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>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。