Question

我尝试运行＆＃34; getItem()＆＃34;方法

公共类PhoneDal扩展了SQLiteOpenHelper {

// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = Constants.DB_NAME;

private static final String BLOCKED_PHONES_TABLE = "BLOCKED_PHONES_TABLE";
private static final String COMMENTS_TABLE = "COMMENTS_TABLE";

public PhoneDal(Context context) {
    super(context, DATABASE_NAME, null, DATABASE_VERSION);
}

@Override
public void onCreate(SQLiteDatabase db) {
    // SQL statement to create book table

    String CREATE_BLOCKED_PHONES_TABLE = "CREATE TABLE "
            + BLOCKED_PHONES_TABLE + " ( "
            + KEY_ID+" INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_PHONE+" TEXT, "
            + KEY_IS_BLOCKED+" BIT )";

    db.execSQL(CREATE_BLOCKED_PHONES_TABLE);
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    if (newVersion > oldVersion) {
        Log.w("MyAppTag", "Updating database from version " + oldVersion
                + " to " + newVersion + " .Existing data will be lost.");
        // Drop older books table if existed
        db.execSQL("DROP TABLE IF EXISTS " + BLOCKED_PHONES_TABLE);

        // create fresh books table
        this.onCreate(db);
    }

}



private static final String KEY_ID = "id";
private static final String KEY_PHONE = "KEY_PHONE";
private static final String KEY_IS_BLOCKED = "KEY_IS_BLOCKED";

public Phone getItem(String phone) {
    Phone result = new Phone();

    Cursor cursor = this.getReadableDatabase().query(BLOCKED_PHONES_TABLE,
            new String[] { KEY_ID  }, ""+KEY_PHONE+" = ? AND "+KEY_IS_BLOCKED+" = ?",
            new String[] { phone, "1" }, null, null, null);

    // 3. if we got results get the first one
    if (cursor != null) {
        result.id = (cursor.getInt(1));
        result.phone = phone;
        result.isBlocked = false;
    }
    return result;
}

我得到了这个例外：

Process: com.example.stopcall.app, PID: 31146
android.database.sqlite.SQLiteException: no such column: KEY_PHONE (code 1): , while compiling: SELECT id FROM BLOCKED_PHONES_TABLE WHERE KEY_PHONE = ? AND KEY_IS_BLOCKED = ?
        at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
        at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1113)
        at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:690)
        at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
        at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
        at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
        at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
        at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1448)
        at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1295)
        at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1166)
        at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1334)
        at com.example.stopcall.app.dal.PhoneDal.getItem(PhoneDal.java:117)
        at com.example.stopcall.app.ItemDetailFragment$1.onClick(ItemDetailFragment.java:93)
        at android.view.View.performClick(View.java:4654)
        at android.view.View$PerformClick.run(View.java:19438)
        at android.os.Handler.handleCallback(Handler.java:733)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:146)
        at android.app.ActivityThread.main(ActivityThread.java:5602)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
        at dalvik.system.NativeStart.main(Native Method)

为什么我会看到：

public void setWriteAheadLoggingEnabled(boolean enabled) {
    throw new RuntimeException("Stub!");
}

public SQLiteDatabase getWritableDatabase() {
    throw new RuntimeException("Stub!");
}

public SQLiteDatabase getReadableDatabase() {
    throw new RuntimeException("Stub!");
}

代码每次都到这里

Answer 1

您正在查看android.jar文件的反编译版本，而不是在设备或模拟器上运行的实际Android代码。

关于实际问题，我的猜测是您更改了数据库架构而未更改架构版本（代码中为DATABASE_VERSION）。可以增加DATABASE_VERSION并实施onUpdate()，也可以卸载并重新安装您的应用以删除旧数据库。

SQLiteDatabase getWritableDatabase（）{throw new RuntimeException（“Stub！”）; }

1 个答案: