Android实现闹钟功能小Dome

闹钟闹不醒的可以自己去调整下，这个最是最基本的

MainActivity

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) {
   //获取当前系统时间
   Calendar calendar = Calendar.getInstance();
   int huor = calendar.get(Calendar.HOUR_OF_DAY);
   int minute = calendar.get(Calendar.MINUTE);

//1 弹出时间对话框
   TimePickerDialog timePickerDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {

@Override
     public void onTimeSet(TimePicker view, int i, int i1) {
       Calendar c = Calendar.getInstance();
       c.set(Calendar.HOUR_OF_DAY, i);
       c.set(Calendar.MINUTE, i1);
       //2确定好选择的时间
       //3设置闹钟
       //4当时间一到，将执行的响应
       Intent intent=new Intent();
       intent.setAction("com.zking.risk_android_alarn_notification.RING");
       pendingIntent = PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);
       alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(), pendingIntent);
     }
   }, huor, 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.risk_android_alarn_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);
 }

}

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.rooster);
   mediaPlayer.start();
 }

public void close(View view) {
   mediaPlayer.stop();
   finish();
 }
}

RingReceived

public class RingReceived extends BroadcastReceiver{
 @Override
 public void onReceive(Context context, Intent intent) {
   if("com.zking.risk_android_alarn_notification.RING".equals(intent.getAction())){
     Log.i("test","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);
     //Intent的组成部分：ComponementName extra Action Data Categlay(分组) Flag
     context.startActivity(intent1);
   }
 }
}

activity_main

<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.zking.risk_android_alarn_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>

actiity_ring

<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:paddingLeft="@dimen/activity_horizontal_margin"
 android:paddingRight="@dimen/activity_horizontal_margin"
 android:paddingTop="@dimen/activity_vertical_margin"
 android:orientation="vertical"
 tools:context="com.zking.risk_android_alarn_notification.RingActivity"
 android:weightSum="1">
 <TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="亲爱的，该起床了"
   android:textSize="30sp"
   />

<TimePicker
   android:layout_width="324dp"
   android:layout_height="378dp"
   android:id="@+id/timePicker"
   android:layout_weight="0.30" />

<Button
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="关闭"
 android:onClick="close"
 />

</LinearLayout>

最后的清单配置

<activity android:name=".RingActivity"></activity>

<receiver android:name=".RingReceived">
     <intent-filter>
       <action android:name="com.zking.risk_android_alarn_notification.RING"></action>
     </intent-filter>

</receiver>

来源：http://blog.csdn.net/an_xiaoxiao/article/details/56852567