最近研究源码程序，改了改手机短信铃声的源码，最近总结了下铃声的代码，写个activity继承PreferenceActivity有：手机短信铃声，手机铃声，闹钟铃声，还有sdcard中的铃声，通过选择相应的铃声，然后读取到xml文件里面，通过读取preference.xml文件，intent传个参数进去intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, phoneUri);打开对话框的时候就默认选中上次被选中的音乐。程序流程：在onCreate（）方法中加入addPreferencesFromResource(R.xml.preferences);加载xml文件。@Override重写onPreferenceTreeClick（）方法，处理点击事件，在打开对话框铃声的时候，先读取xml文件，判断是否有值，如果有值，就传值intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, phoneUri);然后进行选择铃声。通过onActivityResult（）接受传递过来的uri，系统默认的铃声是通过data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);方法来获取uri的，而sdcard中的铃声通过Uri pickedUri = data.getData();来获得选中的uri的，再然后通过editor.commit(); 来提交接受过来的uri和音乐的名字整个流程大概就是这样。想要代码的请留言留下邮箱！

大明原创，转载请标明出处：http://blog.csdn.net/wdaming1986/article/details/6919653

下面请看截图：

第一次打开程序的界面：点击“选择短信铃声”后的界面：

选择铃声的dialog后的界面： 点击“选择手机铃声”后的界面：

点击“选择手机铃声”后的界面：点击“选择闹钟铃声”后的dialog界面：

点击“选择sdcard中的铃声”后的界面： 点击“选择曲目”后弹出sdcard的界面：

下面代码附上：

在SoundSettingActivity这个工程下面：

一、在com.cn.android.daming包的SoundSettingMainActivity.java类中的代码：

<span style="font-size: 16px; color: #000000;">package com.cn.android.daming;import android.content.Intent;import android.content.SharedPreferences;import android.media.Ringtone;import android.media.RingtoneManager;import android.net.Uri;import android.os.Bundle;import android.preference.Preference;import android.preference.PreferenceActivity;import android.preference.PreferenceManager;import android.preference.PreferenceScreen;public class SoundSettingMainActivity extends PreferenceActivity {private static final int SMS_RINGTONE_PICKED = 1;private static final int PHONE_RINGTONE_PICKED = 2;private static final int ALARM_RINGTONE_PICKED = 3;private static final int SDCARD_RINGTONE_PICKED = 4;public static final String NOTIFICATION_RINGTONE = "pref_notification_ringtone";public static final String NOTIFICATION_RINGTONE_TITLE_NAME = "pref_notification_ringtone_name";public static final String PHONE_RINGTONE = "pref_phone_ringtone";public static final String PHONE_RINGTONE_TITLE_NAME = "pref_phone_ringtone_title_name";public static final String ALARM_RINGTONE = "pref_alarm_ringtone";public static final String ALARM_RINGTONE_TITLE_NAME = "pref_alarm_ringtone_title_name";public static final String SDCARD_RINGTONE = "pref_sdcard_ringtone";public static final String SDCARD_RINGTONE_TITLE_NAME = "pref_sdcard_ringtone_title_name";private String notificationStr;private String phoneStr;private String alarmStr;private String sdcardStr;private Preference mMmsSoundsPref;private Preference mPhoneSoundsPref;private Preference mAlarmSoundsPref;private Preference mSdcardSoundsPref;@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.preferences); setMessagePreferences(); setDefaultPreferences(); } private void setMessagePreferences() { mMmsSoundsPref = findPreference("pref_sms_ringtone"); mPhoneSoundsPref = findPreference("pref_phone_ringtone"); mAlarmSoundsPref = findPreference("pref_alarm_ringtone"); mSdcardSoundsPref = findPreference("pref_sdcard_ringtone"); } private void setDefaultPreferences(){ SharedPreferences innersharedPreferences = PreferenceManager.getDefaultSharedPreferences(SoundSettingMainActivity.this); String notificationRingtoneTitleName = innersharedPreferences.getString(NOTIFICATION_RINGTONE_TITLE_NAME, null); if(notificationRingtoneTitleName!=null){ mMmsSoundsPref.setSummary(notificationRingtoneTitleName); }else{ mMmsSoundsPref.setSummary(getString(R.string.pref_summary_notification_ringtone)); } String phoneRingtoneTitleName = innersharedPreferences.getString(PHONE_RINGTONE_TITLE_NAME, null); if(phoneRingtoneTitleName!=null){ mPhoneSoundsPref.setSummary(phoneRingtoneTitleName); }else{ mPhoneSoundsPref.setSummary(getString(R.string.pref_summary_phone_ringtone)); } String alarmRingtoneTitleName = innersharedPreferences.getString(ALARM_RINGTONE_TITLE_NAME, null); if(alarmRingtoneTitleName!=null){ mAlarmSoundsPref.setSummary(alarmRingtoneTitleName); }else{ mAlarmSoundsPref.setSummary(getString(R.string.pref_summary_alarm_ringtone)); } String sdcardRingtoneTitleName = innersharedPreferences.getString(SDCARD_RINGTONE_TITLE_NAME, null); if(sdcardRingtoneTitleName!=null){ mSdcardSoundsPref.setSummary(sdcardRingtoneTitleName); }else{ mSdcardSoundsPref.setSummary(getString(R.string.pref_summary_sdcard_ringtone)); } }@Overridepublic boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,Preference preference) {if (preference == mMmsSoundsPref){doPickSmsRingtone();}else if(preference == mPhoneSoundsPref){doPickPhoneRingtone();} else if(preference == mAlarmSoundsPref){ doPickAlarmRingtone();} else if(preference == mSdcardSoundsPref){ doPickSdcardRingtone(); }return super.onPreferenceTreeClick(preferenceScreen, preference);}private void doPickSmsRingtone(){SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); notificationStr = sharedPreferences.getString(NOTIFICATION_RINGTONE, null); Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER); // Allow user to pick 'Default' intent.putExtra(RingtoneManager.EXTRA_RINGTONE_SHOW_DEFAULT, true); // Show only ringtones intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_NOTIFICATION); //set the default Notification value intent.putExtra(RingtoneManager.EXTRA_RINGTONE_DEFAULT_URI, RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)); // Don't show 'Silent' intent.putExtra(RingtoneManager.EXTRA_RINGTONE_SHOW_SILENT, true); Uri notificationUri; if (notificationStr != null) { notificationUri = Uri.parse(notificationStr); // Put checkmark next to the current ringtone for this contact intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, notificationUri); } else { // Otherwise pick default ringtone Uri so that something is selected. notificationUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); // Put checkmark next to the current ringtone for this contact intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, notificationUri); } // Launch! startActivityForResult(intent, SMS_RINGTONE_PICKED);}private void doPickPhoneRingtone(){SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); phoneStr = sharedPreferences.getString(PHONE_RINGTONE, null); Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER); // Allow user to pick 'Default' intent.putExtra(RingtoneManager.EXTRA_RINGTONE_SHOW_DEFAULT, true); // Show only ringtones intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_RINGTONE); //set the default Notification value intent.putExtra(RingtoneManager.EXTRA_RINGTONE_DEFAULT_URI, RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE)); // Don't show 'Silent' intent.putExtra(RingtoneManager.EXTRA_RINGTONE_SHOW_SILENT, true); Uri phoneUri; if (phoneStr != null) { phoneUri = Uri.parse(phoneStr); // Put checkmark next to the current ringtone for this contact intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, phoneUri); } else { // Otherwise pick default ringtone Uri so that something is selected. phoneUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE); // Put checkmark next to the current ringtone for this contact intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, phoneUri); } startActivityForResult(intent, PHONE_RINGTONE_PICKED);}private void doPickAlarmRingtone(){SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); alarmStr = sharedPreferences.getString(ALARM_RINGTONE, null); Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER); // Allow user to pick 'Default' intent.putExtra(RingtoneManager.EXTRA_RINGTONE_SHOW_DEFAULT, true); // Show only ringtones intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_ALARM); //set the default Notification value intent.putExtra(RingtoneManager.EXTRA_RINGTONE_DEFAULT_URI, RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM)); // Don't show 'Silent' intent.putExtra(RingtoneManager.EXTRA_RINGTONE_SHOW_SILENT, true); Uri alarmUri; if (alarmStr != null) { alarmUri = Uri.parse(alarmStr); // Put checkmark next to the current ringtone for this contact intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, alarmUri); } else { // Otherwise pick default ringtone Uri so that something is selected. alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM); // Put checkmark next to the current ringtone for this contact intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, alarmUri); } startActivityForResult(intent, ALARM_RINGTONE_PICKED);}private void doPickSdcardRingtone(){SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); sdcardStr = sharedPreferences.getString(SDCARD_RINGTONE, null); Uri sdcardUri = null; if (sdcardStr != null) { sdcardUri = Uri.parse(sdcardStr); } Intent innerIntent = new Intent(Intent.ACTION_GET_CONTENT); innerIntent.setType("audio/*"); //you could lookup the framework the type of audio,if you don`t want use the Recorder use the note code// innerIntent.setType("audio/aac");// innerIntent.setType("audio/mp3");// innerIntent.setType("audio/midi"); // Put checkmark next to the current ringtone for this contact innerIntent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, sdcardUri); Intent wrapperIntent = Intent.createChooser(innerIntent, null); startActivityForResult(wrapperIntent, SDCARD_RINGTONE_PICKED);}@Overrideprotected void onResume() {setDefaultPreferences();super.onResume();}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); SharedPreferences.Editor editor = sharedPreferences.edit(); if (resultCode != RESULT_OK) { return; }switch (requestCode) { case SMS_RINGTONE_PICKED:{ Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI); if(null == pickedUri){ editor.putString(NOTIFICATION_RINGTONE_TITLE_NAME, getString(R.string.select_ringtone_slient)); editor.putString(NOTIFICATION_RINGTONE, null); editor.commit(); }else{ Ringtone ringtone = RingtoneManager.getRingtone(SoundSettingMainActivity.this, pickedUri); String strRingtone = ringtone.getTitle(SoundSettingMainActivity.this); editor.putString(NOTIFICATION_RINGTONE_TITLE_NAME, strRingtone); editor.putString(NOTIFICATION_RINGTONE, pickedUri.toString()); editor.commit(); } break; } case PHONE_RINGTONE_PICKED:{ Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI); if(null == pickedUri){ editor.putString(PHONE_RINGTONE_TITLE_NAME, getString(R.string.select_ringtone_slient)); editor.putString(PHONE_RINGTONE, null); editor.commit(); }else{ phoneStr = pickedUri.toString(); Ringtone ringtone = RingtoneManager.getRingtone(SoundSettingMainActivity.this, pickedUri); String strRingtone = ringtone.getTitle(SoundSettingMainActivity.this); editor.putString(PHONE_RINGTONE_TITLE_NAME, strRingtone); editor.putString(PHONE_RINGTONE, pickedUri.toString()); editor.commit(); } break; } case ALARM_RINGTONE_PICKED:{ Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI); if(null == pickedUri){ editor.putString(ALARM_RINGTONE_TITLE_NAME, getString(R.string.select_ringtone_slient)); editor.putString(ALARM_RINGTONE, null); editor.commit(); }else{ Ringtone ringtone = RingtoneManager.getRingtone(SoundSettingMainActivity.this, pickedUri); String strRingtone = ringtone.getTitle(SoundSettingMainActivity.this); editor.putString(ALARM_RINGTONE_TITLE_NAME, strRingtone); editor.putString(ALARM_RINGTONE, pickedUri.toString()); editor.commit(); } break; } case SDCARD_RINGTONE_PICKED:{ Uri pickedUri = data.getData(); if(null != pickedUri){ notificationStr = pickedUri.toString(); Ringtone ringtone = RingtoneManager.getRingtone(SoundSettingMainActivity.this, pickedUri); String strRingtone = ringtone.getTitle(SoundSettingMainActivity.this); editor.putString(SDCARD_RINGTONE_TITLE_NAME, strRingtone); editor.putString(SDCARD_RINGTONE, pickedUri.toString()); editor.commit(); } break; } default:break;}}}</span>

