Hello everyone and thanks in advance!
I have a listview that displays a list of name from the sqlite database. What I want to know is how can I make it so that when I click on an Item in the list, it takes me to a new activity which displays the rest of the columns in the Sqlite Table?
This is the method I used to bind the listview with the cursor:
public void displayListView() {
Cursor cursor = dataSource.findAll();
String[] columns = new String[]{
DBHelper.CHARACTERATTRIBUTES_NAME,
DBHelper.CHARACTERATTRIBUTES_NICKNAME,
DBHelper.CHARACTERATTRIBUTES_NOTES};
int[] to = new int[]{
R.id.name,
R.id.nickname,
R.id.notes};
SimpleCursorAdapter dataAdapter = new SimpleCursorAdapter(this, R.layout.character_info, cursor, columns, to, 0);
ListView listView = (ListView) findViewById(R.id.list);
listView.setAdapter(dataAdapter);
listView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
Related
i have a list view filled with data coming from database, i want when i click on an item to
disappear, i used --list.remove(position)-- but i have an error add cast to list.
HERE the list view :
private void populateListViewFromDB() {
Cursor cursor = db.getAllRecords();
startManagingCursor(cursor);
String[] databaseColumnNames = new String[] { DBAdapter.col_Region };
int[] toViewIDs = new int[] { android.R.id.text1, android.R.id.text2 };
SimpleCursorAdapter myCursordapter = new SimpleCursorAdapter(this,
android.R.layout.simple_expandable_list_item_1, cursor,
databaseColumnNames, toViewIDs, FLAG_REGISTER_CONTENT_OBSERVER);
final ListView list = (ListView) findViewById(android.R.id.list);
list.setAdapter(myCursordapter);
HERE my code when i want to delete an item :
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(final AdapterView<?> arg0, View arg1,
final int position, long arg3) {
list.remove(position);
adapter.notifyDataSetChanged();}
There is no ListView.remove() method. You should remove correspondent item from the data model and then refresh your adapter.
In your OnItemClickListener listener get the bound data item:
Object itemObj = adapter.getItem(position);
Then, delete this item from your DB.
Then get new instance of your cursor and update your cursor adapter:
if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.GINGERBREAD){
adapter.swapCursor(newCurosr);
} else {
adapter.changeCursor(newCursor);
}
Then, notify your list view about data changes:
adapter.notifyDataSetChanged();
My ListView currently is able to display only one column data. I want it to display two column data.
Here is the code for my ListView:
public class ProjectExplorer extends ListActivity {
private projectdatabase database;
protected Cursor cursor;
protected ListAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
database = new projectdatabase(ProjectExplorer.this);
getinfo();
}
private void getinfo() {
database.open();
cursor = database.getDataforDisplay();
adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, cursor, new String[] {"project_name"}, new int[] { android.R.id.text1 }, 0);
setListAdapter(adapter);
}
#Override
public void onListItemClick(ListView parent, View view, int position, long id) {
super.onListItemClick(parent, view, position, id);
Cursor c = ((SimpleCursorAdapter)parent.getAdapter()).getCursor();
c.moveToPosition(position);
// get project name here
String str_projectname= c.getString(c.getColumnIndex("project_name"));
Toast.makeText(this, str_projectname, Toast.LENGTH_LONG).show();
}
Here is the method in database class which return the cursor:
public Cursor getDataforDisplay () {
String[] columns = new String[] {KEY_ROWID, PROJECT_NAME, PROJECT_FINISH_DATE, PROJECT_DIFFICULTY, PROJECT_STATUS};
Cursor c = projectDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
projectDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
c.moveToFirst();
return c;
}
I also want to display KEY_ROWID which is defined as _id
You can use android.R.layout.simple_list_item_2 specifying column no.2 from table from where data can be retrieved and specifies location with help of it can be displayed on Activity - android.R.id.text2
adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, cursor, new String[] {"project_name","column_no2"}, new int[] { android.R.id.text1, andriod.R.id.text2 }, 0);
You can also create your on custom Adapter specifying your own Listview and creating it from scratch and customized everything.
The best way to achieve this at least in my opinion is to create custom Adapter for your ListView in that case you can set your own design how single listview element should look like . Just populate some arrays using your Cursor and set them to your custom adapter.
I've got a functioning search interface on my app. Now I'm trying to make each search result list item clickable and display in a new activity. I've got them clickable, but I can't figure out how to pass the ListAdapter values (records) into the onItemClick method.
