java - ActiveAndroid SQLite 异常 'No such table'

Question

我在使用 active-android 时遇到了问题。我试图获取用户位置、乘客数量和大致方向。我想使用 activeAndroid 将这些保存到名为“Splits”的表中的手机存储中。但是每当我调用 save() 方法时，我都会得到一长串错误。我尝试重新安装该应用程序，并在 list 中更改我的数据库名称，但这些解决方案均无效。请记住，我是编程新手，所以如果可能的话，表现得像我 5 岁一样。谢谢 :)

这是 LogCat 输出

11-03 23:27:51.094    2905-2905/dk.specialisering.splitcab E/SQLiteLog﹕ (1) no such table: Splits
11-03 23:27:51.115    2905-2905/dk.specialisering.splitcab E/SQLiteDatabase﹕ Error inserting passengers=1 Id=null startLong=9.92773733 direction=North startLat=57.0487396
    android.database.sqlite.SQLiteException: no such table: Splits (code 1): , while compiling: INSERT INTO Splits(passengers,Id,startLong,direction,startLat) VALUES (?,?,?,?,?)
            at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
            at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1118)
            at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:691)
            at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
            at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
            at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
            at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1589)
            at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1461)
            at com.activeandroid.Model.save(Model.java:153)
            at dk.specialisering.splitcab.MainActivity.save(MainActivity.java:127)
            at dk.specialisering.splitcab.MainActivity$1.onClick(MainActivity.java:37)
            at android.view.View.performClick(View.java:4475)
            at android.view.View$PerformClick.run(View.java:18786)
            at android.os.Handler.handleCallback(Handler.java:730)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5419)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
            at dalvik.system.NativeStart.main(Native Method)
11-03 23:27:51.175    2905-2905/dk.specialisering.splitcab E/SQLiteLog﹕ (1) no such table: Splits
11-03 23:27:51.175    2905-2905/dk.specialisering.splitcab E/SQLiteDatabase﹕ Error inserting passengers=1 Id=null startLong=9.92773733 direction=North startLat=57.0487396
    android.database.sqlite.SQLiteException: no such table: Splits (code 1): , while compiling: INSERT INTO Splits(passengers,Id,startLong,direction,startLat) VALUES (?,?,?,?,?)
            at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
            at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1118)
            at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:691)
            at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
            at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
            at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
            at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1589)
            at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1461)
            at com.activeandroid.Model.save(Model.java:153)
            at dk.specialisering.splitcab.MainActivity.save(MainActivity.java:127)
            at dk.specialisering.splitcab.MainActivity$1.onClick(MainActivity.java:37)
            at android.view.View.performClick(View.java:4475)
            at android.view.View$PerformClick.run(View.java:18786)
            at android.os.Handler.handleCallback(Handler.java:730)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5419)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
            at dalvik.system.NativeStart.main(Native Method)

这是我的表格模型类

@Table(name = "Splits")
public class Splits extends Model {
    @Column(name = "startLat")
    public double startLat;
    @Column(name = "startLong")
    public double startLong;
    @Column(name = "passengers")
    public int passengers;
    @Column(name = "direction")
    public String direction;


    public Splits()
    {
        super();
    }

    public Splits(double startLat, double startLong, int passengers, String direction)
    {
        this.startLat = startLat;
        this.startLong = startLong;
        this.passengers = passengers;
        this.direction = direction;
    }

}

我的 Activity

    package dk.specialisering.splitcab;

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.media.Image;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.Spinner;
import android.widget.TextView;

import com.activeandroid.ActiveAndroid;

import dk.specialiserng.model.Splits;


public class MainActivity extends Activity {

    TextView textLat;
    TextView textLong;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final ImageButton btn = (ImageButton)findViewById(R.id.imgBtn);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                save();
            }
        });
        ActiveAndroid.initialize(this);
        populateSpinners();
        initializeLocation();
    }
        private class myLocationListener implements LocationListener{
            @Override
            public void onLocationChanged(Location location) {

                if(location != null) {
                    double pLong = location.getLongitude();
                    double pLat = location.getLatitude();

                    textLat.setText(Double.toString(pLat));
                    textLong.setText((Double.toString(pLong)));
                }

