我用适配器类创建了列表视图，在列表项中，我给出了三个按钮。我还需要更改该按钮和其他按钮的背景图像。我有 5 个列表项，每个项都有自己的按钮。
现在，当我单击第一个、第二个到第五个列表项的按钮时，最后一个图像的背景只会发生变化。如果我单击相应的按钮取决于逻辑，每个列表项的按钮的背景图像都应该改变。它只发生在最后一个列表项..
如果有人知道如何做到这一点，请帮助我..
代码是：
public class MainActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
init();
}
private void init() {
LayoutInflater inflater1 = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater1.inflate(R.layout.datelabel, null);
setListAdapter(new EventListAdapter(this));
ListView listView = getListView();
listView.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "tapped on position " + position, Toast.LENGTH_SHORT).show();
return false;
}
});
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id)
{
((EventListAdapter)getListAdapter()).toggle(position);
}
private class EventListAdapter extends BaseAdapter {
private static final int VISIBLE = 0;
private static final int GONE = 8;
private TextView textViewForDateHeader;
private TextView textViewTitle;
private TextView textViewDialogue;
private TextView textViewHeader;
private ImageButton buttonForCheckMark;
private ImageButton buttonForDelete;
private View buttonForRemainder;
public EventListAdapter(Context context)
{
mContext = context;
}
public int getCount() {
return mTitles.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View myView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
myView = inflater.inflate(R.layout.activity_main, null);
textViewTitle = (TextView) myView.findViewById(R.id.textViewTitle);
textViewTitle.setText(mTitles[position]);
textViewDialogue = (TextView) myView.findViewById(R.id.textViewDialog);
textViewDialogue.setText(mDialogue[position]);
textViewDialogue.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 View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "tapped on remainder", Toast.LENGTH_SHORT).show();
}
});
buttonForCheckMark.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "tapped on checkMark", Toast.LENGTH_SHORT).show();
buttonForCheckMark.setBackgroundResource(R.drawable.ic_launcher);
buttonForDelete.setBackgroundResource(R.drawable.ic_navigation_cancel);
buttonForCheckMark.setClickable(false);
buttonForDelete.setClickable(true);
}
});
buttonForDelete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "tapped on delete", Toast.LENGTH_SHORT).show();
buttonForCheckMark.setBackgroundResource(R.drawable.ic_navigation_accept);
buttonForCheckMark.setClickable(true);
buttonForDelete.setBackgroundResource(R.drawable.ic_drawer);
buttonForDelete.setClickable(false);
}
});
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 ImageButton[] mButtons = {
//
// "R.drawable.remainder",
//
// };
private String[] mHeader =
{
"12 Jan, 2013",
"13 Feb, 2013",
"31 Mar, 2013",
"15 Aug, 2013",
"7 Sep, 2013"
};
/**
* 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
};
}
}