首先，我不知道我的数据库是否正常工作，因为我最终在这里更改了我以前的代码（它也不起作用） 现在我使用 newboston 中的教程 for sqlite，但我仍然有一些错误它总是说不幸的是FC已经停止了。我不知道我的代码有什么问题，因为我没有对它进行编码错误。
public class DatabaseHelper {
public static final String KEY_ROWID = "_id";
public static final String KEY_NAME = "recipename";
public static final String KEY_INGRDNAME = "ingrdname";
public static final String MENU_ID = "_id";
public static final String RECIPE_NAME = "recipe";
private static final String MYDATABASE = "recipebook";
private static final int VERSION = 1;
private static final String RECIPE_TABLE = "recipe";
private static final String MENU_TABLE = "menu";
static final String viewrecipe ="viewrecipe";
private DbHelper ourHelper;
private final Context ourContext;
private SQLiteDatabase ourDatabase;
private static class DbHelper extends SQLiteOpenHelper{
public DbHelper(Context context) {
super(context, MYDATABASE, null, VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE "+RECIPE_TABLE+" ("+KEY_ROWID+ " INTEGER PRIMARY KEY AUTOINCREMENT , "+
KEY_NAME+ " TEXT, " + KEY_INGRDNAME+ "TEXT );");
db.execSQL("CREATE TABLE "+MENU_TABLE+" ("+MENU_ID+" INTEGER PRIMARY KEY, "+
RECIPE_NAME +" INTEGER NOT NULL ,FOREIGN KEY ("+RECIPE_NAME+") REFERENCES "+RECIPE_TABLE+" ("+KEY_ROWID+"));");
db.execSQL("CREATE VIEW "+viewrecipe+
" AS SELECT "+RECIPE_TABLE +"."+KEY_NAME+""+
" FROM "+MENU_TABLE+" JOIN "+RECIPE_TABLE+
" ON "+MENU_TABLE+"."+RECIPE_NAME+" ="+RECIPE_TABLE+"."+KEY_ROWID
);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS "+MENU_TABLE);
db.execSQL("DROP TABLE IF EXISTS "+RECIPE_TABLE);
db.execSQL("DROP VIEW IF EXISTS "+viewrecipe);
onCreate(db);
}
}
public DatabaseHelper (Context c){
ourContext =c;
}
public DatabaseHelper open(){
ourHelper = new DbHelper(ourContext);
ourDatabase = ourHelper.getReadableDatabase();
return this;
}
public void close(){
ourHelper.close();
}
public void InsertRecipe()
{
ContentValues values = new ContentValues();
values.put(KEY_NAME, "Beef tapa");
values.put(KEY_INGRDNAME, " 2 pounds beef round or chuck, sliced thinly against the grain , 1/2 cup lemon juice, 1/3 cup soy sauce , 2 tablespoons sugar, 1/4 teaspoon ground black pepper, 1 head garlic, minced, Canola or any cooking oil for frying " );
ourDatabase.insert(RECIPE_TABLE, null, values);
values.put(KEY_NAME, "Bulalo");
values.put(KEY_INGRDNAME, " 6 - 7 pounds Beef Shanks with Bone Marrow, 1 head Garlic, cut, 1 large Onion, cubed, 2 Carrots, roughly cut, 2 stalks Celery, roughly cut, 1 teaspoon Whole Peppercorns, 1 tablespoon Salt, Leeks (optional), 2 - 3 Potatoes, cubed, 2 Corn on the cob, cut in 1 1/2 inch, 2 stalks Pechay or Bok Choy, 1 gallon Water, or enough to cover meat" );
ourDatabase.insert(RECIPE_TABLE, null, values);
values.put(KEY_NAME, "Caldereta");
values.put(KEY_INGRDNAME, "2 pounds Beef, cut in 2 inch cubes, 1/2 head garlic, minced, 1/2 cup vinegar, 2 teaspoon salt, 2 pieces bay leaf (dahon ng laurel), enough water to cover the beef, 1/2 head garlic, minced, 1 medium onion, chopped, 1 small can tomato sauce, 6 small potatoes, quartered, 2-3 small Chili pepper, cut finely, 1 red bell pepper, cut in strips, 1/2 cup Green peas(optional), 1/2 cup Pickle Relish, 1 small can Liver Spread, 1/2 cup Olives, Salt and Pepper to taste, 2 teaspoon sugar, 2 tablespoons cooking oil, for sauteing, LIVER GRAVY INGREDIENTS (Optional), 1/2 pound beef liver, ground, 2 tablespoons vinegar, 2 tablespoons breadcrumbs, 1 cup beef broth, salt and pepper.");
ourDatabase.insert(RECIPE_TABLE, null, values);
values.put(KEY_NAME, "Kare kare");
values.put(KEY_INGRDNAME, "2 pounds Oxtail, cut in 1 thickness,1 pound beef tripe (tuwalya), pressure cooked, cut into 2 squares (optional), 1/2 pound string beans, sliced in 3 lengths, 2 pcs. eggplants, sliced in 3 wedges, 1 banana bud or heart(puso ng saging), sliced in strips(optional), 6 stalks Bok Choy(Pechay), leaves and stalk separated, cut in 2 lengths, 1/2 cup peanut butter, dissolved in 1 cup beef broth, 1/4 cup toasted rice, powdered, dissolved in 1/2 cup beef broth, 5 cups beef broth, 2 tablespoons achuete seeds, 1/4 cup cooking oil,3 cloves garlic, minced, 1 medium onion, chopped, 1 tablespoon salt,1 tablespoon sugar, 1/4 teaspoon pepper, Sauteed Shrimp Paste");
ourDatabase.insert(RECIPE_TABLE, null, values);
}
public String getIngredient(long l){
String[]columns = new String[]{KEY_ROWID,KEY_NAME,KEY_INGRDNAME};
Cursor c = ourDatabase.query(RECIPE_TABLE, columns, KEY_ROWID + "= " + l, null, null, null, null);
if (c != null){
c.moveToFirst();
String ingredient = c.getString(2);
return ingredient;
}
return null;
}
}
public class menucategory1a1 extends Activity {
TextView text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.beef1);
TextView text = (TextView)findViewById(R.id.beeftapaingredients);
String s = "1";
long l = Long.parseLong(s);
DatabaseHelper recipe = new DatabaseHelper(this);
recipe.open();
String ingrd = recipe.getIngredient(l);
recipe.close();
text.setText(ingrd);
Button page1 = (Button) findViewById(R.id.button1);
page1.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), menucategory1a1a.class);
startActivityForResult(myIntent, 0);
}
});
}
}
是我在数据库中输入/插入值的方式还是我的声明错误？