package com.example.binbin.testbinder; import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast; /**
* Created by binbin on 2016/7/29.
*/
public class MyService extends Service { //自定义的binder，包含了我们所需的操作
class myBinder extends Binder{ //要在Service进行的操作
public void sayHello(){ Log.d("TAG","sayHello");
Toast.makeText(MyService.this,"Hello",Toast.LENGTH_SHORT).show(); } public void sayBye(){ Log.d("TAG","sayBye");
Toast.makeText(MyService.this,"Bye",Toast.LENGTH_SHORT).show(); } }; @Nullable
@Override
//绑定服务和进行通信的时候，一定要返回一个自定义的Binder
public IBinder onBind(Intent intent) {
Log.d("TAG","onBind");
return new myBinder();
} @Override
public void onCreate() {
super.onCreate();
Log.d("TAG","onCreate");
} @Override
public int onStartCommand(Intent intent, int flags, int startId) { Log.d("TAG","onStartCommand");
return super.onStartCommand(intent, flags, startId); } @Override
public void onDestroy() {
super.onDestroy();
Log.d("TAG","onDestroy"); } @Override
public boolean onUnbind(Intent intent) { Log.d("TAG","onUnbind");
return super.onUnbind(intent);
}
}
自定义了myBinder，在Activity与Service绑定的时候，返回myBinder的实例，Activity就可以操作Service里面的方法了（sayHello和sayBye）。
Activity里面必须要有两个实例，一个是myBinder，用于与Service通信的。另一个是ServiceConnection，代表了activity与服务的连接，在后面绑定的时候要传入这个类的实例，只有两个方法，我们要重写。第一个是连接成功时要干什么，肯定是要把binder返回给activity里面的binder啦。
public class MainActivity extends AppCompatActivity {
//四个按钮
Button start, stop, bind, unbind,sayHello,sayBye;
//自定义的Binder对象
private MyService.myBinder binder;
//绑定服务要添加的对象，ServiceConnection代表与服务的连接，系统自己会调用，我们只需要实现，不需要显示调用
//绑定的时候要把这个对象传进去。
private ServiceConnection conn = new ServiceConnection() {
//连接成功
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
Log.d("TAG","Connect!");
binder = (MyService.myBinder) service; //获取其实例
//binder.sayHello(); //调用其方法
}
//连接失败
@Override
public void onServiceDisconnected(ComponentName name) {
}
};
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
start = (Button) findViewById(R.id.Start);
stop = (Button) findViewById(R.id.Stop);
bind = (Button) findViewById(R.id.Bind);
unbind = (Button) findViewById(R.id.unBind);
sayHello = (Button) findViewById(R.id.hello);
sayBye = (Button) findViewById(R.id.bye);
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, MyService.class);
startService(intent);
}
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, MyService.class);
stopService(intent);
}
});
bind.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this,MyService.class);
//传进去了conn对象
bindService(intent,conn,BIND_AUTO_CREATE);
}
});
unbind.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//解除只需要传入连接对象
unbindService(conn);
}
});
sayHello.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
binder.sayHello();
}
});
sayBye.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
binder.sayBye();
}
});
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}开启和绑定服务之后，按Hello，就可以使用服务里面的sayHello方法了。