Sqlite 辅助类：
public class SQLite_helper extends SQLiteOpenHelper {
public static final String MYDATABASE_TABLE = "Stripclubs_table_test";
public static final String KEY_ID = "_id";
public static final String KEY_CONTENT1 = "Name";
public static final String KEY_CONTENT2 = "Town";
public static final String KEY_CONTENT3 = "State";
public static final String KEY_CONTENT4 = "Phone";
public static final String KEY_CONTENT5 = "Website";
public static final String KEY_CONTENT6 = "Description";
public static final String KEY_CONTENT7 = "Stars";
public static final String KEY_CONTENT8 = "Latitude";
public static final String KEY_CONTENT9 = "Longitude";
public static final String KEY_CONTENT10 = "zipcode";
public static final String KEY_CONTENT11 = "id";
private static final String SCRIPT_CREATE_DATABASE =
"create table " + MYDATABASE_TABLE + " ("
+ KEY_ID + " integer primary key autoincrement, "
+ KEY_CONTENT1 + " text, "
+ KEY_CONTENT2 + " text, "
+ KEY_CONTENT3 + " text, "
+ KEY_CONTENT4 + " text, "
+ KEY_CONTENT5 + " text, "
+ KEY_CONTENT6 + " text, "
+ KEY_CONTENT7 + " text, "
+ KEY_CONTENT8 + " text, "
+ KEY_CONTENT9 + " text, "
+ KEY_CONTENT10 + " text, "
+ KEY_CONTENT11 + " text)";
public SQLite_helper(Context context, String name, CursorFactory factory,
int version) {
super(context, name, factory, version);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL(SCRIPT_CREATE_DATABASE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
}
主要活动：
public class MainActivity extends Activity {
public static final String MYDATABASE_NAMEE = "MY_DATABASE_TEST";
public static final int MYDATABASE_VERSION = 3;
public static final String MYDATABASE_TABLE = "Stripclubs_table_test";
public static final String KEY_ID = "_id";
public static final String KEY_CONTENT1 = "Name";
public static final String KEY_CONTENT2 = "Town";
public static final String KEY_CONTENT3 = "State";
public static final String KEY_CONTENT4 = "Phone";
public static final String KEY_CONTENT5 = "Website";
public static final String KEY_CONTENT6 = "Description";
public static final String KEY_CONTENT7 = "Stars";
public static final String KEY_CONTENT8 = "Latitude";
public static final String KEY_CONTENT9 = "Longitude";
public static final String KEY_CONTENT10 = "zipcode";
public static final String KEY_CONTENT11 = "id";
private SQLite_helper sqLiteHelper;
private SQLiteDatabase sqLiteDatabase;
Cursor cursor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sqLiteHelper = new SQLite_helper(this, MYDATABASE_NAMEE, null, MYDATABASE_VERSION);
sqLiteDatabase = sqLiteHelper.getWritableDatabase();
if (!sqLiteDatabase.isOpen()) {
sqLiteDatabase = getApplicationContext().openOrCreateDatabase("/data/data/com.example.sqlitetest/databases/MY_DATABASE_TEST.db", SQLiteDatabase.OPEN_READWRITE, null);
}
cursor = sqLiteDatabase.query(MYDATABASE_TABLE, null,null, null, null, null, null);
System.out.println("MAX_PLACES "+cursor.getCount());
for(int i=0;i<5;i++){
ContentValues cv = new ContentValues();
cv.put(KEY_CONTENT1, "Salu");//Star Dust Lounge
cv.put(KEY_CONTENT2, "place");//District Heights
cv.put(KEY_CONTENT3, "fgfjhghj");
cv.put(KEY_CONTENT4, "47567");//301-5344-159
cv.put(KEY_CONTENT5, "ghj");//http://testsitez.info/stripclubs/harley-riders-private-club/
cv.put(KEY_CONTENT6, "5xfdgh");//low key around the way spot. dancers will negotiate $$ for vip action.
cv.put(KEY_CONTENT7, "3");
cv.put(KEY_CONTENT8, "gh");//38.864
cv.put(KEY_CONTENT9, "fggh");//-76.9145
cv.put(KEY_CONTENT10, "gfh");
cv.put(KEY_CONTENT11, "hjghj");
sqLiteDatabase.insert(MYDATABASE_TABLE, null, cv);
cursor.requery();
List<String> lables_name = sqLiteHelper.getAllLabels("Name");
System.out.println(lables_name.size());
}
//new GetPlaces().execute("details");
}
}
主要活动和助手类如上所示。我的问题是，在插入第一行后，程序通过 throw 关闭IllegalStateException。这里有什么问题。
这是我的 logcat 输出
08-13 10:34:34.829: E/AndroidRuntime(5860): FATAL EXCEPTION: main
08-13 10:34:34.829: E/AndroidRuntime(5860): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sqlitetest/com.example.sqlitetest.MainActivity}: java.lang.IllegalStateException: database not open
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.os.Handler.dispatchMessage(Handler.java:99)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.os.Looper.loop(Looper.java:123)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.ActivityThread.main(ActivityThread.java:3683)
08-13 10:34:34.829: E/AndroidRuntime(5860): at java.lang.reflect.Method.invokeNative(Native Method)
08-13 10:34:34.829: E/AndroidRuntime(5860): at java.lang.reflect.Method.invoke(Method.java:507)
08-13 10:34:34.829: E/AndroidRuntime(5860): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-13 10:34:34.829: E/AndroidRuntime(5860): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-13 10:34:34.829: E/AndroidRuntime(5860): at dalvik.system.NativeStart.main(Native Method)
08-13 10:34:34.829: E/AndroidRuntime(5860): Caused by: java.lang.IllegalStateException: database not open
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1526)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1426)
08-13 10:34:34.829: E/AndroidRuntime(5860): at com.example.sqlitetest.MainActivity.onCreate(MainActivity.java:85)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-13 10:34:34.829: E/AndroidRuntime(5860): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
08-13 10:34:34.829: E/AndroidRuntime(5860): ... 11 more
com.example.sqlitetest.MainActivity.onCreate(MainActivity.java:85) 被扔到 sqLiteDatabase.insert(MYDATABASE_TABLE, null, cv); 在主要活动中。但是第一行正在插入。