我使用列表和数组适配器将字符串放入列表视图中。现在我想删除选定的项目。我尝试过以下代码，但效果不佳。我怎样才能解决这个问题？
这是我的代码：
TextView t1;
String[] temp;
mylist = (ListView) findViewById(R.id.list);
final List<String> wordList = Arrays.asList(temp);
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_multiple_choice,
wordList);
delete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
int index = mylist.getSelectedItemPosition();
int count=mylist.getCount();
for(int i=0;i<=count;i++) {
if (index >= 0) {
t1.setText(wordList.remove(index));
}
adapter.notifyDataSetChanged();
}
}
});
这是更多源代码：
public class Edit extends Activity {
SharedPreferences sharedpref;
ListView mylist;
String[] temp;
String name,
ArrayAdapter<String> adapter;
Button save, delete, cancel;
TextView t1;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.edit);
mylist = (ListView) findViewById(R.id.list);
cancel = (Button) findViewById(R.id.cancel1);
save = (Button) findViewById(R.id.save1);
delete = (Button) findViewById(R.id.delete1);
t1=(TextView)findViewById(R.id.textView1);
sharedpref = PreferenceManager
.getDefaultSharedPreferences(getApplicationContext());
name = sharedpref.getString("Visible_selected", "");
String delimiter = "\n";
temp = name.split(delimiter);
mylist.setItemsCanFocus(true);
mylist.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
final List<String> wordList = Arrays.asList(temp);
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_multiple_choice, wordList);
mylist.setAdapter(adapter);
save.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
});
delete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
mylist.setOnItemClickListener(new OnItemClickListener() {
private String getSelectedItemOfList;
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
getSelectedItemOfList = sortedList.get(arg2).getStr_movieParam();
}
});
cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
}
}
这是我的更新代码：
enter code here
删除.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
adapter.remove(getSelectedItemOfList);
adapter.notifyDataSetChanged();
}
});
mylist.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
SparseBooleanArray checkedPositions =mylist.getCheckedItemPositions();
if(checkedPositions.get(arg2)==true){
getSelectedItemOfList = (String) mylist.getItemAtPosition(arg2);
t1.append(getSelectedItemOfList.toString()+"\n");}
}
});
