我如何設置水平滾動視圖的圖像對齊

Question

我已經創建了水平方式的圖像列表使用horizo​​ntalscrollview它的工作正常，但我想顯示最後的圖像總是因爲它捕獲的圖像。 我的佈局

<HorizontalScrollView 
       android:id="@+id/horizontal_scroll" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       > 

       <com.activities.MyHorizontalLayout 
        android:id="@+id/linear" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:orientation="horizontal" 
        /> 

</HorizontalScrollView> 

Horizo​​ntalScrollView類

public class MyHorizontalLayout extends LinearLayout { 

Context myContext; 
ArrayList<String> itemList = new ArrayList<String>(); 
public Bitmap selectedbm; 
public static String selectedfile; 

public MyHorizontalLayout(Context context) { 
    super(context); 
    myContext = context; 
} 

public MyHorizontalLayout(Context context, AttributeSet attrs) { 
    super(context, attrs); 
    myContext = context; 
} 

public MyHorizontalLayout(Context context, AttributeSet attrs, int defStyle) { 
    super(context, attrs, defStyle); 
    myContext = context; 
} 

void add(String path) { 
    int newIdx = itemList.size(); 
    itemList.add(path); 
    addView(getImageView(newIdx)); 

} 

void remove(String path,int ind) { 

    removeView(getImageView(ind)); 
    itemList.remove(ind); 


} 


ImageView getImageView(final int i) { 
    Bitmap bm = null; 
    if (i < itemList.size()) { 
     bm = decodeSampledBitmapFromUri(itemList.get(i), 220, 220); 
    } 

    ImageView imageView = new ImageView(myContext); 
    imageView.setLayoutParams(new LayoutParams(180, 220)); 
    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); 
    imageView.setImageBitmap(bm); 
    /*ImageGalleryEdit.edit.setVisibility(View.GONE); 
    ImageGalleryEdit.delete.setVisibility(View.GONE); 
    */ 
    ImageGalleryEdit.viewimg.setImageBitmap(decodeSampledBitmapFromUri(itemList.get(i), 1220, 1220)); 
    selectedfile = itemList.get(i); 

    imageView.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      ImageGalleryEdit.edit.setVisibility(View.VISIBLE); 
      ImageGalleryEdit.delete.setVisibility(View.VISIBLE); 

      ImageGalleryEdit.viewimg.setImageBitmap(decodeSampledBitmapFromUri(itemList.get(i), 1220, 1220)); 
      selectedbm = decodeSampledBitmapFromUri(itemList.get(i), 1220, 1220); 
      selectedfile = itemList.get(i); 

     } 
    }); 

    return imageView; 
} 

public Bitmap decodeSampledBitmapFromUri(String path, int reqWidth, 
     int reqHeight) { 
    Bitmap bm = null; 

    // First decode with inJustDecodeBounds=true to check dimensions 
    final BitmapFactory.Options options = new BitmapFactory.Options(); 
    options.inJustDecodeBounds = true; 
    BitmapFactory.decodeFile(path, options); 

    // Calculate inSampleSize 
    options.inSampleSize = calculateInSampleSize(options, reqWidth, 
      reqHeight); 

    // Decode bitmap with inSampleSize set 
    options.inJustDecodeBounds = false; 
    bm = BitmapFactory.decodeFile(path, options); 

    return bm; 
} 

public int calculateInSampleSize(

BitmapFactory.Options options, int reqWidth, int reqHeight) { 
    // Raw height and width of image 
    final int height = options.outHeight; 
    final int width = options.outWidth; 
    int inSampleSize = 1; 

    if (height > reqHeight || width > reqWidth) { 
     if (width > height) { 
      inSampleSize = Math.round((float) height/(float) reqHeight); 
     } else { 
      inSampleSize = Math.round((float) width/(float) reqWidth); 
     } 
    } 

    return inSampleSize; 
    } 
} 

Answer 1

嘗試使用fullScroll性質後填充數據給horizo​​ntalscrollview：

hs.postDelayed(new Runnable() { 
    public void run() { 
     hs.fullScroll(View.FOCUS_RIGHT); 
    } 
}, 100);