hi i tried to populate a spinner from DB....
my code:
String MY_DATABASE_NAME = "testDB";
String MY_DATABASE_TABLE = "testDBrecords";
TextView resultsView;
Spinner spinner;
ArrayAdapter<String> adapterForSpinner;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
spinner = (Spinner) findViewById(R.id.spinner);
resultsView = (TextView) findViewById(R.id.textview);
SQLiteDatabase myDB = null;
myDB = this.openOrCreateDatabase(MY_DATABASE_NAME, 1, null);
myDB.execSQL("CREATE TABLE IF NOT EXISTS " + MY_DATABASE_TABLE + " (LastName VARCHAR, FirstName VARCHAR, Country VARCHAR, Age INT (3));");
myDB.execSQL("INSERT INTO " + MY_DATABASE_TABLE + " (LastName, FirstName, Country, Age) VALUES ('name1b', 'name1a', 'countrya', 34);");
myDB.execSQL("INSERT INTO " + MY_DATABASE_TABLE + " (LastName,FirstName, Country, Age) VALUES ('name2b, 'name2a, 'countryb', 27);");
Cursor c = myDB.query(MY_DATABASE_TABLE, null, null, null, null, null, null);
int firstnameColumnIndex = c.getColumnIndexOrThrow ("FirstName");
int ageColumnIndex = c.getColumnIndexOrThrow("Age");
adapterForSpinner = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item);
adapterForSpinner.setDropDownViewResource (android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapterForSpinner);
if (c.moveToFirst()) {
do {
adapterForSpinner.add(c.getString(firstnameColumnIndex) + " aged " + c.getShort(ageColumnIndex));
}
while (c.moveToNext());
if (myDB != null) {
myDB.close();
}
}
else {
resultsView.setText("DB EMPTY!!");
}
}
No error but while run force close....
logCat Error:
03-24 03:09:31.501: INFO/Database(546): sqlite returned: error code = 1, msg = near "name2a": syntax error
03-24 03:09:31.501: ERROR/Database(546): Failure 1 (near "name2a": syntax error) on 0x1ec430 when preparing 'INSERT INTO testDBrecords (LastName,FirstName, Country, Age) VALUES ('name2b, 'name2a, 'countryb', 27);'.
03-24 03:09:31.743: DEBUG/AndroidRuntime(546): Shutting down VM
03-24 03:09:31.743: WARN/dalvikvm(546): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): FATAL EXCEPTION: main
03-24 03:09:31.981: ERROR/AndroidRuntime(546): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.acarin.project/com.acarin.project.Rough}: android.database.sqlite.SQLiteException: near "name2a": syntax error: INSERT INTO testDBrecords (LastName,FirstName, Country, Age) VALUES ('name2b, 'name2a, 'countryb', 27);
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1622)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1638)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:928)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.os.Handler.dispatchMessage(Handler.java:99)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.os.Looper.loop(Looper.java:123)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.ActivityThread.main(ActivityThread.java:3647)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at java.lang.reflect.Method.invokeNative(Native Method)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at java.lang.reflect.Method.invoke(Method.java:507)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at dalvik.system.NativeStart.main(Native Method)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): Caused by: android.database.sqlite.SQLiteException: near "name2a": syntax error: INSERT INTO testDBrecords (LastName,FirstName, Country, Age) VALUES ('name2b, 'name2a, 'countryb', 27);
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.database.sqlite.SQLiteDatabase.native_execSQL(Native Method)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1743)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at com.acarin.project.Rough.onCreate(Rough.java:32)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1586)
03-24 03:09:31.981: ERROR/AndroidRuntime(546): ... 11 more
03-24 03:09:32.178: WARN/ActivityManager(66): Force finishing activity com.acarin.project/.Rough
03-24 03:09:32.767: WARN/ActivityManager(66): Activity pause timeout for HistoryRecord{406c9448 com.acarin.project/.Rough}
03-24 03:09:33.693: WARN/ActivityManager(66): Activity idle timeout for HistoryRecord{406c9448 com.acarin.project/.Rough}
03-24 03:09:37.055: DEBUG/dalvikvm(282): GC_EXPLICIT freed 19K, 55% free 2594K/5703K, external 716K/1038K, paused 15976ms
03-24 03:09:41.994: DEBUG/dalvikvm(299): GC_EXPLICIT freed 6K, 54% free 2536K/5511K, external 716K/1038K, paused 317ms
03-24 03:09:43.742: WARN/ActivityManager(66): Activity destroy timeout for HistoryRecord{406c9448 com.acarin.project/.Rough}
Any help would be appreciated.
myDB.execSQL("INSERT INTO " + MY_DATABASE_TABLE + " (LastName,FirstName, Country, Age) VALUES ('name2b, 'name2a, 'countryb', 27);");
You're missing two quotes! Change it to:
myDB.execSQL("INSERT INTO " + MY_DATABASE_TABLE + " (LastName,FirstName, Country, Age) VALUES ('name2b', 'name2a', 'countryb', 27);");
来源：https://stackoverflow.com/questions/5401971/populate-a-spinner-from-database