第一行代码Android学习（十）

第一行代码Android学习：第十部分主要涉及到Android多线程编程和Service的用法

1.DYHDM_09_00AndroidThreadServiceTest

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.dyhdm_09_00androidthreadtest"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.dyhdm_09_00androidthreadtest.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>        <service android:name=".MyService" >        service>        <service android:name=".MyIntentService" >        service>    application>manifest>

DownloadTask.java

/* * @Title:  DownloadTask.java * @Description:  TODO  * @author:  张志安 * @date:  2016-8-18 下午4:06:45 *  */package com.example.dyhdm_09_00androidthreadtest;import android.app.ProgressDialog;import android.content.Context;import android.os.AsyncTask;/** * TODO AsyncTask *  * @author 张志安 * @date: 2016-8-18 下午4:06:45 */public class DownloadTask extends AsyncTask<Void, Integer, Boolean> {    /**     * 重载方法 在后台任务开始执行前调用  执行准备工作     */    @Override    protected void onPreExecute() {        super.onPostExecute(null);        //显示进度条对话框    }    /**     * 重载方法 这个方法中所有的代码都会在子线程中执行 执行耗时操作     */    @Override    protected Boolean doInBackground(Void... params) {        publishProgress(0);        return null;    }    /**     * 重载方法 在调用publishProgress()后执行 进行UI操作     */    @Override    protected void onProgressUpdate(Integer... values) {        super.onProgressUpdate(values);    }    /**     * 重载方法 后台任务执行完毕并通过return语句进行返回时调用 执行任务收尾工作     */    @Override    protected void onPostExecute(Boolean result) {        super.onPostExecute(result);    }}

MainActivity.java

package com.example.dyhdm_09_00androidthreadtest;import com.example.dyhdm_09_00androidthreadtest.MyService.DownloadBinder;import android.app.Activity;import android.content.ComponentName;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.Handler;import android.os.IBinder;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class MainActivity extends Activity {    private Button bt1;    private TextView tv1;    private Button bt2;    private Button bt3;    private Button bt4;    private Button bt5;    private Button bt6;    private MyService.DownloadBinder downloadBinder;    private ServiceConnection connection = new ServiceConnection() {        @Override        public void onServiceDisconnected(ComponentName name) {        }        @Override        public void onServiceConnected(ComponentName name, IBinder service) {            downloadBinder = (MyService.DownloadBinder) service;            downloadBinder.startDown();            downloadBinder.getProgress();        }    };    private Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            switch (msg.what) {            case 1:                tv1.setText("123");                break;            default:                break;            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        bt1 = (Button) findViewById(R.id.bt1);        tv1 = (TextView) findViewById(R.id.tv1);        bt1.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                new Thread(new Runnable() {                    @Override                    public void run() {                        Message message = new Message();                        message.what = 1;                        handler.sendMessage(message);                    }                }).start();            }        });        // 启动异步任务        // new DownloadTask().execute();        bt2 = (Button) findViewById(R.id.bt2);        bt3 = (Button) findViewById(R.id.bt3);        bt2.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                // 开始服务                startService(new Intent(MainActivity.this, MyService.class));            }        });        bt3.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                // 停止服务                stopService(new Intent(MainActivity.this, MyService.class));            }        });        bt4 = (Button) findViewById(R.id.bt4);        bt5 = (Button) findViewById(R.id.bt5);        bt4.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                bindService(new Intent(MainActivity.this, MyService.class),                        connection, BIND_AUTO_CREATE);            }        });        bt5.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                unbindService(connection);            }        });        bt6 = (Button) findViewById(R.id.bt6);        bt6.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                startService(new Intent(MainActivity.this, MyIntentService.class));            }        });    }}

MyIntentService.java

/* * @Title:  MyIntentService.java * @Description:  TODO  * @author:  张志安 * @date:  2016-8-18 下午5:32:42 *  */package com.example.dyhdm_09_00androidthreadtest;import android.app.IntentService;import android.content.Intent;import android.util.Log;/** * TODO IntentService 异步的、会自动停止的服务 * @author  张志安 * @date:  2016-8-18 下午5:32:42 */public class MyIntentService extends IntentService {    /**      * <默认构造函数>     */    public MyIntentService() {        super("MyIntentService");    }    /**     * 重载方法     */    @Override    protected void onHandleIntent(Intent intent) {        Log.e("zza", Thread.currentThread().getId()+"");    }    /**     * 重载方法     */    @Override    public void onDestroy() {        super.onDestroy();        Log.e("zza", "onDestroy");    }}