            }

            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {

            }

            @Override
            public void onProviderEnabled(String provider) {

            }

            @Override
            public void onProviderDisabled(String provider) {

            }
        }


    public void populateSpinners()
    {
        Spinner passengerSpinner = (Spinner) findViewById(R.id.ddlPassengers);

        Spinner directionSpinner = (Spinner) findViewById(R.id.ddlDirection);
// Create an ArrayAdapter using the string array and a default spinner layout
        ArrayAdapter<CharSequence> passengerAdapter = ArrayAdapter.createFromResource(this,
                R.array.noOfPassengers, android.R.layout.simple_spinner_item);

        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
                R.array.splitDirection, android.R.layout.simple_spinner_item);
// Specify the layout to use when the list of choices appears
        passengerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner
        passengerSpinner.setAdapter(passengerAdapter);

        directionSpinner.setAdapter(adapter);


    }

    public void initializeLocation()
    {

        textLat = (TextView) findViewById(R.id.textLat);
        textLong = (TextView) findViewById(R.id.textLong);

        LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        LocationListener ll = new myLocationListener();
        Location lastLocation = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);

        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll);
        if (lastLocation != null)
        {
            textLat.setText(Double.toString(lastLocation.getLatitude()));
            textLong.setText(Double.toString(lastLocation.getLongitude()));
        }
    }

    public void save()
    {
        Spinner pasSpin = (Spinner)findViewById(R.id.ddlPassengers);
        Spinner dirSpin = (Spinner)findViewById(R.id.ddlDirection);
        double latitude = Double.parseDouble(textLat.getText().toString());
        double longitude = Double.parseDouble(textLong.getText().toString());
        int passengers = Integer.parseInt(pasSpin.getSelectedItem().toString());
        String direction = dirSpin.getSelectedItem().toString();

        Splits splits = new Splits(latitude, longitude, passengers, direction);

        splits.save();


    }

    }

我的布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="Your Position in latitude and longitude"
        android:id="@+id/textView"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:id="@+id/textLat"
        android:layout_below="@+id/textView"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/textView"
        android:layout_alignEnd="@+id/textView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:id="@+id/textLong"
        android:layout_below="@+id/textLat"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignRight="@+id/textLat"
        android:layout_alignEnd="@+id/textLat" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="Number of Splitters in your party"
        android:id="@+id/textView2"
        android:layout_below="@+id/textLong"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <Spinner
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/ddlPassengers"
        android:layout_below="@+id/textView2"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:spinnerMode="dropdown" />

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="The direction you will be going"
        android:id="@+id/textView3"
        android:layout_below="@+id/ddlPassengers"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Spinner
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/ddlDirection"
        android:layout_below="@+id/textView3"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:spinnerMode="dropdown" />

    <ImageButton
        android:layout_width="200dp"
        android:layout_height="90dp"
        android:scaleType="fitCenter"
        android:id="@+id/imgBtn"
        android:src="@drawable/gotitbtn"
        android:background="@android:color/transparent"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"

        />

</RelativeLayout>

我希望有人能提供帮助，我知道我发布了很多，但此时我变得绝望了。提前致谢

Answer 1

虽然晚了，希望对你有帮助。

来自 github 中 ActiveAndroid 的官方页面:

“这是因为 ActiveAndroid 仅在没有现有数据库文件时生成架构。为了在创建新模型后“重新生成”架构，最简单的方法方法是从模拟器中卸载应用程序并允许它完全重新安装。这是因为这会清除数据库文件并触发 ActiveAndroid 根据项目中的注释模型重新创建表。 "