android_52_启动服务

最新推荐文章于 2025-08-18 19:53:22 发布

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最新推荐文章于 2025-08-18 19:53:22 发布

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分类专栏： # Android_Service 文章标签： android Service

本文链接：https://blog.youkuaiyun.com/pre_eminent/article/details/54296255

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本文详细介绍了Android应用程序中服务组件的创建及使用方法。通过具体的代码示例，展示了如何定义服务类，实现服务生命周期的方法，以及如何在主活动中启动和停止服务。此外，还提供了界面布局的实现方式。

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效果:

清单:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.sg31.startservice"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".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>
        // 四大组件都要在清单文件中注册
        <service android:name=".SGService"></service>
        
    </application>

</manifest>

布局:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.sg31.startservice.MainActivity" 
    
    android:orientation="vertical">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开启服务" 
        android:onClick="startServiceBtnClicked"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="关闭服务" 
        android:onClick="stopServiceBtnClicked"
        />

</LinearLayout>

服务:

package com.sg31.startservice;

import java.io.FileDescriptor;
import java.io.PrintWriter;

import android.app.Service;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.IBinder;

public class SGService extends Service {

	@Override
	public IBinder onBind(Intent intent) {
		System.out.println("sg__onBind");
		return null;
	}

	@Override
	public void onCreate() {
		System.out.println("sg__create__1");
		super.onCreate();
	}

	
	@Override
	public int onStartCommand(Intent intent, int flags, int startId) {
		System.out.println("sg__startCommand__2");
		return super.onStartCommand(intent, flags, startId);
	}
	
	
	@Override
	@Deprecated
	public void onStart(Intent intent, int startId) {
		System.out.println("sg__start__3");
		super.onStart(intent, startId);
	}

	

	@Override
	public void onDestroy() {
		System.out.println("sg__destory");
		super.onDestroy();
	}


	@Override
	public boolean onUnbind(Intent intent) {
		System.out.println("sg__unbind");
		return super.onUnbind(intent);
	}

	@Override
	public void onRebind(Intent intent) {
		System.out.println("sg__onbind");
		super.onRebind(intent);
	}




	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		System.out.println("sg__ConfigurationChanged");
		super.onConfigurationChanged(newConfig);
	}
	@Override
	protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
		System.out.println("sg__dump");
		super.dump(fd, writer, args);
	}


}

主控制器:

package com.sg31.startservice;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;


public class MainActivity extends ActionBarActivity {

    private Intent intent;
	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        intent = new Intent(this, SGService.class);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    
    
    public void startServiceBtnClicked(View v){
        //显式启动服务
        startService(intent);
    }
    public void stopServiceBtnClicked(View v){
        //关闭服务
        stopService(intent);
    }
    
}