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Android手機(jī)鬧鐘用法實(shí)例

更新時(shí)間：2015年09月27日 12:45:55 作者：Ruthless

這篇文章主要介紹了Android手機(jī)鬧鐘用法,以實(shí)例形式較為詳細(xì)的分析了Android實(shí)現(xiàn)鬧鐘功能的頁(yè)面布局及具體功能相關(guān)技巧,具有一定參考借鑒價(jià)值,需要的朋友可以參考下

本文實(shí)例講述了Android手機(jī)鬧鐘用法。分享給大家供大家參考。具體如下：

一、開(kāi)發(fā)手機(jī)鬧鐘主要用到了AlarmManager類，AlarmManager類提供了訪問(wèn)系統(tǒng)定時(shí)服務(wù)的途徑，開(kāi)發(fā)人員可以在程序中設(shè)置某個(gè)應(yīng)用程序在未來(lái)的某個(gè)時(shí)刻被執(zhí)行。當(dāng)AlarmManager定時(shí)時(shí)間到了之后，當(dāng)初注冊(cè)的Intent對(duì)象將會(huì)被系統(tǒng)廣播，進(jìn)而啟動(dòng)目標(biāo)程序。

二、在程序運(yùn)行時(shí)當(dāng)需要使用AlarmManager類時(shí)，可以通過(guò)Context對(duì)象的getSystemService(Context.ALARM_SERVICE)方法來(lái)獲得AlarmManager對(duì)象。

以下程序中使用時(shí)間選擇對(duì)話框設(shè)置鬧鐘的時(shí)間。

main.xml布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" 
 android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <Button android:id="@+id/btn" 
  android:text="設(shè)置鬧鐘"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content" />
</LinearLayout>

清單文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.ljq.activity" android:versionCode="1"
 android:versionName="1.0">
 <application android:icon="@drawable/icon"
  android:label="@string/app_name">
  <activity android:name=".MainActivity"
   android:label="@string/app_name">
   <intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category
     android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
  </activity>
  <activity android:name=".AlarmActivity" />
  <!-- android:process=":remote": 新開(kāi)一個(gè)進(jìn)程 -->
  <receiver android:name=".AlarmReceiver" android:process=":remote"/>
 </application>
 <uses-sdk android:minSdkVersion="7" />
</manifest>

AlarmReceiver類：

package com.ljq.activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver{
 @Override
 public void onReceive(Context context, Intent intent) {
  Intent i=new Intent(context, AlarmActivity.class);
  i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
  context.startActivity(i);
 }
}

AlarmActivity類：

package com.ljq.activity;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
public class AlarmActivity extends Activity {
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  //顯示對(duì)話框
  new AlertDialog.Builder(AlarmActivity.this).
   setTitle("鬧鐘").//設(shè)置標(biāo)題
   setMessage("時(shí)間到了！").//設(shè)置內(nèi)容
   setPositiveButton("知道了", new OnClickListener(){//設(shè)置按鈕
    public void onClick(DialogInterface dialog, int which) {
     AlarmActivity.this.finish();//關(guān)閉Activity
    }
   }).create().show();
 }
}

MainActivity類：

package com.ljq.activity;
import java.util.Calendar;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.Dialog;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.Toast;
public class MainActivity extends Activity{
 private Button btn=null;
 private AlarmManager alarmManager=null;
 Calendar cal=Calendar.getInstance();
 final int DIALOG_TIME = 0; //設(shè)置對(duì)話框id
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  alarmManager=(AlarmManager)getSystemService(Context.ALARM_SERVICE);
  btn=(Button)findViewById(R.id.btn);
  btn.setOnClickListener(new View.OnClickListener(){
   public void onClick(View view) {
    showDialog(DIALOG_TIME);//顯示時(shí)間選擇對(duì)話框
   }
  });
 }
 @Override
 protected Dialog onCreateDialog(int id) {
  Dialog dialog=null;
  switch (id) {
  case DIALOG_TIME:
   dialog=new TimePickerDialog(
     this, 
     new TimePickerDialog.OnTimeSetListener(){
      public void onTimeSet(TimePicker timePicker, int hourOfDay,int minute) {
       Calendar c=Calendar.getInstance();//獲取日期對(duì)象 
       c.setTimeInMillis(System.currentTimeMillis());  //設(shè)置Calendar對(duì)象
       c.set(Calendar.HOUR, hourOfDay);  //設(shè)置鬧鐘小時(shí)數(shù)
       c.set(Calendar.MINUTE, minute);   //設(shè)置鬧鐘的分鐘數(shù)
       c.set(Calendar.SECOND, 0);    //設(shè)置鬧鐘的秒數(shù)
       c.set(Calendar.MILLISECOND, 0);   //設(shè)置鬧鐘的毫秒數(shù)
       Intent intent = new Intent(MainActivity.this, AlarmReceiver.class); //創(chuàng)建Intent對(duì)象
       PendingIntent pi = PendingIntent.getBroadcast(MainActivity.this, 0, intent, 0); //創(chuàng)建PendingIntent
       //alarmManager.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pi);  //設(shè)置鬧鐘
       alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), pi);  //設(shè)置鬧鐘，當(dāng)前時(shí)間就喚醒
       Toast.makeText(MainActivity.this, "鬧鐘設(shè)置成功", Toast.LENGTH_LONG).show();//提示用戶
      }
     }, 
     cal.get(Calendar.HOUR_OF_DAY), 
     cal.get(Calendar.MINUTE),
     false);
   break;
  }
  return dialog;
 }
}

運(yùn)行結(jié)果：