这是调用文件：
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
dbActivities = new DBActivities(this);
dbActivities.open(); // Create or open the existing DB if already created
}
private final BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) {
smsCount++;
Log.d(LOG_TAG, "smsCount=" +smsCount);
long dbInsertReturn = dbActivities.insertIntoDB(smsCount);
}
}
};
这是执行实际数据库操作的文件：
public class DBActivities {
private static final String LOG_TAG = "SMSCounterActivity";
private static final String DATABASE_NAME = "sms_details_database";
private static final String DATABASE_TABLE = "sms_details_table";
private static final String KEY_DATE = "date";
private static final String KEY_SMS_CURRENT_COUNT = "sms_current_count";
private static final String CREATE_SMS_DETAILS_TABLE = "CREATE TABLE " + DATABASE_TABLE + "(" + KEY_DATE + " TEXT, " + KEY_SMS_CURRENT_COUNT + " INTEGER);";
private static final int DATABASE_VERSION = 1;
private final Context mContext;
private DatabaseHelper mDbHelper;
private SQLiteDatabase mDb;
public DBActivities(Context param_context) {
this.mContext = param_context;
}
// Database helper class for creating and updating database
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
Log.i(LOG_TAG, "Creating DataBase: " + CREATE_SMS_DETAILS_TABLE);
db.execSQL(CREATE_SMS_DETAILS_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(LOG_TAG, "Upgrading database from version " + oldVersion + " to " + newVersion);
}
}
// Create a new DB. If DB already exists, open it !
public DBActivities open() throws SQLException {
Log.d(LOG_TAG, "Trying to open DB now. Table query=" + CREATE_SMS_DETAILS_TABLE);
mDbHelper = new DatabaseHelper(mContext);
mDb = mDbHelper.getWritableDatabase();
return this;
}
public void close() {
mDbHelper.close();
}
// DB format: date | sms_current_count
// date = YYYY-MM-DD
public long insertIntoDB (int db_value_to_insert) {
ContentValues dbValues = new ContentValues();
dbValues.put(KEY_DATE, getCurrentDate());
dbValues.put(KEY_SMS_CURRENT_COUNT, db_value_to_insert);
return mDb.insert(DATABASE_TABLE, null, dbValues);
}
private String getCurrentDate() {
Calendar calendar = Calendar.getInstance();
String currentDate = calendar.get(Calendar.YEAR) + "-" + (calendar.get(Calendar.MONTH)+1) + "-" + calendar.get(Calendar.DAY_OF_MONTH);
Log.d(LOG_TAG, "currentDate=" +currentDate);
return currentDate;
}
}
这是 logcat 日志：
05-09 01:52:33.363: D/SMSCounterActivity(444): Trying to open DB now. Table query=CREATE TABLE sms_details_table(date TEXT, sms_current_count INTEGER);
05-09 01:54:30.472: D/SMSCounterActivity(444): smsCount=1
05-09 01:54:30.482: D/SMSCounterActivity(444): currentDate=2012-5-9
05-09 01:54:30.592: I/Database(444): sqlite returned: error code = 1, msg = table sms_details_table has no column named sms_current_count
05-09 01:54:30.612: E/Database(444): Error inserting sms_current_count=1 date=2012-5-9
05-09 01:54:30.612: E/Database(444): android.database.sqlite.SQLiteException: table sms_details_table has no column named sms_current_count: , while compiling: INSERT INTO sms_details_table(sms_current_count, date) VALUES(?, ?);
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:64)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:80)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:36)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1145)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1536)
05-09 01:54:30.612: E/Database(444): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1410)
05-09 01:54:30.612: E/Database(444): at com.android.main.DBActivities.insertIntoDB(DBActivities.java:66)
05-09 01:54:30.612: E/Database(444): at com.android.main.SMSCounterActivity$1.onReceive(SMSCounterActivity.java:52)
05-09 01:54:30.612: E/Database(444): at android.app.ActivityThread$PackageInfo$ReceiverDispatcher$Args.run(ActivityThread.java:892)
05-09 01:54:30.612: E/Database(444): at android.os.Handler.handleCallback(Handler.java:587)
05-09 01:54:30.612: E/Database(444): at android.os.Handler.dispatchMessage(Handler.java:92)
05-09 01:54:30.612: E/Database(444): at android.os.Looper.loop(Looper.java:123)
05-09 01:54:30.612: E/Database(444): at android.app.ActivityThread.main(ActivityThread.java:4627)
05-09 01:54:30.612: E/Database(444): at java.lang.reflect.Method.invokeNative(Native Method)
05-09 01:54:30.612: E/Database(444): at java.lang.reflect.Method.invoke(Method.java:521)
05-09 01:54:30.612: E/Database(444): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-09 01:54:30.612: E/Database(444): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-09 01:54:30.612: E/Database(444): at dalvik.system.NativeStart.main(Native Method)
我无法弄清楚数据库插入失败的原因。logcat显示建表查询正常。表中仍然缺少 sms_current_count 列。