这是我的自定义选择器（StateListDrawable）

This is my custom selector (StateListDrawable)

<selector
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:drawable="@drawable/common_cell_background" />
    <item
        android:state_pressed="true"
        android:drawable="@drawable/common_cell_background_highlight" />
    <item
        android:state_focused="true"
        android:drawable="@drawable/common_cell_background_highlight" />
    <item
        android:state_selected="true"
        android:drawable="@drawable/common_cell_background_highlight" />
</selector>

在这两方面，common_cell_background和common_cell_background_highlight是XML。低于code：

Both, common_cell_background and common_cell_background_highlight are XML. Code below:

common_cell_background.xml

common_cell_background.xml

<bitmap
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@drawable/common_cell_background_bitmap"
    android:tileMode="repeat"
    android:dither="true">
</bitmap>

common_cell_background_highlight.xml

common_cell_background_highlight.xml

<bitmap
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@drawable/common_cell_background_bitmap_highlight"
    android:tileMode="repeat"
    android:dither="true">
</bitmap>

位图也完全相同。亮点是只是一点点轻，没有其他区别。这两个位图PNG文件。

Bitmaps are also exactly the same. Highlight is just a little bit lighter and there is no other differences. Both bitmaps are PNG files.

现在我设置

convertView.setBackgroundResource(R.drawable.list_item_background);

和这里的问题。我common_cell_background不重复，它是捉襟见肘。但是，当我谈谈我的名单背景变为细胞common_cell_background_highlight和猜测什么什么，令人惊奇？一切都很好，它的重复像它应该的。我不知道哪里出了问题，为什么我的背景不重复，而亮点呢。有什么想法？

and here is the problem. My common_cell_background doesn't repeat, it's stretched. But what is suprising when I touch on cell of my list background changes to common_cell_background_highlight and guess what? Everything is fine, it's repeated like it should be. I have no idea where is the problem, why my background doesn't repeat while highlight does. Any thoughts?

推荐答案

这是错误，它是固定在ICS，看到这样的回答：的 http://stackoverflow.com/a/7615120/1037294

This is the bug, it was fixed in ICS, see this answer: http://stackoverflow.com/a/7615120/1037294

下面是一种变通方法： http://stackoverflow.com/a/9500334/1037294

Here is a workaround: http://stackoverflow.com/a/9500334/1037294

请注意，该解决方法仅适用于 BitmapDrawable ，其他类型的可绘像 StateListDrawable 你会需要做额外的工作。这里是我用什么：

Note, that the workaround is only applicable for BitmapDrawable, for other types of drawables like StateListDrawable you'll need to do extra work. Here is what I use:

public static void fixBackgrndTileMode(View view, TileMode tileModeX, TileMode tileModeY) {
    if (view != null) {
        Drawable bg = view.getBackground();

        if (bg instanceof BitmapDrawable) {
            BitmapDrawable bmp = (BitmapDrawable) bg;
            bmp.mutate(); // make sure that we aren't sharing state anymore
            bmp.setTileModeXY(tileModeX, tileModeY);
        }
        else if (bg instanceof StateListDrawable) {
            StateListDrawable stateDrwbl = (StateListDrawable) bg;
            stateDrwbl.mutate(); // make sure that we aren't sharing state anymore

            ConstantState constantState = stateDrwbl.getConstantState();
            if (constantState instanceof DrawableContainerState) {
                DrawableContainerState drwblContainerState = (DrawableContainerState)constantState;
                final Drawable[] drawables = drwblContainerState.getChildren();
                for (Drawable drwbl : drawables) {
                    if (drwbl instanceof BitmapDrawable)
                        ((BitmapDrawable)drwbl).setTileModeXY(tileModeX, tileModeY);
                }
            }
        }
    }
}