我已经花了一天多的时间试图弄清楚这一点。我相当肯定我的注意力被布局中的某些东西偷走了。
我正在使用的适配器:
public class AudioAdapter extends ArrayAdapter<MusicContent>
{
private Context context;
private ImageView albumArt;
private TextView songName;
private TextView artistName;
private TextView albumName;
private TextView genre;
private TextView duration;
private CheckBox checkbox;
private List<MusicContent> content = new ArrayList<MusicContent>();
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View row = convertView;
if (row == null)
{
// ROW INFLATION
LayoutInflater inflater = (LayoutInflater) this.getContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.testing_cell, parent, false);
}
// Get item
MusicContent item = getItem(position);
RelativeLayout root = (RelativeLayout) row.findViewById(R.id.list_cell_layout);
// perform a series of checks to maintain customizability
albumArt = (ImageView) row.findViewById(R.id.list_cell_image);
if (albumArt != null)
{
if (item.hasAlbumArt())
albumArt.setImageBitmap(item.getAlbumArt());
else
albumArt.setImageDrawable(context.getResources().getDrawable(
R.drawable.ic_music_album));
albumArt.setClickable(false);
albumArt.setFocusable(false);
}
LinearLayout checkLL = (LinearLayout) row.findViewById(R.id.list_cell_music_info);
if (checkLL != null)
{
// display some song info
songName = (TextView) checkLL.findViewById(R.id.list_cell_title);
if (songName != null)
{
songName.setText(item.getDisplayName());
songName.setVisibility(View.VISIBLE);
}
checkLL = (LinearLayout) row.findViewById(R.id.list_cell_artist_info);
if (checkLL != null)
{
// display artist info too
artistName = (TextView) checkLL.findViewById(R.id.list_cell_artist_name);
if (artistName != null)
artistName.setText(item.getArtist());
albumName = (TextView) checkLL.findViewById(R.id.list_cell_album);
if (albumName != null)
albumName.setText(item.getAlbum());
duration = (TextView) checkLL.findViewById(R.id.list_cell_duration);
if (duration != null)
duration.setText(item.getDurationString());
genre = (TextView) checkLL.findViewById(R.id.list_cell_genre);
if (genre != null)
genre.setText(item.getGenre());
}
FrameLayout checkFL = (FrameLayout) row.findViewById(R.id.endoflineinfo);
// checkLL = (LinearLayout) row.findViewById(R.id.endoflineinfo);
if (checkFL != null)
{
checkbox = (CheckBox) checkFL.findViewById(R.id.in_playlist);
if (checkbox != null)
checkbox.setChecked(!item.getPlaylist().isEmpty());
checkbox.setFocusable(false);
checkbox.setClickable(false);
}
}
root.setDescendantFocusability(RelativeLayout.FOCUS_BLOCK_DESCENDANTS);
return row;
}
我的 XML 布局:
<RelativeLayout
android:id="@+id/list_cell_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@+id/list_cell_menu_button"
android:clickable="true"
android:descendantFocusability="blocksDescendants"
android:focusable="true"
android:focusableInTouchMode="true"
android:orientation="horizontal"
android:paddingBottom="@dimen/playlistItemPadding"
android:paddingTop="@dimen/playlistItemPadding" >
>
<ImageView
android:id="@+id/list_cell_image"
android:layout_width="@dimen/playlistItemSize"
android:layout_height="@dimen/playlistItemSize"
android:layout_centerVertical="true"
android:layout_marginLeft="@dimen/playlistMargin"
android:layout_marginRight="@dimen/playlistMargin"
android:clickable="false"
android:focusable="false"
android:scaleType="centerCrop"
android:tag="@string/image_type_browsing_list_item" />
<ImageView
android:id="@+id/list_cell_overlay"
android:layout_width="@dimen/playlistItemSize"
android:layout_height="@dimen/playlistItemSize"
android:layout_marginLeft="@dimen/playlistMargin"
android:layout_marginRight="@dimen/playlistMargin"
android:clickable="false"
android:focusable="false"
android:padding="8.0dip"
android:src="@drawable/ic_mc_play_overlay"
android:visibility="gone" />
<FrameLayout
android:id="@+id/endoflineinfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginLeft="@dimen/playlistMargin"
android:layout_marginRight="@dimen/playlistMargin"
android:clickable="false"
android:focusable="false" >
<ImageView
