我正在使用 aCursorAdapter
来处理我的ListActivity
:
public class Mclass extends ListActivity{
...
TheAdapter mAdapter;
public static HashMap<Long, Boolean> shown = new HashMap<Long, Boolean>();
...
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Boolean tmp = shown.get(id);
if (tmp == null) { // if null we don't have this key in the hashmap so we added with the value true
shown.put(id, true);
} else {
shown.put(id, !tmp.booleanValue()); // if the value exists in the map then inverse it's value
}
mAdapter.notifyDataSetChanged();
}
}
CursorAdapter
和我的扩展和覆盖的适配器类bindView
:
@Override
public void bindView(View view, Context context, Cursor cursor) {
String listText= cursor
.getString(cursor
.getColumnIndexOrThrow(DataHandler.MY_TEXT));
long id = cursor.getLong(cursor.getColumnIndexOrThrow(DataHandler.ROW_ID));
if (Mclass.shown.get(id) != null) {
TextView m_text = (TextView) view
.findViewById(R.id.my_text);
if (m_text != null) {
m_text.setVisibility(Mclass.shown.get(id)? View.VISIBLE:
View.GONE);
if (m_text.isShown())
m_text.setText("STRING");
}
}
我的列表项布局在 xml 文件中定义list_item.xml
:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#DDDDDD"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="@+id/my_image"
android:layout_width="wrap_content"
android:layout_height="0dip"
android:layout_weight="1"
android:paddingRight="1dip"
android:paddingTop="1dip"
</LinearLayout>
/*
*I want to toggle this text view's visibility
*/
<TextView
android:id="@+id/my_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"//VISIBILITY defined here
android:paddingBottom="2dip"
android:paddingLeft="4dip"
android:paddingRight="4dip"
android:paddingTop="5dip" />
</LinearLayout>
如何TextView
在我的布局中切换 的可见性onListItemClick
?我试过了:
TextView mTextView = (TextView) v.findViewById(R.id.my_text);
mTextView.setVisibility(mTextView.isShown()? View.GONE: View.VISIBLE);
mAdapter.notifyDataSetChanged();
但它似乎是在随机选择要切换的列表项,无论我点击哪个。