Question

使用内容解析程序创建播放列表会在Android 5.0版上运行的Amazon设备上抛出NullPointerException。它适用于所有其他设备。

抛出NPE的类方法：

public static long createPlaylist(final Context context,final String
    pname) {
            Uri uri = MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI;
            ContentValues v1 = new ContentValues();
            ContentResolver resolver = context.getContentResolver();
            v1.put(MediaStore.Audio.Playlists.NAME, pname);
            v1.put(MediaStore.Audio.Playlists.DATE_MODIFIED,
                    System.currentTimeMillis());
            resolver.insert(uri, v1); // line 280 throws NPE
        ...
        ..
        .
   }

这是堆栈跟踪（Thanks crashlytics）

Fatal Exception: java.lang.NullPointerException
Attempt to invoke virtual method 'boolean java.lang.String.contains(java.lang.CharSequence)' on a null object reference

android.os.Parcel.readException (Parcel.java:1554)
android.content.ContentResolver.insert (ContentResolver.java:1207)
com.musicplayer.Utilities.createPlaylist (Utilities.java:280)
com.musicplayer.Utilities$3.onClick (Utilities.java:333)
android.support.v7.app.AlertController$ButtonHandler.handleMessage (AlertController.java:153)
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:771)

可能的解决方案或建议将不胜感激。谢谢。

在Android 5.0上创建播放列表会抛出Nullpointerexception

0 个答案: