Android中的闹钟与通知(附Demo)

闹钟

闹钟管理器Alarm Manager

可以使用闹钟管理器触发事件，这些事件可以在特定的时刻或以固定的时间间隔发生
获得闹钟管理器：AlarmManager am=(AlarmManager)this.getSystemService(Caontext.ALARM_SERVICE)

设置周期闹钟

am.setRepeating(int type,Long triggerAMillis,时间间隔,PendingIntent operation)

取消周期闹钟

am.cancel(operation)

通知

Notification

显示在手机状态栏的通知

API

setDefaults():设置通知LED灯，音乐，震动等
setSound(Uri.parse(“file://sdcard/音乐.mp3”)):设置自定义音乐
setAutoCancel():设置点击通知后，状态栏自动删除通知
setContentTitle:设置通知标题
setSmallIcon():设置通知小图标
setLargeIcon():设置通知大图标
setTick():设置通知在状态栏的提示文本
setContentIntent():设置点击通知后将要启动的程序组件对应的PendingIntent

使用Notification步骤

• 得到通知管理者

NotificationManager
magener=(NotificationManager)getSystemService(NOTIFUCATION_SERVICE)

• 创建Notification

Notification notification=new Notification.Builder(this);

• 为Notification设置各种属性
• 通过通知管理者(NotificationManeger)发送通知(Notification)

notificationManager.notify(0x101,notification);

• 删除通知

manager.cancel(NOTIFICATION_ID)

权限

使用手机的震动，闪光灯需要添加权限
<1>震动权限:

<user-permission android:name="android.permission.VIBRATE">

<2>闪光灯权限:

<user-permission android:name="android.permission.FLASHLIGHT">

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下面附上Demo
activity_main.xml

<?xml version="1.0" encoding="utf-8"?><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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:orientation="vertical"    tools:context="com.example.zy_alarm_notification.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="设置闹钟(一次)"        android:onClick="setAlarmOne"        />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="设置闹钟(周期)"        android:onClick="setAlarmCycle"        />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="取消周期闹钟"        android:onClick="cancelAlarmCycle"        /></LinearLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {    private AlarmManager alarmManager;    private PendingIntent pendingIntent;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //获取闹钟管理者        alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);    }    public void setAlarmOne(View view){        //获取系统当前时间        Calendar calendar = Calendar.getInstance();        int hour=calendar.get(Calendar.HOUR_OF_DAY);        int minute = calendar.get(Calendar.MINUTE);        //01弹出对话框        TimePickerDialog timePickerDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {            @Override            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {                Calendar c=Calendar.getInstance();                c.set(Calendar.HOUR_OF_DAY,hourOfDay);                c.set(Calendar.MINUTE,minute);                //04.当之间一到，将执行的响应                Intent intent=new Intent();                intent.setAction("com.example.zy_alarm_notification.Ring");                PendingIntent pendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);                alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);            }        },hour,minute,true);        timePickerDialog.show();    }    public void setAlarmCycle(View view){        //获取当前系统时间        Calendar calendar=Calendar.getInstance();        int hour=calendar.get(Calendar.HOUR_OF_DAY);        int minute=calendar.get(Calendar.MINUTE);        //01.弹出时间对话框        TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {            @Override            public void onTimeSet(TimePicker timePicker, int i, int i1) {                Calendar c=Calendar.getInstance();                c.set(Calendar.HOUR_OF_DAY,i);                c.set(Calendar.MINUTE,i1);                //02.确定好选择的时间                //03.设置闹钟                //04.当之间一到，将执行的响应                Intent intent=new Intent();                intent.setAction("com.zking.g150831_android28_alarm_notification.RING");                pendingIntent = PendingIntent.getBroadcast(MainActivity.this,0x102,intent,0);                alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000, pendingIntent);            }        },hour,minute,true);        timePickerDialog.show();    }    public void cancelAlarmCycle(View view){        alarmManager.cancel(pendingIntent);    }}

RingReceived.java

public class RingReceived extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        if("com.example.zy_alarm_notification.Ring".equals(intent.getAction())){            Log.i("test1","收到广播了");            //跳转到Activity            Intent intent1=new Intent(context,RingActivity.class);            //给Intent设置标志位Flag            intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            context.startActivity(intent1);        }    }}

RingActivity

public class RingActivity extends AppCompatActivity {    private MediaPlayer mediaPlayer;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_ring);        //播放音乐        mediaPlayer = MediaPlayer.create(this, R.raw.nqmm);        mediaPlayer.start();        //显示通知栏        NotificationCompat.Builder notificationCompat=new NotificationCompat.Builder(this);        //设置参数        notificationCompat.setDefaults(NotificationCompat.DEFAULT_ALL);        notificationCompat.setContentTitle("提醒");        notificationCompat.setContentText("一大波僵尸正在门口");        notificationCompat.setSmallIcon(android.R.drawable.ic_lock_idle_alarm);        Notification notification=notificationCompat.build();        //通知管理器        NotificationManager notificationManager= (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);        //发送通知        notificationManager.notify(0x101,notification);    }    public void close(View view){        mediaPlayer.stop();        finish();    }}

activity_ring.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_ring"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:orientation="vertical"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.zy_alarm_notification.RingActivity">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="懒PIG，该起床了"        android:textSize="30sp"        />    <AnalogClock        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/analogClock" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="关闭"        android:onClick="close"        /></LinearLayout>

最后在清单文件中加入广播配置详解

 <receiver android:name=".RingReceived">            <intent-filter>                <action android:name="com.example.zy_alarm_notification.Ring"></action>            </intent-filter>        </receiver>

注意:在res下新建文件夹raw放入响铃的声音(多媒体播放音乐)

效果图

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