Android 实现闹钟以及通知

2019-11-08 00:33:55

字体：大中小

来源：转载

供稿：网友

展示效果图: 设置闹钟

<?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.alarmandnotice_android.MainActivity"> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="设置闹钟" android:onClick="setAlarmOne" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:onClick="setAlarmCycle" android:text="设置闹钟(周期)" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="取消周期闹钟" android:onClick="cancelAlarmCycle" /></LinearLayout>

闹钟响铃后

<?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_dact" 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.alarmandnotice_android.DactActivity"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="闹钟响了！当前时间：" /> <TimePicker android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/timePicker" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="知道了" android:onClick="stop" /></LinearLayout>

通知栏通知

首先：我们要先实例化闹钟管理器，然后弹出对话框选择闹钟时间，在进行设置闹钟。

Activity:

package com.example.alarmandnotice_android;import android.app.AlarmManager;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.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); //闹钟管理器 alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE); } public void setAlarmOne(View view){ //获取当前系统的时间 Calendar calendar=Calendar.getInstance(); int hour=calendar.get(Calendar.HOUR_OF_DAY);//时 int minute=calendar.get(Calendar.MINUTE);//分 //先要弹出时间对话框 TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker timePicker, int i, int i1) { //确定选择好的时间给了Calendar Calendar c=Calendar.getInstance(); c.set(Calendar.HOUR_OF_DAY,i); c.set(Calendar.MINUTE,i1); Intent intent=new Intent(); intent.setAction("com.example.alarmandnotice_android.DCAT"); PendingIntent pendingIntent= PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0); //设置闹钟 alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent); } },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);//时 int minute=calendar.get(Calendar.MINUTE);//分 //先要弹出时间对话框 TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker timePicker, int i, int i1) { //确定选择好的时间给了Calendar Calendar c=Calendar.getInstance(); c.set(Calendar.HOUR_OF_DAY,i); c.set(Calendar.MINUTE,i1); Intent intent=new Intent(); intent.setAction("com.example.alarmandnotice_android.DCAT"); pendingIntent= PendingIntent.getBroadcast(MainActivity.this,0x103,intent,0); //设置闹钟 alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),6000, pendingIntent); } },hour,minute,true); timePickerDialog.show(); } public void cancelAlarmCycle(View view){ alarmManager.cancel(pendingIntent); }}

利用广播去通知闹钟响铃：

package com.example.alarmandnotice_android;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;/** * Created by Administrator on 2017/2/23. */public class Broadcat extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if ("com.example.alarmandnotice_android.DCAT".equals(intent.getAction())){ Intent intent1=new Intent(context,DactActivity.class); intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent1); } }}

然后进入了响铃的通知界面

package com.example.alarmandnotice_android;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.media.MediaPlayer;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.app.NotificationCompat;import android.view.View;public class DactActivity extends AppCompatActivity { private MediaPlayer mediaPlayer; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_dact); mediaPlayer = MediaPlayer.create(this, R.raw.f); mediaPlayer.start(); //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.setDefaults(NotificationCompat.DEFAULT_ALL);//默认的通知手机声音 builder.setContentTitle("闹钟响了!"); builder.setSmallIcon(android.R.drawable.ic_lock_idle_alarm); builder.setContentText("记得吃早餐噢!"); Intent intent=new Intent(); intent.setAction("com.example.alarmandnotice_android.DCAT"); PendingIntent pendingIntent= PendingIntent.getBroadcast(DactActivity.this,0x105,intent,0); builder.setContentIntent(pendingIntent); Notification notification=builder.build(); //发送通知 notificationManager.notify(0x104,notification); } public void stop(View view){ mediaPlayer.stop(); finish(); }}

上面我给了布局文件，你们可以理一下思路。

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.alarmandnotice_android"> <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> <activity android:name=".DactActivity"></activity> <receiver android:name=".Broadcat"> <intent-filter> <action android:name="com.example.alarmandnotice_android.DCAT"></action> </intent-filter> </receiver> </application></manifest>

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