实现闹钟运行的效果如下：

通知栏的运行后效果图如下：

布局文件（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.g150825_android28.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="setAlarm" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="取消周期闹钟" android:onClick="cancelAlarm" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="发送通知" android:onClick="send" /></LinearLayout>

activity_ring.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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" tools:context="com.example.g150825_android28.RingActivity"> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="停止" android:onClick="stop" android:id="@+id/button" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="慈禧太后青霜来了，赶紧起床！" android:id="@+id/textView" android:textSize="30sp" android:layout_below="@+id/button" android:layout_centerHorizontal="true" android:layout_marginTop="36dp" /></RelativeLayout>

RingActivity

package com.example.g150825_android28;import android.media.MediaPlayer;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;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.sqbm); mediaPlayer.start(); } public void stop(View view){ mediaPlayer.stop(); finish(); }}

MyReceiver

package com.example.g150825_android28;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast;public class MyReceiver extends BroadcastReceiver { public MyReceiver() { } @Override public void onReceive(Context context, Intent intent) { if("com.example.g150825_android28.RING".equals(intent.getAction())){ Toast.makeText(context, "闹钟响了", Toast.LENGTH_SHORT).show(); //跳转到Activity Intent intent1=new Intent(context,RingActivity.class); //设置标志位(Flag) intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent1); } }}

清单文件（AndroidManifest.xml）

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.g150825_android28"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <receiver android:name=".MyReceiver" android:enabled="true" android:exported="true"> <intent-filter> <action android:name="com.example.g150825_android28.RING" /> </intent-filter> </receiver> <activity android:name=".RingActivity" android:theme="@style/Theme.AppCompat.Dialog" ></activity> </application></manifest>

以上所述是小编给大家介绍的Android 使用AlarmManager和NotificationManager来实现闹钟和通知栏，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！