Android Content Provider IllegalArgumentException Неизвестный URL-адрес Content

Question

Я новичок в поставщике контента для Android. Я создаю простое приложение для Android с помощью поставщика контента. Каждый раз, когда я вставляю данные в базу данных, я получил ошибку IllegalArgumentException Неизвестный URL-адрес Content.

Мои ошибки LogCat

07-16 14:50:53.624: E/AndroidRuntime(32763): FATAL EXCEPTION: main 
07-16 14:50:53.624: E/AndroidRuntime(32763): Process: com.example.videouploadclient, PID: 32763 
07-16 14:50:53.624: E/AndroidRuntime(32763): java.lang.IllegalArgumentException: Unknown URL Content://com.example.videouploadclient.model.provider/video_table 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.content.ContentResolver.insert(ContentResolver.java:1203) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at com.example.videouploadclient.view.MainActivity$1.onClick(MainActivity.java:59) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.view.View.performClick(View.java:4780) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.view.View$PerformClick.run(View.java:19866) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.os.Handler.handleCallback(Handler.java:739) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.os.Handler.dispatchMessage(Handler.java:95) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.os.Looper.loop(Looper.java:135) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at android.app.ActivityThread.main(ActivityThread.java:5254) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at java.lang.reflect.Method.invoke(Native Method) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at java.lang.reflect.Method.invoke(Method.java:372) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
07-16 14:50:53.624: E/AndroidRuntime(32763): at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:117) 

Мой код для вставки данных в базу данных

Uri uri; 
ContentValues contentValues = new ContentValues(); 
contentValues.put(VideoEntry.COLUMN_ID, 111); 
contentValues.put(VideoEntry.COLUMN_TITLE, "my title"); 
contentValues.put(VideoEntry.COLUMN_DURATION, 9876); 
contentValues.put(VideoEntry.COLUMN_DATA_URL, ""); 
contentValues.put(VideoEntry.COLUMN_CONTENT_TYPE, "video/mp4"); 
contentValues.put(VideoEntry.COLUMN_STAR_RATING, 4); 
uri = getContentResolver().insert(VideoEntry.VIDEO_CONTENT_URI, contentValues); 

Мой контракт класса

public class VideoContract { 
    public static final String AUTHORITY = "com.example.videouploadclient.model.provider"; 
    private static final Uri BASE_URI = Uri.parse("Content://" + AUTHORITY); 


    public static final class VideoEntry implements BaseColumns { 
     public static String VIDEO_TABLE_NAME = "video_table"; 
     public static final Uri VIDEO_CONTENT_URI = BASE_URI.buildUpon() 
       .appendPath(VIDEO_TABLE_NAME) 
       .build(); 

//  table columns 
     public static final String COLUMN_ID = "id"; 
     public static final String COLUMN_TITLE = "title"; 
     public static final String COLUMN_DURATION = "duration"; 
     public static final String COLUMN_CONTENT_TYPE = "content_type"; 
     public static final String COLUMN_DATA_URL = "data_url"; 
     public static final String COLUMN_STAR_RATING = "star_rating"; 

     public static Uri buildRowAccessUri (long id) { 
      return ContentUris.withAppendedId(VIDEO_CONTENT_URI, id); 
     } 
    } 
} 

Мой помощник базы данных класса

public class VideoDatabaseHelper extends SQLiteOpenHelper { 

    private static String DATABASE_NAME = "video_upload_client_database"; 

    private static int DATABASE_VERSION = 1; 

    private static final String CREATE_TABLE_VIDEO = 
      "CREATE TABLE " + VideoEntry.VIDEO_TABLE_NAME 
      + "(" + VideoEntry.COLUMN_ID 
      + " INTEGER PRIMARY KEY, " 
      + VideoEntry.COLUMN_TITLE 
      + " TEXT, " 
      + VideoEntry.COLUMN_DURATION 
      + " INT, " 
      + VideoEntry.COLUMN_CONTENT_TYPE 
      + " TEXT, " 
      + VideoEntry.COLUMN_DATA_URL 
      + " TEXT, " 
      + VideoEntry.COLUMN_STAR_RATING 
      + " INT)"; 

    public VideoDatabaseHelper(Context context) { 
     super(context, 
       context.getCacheDir() 
       + File.separator 
       + DATABASE_NAME, 
       null, 
       DATABASE_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 
     db.execSQL(CREATE_TABLE_VIDEO); 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
     db.execSQL("DROP TABLE IF EXISTS " 
       + VideoEntry.VIDEO_TABLE_NAME); 
     onCreate(db); 
    } 

} 

Мой класс контент-провайдер

public class VideoProvider extends ContentProvider { 

    public static final int VIDEO_ITEMS = 100; 
    public static final int VIDEO_ITEM = 101; 

    public static final UriMatcher sUriMatcher = buildUriMatcher(); 


    public static UriMatcher buildUriMatcher() { 
     final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH); 

     matcher.addURI(VideoContract.AUTHORITY, VideoEntry.VIDEO_TABLE_NAME, VIDEO_ITEMS); 
     matcher.addURI(VideoContract.AUTHORITY, VideoEntry.VIDEO_TABLE_NAME, VIDEO_ITEM); 

     return matcher; 
    } 

    private static final String VIDEO_TABLE_NAME = VideoEntry.VIDEO_TABLE_NAME; 
    private VideoDatabaseHelper mDatabaseHelper; 


