需要帮助创建循环列表视图

Question

我想在android系统创建循环列表视图（滚动到最后一个元素它开始显示第一个元素后，继续），但我并没有发现网络上为同任何帮助。我只是想知道的是Android的任何默认属性/组件支持循环列表视图或者我需要把一些逻辑相同的创建自定义列表视图。

Answer 1

入住这circular-list-adapter

Answer 2

如果使用我创建MyCircularCursor类LoadersCallbacks它包装的典型光标这样的：

@Override 
public void onLoadFinished(Loader<Cursor> pCursorLoader, Cursor pCursor) { 
     mItemListAdapter.swapCursor(new MyCircularCursor(pCursor)); 
} 

的装饰类代码是在这里：

/** 
* {@link MyCircularCursor}<br/> 
* <br/> 
* @author Vilius Kraujutis 
* @since 31 Jan 2013 02:09:48 
* 
*/ 
public class MyCircularCursor implements Cursor { 

private Cursor mCursor; 

/** 
* @param pCursor 
*/ 
public MyCircularCursor(Cursor pCursor) { 
    mCursor = pCursor; 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getCount() 
*/ 
@Override 
public int getCount() { 
    return mCursor.getCount() == 0 ? 0 : Integer.MAX_VALUE; 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getPosition() 
*/ 
@Override 
public int getPosition() { 
    return mCursor.getPosition(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#move(int) 
*/ 
@Override 
public boolean move(int pOffset) { 
    return mCursor.move(pOffset); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#moveToPosition(int) 
*/ 
@Override 
public boolean moveToPosition(int pPosition) { 
    int position = MathUtils.mod(pPosition, mCursor.getCount()); 
    return mCursor.moveToPosition(position); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#moveToFirst() 
*/ 
@Override 
public boolean moveToFirst() { 
    return mCursor.moveToFirst(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#moveToLast() 
*/ 
@Override 
public boolean moveToLast() { 
    return mCursor.moveToLast(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#moveToNext() 
*/ 
@Override 
public boolean moveToNext() { 
    if (mCursor.isLast()) { 
     mCursor.moveToFirst(); 
     return true; 
    } else { 
     return mCursor.moveToNext(); 
    } 
    // return mCursor.moveToNext(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#moveToPrevious() 
*/ 
@Override 
public boolean moveToPrevious() { 
    if (mCursor.isFirst()) { 
     mCursor.moveToLast(); 
     return true; 
    } else { 
     return mCursor.moveToPrevious(); 
    } 
    // return mCursor.moveToPrevious(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#isFirst() 
*/ 
@Override 
public boolean isFirst() { 
    // return mCursor.isFirst(); 
    return false; 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#isLast() 
*/ 
@Override 
public boolean isLast() { 
    return false; 
    // return mCursor.isLast(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#isBeforeFirst() 
*/ 
@Override 
public boolean isBeforeFirst() { 
    return false; 
    // return mCursor.isBeforeFirst(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#isAfterLast() 
*/ 
@Override 
public boolean isAfterLast() { 
    return false; 
    // return mCursor.isAfterLast(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getColumnIndex(java.lang.String) 
*/ 
@Override 
public int getColumnIndex(String pColumnName) { 
    return mCursor.getColumnIndex(pColumnName); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getColumnIndexOrThrow(java.lang.String) 
*/ 
@Override 
public int getColumnIndexOrThrow(String pColumnName) throws IllegalArgumentException { 

    return mCursor.getColumnIndexOrThrow(pColumnName); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getColumnName(int) 
*/ 
@Override 
public String getColumnName(int pColumnIndex) { 

    return mCursor.getColumnName(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getColumnNames() 
*/ 
@Override 
public String[] getColumnNames() { 

    return mCursor.getColumnNames(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getColumnCount() 
*/ 
@Override 
public int getColumnCount() { 

    return mCursor.getColumnCount(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getBlob(int) 
*/ 
@Override 
public byte[] getBlob(int pColumnIndex) { 

    return mCursor.getBlob(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getString(int) 
*/ 
@Override 
public String getString(int pColumnIndex) { 

    return mCursor.getString(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getShort(int) 
*/ 
@Override 
public short getShort(int pColumnIndex) { 

    return mCursor.getShort(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getInt(int) 
*/ 
@Override 
public int getInt(int pColumnIndex) { 

    return mCursor.getInt(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getLong(int) 
*/ 
@Override 
public long getLong(int pColumnIndex) { 

    return mCursor.getLong(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getFloat(int) 
*/ 
@Override 
public float getFloat(int pColumnIndex) { 

    return mCursor.getFloat(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getDouble(int) 
*/ 
@Override 
public double getDouble(int pColumnIndex) { 

    return mCursor.getDouble(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getType(int) 
*/ 
@Override 
public int getType(int pColumnIndex) { 
    // return mCursor.getType(pColumnIndex); 
    return 0; 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#isNull(int) 
*/ 
@Override 
public boolean isNull(int pColumnIndex) { 

    return mCursor.isNull(pColumnIndex); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#deactivate() 
*/ 
@Override 
public void deactivate() { 
    mCursor.deactivate(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#requery() 
*/ 
@Override 
@Deprecated 
public boolean requery() { 

    return mCursor.requery(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#close() 
*/ 
@Override 
public void close() { 
    mCursor.close(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#isClosed() 
*/ 
@Override 
public boolean isClosed() { 

    return mCursor.isClosed(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#registerContentObserver(android.database.ContentObserver) 
*/ 
@Override 
public void registerContentObserver(ContentObserver pObserver) { 
    mCursor.registerContentObserver(pObserver); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#unregisterContentObserver(android.database.ContentObserver) 
*/ 
@Override 
public void unregisterContentObserver(ContentObserver pObserver) { 
    mCursor.unregisterContentObserver(pObserver); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#registerDataSetObserver(android.database.DataSetObserver) 
*/ 
@Override 
public void registerDataSetObserver(DataSetObserver pObserver) { 
    mCursor.registerDataSetObserver(pObserver); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#unregisterDataSetObserver(android.database.DataSetObserver) 
*/ 
@Override 
public void unregisterDataSetObserver(DataSetObserver pObserver) { 
    mCursor.unregisterDataSetObserver(pObserver); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#setNotificationUri(android.content.ContentResolver, 
* android.net.Uri) 
*/ 
@Override 
public void setNotificationUri(ContentResolver pCr, Uri pUri) { 
    mCursor.setNotificationUri(pCr, pUri); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getWantsAllOnMoveCalls() 
*/ 
@Override 
public boolean getWantsAllOnMoveCalls() { 

    return mCursor.getWantsAllOnMoveCalls(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#getExtras() 
*/ 
@Override 
public Bundle getExtras() { 

    return mCursor.getExtras(); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#respond(android.os.Bundle) 
*/ 
@Override 
public Bundle respond(Bundle pExtras) { 

    return mCursor.respond(pExtras); 
} 

/* 
* (non-Javadoc) 
* @see android.database.Cursor#copyStringToBuffer(int, android.database.CharArrayBuffer) 
*/ 
@Override 
public void copyStringToBuffer(int pColumnIndex, CharArrayBuffer pBuffer) { 
    mCursor.copyStringToBuffer(pColumnIndex, pBuffer); 

} 

}