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POAndroid - Populate Listview Using Preloaded Database
 

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  1. POAndroid - Populate Listview Using Preloaded Database
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    <p>I would like to populate the listview using a preloaded database that I have created using SQLite Database browser. However, I keep getting force close. For the DatabaseHelper class, I followed the tutorial exactly on <a href="http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/" rel="nofollow">http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/</a></p> <p>Here is my code for displaying the listView:</p> <pre><code>public class POITab extends ListActivity { private SQLiteDatabase newDb; protected Cursor cursor; protected ListAdapter adapter; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); openDatabase(); } private void openDatabase() { POIHelper dbHelper = new POIHelper(this.getApplicationContext()); newDb = dbHelper.getWritableDatabase(); cursor = newDb.rawQuery("SELECT _id, Name FROM POI", null); adapter = new SimpleCursorAdapter(this, R.layout.listitem, cursor, new String[] {"Name"}, new int[] {R.id.name}); setListAdapter(adapter); } @Override public void onListItemClick(ListView parent, View view, int position, long id) { Toast.makeText(getApplicationContext(), ((TextView) view).getText(), Toast.LENGTH_SHORT).show(); } </code></pre> <p>Update: I am not sure but I guess the problem lies with the line </p> <pre><code>cursor = newDb.rawQuery("SELECT _id, Name FROM POI", null); </code></pre> <p>this is the code for my databaseHelper class:</p> <pre><code>public class POIHelper extends SQLiteOpenHelper { private static String DB_PATH = "/data/data/com.test.mysgapp/databases/"; private static String DB_NAME = "MySgAppdb"; private SQLiteDatabase myDatabase; private final Context myContext; public POIHelper(Context context) { super(context, DB_NAME, null, 1); this.myContext = context; } public void createDatabase() throws IOException { boolean dbExist = checkDatabase(); if(dbExist) { } else { this.getReadableDatabase(); try { copyDatabase(); } catch (IOException e) { throw new Error("Error copying database"); } } } private boolean checkDatabase() { SQLiteDatabase checkDb = null; try { String myPath = DB_PATH + DB_NAME; checkDb = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY); } catch (SQLiteException e) { } if(checkDb != null) { checkDb.close(); } return checkDb != null ? true : false; } private void copyDatabase() throws IOException{ InputStream input = myContext.getAssets().open(DB_NAME); String outFileName = DB_PATH + DB_NAME; OutputStream output = new FileOutputStream(outFileName); byte[] buffer = new byte[1024]; int length; while ((length = input.read(buffer))&gt;0) { output.write(buffer, 0, length); } output.flush(); output.close(); input.close(); } public void openDatabase() throws IOException { String path = DB_PATH + DB_NAME; myDatabase = SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY); } @Override public synchronized void close() { if (myDatabase != null) myDatabase.close(); super.close(); } @Override public void onCreate(SQLiteDatabase db) { } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { } </code></pre> <p>}</p> <p>Error Log:</p> <blockquote> <p>01-10 16:11:52.332: ERROR/AndroidRuntime(1311): FATAL EXCEPTION: main 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.mysgapp/com.test.mysgapp.POITab}: android.database.sqlite.SQLiteException: no such table: Places: , while compiling: SELECT _id, Name FROM Places 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.ActivityThread.startActivityNow(ActivityThread.java:2503) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:127) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:339) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:651) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.widget.TabHost.setCurrentTab(TabHost.java:323) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:129) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:453) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.view.View.performClick(View.java:2408) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.view.View$PerformClick.run(View.java:8816) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.os.Handler.handleCallback(Handler.java:587) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.os.Handler.dispatchMessage(Handler.java:92) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.os.Looper.loop(Looper.java:123) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.ActivityThread.main(ActivityThread.java:4627) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at java.lang.reflect.Method.invokeNative(Native Method) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at java.lang.reflect.Method.invoke(Method.java:521) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at dalvik.system.NativeStart.main(Native Method) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): Caused by: android.database.sqlite.SQLiteException: no such table: Places: , while compiling: SELECT _id, Name FROM Places 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteCompiledSql.(SQLiteCompiledSql.java:64) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:80) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteQuery.(SQLiteQuery.java:46) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1345) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1315) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at com.test.mysgapp.POITab.openDb(POITab.java:42) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at com.test.mysgapp.POITab.onCreate(POITab.java:36) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 01-10 16:11:52.332: ERROR/AndroidRuntime(1311): ... 18 more 01-10 16:11:52.392: WARN/ActivityManager(41): Force finishing activity com.test.mysgapp/.MySgApp</p> </blockquote>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USWinona
    1. USWinona
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COSorry for the novice question, but how do I get the log?
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      1. POAndroid - Populate Listview Using Preloaded Database
      1. USWinona
    2. CO@nandeesh The log says "android.database.sqlite.SQLiteException: no such table: POI:, while compiling: SELECT _id, Name FROM POI
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    3. CO@nandeesh Edited. Please help me... Thanks!!
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      1. POAndroid - Populate Listview Using Preloaded Database
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