android:id="@+id/list_cell_item_locked"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:src="@drawable/ic_lock"
android:visibility="invisible" />
<CheckBox
android:id="@+id/in_playlist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:button="@drawable/btn_check"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"
android:visibility="invisible" />
</FrameLayout>
<LinearLayout
android:id="@+id/list_cell_music_info"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="@id/endoflineinfo"
android:layout_toRightOf="@id/list_cell_image"
android:clickable="false"
android:focusable="false"
android:orientation="vertical" >
<TextView
android:id="@+id/list_cell_title"
style="@style/Text.Listview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:clickable="false"
android:ellipsize="marquee"
android:focusable="false"
android:marqueeRepeatLimit="marquee_forever" />
<LinearLayout
android:id="@+id/list_cell_artist_info"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginRight="@dimen/playlistMargin"
android:clickable="false"
android:focusable="false"
android:orientation="horizontal" >
<TextView
android:id="@+id/list_cell_artist_name"
style="@style/Text.Listview.Small"
android:layout_width="0.0sp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_weight="0.5"
android:clickable="false"
android:ellipsize="marquee"
android:focusable="false"
android:marqueeRepeatLimit="marquee_forever" />
<TextView
android:id="@+id/list_cell_album"
style="@style/Text.Listview.Small"
android:layout_width="0.0sp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_weight="0.5"
android:clickable="false"
android:ellipsize="marquee"
android:focusable="false"
android:marqueeRepeatLimit="marquee_forever" />
<TextView
android:id="@+id/list_cell_genre"
style="@style/Text.Listview.Small"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="0.0"
android:clickable="false"
android:focusable="false"
android:gravity="right"
android:visibility="gone" />
<TextView
android:id="@+id/list_cell_duration"
style="@style/Text.Listview.Small"
android:layout_width="60.0sp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="0.0"
android:clickable="false"
android:focusable="false"
android:gravity="right" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
<ImageView
android:id="@+id/list_cell_menu_button"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="@drawable/button_background_square"
android:clickable="true"
android:descendantFocusability="blocksDescendants"
android:focusable="true"
android:focusableInTouchMode="true"
android:padding="19.0dip"
android:scaleType="fitCenter"
android:src="@drawable/ic_menu_source_config"
android:visibility="gone" />
设置 onItemClick
public void onCreate(Bundle blahblah)
{
setContentView(R.layout.fragment_list);
contentListView = (ListView) findViewById(R.id.frag_item_browser_list);
contentListView.setItemsCanFocus(true);
contentListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
contentListView.setDescendantFocusability(ListView.FOCUS_BLOCK_DESCENDANTS);
contentListView.setOnItemClickListener(new ListView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Log.d("SHARK", "click on " + contentAdapter.getItem(arg2));
}
});
contentListView.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Log.d("SHARK", "Long click on " + contentAdapter.getItem(arg2));
return true;
}
});
contentListView.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Log.d("SHARK", "something = " + arg1 + "\t" + arg0.getAdapter().getItem(arg2));
// Log.d("SHARK", "onClick happened ? "+arg1.callOnClick());
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
Log.d("SHARK", "nothing");
}
});
contentListView.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
Log.d("SHARK", "touching = " + v);
return false;
}
});
contentListView.setAdapter(contentAdapter);
contentListView.postInvalidate();
contentAdapter.notifyDataSetChanged();
}
onTouch 总是返回 ListView。OnSelectChange 正确返回 RelativeLayouts。OnItemClick 和 OnLongItemClick 根本不会触发。
我尝试过使用一个非常基本的 ArrayAdapter,当数据以简单的 toString() 形式出现在列表中时,单击就可以了。所以我相当确定要么是自定义适配器代码占用了 onClick -这有点怀疑* - 要么是 XML 可能在后台做一些时髦的事情..
请帮忙。