铃声设置项目 ------ android应用开发揭秘

Activity01.java

package com.yarin.android.Examples_07_08;


import java.io.File;


import android.app.Activity;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Activity01 extends Activity
{
/* 3个按钮 */
private Button mButtonRingtone;
private Button mButtonAlarm;
private Button mButtonNotification;


/* 自定义的类型 */
public static final int ButtonRingtone= 0;
public static final int ButtonAlarm= 1;
public static final int ButtonNotification= 2;
/* 铃声文件夹 */
private String strRingtoneFolder = "/sdcard/music/ringtones";
private String strAlarmFolder = "/sdcard/music/alarms";
private String strNotificationFolder = "/sdcard/music/notifications";




/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

mButtonRingtone = (Button) findViewById(R.id.ButtonRingtone);
mButtonAlarm = (Button) findViewById(R.id.ButtonAlarm);
mButtonNotification = (Button) findViewById(R.id.ButtonNotification);
/* 设置来电铃声 */
mButtonRingtone.setOnClickListener(new Button.OnClickListener() 
{
@Override
public void onClick(View arg0)
{
if (bFolder(strRingtoneFolder))
{
//打开系统铃声设置
Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
//类型为来电RINGTONE
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_RINGTONE);
//设置显示的title
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置来电铃声");
//当设置完成之后返回到当前的Activity
startActivityForResult(intent, ButtonRingtone);
}
}
});
/* 设置闹钟铃声 */
mButtonAlarm.setOnClickListener(new Button.OnClickListener() 
{
@Override
public void onClick(View arg0)
{
if (bFolder(strAlarmFolder))
{
//打开系统铃声设置
Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
//设置铃声类型和title
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_ALARM);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置闹铃铃声");
//当设置完成之后返回到当前的Activity
startActivityForResult(intent, ButtonAlarm);
}
}
});
/* 设置通知铃声 */
mButtonNotification.setOnClickListener(new Button.OnClickListener() 
{
@Override
public void onClick(View arg0)
{
if (bFolder(strNotificationFolder))
{
//打开系统铃声设置
Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
//设置铃声类型和title
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_NOTIFICATION);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置通知铃声");
//当设置完成之后返回到当前的Activity
startActivityForResult(intent, ButtonNotification);
}
}
});
}
/* 当设置铃声之后的回调函数 */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
// TODO Auto-generated method stub
if (resultCode != RESULT_OK)
{
return;
}
switch (requestCode)
{
case ButtonRingtone:
try
{
//得到我们选择的铃声
Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
//将我们选择的铃声设置成为默认
if (pickedUri != null)
{
RingtoneManager.setActualDefaultRingtoneUri(Activity01.this, RingtoneManager.TYPE_RINGTONE, pickedUri);
}
}
catch (Exception e)
{
}
break;
case ButtonAlarm:
try
{
//得到我们选择的铃声
Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
//将我们选择的铃声设置成为默认
if (pickedUri != null)
{
RingtoneManager.setActualDefaultRingtoneUri(Activity01.this, RingtoneManager.TYPE_ALARM, pickedUri);
}
}
catch (Exception e)
{
}
break;
case ButtonNotification:
try
{
//得到我们选择的铃声
Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
//将我们选择的铃声设置成为默认
if (pickedUri != null)
{
RingtoneManager.setActualDefaultRingtoneUri(Activity01.this, RingtoneManager.TYPE_NOTIFICATION, pickedUri);
}
}
catch (Exception e)
{
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
//检测是否存在指定的文件夹 
//如果不存在则创建
private boolean bFolder(String strFolder)
{
boolean btmp = false;
File f = new File(strFolder);
if (!f.exists())
{
if (f.mkdirs())
{
btmp = true;
}
else
{
btmp = false;
}
}
else
{
btmp = true;
}
return btmp;
}
}

main.xml

<?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" 
  > 
  <TextView 
  android:id="@+id/TextView01" 
  android:layout_width="fill_parent"  
  android:layout_height="wrap_content"  
  android:text="选择下面按钮来设置铃声"
  />
  <Button 
  android:id="@+id/ButtonRingtone" 
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:text="设置来电铃声" 
  />
  <Button 
  android:id="@+id/ButtonAlarm" 
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:text="设置闹钟铃声" 
  />
  <Button 
  android:id="@+id/ButtonNotification" 
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:text="设置通知铃声" 
  />
</LinearLayout>