Here's my code so far:
private void showResults(String query) {
Cursor cursor = DBHelper.searchDB(query);
startManagingCursor(cursor);
String[] searchFrom = new String[] { DBAdapter.KEY_MAKE,
DBAdapter.KEY_YEAR, DBAdapter.KEY_MAKE,
DBAdapter.KEY_MODEL };
int[] displayHere = new int[] { R.id.rDateTV, R.id.rYearTV,
R.id.rMakeTV, R.id.rModelTV };
final SimpleCursorAdapter records = new SimpleCursorAdapter(this,
R.layout.record_2, cursor, searchFrom, displayHere);
setListAdapter(records);
DBHelper.close();
// --- Click on list item ---
ListView clickList = getListView();
clickList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//--- here's the problem: how do I pass the ListAdapter values into onItemClick. the below doesn't like .getText()
String sYear = (view.findViewById(R.id.rYearTV)).getText().toString();
String sMake = (view.findViewById(R.id.rMakeTV)).getText().toString();
String sModel = (view.findViewById(R.id.rModelTV)).getText().toString();
// -- then pass these strings to an intent to launch a new activity
}
});
// --- END click on list item ----
}
Any ideas? I'm a rookie here, so if you could show me the code, that would be AWSOME!
In OnItemClickListener.onItemClick call parent.getItemAtPosition(position). That method returns cursor which is set to the given position. Then get your data from that cursor. Don't close cursor inside OnItemClickListener.onItemClick.
for example:
ListView clickList = getListView();
clickList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Cursor c = (Cursor)parent.getItemAtPosition(position)
String sMake = c.getString(c.getColumnIndexOrThrow(DBAdapter.KEY_MAKE));//get data from cursor
...
}
});
I am using database in my application,in that i have fetched data from database,but i dont know how to display it in the textview.
Here is my code:
super.onCreate(savedInstanceState);
setContentView(R.layout.report);
db.open();
Cursor c = db.getAllTitles();
startManagingCursor(c);
String[] from = new String[] { db.KEY_INCOME };
int[] to = new int[] { R.id.textView1 };
SimpleCursorAdapter notes =
new SimpleCursorAdapter(this, R.layout.report, c, from, to);
Here the notes have the database value.But don't know how to proceed how to display it in listview.
do like this
String[] titles= new String[] {c.TITLE };
int[] view = new int[] { R.id.textview };
SimpleCursorAdapter mAdapter = new SimpleCursorAdapter(this, R.layout.list_example_entry, c, titles, view );
listview.setAdapter(notes);
You need to find your listview and set your adapter. (Assuming you are not using a ListActivity)
ListView list = (ListView) this.findViewById(R.id.yourlistview);
list.setAdapter(notes);
If you are using a ListActivity (or ListFragment), it's even simpler as the framework assumes you are using a certain id and you can just set the adapter like so:
setListAdapter(notes);
if you want to set set Tesxt on list item click you can do iy like
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
Cursor c = (Cursor) arg0.getAdapter().getItem(arg2);
tv.setTextt(c.getString(1));
}
I want to be able to fetch a row from a list view and populate textViews in a different activity. I want to be able to do this onclick of an item with the list view..
public class CBFilter extends Activity {
ListView RecipeNames;
Cursor cursor;
SimpleCursorAdapter adapter;
CBDataBaseHelper data;
SQLiteDatabase data2;
TextView RecipeText;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
RecipeNames = (ListView) findViewById(R.id.List1);
RecipeNames.setTextFilterEnabled(true);
RecipeText = (TextView) findViewById(R.id.recipeText);
adapter = new SimpleCursorAdapter (this, 0, cursor, null, null);
data = new CBDataBaseHelper(this);
data.open();
cursor = data.query();
startManagingCursor(cursor);
String[] from = {CBDataBaseHelper.KEY_NAME};
int[] to = { R.id.recipeText};
adapter = new SimpleCursorAdapter(this, R.layout.row, cursor, from, to);
RecipeNames.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
public void CreateNew(View view){
Intent myIntent = new Intent(this, CBCreate.class);
startActivity(myIntent);
}
}
How can i convert this code in order to achieve the required functionality.. thanks Stefan
try like this
public void onListItemClick(ListView parent, View v, int position, long id) {
String string = from[position]); // this depends on your Adapter ...
Intent i = new Intent(CheckData.this,ShowData.class);
i.putExtra("SELECTED", string);
startActivity(i);
i got it from this link , it will be use full for you :
Use of SQLite