Question

我有一个扩展到SQLiteOpenhelper的功能性DBhelper类，该类成功创建并填充了我的数据库。但是，当我尝试使用复选框值填充数据库时，我的应用程序崩溃了。我相信我的代码片段controller.insert_checkbox（checked）出了点问题，因为当我注释掉它时，我的代码运行并在屏幕上显示吐司。这是我的代码；

公共类LocationCategoryChkbxNew扩展了AppCompatActivity {

Button button2;
CheckBox chkbox15;

int checked = 0;
ResturantsDbHelper controller;

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

    controller = new ResturantsDbHelper(this);
    button2 = (Button)findViewById(R.id.button2);
    getSupportActionBar().setTitle("Your Foodometer:  Hungry ..");

    chkbox15=(CheckBox)findViewById(R.id.checkBox15);
    chkbox15.setOnCheckedChangeListener(new OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if(isChecked){
                checked = 1;
                }else {
                checked = 0;
            }
        }
    });
    button2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            controller.insert_checkbox(checked);
            Toast.makeText(getApplicationContext(), "Saved '"+ checked + "' in DB", Toast.LENGTH_SHORT).show();

            Intent myIntent = new Intent(LocationCategoryChkbxNew.this,
                               ResturantCategoryChkboxNew.class);
                       startActivity(myIntent);
        }
    });

}

这是我的DBHelper类

公共类ResturantsDbHelper扩展了SQLiteOpenHelper { 私有静态最终字符串TAG =“ DatabaseHelper”;

// FIRST DB - Name of the resturant database file. if you change the DB Schema you must increment the database version
private static final String DATABASE_NAME1 = "Resturants.db";
//Resturant Database version
private static final int DATABASE_VERSION1 = 1;

//import LocationCategoryChkbx class
//private LocationCategoryChkbx;

public ResturantsDbHelper(Context context){
    super(context, DATABASE_NAME1,null, DATABASE_VERSION1);
}


@Override
public void onCreate(SQLiteDatabase db) {
    String SQL_CREATE_RESTURANTS_TABLE = "CREATE TABLE " + ResturantEntry.TABLE_NAME + "("
            + ResturantEntry._ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
            + ResturantEntry.COLUMN_NAME + " TEXT NOT NULL,"
            + ResturantEntry.COLUMN_TYPE + " TEXT NOT NULL,"
            + ResturantEntry.COLUMN_ADDRESS + " TEXT NOT NULL,"
            + ResturantEntry.COLUMN_LOCATION + " TEXT NOT NULL,"
            + ResturantEntry.COLUMN_GPSCOORDINATES + " INTEGER NOT NULL,"
            + ResturantEntry.COLUMN_TELEPHONE + " INTEGER NOT NULL,"
            + ResturantEntry.COLUMN_OPENINGHOURS + " INTEGER NOT NULL,"
            + ResturantEntry.COLUMN_CLOSINGHOURS + " INTEGER NOT NULL,"
           + ResturantEntry.COLUMN_CHECKBOX + " TEXT);";

    db.execSQL(SQL_CREATE_RESTURANTS_TABLE);


}

@Override
public void onUpgrade(SQLiteDatabase db, int i, int i1) {
    db.execSQL(String.format("DROP IF TABLE EXISTS %s", TABLE_NAME));
    onCreate(db);
       }

///我们创建了一种向数据库添加数据的方法，我们将其称为“ Insert_data” // public boolean insert_data（String s，String trim，String item，String trim1，String s1，String trim2，String s2，String trim3）{ public void insert_data（字符串mResturantName，字符串mAddress，字符串mRestTypeSpinner，字符串mLocationSpinner，字符串mGPS_coordinates，字符串mTelephone，字符串mOpeningHour，字符串mClosingHour）{ SQLiteDatabase db = this.getWritableDatabase（）; ContentValues contentValues =新的ContentValues（）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_NAME，mResturantName）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_TYPE，mAddress）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_ADDRESS，mRestTypeSpinner）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_LOCATION，mLocationSpinner）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_GPSCOORDINATES，mGPS_coordinates）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_TELEPHONE，mTelephone）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_OPENINGHOURS，mOpeningHour）; contentValues.put（ResturantContract.ResturantEntry.COLUMN_CLOSINGHOURS，mClosingHour）;

this.getWritableDatabase().insertOrThrow(ResturantContract.ResturantEntry.TABLE_NAME,"",contentValues);

}

public Cursor getResturantList(){

    SQLiteDatabase database=this.getWritableDatabase();
    Cursor resturantdata;
    resturantdata = database.rawQuery("SELECT * FROM " + TABLE_NAME,null);

    return resturantdata;


}


public void insert_checkbox(int checked) {
    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues contentValues = new ContentValues();
    contentValues.put(ResturantContract.ResturantEntry.COLUMN_CHECKBOX, checked );

    this.getWritableDatabase().insertOrThrow(ResturantContract.ResturantEntry.TABLE_NAME,"",contentValues);


}

}

我将不胜感激，我已经为此奋斗了2天

我已成功将文本传递到SQLite数据库中，但是当我尝试将选定的复选框值传递给SQLite数据库时，我的应用程序崩溃

0 个答案: