I am writing an app for a WIMMOne watch: no orientation changes, a small simple screen, and Android version 7.
I got my first Android APP running, but based on a book, it had a fragment. But fragments added complications I do not want to deal with.
My second app has a similar structure: list of items then select an item to see or update details. So I am trying to just read a cursor, and create an array then call "setListAdapter(lstAdapter);".
I started with:
getLoaderManager().initLoader(0, null, this);
Got this error:
The method initLoader(int, Bundle, LoaderManager.LoaderCallbacks) in the type LoaderManager is not applicable for the arguments (int, null, PhoneListActivity)
So I tried their suggestion:
getLoaderManager().initLoader(0, null, (android.app.LoaderManager.LoaderCallbacks<D>) this);
Got this error:
The method initLoader(int, Bundle, LoaderManager.LoaderCallbacks) from the type LoaderManager refers to the missing type D
So I tried this:
getLoaderManager().initLoader(0, null, (android.app.LoaderManager.LoaderCallbacks) this);
and got this error:
Type safety: Unchecked invocation initLoader(int, null, LoaderManager.LoaderCallbacks) of the generic method initLoader(int, Bundle, LoaderManager.LoaderCallbacks) of type LoaderManager
Several postings said to use this for version below 11
getSupportLoaderManager().initLoader(0, null, this);
but that gives me this error:
The method getSupportLoaderManager() is undefined for the type PhoneListActivity
I have also seen not to use "getLoaderManager: in an activity.
So what am I doing wrong?
Many thanks, Clark
Below is what I currently have:
package com.wimmone.phonenos;
import android.view.Menu;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.ListActivity;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnDismissListener;
import android.database.Cursor;
import android.net.Uri;
import android.app.Application;
import android.content.Intent;
import android.database.Cursor;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import android.os.Environment;
import com.wimm.framework.app.Dialog;
public class PhoneListActivity extends ListActivity
implements
LoaderCallbacks<Cursor>
{
private SimpleCursorAdapter mAdapter;
List strRecId = new ArrayList();
private ListAdapter lstAdapter;
String strPhoneGroup = "";
String strPhoneName = "";
String strPhoneHome = "";
String strPhoneCell = "";
String strPhoneWork = "";
private Button btn_Add;
List strRecord = new ArrayList(3);
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.phone_list_activity);
String[] strItems = new String[] {PhoneProvider.COLUMN_PHONE_NAME};
int[] iCnt = new int[] { R.id.text1 };
mAdapter = new SimpleCursorAdapter(this, R.layout.phone_row,
null, strItems, iCnt, 0);
Log.d("PHONENOS***", "X onCrt: x02 START");
setListAdapter(mAdapter);
//getLoaderManager().initLoader(0, null, this);
//getLoaderManager().initLoader(0, null, this);
getSupportLoaderManager().initLoader(0, null, this);
//-----------------------------------------------
// define add button
Button btnAdd = (Button) findViewById(R.id.btn_Add);
btnAdd.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Log.d("PHONENOS***", "S create view btnAddEvent:");
}
} );
//-----------------------------------------------
// define Exit button
Button btnExit = (Button) findViewById(R.id.btn_Exit);
btnExit.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Log.d("PHONENOS***", "S create view btnEXIT:");
//Toast.makeText(this, "Good bye",
//Toast.LENGTH_SHORT).show();
// Application.onTerminate();
finish();
}
} );
//-----------------------------------------------
// define EXPORT button
Button btnExport . . .
}
//===============================================================
// DATA BASE ROUTINES TO LOAD FROM CURSOR
@Override
public Loader<Cursor> onCreateLoader(int ignored, final Bundle args)
{
Log.d("EventLst","S LoadCSR");
return new CursorLoader(this, PhoneProvider.CONTENT_URI, null,
null, null, null);
// Log.d("PHONENOS***","X LoadCSR");
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor)
{
// Log.d("PHONENOS***","0 LoadFin");
int iRecNo = 0;
int RowNO = 0;
int iBuCnt = 0;
String strPath = "";
mAdapter.swapCursor(cursor);
strRecId.clear();
strRecord.clear();
strRecord.add(0, "mm-dd-yy: Event name");
cursor.moveToFirst();
Log.d("EventLst","1 LoadFin DO");
// Read from cursor and add to list
while (cursor.isAfterLast() == false)
{
iRecNo = iRecNo + 1;
// - Table has 4 columns, read them into string array: strC
String strC[] = { (cursor.getString(0)), (cursor.getString(1)),
(cursor.getString(2)), (cursor.getString(3)),
(cursor.getString(4)), (cursor.getString(5))
};
String strRowNo = (cursor.getString(0));
strPhoneGroup = (cursor.getString(1));
strPhoneName = (cursor.getString(2));
strPhoneHome = (cursor.getString(3));
strPhoneCell = (cursor.getString(4));
strPhoneWork = (cursor.getString(5));
Log.d("PHONENOS***","4 LoadCSR:" + "I:" + iRecNo + "=" + strRowNo + "N:" + strPhoneName);
// - Concatenate Group and name into one string, add to table
strRecord.add(iRecNo, strPhoneGroup + "/" + strPhoneName);
// - save record number for each event in strRecId
// - Records are sorted by date, so we need to save RowId to pass
// to edit screen
strRecId.add((cursor.getString(0)));
iBuCnt = iBuCnt + 1;
cursor.moveToNext();
} // --------------------end of while loop
//cursor.close();
lstAdapter = new ArrayAdapter<String>(this,
R.layout.phone_row, R.id.text1, strRecord);
// * Call to SetListAdapter()informs ListFragment how to fill ListView
// * here use ArrayAdapter
setListAdapter(lstAdapter);
// Log.d("EventLst","8 LoadCSR:" + "ALLDONE");
}
@Override
public void onLoaderReset(Loader<Cursor> loader)
// This is called when the last Cursor provided to onLoadFinished() above
// is about to be closed
{
// Log.d("EventLst","x LoadRst");
// INITRUN REMOVE BELOW
mAdapter.swapCursor(null);
}
}
Since no one answered, I re-did my program and got it working. I really needed to use "extends LauncherActivity" (for the WIMMOne). Since I am dealing with a small database on a smart watch, the loader isn't really needed anyway, so I just dropped the use of the loader and used the cursor directly. It actually seems faster.