android - 导入android.os.CancellationSignal无法在Android上解析ORMLite

Question

编辑:

错误发生在 ORMLite 版本 4.48 中。我回滚到 4.45，错误不再发生。

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我已经按照网站上的说明使用适用于 Android 的 ORMLite 实现了一个数据库。但是，每当我尝试写入数据库时​​，都会出现异常:

10-24 15:15:04.600: E/AndroidRuntime(12057): FATAL EXCEPTION: IntentService[com.mypackage.instagram.UpdateInstagramPhotosService]
10-24 15:15:04.600: E/AndroidRuntime(12057): java.lang.ExceptionInInitializerError
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.android.AndroidDatabaseConnection.compileStatement(AndroidDatabaseConnection.java:146)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.table.TableUtils.doStatements(TableUtils.java:460)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.table.TableUtils.doCreateTable(TableUtils.java:443)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.table.TableUtils.createTable(TableUtils.java:220)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.table.TableUtils.createTable(TableUtils.java:53)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.mypackage.database.DatabaseHelper.onCreate(DatabaseHelper.java:33)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper.onCreate(OrmLiteSqliteOpenHelper.java:209)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.android.AndroidConnectionSource.getReadWriteConnection(AndroidConnectionSource.java:66)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.dao.BaseDaoImpl.create(BaseDaoImpl.java:306)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.mypackage.instagram.UpdateInstagramPhotosService.performUpdate(UpdateInstagramPhotosService.java:85)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.mypackage.PhotoUpdateService.onHandleIntent(PhotoUpdateService.java:27)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at android.os.Handler.dispatchMessage(Handler.java:99)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at android.os.Looper.loop(Looper.java:137)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at android.os.HandlerThread.run(HandlerThread.java:60)
10-24 15:15:04.600: E/AndroidRuntime(12057): Caused by: java.lang.ExceptionInInitializerError
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.android.AndroidCompiledStatement.<clinit>(AndroidCompiledStatement.java:33)
10-24 15:15:04.600: E/AndroidRuntime(12057):    ... 17 more
10-24 15:15:04.600: E/AndroidRuntime(12057): Caused by: java.lang.Error: Unresolved compilation problems: 
10-24 15:15:04.600: E/AndroidRuntime(12057):    The import android.os.CancellationSignal cannot be resolved
10-24 15:15:04.600: E/AndroidRuntime(12057):    CancellationSignal cannot be resolved to a type
10-24 15:15:04.600: E/AndroidRuntime(12057):    CancellationSignal cannot be resolved to a type
10-24 15:15:04.600: E/AndroidRuntime(12057):    CancellationSignal cannot be resolved to a type
10-24 15:15:04.600: E/AndroidRuntime(12057):    CancellationSignal cannot be resolved to a type
10-24 15:15:04.600: E/AndroidRuntime(12057):    CancellationSignal cannot be resolved to a type
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.android.compat.JellyBeanApiCompatibility.<init>(JellyBeanApiCompatibility.java:5)
10-24 15:15:04.600: E/AndroidRuntime(12057):    at com.j256.ormlite.android.compat.ApiCompatibilityUtils.<clinit>(ApiCompatibilityUtils.java:40)
10-24 15:15:04.600: E/AndroidRuntime(12057):    ... 18 more

这发生在 IntentService 子类中。这是该类的一些相关代码:

private DatabaseHelper databaseHelper;
static {
    OpenHelperManager.setOpenHelperClass(DatabaseHelper.class);
}

public DatabaseHelper getHelper() {
    if (databaseHelper == null) {
        databaseHelper = OpenHelperManager.getHelper(this, DatabaseHelper.class);
    }
    return databaseHelper;
}

@Override
public void onDestroy() {
    super.onDestroy();

    if (databaseHelper != null) {
        OpenHelperManager.releaseHelper();
        databaseHelper = null;
    }
}

我可以在我的代码中导入 android.os.CancellationSignal 就好了。

Answer 1

我也是这样，感谢帮助...回滚到 4.45 后，问题解决了。