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ниже мой код я следую этой ссылке how to compare values with database values и настраиваю свой код, я просто хочу отображать только имя этого имени в базе данных, которое пользователь вставляет в базу данных, но показывает мою ошибку в вспомогательном классе в getAllApps метод метод GetString (INT) в типе курсора не применяется для аргументов (String)Как сравнить значения вставки вставки базы данных с другими значениями
import android.database.sqlite.SQLiteOpenHelper;
public class DatabaseHandler extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "contactsManager";
// Contacts table name
private static final String TABLE_CONTACTS = "contacts";
// Contacts Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_NAME = "name";
//private static final String KEY_PH_NO = "phone_number";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
// String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "("+
KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT,"+ KEY_PH_NO + " TEXT" + ")";
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "("+
KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT" + " UNIQUE " + ")";
db.execSQL(CREATE_CONTACTS_TABLE);
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS);
// Create tables again
onCreate(db);
}
/**
* All CRUD(Create, Read, Update, Delete) Operations
*/
// Adding new contact
void addContact(Contact contact) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, contact.getName()); // Contact Name
// values.put(KEY_PH_NO, contact.getPhoneNumber()); // Contact Phone
// Inserting Row
db.insert(TABLE_CONTACTS, null, values);
db.close(); // Closing database connection
}
// Getting single contact
Contact getContact(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_ID,
KEY_NAME }, KEY_ID + "=?",
new String[] { String.valueOf(id) }, null, null, null,
null);
if (cursor != null)
cursor.moveToFirst();
Contact contact = new Contact(Integer.parseInt(cursor.getString(0)),
cursor.getString(1));
// return contact
return contact;
}
// Getting All Contacts
public List<Contact> getAllContacts() {
List<Contact> contactList = new ArrayList<Contact>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_CONTACTS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Contact contact = new Contact();
contact.setID(Integer.parseInt(cursor.getString(0)));
contact.setName(cursor.getString(1));
//contact.setPhoneNumber(cursor.getString(2));
// Adding contact to list
contactList.add(contact);
} while (cursor.moveToNext());
}
// return contact list
return contactList;
}
// Updating single contact
public int updateContact(Contact contact) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, contact.getName());
// values.put(KEY_PH_NO, contact.getPhoneNumber());
// updating row
return db.update(TABLE_CONTACTS, values, KEY_ID + " = ?",
new String[] { String.valueOf(contact.getID()) });
}
// Deleting single contact
public void deleteContact(Contact contact) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_CONTACTS, KEY_ID + " = ?",
new String[] { String.valueOf(contact.getID()) });
db.close();
}
public int deleteContact() {
try {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete(TABLE_CONTACTS, null, null);
} catch (Exception e) {
e.printStackTrace();
}
return 0;
}
// Getting contacts Count
public int getContactsCount() {
String countQuery = "SELECT * FROM " + TABLE_CONTACTS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
cursor.close();
// return count
return cursor.getCount();
}
public ArrayList<String> getAllApps() {
String selectQuery = "SELECT * FROM table";
ArrayList<String> apps = new ArrayList<String>();
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
apps.add(cursor.getString(KEY_NAME));
} while (cursor.moveToNext());
}
// return list
return apps;
}
}
И Моя деятельность Класс
public class PlayStoreApps extends Activity implements
OnItemClickListener {
/* whether or not to include system apps */
private static final boolean INCLUDE_SYSTEM_APPS = false;
DatabaseHandler db;
private ListView mAppsList;
private AppListAdapter mAdapter;
private List<App> mApps;
String APKFilePath = "mnt/sdcard/foldername/";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.games);
db = new DatabaseHandler(this);
Button AddMore = (Button) findViewById(R.id.AddMore);
AddMore.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
// Intent intent = new Intent(FunActivity.this,
// SdcardAPkMgr.class);
// startActivity(intent);
}
});
mAppsList = (ListView) findViewById(R.id.appslist);
mAppsList.setOnItemClickListener(this);
mApps = loadInstalledApps(INCLUDE_SYSTEM_APPS);
mAdapter = new AppListAdapter(getApplicationContext());
mAdapter.setListItems(mApps);
mAppsList.setAdapter(mAdapter);
new LoadIconsTask().execute(mApps.toArray(new App[] {}));
}
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
final App app = (App) parent.getItemAtPosition(position);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
String msg = app.getTitle()
+ "\n\n"
+ "Version "
+ app.getVersionName()
+ " ("
+ app.getVersionCode()
+ ")"
+ (app.getDescription() != null ? ("\n\n" + app
.getDescription()) : "");
builder.setMessage(msg)
.setCancelable(true)
.setTitle(app.getTitle())
.setIcon(mAdapter.getIcons().get(app.getPackageName()))
.setPositiveButton("Launch",
new DialogInterface.OnClickListener() {
public void
onClick(DialogInterface dialog, int id) {
// start the app by
invoking its launch intent
Intent i =
getPackageManager()
.getLaunchIntentForPackage(
app.getPackageName());
try {
if (i != null) {
startActivity(i);
} else {
i = new
Intent(app.getPackageName());
startActivity(i);
}
} catch
(ActivityNotFoundException err) {
Toast.makeText(PlayStoreApps.this,
"Error launching app",
Toast.LENGTH_SHORT).show();
}
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void
onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
private List<App> loadInstalledApps(boolean includeSysApps) {
List<App> apps = new ArrayList<App>();
// the package manager contains the information about all installed apps
PackageManager packageManager = getPackageManager();
List<PackageInfo> packs = packageManager.getInstalledPackages(0); //
PackageManager.GET_META_DATA
for (int i = 0; i < packs.size(); i++) {
PackageInfo p = packs.get(i);
ApplicationInfo applicationInfo = p.applicationInfo;
String name = packageManager.getApplicationLabel(applicationInfo)
.toString();
List arraylist = db.getAllApps();
if (arraylist.contains(p.packageName))
{
App app = new App();
app.setTitle(p.applicationInfo.loadLabel(packageManager)
.toString());
app.setPackageName(p.packageName);
app.setVersionName(p.versionName);
app.setVersionCode(p.versionCode);
CharSequence description = p.applicationInfo
.loadDescription(packageManager);
app.setDescription(description != null ?
description.toString()
: "");
apps.add(app);
// }
}
}
return apps;
}
/**
* An asynchronous task to load the icons of the installed applications.
*/
private class LoadIconsTask extends AsyncTask<App, Void, Void> {
@Override
protected Void doInBackground(App... apps) {
Map<String, Drawable> icons = new HashMap<String, Drawable>();
PackageManager manager = getApplicationContext()
.getPackageManager();
for (App app : apps) {
String pkgName = app.getPackageName();
Drawable ico = null;
try {
Intent i =
manager.getLaunchIntentForPackage(pkgName);
if (i != null) {
ico = manager.getActivityIcon(i);
}
} catch (NameNotFoundException e) {
Log.e("ERROR", "Unable to find icon for package '"
+ pkgName + "': " +
e.getMessage());
}
icons.put(app.getPackageName(), ico);
}
mAdapter.setIcons(icons);
return null;
}
@Override
protected void onPostExecute(Void result) {
mAdapter.notifyDataSetChanged();
}
}
}
я просто хочу, чтобы отобразить только то будет приложения namme в виде списка, которые присутствуют в базе данных –