android 设置闹钟及通知示例

import android.app.AlarmManager;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.TimePickerDialog;import android.content.Context;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.app.NotificationCompat;import android.view.View;import android.widget.TimePicker;import java.util.Calendar;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 setAlarm(View view){    //获取当前系统的时间    Calendar calendar=Calendar.getInstance();    int hour=calendar.get(Calendar.HOUR_OF_DAY);    int minute=calendar.get(Calendar.MINUTE);    //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);        Intent intent=new Intent();        intent.setAction("com.zking.g150820_android28_alarm_notification.RING");        //将来时态的跳转 ang eng ing ong        PendingIntent pendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);        //设置闹钟        alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);        //时间一到，发送广播（闹钟响了）        //广播接受者中（跳转Activity）        // 跳转Activity，在这个Activity中播放音乐      }    },hour,minute,true);    timePickerDialog.show();  }  public void setAlarmCycle(View view){    //获取当前系统的时间    Calendar calendar=Calendar.getInstance();    int hour=calendar.get(Calendar.HOUR_OF_DAY);    int minute=calendar.get(Calendar.MINUTE);    //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);        Intent intent=new Intent();        intent.setAction("com.zking.g150820_android28_alarm_notification.RING");        //将来时态的跳转 ang eng ing ong        pendingIntent = PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);        //设置闹钟//        alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);        //设置周期闹钟        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000, pendingIntent);        //时间一到，发送广播（闹钟响了）        //广播接受者中（跳转Activity）        // 跳转Activity，在这个Activity中播放音乐      }    },hour,minute,true);    timePickerDialog.show();  }  public void cancelCycle(View view){    alarmManager.cancel(pendingIntent);  }  public void sendNotification(View view){    //实例化通知管理器    NotificationManager notificationManager= (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);    //实例化通知    NotificationCompat.Builder builder=new NotificationCompat.Builder(this);    builder.setContentTitle("今日大事件");    builder.setContentText("骑士击败勇士夺冠");    builder.setDefaults(NotificationCompat.DEFAULT_ALL);    builder.setAutoCancel(true);    builder.setSmallIcon(android.R.drawable.ic_media_play);    builder.setContentIntent(PendingIntent.getActivity(this,0x102,new Intent(this,RingActivity.class),0));    Notification notification=builder.build();    //发送通知    notificationManager.notify(0x101,notification);  }}

<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="ghq.zking.com.ghq_android_28.MainActivity">  <Button    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:text="设置闹钟(一次)"    android:onClick="setAlarm"    />  <Button    android:layout_width="match_parent"    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"    android:onClick="cancelCycle"    />  <Button    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:text="发送通知"    android:onClick="sendNotification"    /></LinearLayout>

public class RingReceived extends BroadcastReceiver {  @Override  public void onReceive(Context context, Intent intent) {    if ("ghq.zking.com.ghq_android_28_alarm_notification.RING".equals(intent.getAction())){      //跳转到Activity      Intent intent1=new Intent(context,RingActivity.class);      //给Intent设置标志位      intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);      context.startActivity(intent1);    }  }}

public class RingActivity extends AppCompatActivity {  private MediaPlayer mediaPlayer;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_ring);    mediaPlayer = MediaPlayer.create(this, R.raw.love);    mediaPlayer.start();  }  public void stop(View view){    mediaPlayer.stop();    finish();  }}