Android select one row from a database error
<p>I am new to Android and trying to select a row from a database like this:</p>

<pre><code>public Cursor getEntry(int id){
    SQLiteDatabase db = this.getReadableDatabase();

    Cursor entry = db.query(TABLE_NAME, new String[]{
            "id", "title", "description", "image_path"
    }, "id" + "=?", new String[]{ String.valueOf(id) }, null, null, null, null);

    return entry;
}
</code></pre>

<p>and trying to output it like this:</p>

<pre><code>    DatabaseHelper db = new DatabaseHelper(this);
    TextView tv = new TextView(this);
    if (db.getEntry(1) != null){
        while (db.getEntry(1).moveToFirst()){
            tv.setText("" + db.getEntry(1).getString(1));
        }
    }
    setContentView(tv);
</code></pre>

<p>and the error:</p>

<pre><code>ERROR/AndroidRuntime(1850): FATAL EXCEPTION: main
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.untitled1/com.example.untitled1.DisplayMessageActivity}: android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 1
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
    at android.app.ActivityThread.access$600(ActivityThread.java:141)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:5039)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
    at dalvik.system.NativeStart.main(Native Method)
    Caused by: android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 1
    at android.database.AbstractCursor.checkPosition(AbstractCursor.java:424)
    at android.database.AbstractWindowedCursor.checkPosition(AbstractWindowedCursor.java:136)
    at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:50)
    at com.example.untitled1.DisplayMessageActivity.onCreate(DisplayMessageActivity.java:28)
    at android.app.Activity.performCreate(Activity.java:5104)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
    ... 11 more
</code></pre>

<p>What is the problem?</p>

<p>Thanks</p>
