterface) service;
mBinder.callMethod();
}
@Override
public void onServiceDisconnected(ComponentName name) {
// TODO Auto-generated method stub
}
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
startService(mService); // Myservice需要在清单文件中配置
};
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
stopService(mService);
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
//接触绑定
unbindService(conn);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
package com.example.demoservicefuncation;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
public class MyService extends Service {
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
//2.接受到绑定信息.使用代理模式，将服务中的myMethod()暴露出去给activity中使用
MyCallMethod mCallMethod=new MyCallMethod();
return mCallMethod; //返回的mCallmethod对象会在onServiceConnected()中调用
}
private void myMethod(){
Toast.makeText(getApplicationContext(), "我是服务里的方法", 0).show();
}
private class MyCallMethod extends Binder implements MyInterface{
@Override
public void callMethod() {
// TODO Auto-generated method stub
//调用myMethod()
myMethod();
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
return super.onStartCommand(intent, flags, startId);
}
}
package com.example.demoservicefuncation;
public interface MyInterface {
public void callMethod();
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.demoservicefuncation"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.demoservicefuncation.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".MyService"
></service>
</application>
</manifest>
demo源码：
http://download.csdn.net/detail/pangzaifei/6935855