自定义CursorAdapater的bindView称为77倍......我做了什么了吗？

问题描述

我读this 那里说没有问题，不用担心，但我想我需要一些安慰。

I read this question where it says not to worry about it but I guess I need some reassurance.

我自定义的CursorAdapter的bindView：

My custom CursorAdapter's bindView:

@Override
public void bindView(View view, Context context, Cursor c) {
    // get handles for views in xml
    ImageView imageView = (ImageView)view.findViewById(R.id.add_lvrow_image);
    TextView titleView = (TextView)view.findViewById(R.id.add_lvrow_title);

    // get data from cursor and "massage" if necessary
    String imageUri = c.getString(c.getColumnIndex(CollectionsTable.COL_IMAGEURI));
    String title = c.getString(c.getColumnIndex(CollectionsTable.COL_TITLE));

    // terrible time getting run-time sizes of imageView, hardcode for now
    int XML_WIDTH = 100;
    int XML_HEIGHT = 100;       

    Log.d(TAG, SCOPE + "bindView called: " +count);
    count++;

    // use static util class
    ImageUtils.loadBitmap(context, imageUri, imageView, XML_WIDTH, XML_HEIGHT);

我下面的系列的Andr​​oid教程装载大位图但移动 decodSmapledBitmapFromUri ， calculateInSmapleSize ， loadBitmap ， BitmapWorkerTask ， AsyncDrawable ， cancelPotentialWork 和 getBitmapWorkerTask 来的实用程序文件夹。

I'm following the series of Android tutorials for loading large bitmaps but have moved decodSmapledBitmapFromUri, calculateInSmapleSize, loadBitmap, BitmapWorkerTask, AsyncDrawable, cancelPotentialWork, and getBitmapWorkerTask to a utility folder.

...所以我打电话 loadBitmap 和它的链77次为一个ListView当前中有12行（SIX显示屏幕在加载时与只是一个提示7日放映的）。

...so I'm calling loadBitmap and it's chain 77 times for a listview that currently has 12 rows in it (six show on the screen at load time with just a hint of the 7th showing).

所以我不应该担心，这是正常的（此号码呼叫bindView和放大器，触发了所有这些以后的方法）？

So I shouldn't worry, this is okay (this number of calls to bindView & the firing off of all those subsequent methods)?

感谢您的话。

推荐答案

如果你的列表视图XML的android：layout_height不是match_parent将其更改为安卓layout_height =match_parent

If in your listview xml android:layout_height is not "match_parent" change it to android:layout_height="match_parent"

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