我正在制作医疗商店数据库应用程序...... 其中我想存储药品的名称,价格,公司,日期和说明......
我试图使用Item ...
存储所有数据我使用此代码保存数据...
TextView tv;
tv = (TextView) findViewById(R.id.title);
item.setName(tv.getText().toString());
tv = (TextView) findViewById(R.id.content);
item.setNotecontent(tv.getText().toString());
tv = (TextView) findViewById(R.id.editTextPrice);
item.setNotecontent(tv.getText().toString());
tv = (TextView) findViewById(R.id.editTextCompany);
item.setNotecontent(tv.getText().toString());
tv = (TextView) findViewById(R.id.editTextDat);
item.setNotecontent(tv.getText().toString());
此代码获取
item = (Item) getIntent().getSerializableExtra("item");
TextView t = (TextView) findViewById(R.id.title);
t.setText(item.getName());
t = (TextView) findViewById(R.id.content);
t.setText(item.getNotecontent());
t = (TextView) findViewById(R.id.company);
t.setText(item.getNotecontent());
t = (TextView) findViewById(R.id.price);
t.setText(item.getNotecontent());
t = (TextView) findViewById(R.id.date);
t.setText(item.getNotecontent());
但它只显示Name并忽略所有其他数据...... 因为我这是因为getName()和getNotecontent()... 请帮我解决一下
这是数据库:
package com.placella.todo;
import java.util.ArrayList;
import java.util.List;
import android.content.*;
import android.database.Cursor;
import android.database.sqlite.*;
public class Db extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
public Db(Context context) {
super(context, "todo", null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(
"CREATE TABLE list"
+ "("
+ "id INTEGER PRIMARY KEY AUTOINCREMENT,"
+ "name TEXT,"
+ "type TEXT,"
+ "note TEXT,"
+ "company TEXT,"
+ "price TEXT,"
+ "date TEXT,"
+ "lid INTEGER" // List items reference
+ ");"
);
db.execSQL(
"CREATE TABLE items"
+ "("
+ "lid INTEGER,"
+ "content TEXT,"
+ "checked INTEGER"
+ ");"
);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS list;");
db.execSQL("DROP TABLE IF EXISTS items;");
onCreate(db);
}
public void delete(Item item) {
SQLiteDatabase db = this.getWritableDatabase();
if (item.getType() == Item.LIST) {
String query = "SELECT lid FROM list WHERE id = '" + item.getId()+ "'";
Cursor cursor = db.rawQuery(query, null);
long lid;
if (cursor.moveToFirst()) {
lid = cursor.getInt(0) + 1;
} else {
lid = -1;
}
cursor.close();
db.execSQL("DELETE FROM items WHERE lid = '" + lid + "';");
}
db.execSQL("DELETE FROM list WHERE id = '" + item.getId() + "';");
}
public long add(Item item) throws Exception {
long id, lid = -1, retval;
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("name", item.getName());
values.put("type", item.getType());
values.put("note", item.getNotecontent());
values.put("company", item.getNotecontent());
values.put("price", item.getName());
values.put("date", item.getNotecontent());
if (item.getType() != Item.NOTE) {
lid = this.getNextListTableId();
values.put("lid", lid);
}
id = db.insert("list", null, values);
if (id == -1) {
throw new Exception("Can't insert into db.items");
} else {
item.setId(id);
}
if (item.getType() == Item.LIST) {
for (Item i : item.getListcontent()) {
values = new ContentValues();
values.put("lid", lid);
values.put("content", i.getName());
values.put("checked", i.getState());
retval = db.insert("items", null, values);
if (retval == -1) {
throw new Exception("Can't insert into db.list");
}
}
}
return id;
}
private long getNextListTableId() {
String query = "SELECT MAX(lid) FROM items";
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(query, null);
long id;
if (cursor.moveToFirst()) {
id = cursor.getInt(0) + 1;
} else {
id = 0;
}
cursor.close();
return id;
}
public List<Item> getList() {
List<Item> list = new ArrayList<Item>();
SQLiteDatabase db = this.getReadableDatabase();
String query = "SELECT id, name, type, note, company, price, date, lid FROM list";
Cursor c = db.rawQuery(query, null);
if (c.moveToFirst()) {
do {
Item item = new Item(
c.getString(1),
c.getInt(2)
);
List<Item> innerList = new ArrayList<Item>();
if (c.getInt(2) == Item.LIST) {
Cursor cc = db.rawQuery(
"SELECT content, checked FROM items WHERE lid = '" + c.getInt(4) + "'",
null
);
if (cc.moveToFirst()) {
do {
innerList.add(
new Item(cc.getString(0), Item.NOTE).setState(cc.getInt(1))
);
} while (cc.moveToNext());
}
cc.close();
}
item.setNotecontent(c.getString(3));
item.setId(c.getInt(0));
list.add(item);
item.setListcontent(innerList);
} while (c.moveToNext());
}
c.close();
return list;
}
}