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我使用 RingtonePreference 并希望使用默认通知声音作为默认首选项值。为此，我遵循了以下建议：RingtonePreference 默认值

可悲的是，实际上我得到了一个InflateException我无法以任何方式摆脱的东西。这是android，我的手机中的错误还是我做错了什么？

我OnCreate在MyPreferenceActivity课堂上的方法：

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.preferences);
}

我的相关片段preferences.xml：

<RingtonePreference
      android:key="ringtone_preference"
      android:ringtoneType="notification"
      android:showDefault="true"
      android:showSilent="true"
      android:defaultValue="content://settings/system/notification_sound"
      android:title="Notification sound"
      android:summary=""
      />

LogCat 的异常：

06-06 22:44:07.697: E/ActivityThread(21031): Failed to inflate
06-06 22:44:07.697: E/ActivityThread(21031): android.view.InflateException: Binary XML file line #17: Error inflating class java.lang.reflect.Constructor
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.createItem(GenericInflater.java:397)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.onCreateItem(GenericInflater.java:417)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:428)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.rInflate(GenericInflater.java:481)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.rInflate(GenericInflater.java:493)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.inflate(GenericInflater.java:326)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.inflate(GenericInflater.java:263)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:269)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.PreferenceActivity.addPreferencesFromResource(PreferenceActivity.java:1457)
06-06 22:44:07.697: E/ActivityThread(21031):    at com.stanwise.timespacereminder.TSRPreferenceActivity.onCreate(TSRPreferenceActivity.java:44)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.Activity.performCreate(Activity.java:4465)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2034)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2105)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.ActivityThread.access$600(ActivityThread.java:133)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.os.Handler.dispatchMessage(Handler.java:99)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.os.Looper.loop(Looper.java:137)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.app.ActivityThread.main(ActivityThread.java:4586)
06-06 22:44:07.697: E/ActivityThread(21031):    at java.lang.reflect.Method.invokeNative(Native Method)
06-06 22:44:07.697: E/ActivityThread(21031):    at java.lang.reflect.Method.invoke(Method.java:511)
06-06 22:44:07.697: E/ActivityThread(21031):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
06-06 22:44:07.697: E/ActivityThread(21031):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
06-06 22:44:07.697: E/ActivityThread(21031):    at dalvik.system.NativeStart.main(Native Method)
06-06 22:44:07.697: E/ActivityThread(21031): Caused by: java.lang.reflect.InvocationTargetException
06-06 22:44:07.697: E/ActivityThread(21031):    at java.lang.reflect.Constructor.constructNative(Native Method)
06-06 22:44:07.697: E/ActivityThread(21031):    at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.GenericInflater.createItem(GenericInflater.java:383)
06-06 22:44:07.697: E/ActivityThread(21031):    ... 23 more
06-06 22:44:07.697: E/ActivityThread(21031): Caused by: java.lang.NullPointerException
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.MultiSelectListPreference.onGetDefaultValue(MultiSelectListPreference.java:211)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.Preference.<init>(Preference.java:260)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.DialogPreference.<init>(DialogPreference.java:69)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.DialogPreference.<init>(DialogPreference.java:90)
06-06 22:44:07.697: E/ActivityThread(21031):    at android.preference.MultiSelectListPreference.<init>(MultiSelectListPreference.java:49)
06-06 22:44:07.697: E/ActivityThread(21031):    ... 26 more

我也尝试插入一个字符串DEFAULT_NOTIFICATION_URI而不是content://settings/system/notification_sound，但没有任何成功。完全删除该android:defaultValue字段后，一切正常，除了我偏好的默认值是静音铃声而不是默认通知声音，这对我来说是不可接受的。

我到处搜索，找不到解决这个问题的方法。如果没有其他方法，我将使用此处发布的 hack：https ://stackoverflow.com/a/4298638/1265432 ，但我想妥善解决这个问题。

编辑：我的 CM9 Motorola Defy 和 4.0.4（API 15）和 2.1（API 7）的模拟器都存在问题，所以我认为手机不是问题。错误，还是我做错了什么？

4

2 回答 2

0

我在这里提交了 Android 的错误报告：http ://code.google.com/p/android/issues/detail?id=33220

与此同时，我使用了以下解决方法，我发现它比问题中链接的更干净。我修改了这个OnCreate方法MyPreferenceActivity：

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

     Uri notificationSound = Uri.parse(PreferenceManager.getDefaultSharedPreferences(this)
    .getString("ringtone_preference", System.DEFAULT_NOTIFICATION_URI.toString()));
    if (notificationSound.equals(System.DEFAULT_NOTIFICATION_URI)) {
        PreferenceManager.getDefaultSharedPreferences(this).edit()
            .putString("ringtone_preference", System.DEFAULT_NOTIFICATION_URI.toString())
            .commit();
    }

    addPreferencesFromResource(R.xml.preferences);
}
于 2012-06-17T17:17:36.317 回答
0

我评论了您的错误报告，并对问题的真正含义有所了解。

Anyway here's a simpler workaround that works for me:

Add a defaultValue for MultiSelectListPreference that comes after RingtonePreference in your preferences XML:

<MultiSelectListPreference
        ...
        android:defaultValue="@array/empty"
        ...
        />

And in your strings.xml:

<string-array name="empty"/>
于 2013-04-23T23:58:25.997 回答