Question

我希望能够设置仅与特定应用程序关联的铃声。如果带有特殊前缀的消息到达，我的应用程序会拦截它并执行它必须执行的操作。在消息到达时，我希望能够通过铃声（专门播放该类消息）告诉用户“特殊”消息已到达。任何有领导的人，请帮忙。

Answer 1

您可以在应用程序中创建铃声首选项，并在收到任何通知时使用它并根据该铃声播放铃声。以下是为您的应用程序设置铃声的代码

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Load the preferences from an XML resource
        addPreferencesFromResource(R.xml.preferences);
    Uri defaultRingtoneUri = RingtoneManager.getDefaultUri(ringTonePref.getRingtoneType());
            String defaultRingtone = defaultRingtoneUri.toString();
            String selectedRingtone = ringTonePref.getPreferenceManager().getSharedPreferences()
                    .getString(NOTIFICATION_RINGTONE,defaultRingtone);
            if (defaultRingtone.equals(selectedRingtone)) {
                ringtoneUri = defaultRingtoneUri;
            } else {
                ringtoneUri = (TextUtils.isEmpty(selectedRingtone)) ? null : Uri.parse(selectedRingtone);
            }
            updateRingtoneSummary(ringTonePref, ringtoneUri);
            final Handler handler = new Handler() {
                @Override
                public void handleMessage(Message message) {
                    Uri defaultRingtoneUri = RingtoneManager.getDefaultUri(ringTonePref.getRingtoneType());
                    String defaultRingtone = defaultRingtoneUri.toString();
                    String selectedRingtone = ringTonePref.getPreferenceManager().getSharedPreferences()
                            .getString(NOTIFICATION_RINGTONE,defaultRingtone);
                    if (defaultRingtone.equals(selectedRingtone)) {
                        ringtoneUri = defaultRingtoneUri;
                    } else {
                        ringtoneUri = (TextUtils.isEmpty(selectedRingtone)) ? null : Uri.parse(selectedRingtone);
                    }
                    updateRingtoneSummary(ringTonePref, ringtoneUri);
                    super.handleMessage(message);
                }
            };
            ringTonePref.setOnPreferenceChangeListener(new OnPreferenceChangeListener (){
                public boolean onPreferenceChange(Preference arg0, Object arg1) {
                    handler.sendEmptyMessage(UPDATE_RINGTONE_SUMMARY);
                    return true;
                }
                });
        }


    private void updateRingtoneSummary(RingtonePreference ringtonePreference, final Uri ringtoneUri) {
                // Set the summary
                if (ringtoneUri == null) {
                    // The ringtone picker returns null for "silent" ringtone
                    ringtonePreference.setSummary(R.string.silent);
                } else {
                    Ringtone ringtone = RingtoneManager.getRingtone(this, ringtoneUri);
                    if (ringtone != null) {
                        ringtonePreference.setSummary(ringtone.getTitle(this));
                    }
                }
            }

preference.xml文件

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
        xmlns:android="http://schemas.android.com/apk/res/android">

    <PreferenceCategory
            android:title="@string/notificationsettings">
                <RingtonePreference
                android:key="pref_key_ringtone"
                android:title="@string/title_list_preference"
                android:dialogTitle="@string/title_list_preference"
                android:defaultValue="content://settings/system/notification_sound"
                android:ringtoneType="notification" />

        <CheckBoxPreference
                android:key="pref_key_vibrate"
                android:title="@string/vibrate"
                android:defaultValue="true"/>
    </PreferenceCategory>

</PreferenceScreen>

仅为特定应用程序设置铃声

1 个答案: