1.定义闹钟的提示Activity程序类-AlarmManager
package org.lxh.demo;import java.sql.Date;import java.text.SimpleDateFormat;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.os.Bundle;public class AlarmMessage extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); new AlertDialog.Builder(this)//设置弹出窗 .setIcon(R.drawable.pic_m) .setTitle("闹钟时间到！") .setMessage( "闹钟响起，现在时间是：" + new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss秒") .format(new Date(System .currentTimeMillis()))) .setPositiveButton("关闭", new DialogInterface.OnClickListener() { public void onClick(DialogInterface arg0, int arg1) { AlarmMessage.this.finish(); } }).show(); }}2.定义广播接受类-MyAlarmReceiver
package org.lxh.demo;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;public class MyAlarmReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Intent it=new Intent(context,AlarmMessage.class);//定义要操作的Intent it.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//传递一个新的任务标记 context.startActivity(it);//启动Intent }}<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TimePicker android:id="@+id/time" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <TextView android:id="@+id/msg" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="当前没有设置闹钟"/> <Button android:id="@+id/set" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="设置闹钟" /> <Button android:id="@+id/delete" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="删除闹钟" /></LinearLayout>
4.定义Activity操作闹钟
package org.lxh.demo;import java.util.Calendar;import android.app.Activity;import android.app.AlarmManager;import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.TimePicker;import android.widget.TimePicker.OnTimeChangedListener;import android.widget.Toast;public class Hello extends Activity { private AlarmManager alarm = null; private Button set = null; private Button delete = null; private TextView msg = null; private Calendar calendar = Calendar.getInstance(); private TimePicker time = null; private int hourOfDay = 0; private int minute = 0; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 生命周期方法 super.setContentView(R.layout.main); // 设置要使用的布局管理器 this.time = (TimePicker) super.findViewById(R.id.time); this.set = (Button) super.findViewById(R.id.set); this.delete = (Button) super.findViewById(R.id.delete); this.msg = (TextView) super.findViewById(R.id.msg); this.set.setOnClickListener(new SetOnClickListenerImpl()); this.delete.setOnClickListener(new DeleteOnClickListenerImpl()); this.alarm = (AlarmManager) super .getSystemService(Context.ALARM_SERVICE); this.time.setOnTimeChangedListener(new OnTimeChangedListenerImpl()); this.time.setIs24HourView(true); } private class SetOnClickListenerImpl implements OnClickListener { public void onClick(View arg0) { Intent intent = new Intent(Hello.this, MyAlarmReceiver.class);//指定跳转的Intent intent.setAction("org.lxh.action.setalarm");//定义广播的Action PendingIntent sender = PendingIntent.getBroadcast(Hello.this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);//指定PendingIntent Hello.this.alarm.set(AlarmManager.RTC_WAKEUP, Hello.this.calendar.getTimeInMillis(), sender);//设置闹钟 Hello.this.msg.setText("闹钟响起的时间是：" + Hello.this.hourOfDay + "时" + Hello.this.minute + "分。"); Toast.makeText(Hello.this, "闹钟设置成功！", Toast.LENGTH_LONG).show(); } } private class DeleteOnClickListenerImpl implements OnClickListener { public void onClick(View arg0) { if(Hello.this.alarm!=null){ Intent intent = new Intent(Hello.this, MyAlarmReceiver.class); PendingIntent sender = PendingIntent.getBroadcast(Hello.this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT); Hello.this.alarm.cancel(sender);//取消闹钟 Hello.this.msg.setText("当前没有设置闹钟。"); Toast.makeText(Hello.this, "闹钟删除成功！", Toast.LENGTH_LONG).show(); } } } private class OnTimeChangedListenerImpl implements OnTimeChangedListener { public void onTimeChanged(TimePicker view, int hourOfDay, int minute) { Hello.this.calendar.setTimeInMillis(System.currentTimeMillis());//设置当前时间 Hello.this.calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);//设置时间 Hello.this.calendar.set(Calendar.MINUTE, minute); Hello.this.calendar.set(Calendar.SECOND, 0); Hello.this.calendar.set(Calendar.MILLISECOND, 0); Hello.this.hourOfDay = hourOfDay; Hello.this.minute = minute; } }}5.在AndroidManfiest.xml文件中进行配置
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.lxh.demo" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="10" /> <application android:icon="@drawable/icon" android:label="@string/app_name" > <activity android:name=".Hello" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <span style="color:#ff0000;"><strong> <activity android:name=".AlarmMessage" /> <receiver android:name="org.lxh.demo.MyAlarmReceiver" android:enabled="true" android:process=".remote" > <intent-filter> <action android:name="org.lxh.action.setalarm" /> </intent-filter> </receiver></strong></span> </application></manifest>
运行实例：