二、在res目录下加入xml文件，加入preferences.xml中的代码：

<span style="font-size: 16px;"><?xml version="1.0" encoding="utf-8"?><PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="@string/pref_sounds_storage_title" android:key="pref_key_storage_settings"> <Preference android:layout="?android:attr/preferenceLayoutChild" android:key="pref_sms_ringtone" android:ringtoneType="notification" android:title="@string/pref_title_notification_ringtone" android:summary="@string/pref_summary_notification_ringtone" /> <Preference android:layout="?android:attr/preferenceLayoutChild" android:key="pref_phone_ringtone" android:ringtoneType="notification" android:title="@string/pref_title_phone_ringtone" android:summary="@string/pref_summary_phone_ringtone" /> <Preference android:layout="?android:attr/preferenceLayoutChild" android:key="pref_alarm_ringtone" android:ringtoneType="notification" android:title="@string/pref_title_alarm_ringtone" android:summary="@string/pref_summary_alarm_ringtone" /> <Preference android:layout="?android:attr/preferenceLayoutChild" android:key="pref_sdcard_ringtone" android:ringtoneType="notification" android:title="@string/pref_title_sdcard_ringtone" android:summary="@string/pref_summary_sdcard_ringtone" /> </PreferenceCategory></PreferenceScreen></span>

三、在values目录下的string中的代码：

<span style="font-size: 16px;"><?xml version="1.0" encoding="utf-8"?><resources> <string name="hello">Hello World, SoundSettingMainActivity!</string> <string name="app_name">SoundSettingApp</string> <string name="pref_sounds_storage_title">大明原创SoundSetting</string> <string name="pref_title_notification_ringtone">选择短信铃声</string> <string name="pref_summary_notification_ringtone">默认短信铃声</string> <string name="pref_title_phone_ringtone">选择手机铃声</string> <string name="pref_summary_phone_ringtone">默认手机铃声</string> <string name="pref_title_alarm_ringtone">选择闹钟铃声</string> <string name="pref_summary_alarm_ringtone">默认闹钟铃声</string> <string name="pref_title_sdcard_ringtone">选择Sdcard中的铃声</string> <string name="pref_summary_sdcard_ringtone">默认Sdcard铃声</string> <string name="select_ringtone_slient">静音</string></resources></span>

四、在AndroidManifest.xml中的代码：

<span style="font-size: 16px;"><?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.cn.android.daming" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".SoundSettingMainActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest></span>

完整代码下载地址：http://download.csdn.net/detail/wdaming1986/3736718

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