ResolverActivity.java 文件源码

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    final int checkedPos = mListView.getCheckedItemPosition();
    final boolean hasValidSelection = checkedPos != ListView.INVALID_POSITION;
    if (mAlwaysUseOption && (!hasValidSelection || mLastSelected != checkedPos)) {
        mAlwaysButton.setEnabled(hasValidSelection);
        mOnceButton.setEnabled(hasValidSelection);
        if (hasValidSelection) {
            mListView.smoothScrollToPosition(checkedPos);
        }
        mLastSelected = checkedPos;
    } else {
        startSelected(position, false);
    }
}