自定义CursorAdapater的bindView调用了77次...我做错了什么吗? [英] Custom CursorAdapater's bindView called 77 times...have I done something wrong?

问题描述

我阅读了这个问题，其中说不用担心它，但是我想我需要放心.

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

我的自定义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);

我正在遵循系列Android教程，用于加载大型位图，但已移动 decodSmapledBitmapFromUri ， calculateInSmapleSize ， loadBitmap ， BitmapWorkerTask ， AsyncDrawable ， cancelPotentialWork 和 getBitmapWorkerTask 到实用程序文件夹.

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.

...所以我要调用 loadBitmap ，它当前有12行的列表视图要链接77次(加载时在屏幕上显示六行，仅提示第7行)显示).

...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).

所以我不用担心，这没关系(对bindView的调用数量以及所有这些后续方法的触发次数)?

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

感谢您的发言.

推荐答案

如果在列表视图中，xml android:layout_height不是"match_parent"，请将其更改为 android: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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