<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="org.frxm.day17_service.MainActivity">
<Button
android:id="@+id/btnStart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="开启服务"
android:onClick="click"/>
<Button
android:id="@+id/btnEnd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="关闭服务"
android:onClick="click"/>
</LinearLayout>
package org.frxm.day17_service;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
public class MyService extends Service {
public MyService() {
}
@Override
public void onCreate() {
super.onCreate();
Log.i("tag","onCreate");
}
@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) {
String msg = intent.getStringExtra("msg");
Log.i("tag",msg);
for (int i=0;i<=100;i++){
Log.i("tag",""+i);
}
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.i("tag","onDestroy");
}
}
package org.frxm.day17_service;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void click(View view) {
Intent intent=new Intent(this,MyService.class);
switch (view.getId()){
case R.id.btnStart:
intent.putExtra("msg","服务开启了");
startService(intent);//开启一个服务
break;
case R.id.btnEnd:
stopService(intent);
break;
}
}
}
<service
android:name=".MyService"
android:enabled="true"
android:exported="true"></service>