Adapter和AdapterView之间的关系

 /**
* Notifies the attached observers that the underlying data has been changed
* and any View reflecting the data set should refresh itself.
*/
public void notifyDataSetChanged() {
mDataSetObservable.notifyChanged();
}
AdapterView

public interface OnItemLongClickListener {
/**
* Callback method to be invoked when an item in this view has been
* clicked and held.
*... ...
*/
boolean onItemLongClick(AdapterView parent, View view, int position, long id);
}

public interface OnItemClickListener {

    /**
* Callback method to be invoked when an item in this AdapterView has
* been clicked.
*... ...
*/
void onItemClick(AdapterView parent, View view, int position, long id);
}

/**
* Returns the adapter currently associated with this widget.
*... ...
*/
public abstract T getAdapter();
/**
* Sets the adapter that provides the data and the views to represent the data
* in this widget.
*... ...
*/
public abstract void setAdapter(T adapter);

 public boolean performItemClick(View view, int position, long id) {
if (mOnItemClickListener != null) {
playSoundEffect(SoundEffectConstants.CLICK);
if (view != null) {
view.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
}
mOnItemClickListener.onItemClick(this, view, position, id);
return true;
}
return false;
}