    @Override 
    public boolean onCreate() { 
     mDatabaseHelper = new VideoDatabaseHelper(getContext()); 
     return true; 
    } 

    private static String addKeyIdCheckToWhereStatement (String whereStatement, long id) { 
     String newWhereStatement; 
     if (TextUtils.isEmpty(whereStatement)) 
      newWhereStatement = ""; 
     else 
      newWhereStatement = whereStatement + " AND "; 

     return newWhereStatement + " _id = " 
       + "'" + id + "'"; 
    } 

    @Override 
    public Cursor query(Uri uri, String[] projection, String whereStatement, 
      String[] selectionArgs, String sortOrder) { 

     final SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder(); 

     switch (sUriMatcher.match(uri)) { 
     case VIDEO_ITEMS: 
      queryBuilder.setTables(VIDEO_TABLE_NAME); 
      break; 
     case VIDEO_ITEM: 
      queryBuilder.setTables(VIDEO_TABLE_NAME); 
      whereStatement = addKeyIdCheckToWhereStatement(whereStatement, ContentUris.parseId(uri)); 
      break; 
     default: 
      throw new IllegalArgumentException("Unknown URI " + uri); 
     } 

     final Cursor cursor = queryBuilder.query(mDatabaseHelper.getReadableDatabase(), 
       projection, whereStatement, selectionArgs, null, null, sortOrder); 
     cursor.setNotificationUri(getContext().getContentResolver(), uri); 
     return cursor; 
    } 

    @Override 
    public String getType(Uri uri) { 
     return null; 
    } 

    @Override 
    public Uri insert(Uri uri, ContentValues values) { 

     String table; 
     Uri returnUri; 

     switch (sUriMatcher.match(uri)) { 
     case VIDEO_ITEMS: 
      table = VideoEntry.VIDEO_TABLE_NAME; 
      returnUri = VideoEntry.VIDEO_CONTENT_URI; 
      break; 
     default: 
      throw new IllegalArgumentException("Unknown URI " 
        + uri); 
     } 

     final long insertRow = mDatabaseHelper.getWritableDatabase().insert(table, null, values); 

     if (insertRow > 0) { 
      Uri newUri = ContentUris.withAppendedId(returnUri, insertRow); 
      // Register to watch a content URI for changes. 
      getContext().getContentResolver().notifyChange(newUri, 
                  null); 

      return newUri; 
     } else { 
      throw new SQLException("Fail to add a new record into " 
        + uri); 
     } 
    } 

    @Override 
    public int delete(Uri uri, String selection, String[] selectionArgs) { 

     int rowsDeleted; 
     final SQLiteDatabase database = mDatabaseHelper.getWritableDatabase(); 

     switch (sUriMatcher.match(uri)) { 
     case VIDEO_ITEMS: 
      rowsDeleted = database.delete(VIDEO_TABLE_NAME, selection, selectionArgs); 
      break; 
     case VIDEO_ITEM: 
      rowsDeleted = database.delete(VIDEO_TABLE_NAME, 
        addKeyIdCheckToWhereStatement(selection, ContentUris.parseId(uri)), selectionArgs); 
      break; 
     default: 
      throw new IllegalArgumentException("Unknown URI " 
        + uri); 
     } 

     // Register to watch a content URI for changes. 
     getContext().getContentResolver().notifyChange(uri, 
                 null); 

     return rowsDeleted; 
    } 

    @Override 
    public int update(Uri uri, ContentValues values, String selection, 
      String[] selectionArgs) { 

     int rowsUpdated; 
     final SQLiteDatabase database = mDatabaseHelper.getWritableDatabase(); 

     switch (sUriMatcher.match(uri)) { 
     case VIDEO_ITEMS: 
      rowsUpdated = database.update(VIDEO_TABLE_NAME, values, selection, selectionArgs); 
      break; 
     case VIDEO_ITEM: 
      rowsUpdated = database.update(VIDEO_TABLE_NAME, values, addKeyIdCheckToWhereStatement(selection, ContentUris.parseId(uri)), selectionArgs); 
      break; 
     default: 
      throw new IllegalArgumentException("Unknown URI " 
        + uri); 
     } 

     // Register to watch a content URI for changes. 
     getContext().getContentResolver().notifyChange(uri, 
                 null); 

     return rowsUpdated; 
    } 

} 

Я не знаю, что случилось с моим кодом. Я искал многие связанные темы без ответа.

Answer 1

Ошибка: buildUriMatcher(). Два URI, которые вы добавляете, имеют одинаковый путь, VideoContract.VideoEntry.VIDEO_TABLE_NAME. Я думаю, что второй заменяет первый, поэтому код, возвращаемый по совпадению этого пути, равен VIDEO_ITEM. В вашем методе insert() нет никакого случая для VIDEO_ITEM, поэтому он выполняет обработку по умолчанию, которая должна вызывать IllegalArgumentException, указанную в вашей трассировке стека.

public static UriMatcher buildUriMatcher() { 
    final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH); 

    matcher.addURI(VideoContract.AUTHORITY, VideoContract.VideoEntry.VIDEO_TABLE_NAME, VIDEO_ITEMS); 
    matcher.addURI(VideoContract.AUTHORITY, VideoContract.VideoEntry.VIDEO_TABLE_NAME, VIDEO_ITEM); 

    return matcher; 
}