Android實現(xiàn)簡易鬧鐘功能

更新時間：2020年06月19日 10:34:15 作者：snow_lyGirl

這篇文章主要為大家詳細介紹了Android實現(xiàn)簡易鬧鐘功能，文中示例代碼介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了Android通過廣播來實現(xiàn)鬧鐘的具體代碼，供大家參考，具體內容如下

1.創(chuàng)建廣播接收RepeatingAlarm.java

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class RepeatingAlarm extends BroadcastReceiver{

 @Override
 public void onReceive(Context context, Intent intent) {
  if (intent.getAction()!=null&&intent.getAction().equals("com.gcc.alarm")) {//自定義的action
   intent = new Intent(context,AlarmActivity.class);
   intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
   context.startActivity(intent);
  }
 }
}

2.廣播在Manifest.xml中配置：

<receiver 
 android:name=".RepeatingAlarm"
 >
  <intent-filter > 
   <action android:name="com.gcc.alarm"/> 
   </intent-filter> 
</receiver>

3.通過代碼設置一個鬧鐘

Intent intent = new Intent(this, RepeatingAlarm.class);
intent.setAction("com.gcc.alarm");
PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
// Schedule the alarm!
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
     am.set(AlarmManager.RTC,
       c.getTimeInMillis(), sender);//c為設置鬧鐘的時間的Calendar對象

4.通過代碼取消一個鬧鐘：

/**
 * 取消鬧鐘
 */
private void cancleAlarm(){
 Intent intent = new Intent(AlarmActivity.this,RepeatingAlarm.class);
 intent.setAction("com.gcc.alarm");
 PendingIntent sender = PendingIntent.getBroadcast(AlarmActivity.this, 0, intent, 0);
 // And cancel the alarm.
 AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
  am.cancel(sender);//取消鬧鐘
 }

5.鬧鐘響是彈出的對化框并播放音樂用AlarmActivity.java類實現(xiàn)

import android.app.Activity;
import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.os.Bundle;

public class AlarmActivity extends Activity {

 MediaPlayer mp;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.aty_alarm);
  mp = new MediaPlayer();
  AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep);
  try {
   mp.setDataSource(file.getFileDescriptor(), file.getStartOffset(),
     file.getLength());
   mp.prepare();
   file.close();
  } catch (IOException e) {
   e.printStackTrace();
  }
  mp.setVolume(0.5f, 0.5f);
  mp.setLooping(true);
  mp.start();
  alarmOialog();
 }

 @Override
 protected void onResume() {
  super.onResume();
 }

 @Override
 protected void onDestroy() {
  super.onDestroy();
  if (mp != null) {
   if (mp.isPlaying()) {
    mp.stop();
   }
   mp.release();
  }
 }

 public void alarmOialog() {
  AlertDialog.Builder builder = new AlertDialog.Builder(this);
  builder.setMessage("你有未處理的事件");
  builder.setPositiveButton("稍后提醒",
    new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialogInterface, int i) {
      alarm();
      finish();
     }
    });

  builder.setNegativeButton("停止", new DialogInterface.OnClickListener() {

   @Override
   public void onClick(DialogInterface dialogInterface, int i) {
    cancleAlarm();
    finish();// 關閉窗口
   }
  });
  builder.show().setCanceledOnTouchOutside(false);
  ;

 }

 /**
  * 取消鬧鐘
  */
 private void cancleAlarm() {
  // Create the same intent, and thus a matching IntentSender, for
  // the one that was scheduled.
  Intent intent = new Intent(AlarmActivity.this, RepeatingAlarm.class);
  intent.setAction("com.gcc.alarm");
  PendingIntent sender = PendingIntent.getBroadcast(AlarmActivity.this,
    0, intent, 0);

  // And cancel the alarm.
  AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
  am.cancel(sender);
 }

 private void alarm() {
  // 獲取系統(tǒng)的鬧鐘服務
  AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
  // 觸發(fā)鬧鐘的時間（毫秒）
  long triggerTime = System.currentTimeMillis() + 10000;
  Intent intent = new Intent(this, RepeatingAlarm.class);
  intent.setAction("com.gcc.alarm");
  PendingIntent op = PendingIntent.getBroadcast(this, 0, intent, 0);
  // 啟動一次只會執(zhí)行一次的鬧鐘
  am.set(AlarmManager.RTC, triggerTime, op);
  // 指定時間重復執(zhí)行鬧鐘
  // am.setRepeating(AlarmManager.RTC,triggerTime,2000,op);
 }

}

6.注：

1.aty_alarm.xml為空布局，不需添加任何組件
2.使用MediaPlayer播放res/raw目錄下音頻文件的方法如下：

mp = new MediaPlayer();
  AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep);
  try {
   mp.setDataSource(file.getFileDescriptor(), file.getStartOffset(),
     file.getLength());

7.功能不是很完善，需要的可以修改使用，鬧鐘時間設定可通過上篇博文來獲取Calendar對象。

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。

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