MyService.java

/* * @Title:  MyService.java * @Description:  TODO  * @author:  张志安 * @date:  2016-8-18 下午4:33:53 *  */package com.example.dyhdm_09_00androidthreadtest;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.os.Binder;import android.os.IBinder;import android.util.Log;import android.widget.Toast;/** * TODO 服务 *  * @author 张志安 * @date: 2016-8-18 下午4:33:53 */public class MyService extends Service {    private DownloadBinder mBind = new DownloadBinder();    class DownloadBinder extends Binder {        public void startDown() {            Log.e("zza", "startDown");        }        public void getProgress() {            Log.e("zza", "getProgress");        }    }    /**     * 重载方法     */    @Override    public IBinder onBind(Intent intent) {        return mBind;    }    /**     * 重载方法 服务创建时调用     */    @Override    public void onCreate() {        super.onCreate();        // 处理耗时逻辑        // new Thread(new Runnable() {        //        // @Override        // public void run() {        // //具体处理逻辑        // }        // });        Log.e("zza", "onCreate");        Toast.makeText(this, "123", Toast.LENGTH_SHORT).show();        // 创建一个Notification对象，存储通知所需要的各种信息        Notification notification = new Notification(R.drawable.ic_launcher,                "hello zza", System.currentTimeMillis());        // 构建一个PendingIntentc传入setLatestEventInfo()的第四个参数，可以传null        Intent intent = new Intent(MyService.this, MainActivity.class);        PendingIntent pi = PendingIntent.getActivity(MyService.this, 0, intent,                0);        // 对通知的布局进行设定        notification.setLatestEventInfo(MyService.this, "Zza", "Hello", pi);        startForeground(1, notification);    }    /**     * 重载方法 每次服务启动时调用     */    @Override    public int onStartCommand(Intent intent, int flags, int startId) {        Log.e("zza", "onStartCommand");        return super.onStartCommand(intent, flags, startId);    }    /**     * 重载方法 服务销毁时调用     */    @Override    public void onDestroy() {        super.onDestroy();        Log.e("zza", "onDestroy");        // 处理耗时逻辑        // new Thread(new Runnable() {        //        // @Override        // public void run() {        // //具体处理逻辑        // stopSelf();        // }        // });    }}

2.DYHDM_09_01ServiceBestPractice

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.dyhdm_09_01servicebestpractice"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.dyhdm_09_01servicebestpractice.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>        <service android:name=".LongRunningService">service>        <receiver android:name=".AlarmReceiver">receiver>    application>manifest>

AlarmReceiver.java

/* * @Title:  AlarmReceiver.java * @Description:  TODO  * @author:  张志安 * @date:  2016-8-18 下午5:56:33 *  */package com.example.dyhdm_09_01servicebestpractice;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;/** * TODO 定时任务的广播接收者 * @author  张志安 * @date:  2016-8-18 下午5:56:33 */public class AlarmReceiver extends BroadcastReceiver {    /**     * 重载方法     */    @Override    public void onReceive(Context context, Intent intent) {        context.startService(new Intent(context,LongRunningService.class));    }}

LongRunningService.java

/* * @Title:  LongRunningService.java * @Description:  TODO  * @author:  张志安 * @date:  2016-8-18 下午5:49:16 *  */package com.example.dyhdm_09_01servicebestpractice;import java.util.Date;import android.app.AlarmManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.os.IBinder;import android.os.SystemClock;import android.util.Log;/** * TODO 设定一个定时任务 * @author  张志安 * @date:  2016-8-18 下午5:49:16 */public class LongRunningService extends Service {    /**     * 重载方法     */    @Override    public IBinder onBind(Intent intent) {        return null;    }    /**     * 重载方法     */    @Override    public int onStartCommand(Intent intent, int flags, int startId) {        new Thread(new Runnable() {            @Override            public void run() {                Log.e("zza", "----"+new Date().toString());            }        }).start();        AlarmManager manage = (AlarmManager) getSystemService(ALARM_SERVICE);        int anMinute = 10*1000;        long triggerAtTime = SystemClock.elapsedRealtime()+anMinute;        Intent i = new Intent(LongRunningService.this,AlarmReceiver.class);        PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, 0);        manage.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, pi);        return super.onStartCommand(intent, flags, startId);    }}

MainActivity.java

package com.example.dyhdm_09_01servicebestpractice;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        startService(new Intent(this,LongRunningService.class));    }}

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