Elessar Elessar - 14 days ago 5
Android Question

How to add EditText value to ListView using BaseAdapter by clicking Button

I have created three TextView in my custom ListView, and I want to add value in Arraylist so I made code and i can add item like where line 21. but I want add using Edittext and button. so I made function 'additem' in ListViewAdapter.
if click 'btndone' button in memberActivity, 'additem' will run. But nothing happens and nothing change.....please teach how to fix..

*memberActivity.java

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_member);

final ListView listview;
final ListViewAdapter adapter;
final ArrayList<String> items = new ArrayList<String>();

mylist = (ListView) findViewById(R.id.listview1);
final LinearLayout linewarLayout1 = (LinearLayout) findViewById(R.id.addmember);
final LinearLayout linewarLayout2 = (LinearLayout) findViewById(R.id.buttongroup);

// Create Adapter
adapter = new ListViewAdapter();

// Refer to list view and adapter
listview = (ListView) findViewById(R.id.listview1);
listview.setAdapter(adapter);

// add 1st item.
adapter.addItem("오정엽",
"201102087", "컴퓨터공학");
// add 2nd item.
adapter.addItem("임경원",
"201203074", "소프트웨어공학");
// add 3rd item.
adapter.addItem("심준식",
"201405938", "소프트웨어공학");


Button addButton = (Button) findViewById(R.id.add);
addButton.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
mylist.setVisibility(View.INVISIBLE);
linewarLayout2.setVisibility(View.INVISIBLE);
linewarLayout1.setVisibility(View.VISIBLE);
}
});

final EditText name = ((EditText) findViewById(R.id.etName));
final EditText ID = ((EditText) findViewById(R.id.etID));
final EditText Major = ((EditText) findViewById(R.id.etMajor));

Button btnDone = (Button) findViewById(R.id.btnDone);
btnDone.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {

TextView cnttxt = (TextView)findViewById(R.id.count);
cnttxt.setText(adapter.getCount());

adapter.addItem(name.getText().toString(), ID.getText().toString(), Major.getText().toString());
name.setText("");
ID.setText("");
Major.setText("");
mylist.setVisibility(View.VISIBLE);
linewarLayout2.setVisibility(View.VISIBLE);
linewarLayout1.setVisibility(View.INVISIBLE);
}
});


*ListViewItem.java

public void setname(String name) {
nameStr = name ;
}
public void setID(String ID) {
IDStr = ID ;
}
public void setmajor(String major) {
majorStr = major ;
}

public String getname() {
return this.nameStr ;
}
public String getID() {
return this.IDStr ;
}
public String getmajor() {
return this.majorStr ;
}


*ListViewAdapter.java

public class ListViewAdapter extends BaseAdapter {
private ArrayList<ListViewItem> listViewItemList = new ArrayList<ListViewItem>() ;

public ListViewAdapter() {

}
TextView nameTextView = (TextView) convertView.findViewById(R.id.list_name) ;
TextView IDTextView = (TextView) convertView.findViewById(R.id.list_ID) ;
TextView majorTextView = (TextView) convertView.findViewById(R.id.list_major) ;

ListViewItem listViewItem = listViewItemList.get(position);

nameTextView.setText(listViewItem.getname());
IDTextView.setText(listViewItem.getID());
majorTextView.setText(listViewItem.getmajor());

return convertView;
}

public void addItem(String name, String ID, String major) {
ListViewItem item = new ListViewItem();

item.setname(name);
item.setID(ID);
item.setmajor(major);

listViewItemList.add(item);
}


}

Answer

call 'notifyDatasetChanged()' after adding data. It will Work.