编写绑定的 Service服务

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编写绑定的 Service服务

Toast
logcat
MainActivity

package annoy.service_test;import android.app.Service;import android.content.ComponentName;import android.content.Intent;import android.content.ServiceConnection;import android.os.IBinder;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends AppCompatActivity {    Button button1, button2, button3;    BindService.MyBinder binder;    // 定义一个连接ServiceConnection对象    private ServiceConnection conn = new ServiceConnection() {        @Override        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {            System.out.println("--Service Conneciton");            // 获取Service的onBinder方法所返回的MyBinder对象            binder = (BindService.MyBinder) iBinder;        }        @Override        public void onServiceDisconnected(ComponentName componentName) {            System.out.println("--Service Disconnected--");        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        // 获取界面中的3个按钮        button1 = (Button) findViewById(R.id.button1);        button2 = (Button) findViewById(R.id.button2);        button3 = (Button) findViewById(R.id.button3);        // 创建启动Service的Intent        final Intent intent = new Intent(this, BindService.class);        button1.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                // 绑定指定Service                bindService(intent, conn, Service.BIND_AUTO_CREATE);            }        });        button2.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                // 解除绑定                unbindService(conn);            }        });        button3.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                // 获取并显示Service的Count值                Toast.makeText(MainActivity.this, "Service的count值为:" + binder.getCount(),                        Toast.LENGTH_SHORT).show();            }        });    }}

Service编写
BindService

package annoy.service_test;import android.app.Service;import android.content.Intent;import android.os.Binder;import android.os.IBinder;public class BindService extends Service {    private int count = 0;    private boolean quite = false;    // 定义onBinder方法返回的对象    private MyBinder binder = new MyBinder();    // 继承Binder来实现IBunder    public class MyBinder extends Binder    {        public int getCount()         {            return count;        }    }    public BindService() {    }    @Override    public IBinder onBind(Intent intent) {        // throw new UnsupportedOperationException("Not yet implemented");        System.out.println("Service is Binded");        return binder;    }    @Override    public void onCreate()     {        super.onCreate();        System.out.println("Service is Create");        // 启动一条线程        new Thread()         {            @Override            public void run()             {                while (!quite) {                    try                     {                        Thread.sleep(100);                    }                     catch (InterruptedException e)                     {                        e.printStackTrace();                    }                    count++;                }            }        }.start();    }    @Override    public boolean onUnbind(Intent intent) {        System.out.println("Service is Unbind");        return true;    }    @Override    public void onDestroy() {        super.onDestroy();        this.quite = true;        System.out.println("Service is Destroyed");    }}

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