本文实例为大家分享了Android通过广播来实现闹钟的具体代码，供大家参考，具体内容如下
1.创建广播接收RepeatingAlarm.java
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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")) {//自定义的action intent = new Intent(context,AlarmActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent); } }} |
2.广播在Manifest.xml中配置：
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<receiver android:name=".RepeatingAlarm" > <intent-filter > <action android:name="com.gcc.alarm"/> </intent-filter> </receiver> |
3.通过代码设置一个闹钟
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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为设置闹钟的时间的Calendar对象 |
4.通过代码取消一个闹钟：
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/** * 取消闹钟 */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);//取消闹钟 } |
5.闹钟响是弹出的对化框并播放音乐用AlarmActivity.java类实现
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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("你有未处理的事件"); 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();// 关闭窗口 } }); builder.show().setCanceledOnTouchOutside(false); ; } /** * 取消闹钟 */ 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() { // 获取系统的闹钟服务 AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE); // 触发闹钟的时间（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); // 启动一次只会执行一次的闹钟 am.set(AlarmManager.RTC, triggerTime, op); // 指定时间重复执行闹钟 // am.setRepeating(AlarmManager.RTC,triggerTime,2000,op); }} |
6.注：
1.aty_alarm.xml为空布局，不需添加任何组件
2.使用MediaPlayer播放res/raw目录下音频文件的方法如下：
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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，闹钟时间设定可通过上篇博文来获取Calendar对象。
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服务器之家。
原文链接：https://blog.csdn.net/qq_31028313/article/details/52689237
