- 我已经实现了具有具有背景图像更改效果的按钮的列表视图。但是，当我点击任何列表项时，该效果不再存在并刷新。
- 我检查过，当我点击任何列表项时，getView() 正在调用...
- 如何避免这种情况？？？
- 如果有人知道，请提出任何解决方案...
- 谢谢..
- 代码是：
公共类 EventListAdapter 扩展 BaseAdapter { private static final int VISIBLE = 0;
private static final int GONE = 8;
private List<Events> dateForEventList;
private String eventsRetrived;
private String[] events;
boolean clickStatus = false;
private int status = 0;
public EventListAdapter(Context context)
{
mContext = context;
}
/**
* The number of items in the list is determined by the number of announcements
* in our array.
*
* @see android.widget.ListAdapter#getCount()
*/
public int getCount() {
DatabaseManager db = new DatabaseManager(mContext);
dateForEventList = db.getAllData1(CalendarAdapter.dateOfEventSingle);
for (Events l : dateForEventList) {
eventsRetrived = l.getEventData();
}
events = eventsRetrived.split(",");
return events.length;
}
/**
* Since the data comes from an array, just returning
* the index is sufficent to get at the data. If we
* were using a more complex data structure, we
* would return whatever object represents one
* row in the list.
*
* @see android.widget.ListAdapter#getItem(int)
*/
public Object getItem(int position) {
return position;
}
/**
* Use the array index as a unique id.
* @see android.widget.ListAdapter#getItemId(int)
*/
public long getItemId(int position) {
return position;
}
public View getView(final int position, View myView, ViewGroup parent) {
if(myView == null) {
LayoutInflater inflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
myView = inflater.inflate(R.layout.activity_event_list, null);
}
TextView textViewTitle;
TextView textViewDialogue;
final ImageButton buttonForCheckMark;
final ImageButton buttonForDelete;
final ImageButton buttonForRemainder;
//Events event = new Events("11/2/2013","today, there is function in Shivajinagar");
// event.setDate("11 Jan,2013");
// String event1 = event.getDate();
//
// textViewForDateHeader = (TextView)myView.findViewById(R.id.textViewHeadingDate);
// textViewForDateHeader.setText(event1);
DatabaseManager db = new DatabaseManager(mContext);
dateForEventList = db.getAllData1(CalendarAdapter.dateOfEventSingle);
for (Events l : dateForEventList) {
eventsRetrived = l.getEventData();
}
events = eventsRetrived.split(",");
// TextView tv = (TextView)myView.findViewById(R.id.grid_item_text);
// tv.setText(events[position]);
textViewTitle = (TextView) myView.findViewById(R.id.textViewTitle);
textViewTitle.setText(events[position]);
textViewDialogue = (TextView) myView.findViewById(R.id.textViewDialog);
textViewDialogue.setText(events[position]);
textViewDialogue.setVisibility(mExpanded[position] ? VISIBLE : GONE);
// textViewHeader = (TextView)myView.findViewById(R.id.textViewHeader);
// textViewHeader.setText(mHeader[position]);
// textViewHeader.setVisibility(mExpanded[position] ? VISIBLE : GONE);
buttonForCheckMark = (ImageButton) myView.findViewById(R.id.buttonForCheckMark);
buttonForCheckMark.setVisibility(mExpanded[position] ? VISIBLE : GONE);
buttonForDelete = (ImageButton) myView.findViewById(R.id.buttonForDelete);
buttonForDelete.setVisibility(mExpanded[position] ? VISIBLE : GONE);
buttonForRemainder = (ImageButton) myView.findViewById(R.id.buttonForRemainder);
buttonForRemainder.setVisibility(mExpanded[position] ? VISIBLE : GONE);
buttonForRemainder.setOnClickListener(new OnClickListener() {
@SuppressWarnings("static-access")
@SuppressLint("SimpleDateFormat")
public void onClick(View v) {
try {
Toast.makeText(mContext, "remainder saved..", Toast.LENGTH_SHORT).show();
} catch (Exception ex) {
Toast.makeText(mContext, "Exception in Remainder " + ex.toString(), Toast.LENGTH_SHORT).show();
}
//
}
});
buttonForCheckMark.setOnClickListener(new OnClickListener() {
public void onClick(View v){
Toast.makeText(mContext, "tapped on checkMark", Toast.LENGTH_SHORT).show();
Toast.makeText(mContext, " current Position tapped : " + position, Toast.LENGTH_SHORT).show();
if(position == 0) {
buttonForCheckMark.setBackgroundResource(R.drawable.ic_launcher);
buttonForDelete.setBackgroundResource(R.drawable.ic_navigation_cancel);
buttonForCheckMark.setClickable(false);
buttonForDelete.setClickable(true);
}
// change the status to 1 so the at the second clic , the else will be executed
// else {
// button.setBackgroundResource(R.drawable.ic_navigation_accept);
// status =0;//change the status to 0 so the at the second clic , the if will be executed
// }
// buttonForCheckMark.setBackgroundResource(R.drawable.ic_drawer);
}
});
buttonForDelete.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Toast.makeText(mContext, "tapped on delete", Toast.LENGTH_SHORT).show();
if(position == 0) {
buttonForCheckMark.setBackgroundResource(R.drawable.ic_navigation_accept);
buttonForCheckMark.setClickable(true);
buttonForDelete.setBackgroundResource(R.drawable.ic_drawer);
buttonForDelete.setClickable(false);
// change the status to 1 so the at the second clic , the else will be executed
}
}
});
return myView;
}
public void toggle(int position) {
mExpanded[position] = !mExpanded[position];
notifyDataSetChanged();
}
/**
* Remember our context so we can use it when constructing views.
*/
private Context mContext;
/**
* Our data, part 1.
*/
private String[] mTitles =
{
"Event 1",
"Event 2",
"Event 3",
"Event 4",
"Event 5"
};
/**
* Our data, part 2.
*/
private String[] mDialogue =
{
"wuszuogwfuieffufuhuysugdueljwihadghgxdhgyhghsdgyigwuweyuqaGDHGYHGHGAdhgyhigxgxgeuyehu.",
"dgusduugyujguegytgujgdugwjhiuyg7wtqUYGYYgyijyiufufjguhgdugfhgfhgfgfhgfhghfghifgyi,dgwsdtgyfytfiuwt,",
"rtygygghtudggyjhgujtugdhhguyuaUUUUDJYUIDHUJHDIIDUJDHDUJHDIDIOUYhujtdugyhdgg",
"gjhuwjsgudggdudgjqhasdgdhgjdhushjaguhguwegagsdgygydgfgdcgycg",
"fhdgyhdfhfgdyhhwsddgyuduuufguugwugdfgugdgooduiuduiuduuduiuiuidudiiwdiou"
};
/**
* Our data, part 3.
*/
private boolean[] mExpanded =
{
false,
false,
false,
false,
false,
false,
false,
false
};
// private Integer[] mThumbIds = {
// R.drawable.remainder, R.drawable.remainder,
// R.drawable.remainder, R.drawable.remainder,
// R.drawable.remainder
//
// };
}