android Demo 闹钟

MP3是可以设成来电铃声的，你在内存卡里，建立一个media的文件夹，再在这个文件夹里面建立名为audio的文件夹，最后再在audio文件夹里建立三个文件夹，分别是notifications（放置在这个文件夹里的铃声可以设置短信音）、ringtones（这个用于设置来电铃声）、ALARMS（这个用于设置闹铃声）

package com.lx;

import java.util.Calendar;
import java.util.Date;
import java.util.zip.DataFormatException;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.SystemClock;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;

public class AlarmClockActivity extends Activity {

private static final String TAG= "AlarmClockActivity";
Button btnStart;
Button btnStop;

TextView mTextView;
private Button btnReal;
Calendar calendar;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.main);
calendar = Calendar.getInstance();

mTextView = (TextView) findViewById(R.id.mTextView);
btnStart = (Button) findViewById(R.id.btnStart);
btnStop = (Button) findViewById(R.id.btnStop);
btnReal = (Button) findViewById(R.id.btnReal);


btnReal.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
AlarmManager alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(getApplicationContext(), AlarmReceiver.class);
int requestCode = 0;
PendingIntent pendIntent = PendingIntent.getBroadcast(getApplicationContext(),
requestCode, intent, PendingIntent.FLAG_UPDATE_CURRENT);

// 5秒后发送广播，然后每个10秒重复发广播。广播都是直接发到AlarmReceiver的
long triggerAtTime = SystemClock.elapsedRealtime() + 5 * 1000;
int interval = 10 * 1000;
alarmMgr.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, interval, pendIntent);

}
});

btnStart.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
calendar.setTimeInMillis(System.currentTimeMillis());
int mHour = calendar.get(Calendar.HOUR_OF_DAY);
int mMinute = calendar.get(Calendar.MINUTE);
new TimePickerDialog(AlarmClockActivity.this,
new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view,
int hourOfDay, int minute) {
calendar.setTimeInMillis(System
.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
/* 建立Intent和PendingIntent，来调用目标组件 */
Intent intent = new Intent(AlarmClockActivity.this,
AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent
.getBroadcast(AlarmClockActivity.this, 0,
intent, 0);
AlarmManager am;
/* 获取闹钟管理的实例 */
am = (AlarmManager) getSystemService(ALARM_SERVICE);
/* 设置闹钟 */
am.set(AlarmManager.RTC_WAKEUP, calendar
.getTimeInMillis(), pendingIntent);

Date date = calendar.getTime();

long l = calendar.getTimeInMillis();

DateFormat format = new DateFormat();

final CharSequence s = format.format("MM-dd-yyyy h:mmaa", date);
Log.i(TAG, "------>format: "+ s);

/* 设置周期闹 */
am.setRepeating(AlarmManager.RTC_WAKEUP, l
, (24 * 60 * 60 * 1000),
pendingIntent);
String tmpS = "设置闹钟时间为" + format(hourOfDay)
+ ":" + format(minute);
mTextView.setText(tmpS);
}
}, mHour, mMinute, true).show();
}
});

btnStop.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(AlarmClockActivity.this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
AlarmClockActivity.this, 0, intent, 0);
AlarmManager am;
/* 获取闹钟管理的实例 */
am = (AlarmManager) getSystemService(ALARM_SERVICE);
/* 取消 */
am.cancel(pendingIntent);
mTextView.setText("闹钟已取消！");
}
});

}
/* 格式化字符串(7:3->07:03) */
private String format(int x) {
String s = "" + x;
if (s.length() == 1)
s = "0" + s;
return s;
}

}

----------------------------------------------------------- main.xml

android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>

android:id="@+id/btnStart"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="startClock"

/>

android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="real"

/>
android:id="@+id/btnStop"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="stopClock"

/>


-------------------------------------------

package com.lx;

import java.io.File;
import java.io.IOException;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;

public class AlarmReceiver extends BroadcastReceiver {

private static final String TAG = "AlarmReceiver";
private MediaPlayer mPlayer = null;

@Override
public void onReceive(Context arg0, Intent arg1) {

Toast.makeText(arg0, "你设置的闹钟时间到了", Toast.LENGTH_LONG).show();
try {
doPlay();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
DestoryPlay();
e.printStackTrace();
}
}

public String getSDPath(){
File sdDir = null;
boolean sdCardExist = Environment.getExternalStorageState()
.equals(android.os.Environment.MEDIA_MOUNTED); //判断sd卡是否存在
if (sdCardExist)
{
sdDir = Environment.getExternalStorageDirectory();//获取跟目录
}
return sdDir.toString();

}
private void doPlay() throws IllegalArgumentException, IllegalStateException, IOException{

mPlayer = new MediaPlayer();
String path = getSDPath()+ "/"+ "music/2007060905434704.mp3";
Log.i(TAG, "====>Path "+ path);
mPlayer.setDataSource(path);
mPlayer.prepare();
mPlayer.start();

}

private void DestoryPlay(){
if (null != mPlayer){
mPlayer.stop();
mPlayer.release();
mPlayer = null;
}
}
}
-----------------------------------------------------------------AndroidManifest.xml

package="com.lx"
android:versionCode="1"
android:versionName="1.0">

android:label="@string/app_name">