按照以下说明进行操作this博客文章 我能够跟踪垂直列表适配器上的选定项目,但我无法通过按某个键来单击或长单击任何项目。
我创建了这个方法
public static boolean isConfirmButton(KeyEvent event){
switch (event.getKeyCode()){
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_BUTTON_A:
return true;
default:
return false;
}
}
拦截“确认”按钮,但是哪里是正确的监听位置KeyEvents
?如何区分点击和长按?
我通过添加常规和长按按钮来编辑帖子中的代码:
@Override
public void onAttachedToRecyclerView(final RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
mRecyclerView = recyclerView;
// Handle key up and key down and attempt to move selection
recyclerView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
RecyclerView.LayoutManager lm = recyclerView.getLayoutManager();
// Return false if scrolled to the bounds and allow focus to move off the list
if (event.getAction() == KeyEvent.ACTION_DOWN) {
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
return tryMoveSelection(lm, 1);
} else if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
return tryMoveSelection(lm, -1);
} else if(KeyEventUtils.isConfirmButton(event)){
View view = mRecyclerView.findViewHolderForAdapterPosition(mSelectedItem).itemView;
if((event.getFlags() & KeyEvent.FLAG_LONG_PRESS)==KeyEvent.FLAG_LONG_PRESS) {
view.performLongClick();
}
else{
view.performClick();
}
return true;
}
}
return false;
}
});
}
现在可以正常工作了,不知道这是否是最优雅的方式。
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