Android Studio开发基础之起动Service，并通过从Activity向Service传递数据

       本实例演示启动Service，并通过从Activity向Service传递数据，新建一个Service，并敲如下代码：

package com.example.lhb.startservice;import android.app.Service;import android.content.Intent;import android.os.IBinder;import android.view.ViewDebug;import android.widget.Toast;public class MyService extends Service {    private boolean Running=false;    private String data="默认信息！！！";    public MyService() {    }    @Override    public IBinder onBind(Intent intent) {        // TODO: Return the communication channel to the service.        throw new UnsupportedOperationException("Not yet implemented");    }    @Override    public int onStartCommand(Intent intent, int flags, int startId) {         data=intent.getStringExtra("data");//这里的intent是参数里的，不是自定义的        return super.onStartCommand(intent, flags, startId);    }    @Override    public void onCreate() {        super.onCreate();        Running=true;        new Thread(){            @Override            public void run() {                super.run();                while (Running){                    System.out.println(data);                    try {                        sleep(3000);                    } catch (InterruptedException e) {                        e.printStackTrace();                    }                }            }        }.start();    }    @Override    public void onDestroy() {        super.onDestroy();        Running=false;    }}

package com.example.lhb.startservice;import android.content.Intent;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends ActionBarActivity {    private EditText inputText;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        findViewById(R.id.btnStartService).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                inputText= (EditText) findViewById(R.id.inputText);                if(inputText.getText().length()==0){                    Toast.makeText(MainActivity.this,"请输入传递的值！",Toast.LENGTH_SHORT).show();                    return;                }                Intent intent;                intent=new Intent(MainActivity.this,MyService.class);                intent.putExtra("data",inputText.getText().toString());                startService(intent);            }        });        findViewById(R.id.btnStopService).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent;                intent=new Intent(MainActivity.this,MyService.class);                stopService(intent);            }        });    }}