我是SQLite的新手。我有一个活动，其中我有不同的字段，如姓名，电子邮件，出生日期等。当用户填写信息并单击保存按钮我希望它保存到数据库。但是我被困在中途并且不知道该怎么做。如何将编辑文本视图中的数据保存到保存按钮上的数据库中。请帮助我。 我正在分享我的代码。
DataBaseHelper.java
public class DatabaseHelper extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "NewUserDb.db";
private static final String TABLE_INFO = "info";
public static final String COLUMN_ID = "_id";
public static final String COLUMN_GOAL = "userGOAL";
public static final String COLUMN_NAME = "userName";
public static final String COLUMN_EMAIL = "userEmail";
public static final String COLUMN_DOB = "userDOB";
public static final String COLUMN_HEIGHT = "userHeight";
public static final String COLUMN_WEIGHT = "userWeight";
public static final String COLUMN_GENGER = "userGender";;
public static final String COLUMN_ZIP = "userZIP";
private static final String[] COLUMNS = { COLUMN_ID, COLUMN_GOAL,
COLUMN_NAME, COLUMN_EMAIL, COLUMN_DOB, COLUMN_HEIGHT,
COLUMN_WEIGHT, COLUMN_GENGER, COLUMN_ZIP };
// http://www.techotopia.com/index.php/An_Android_SQLite_Database_Tutorial
/*
* public DatabaseHelper(Context context, String name, CursorFactory
* factory, int version) { super(context, name, factory, version); // TODO
* Auto-generated constructor stub
*
* }
*/
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
String CREATE_USER_TABLE = "CREATE TABLE User ( "
+ "id INTEGER PRIMARY KEY AUTOINCREMENT, " + "gaol TEXT, "
+ "name TEXT )";
db.execSQL(CREATE_USER_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS users");
// create fresh books table
this.onCreate(db);
}
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
public void addUser(NewUserDb newuserdb) {
// for logging
// Log.d("addBook", book.toString());
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
// 2. create ContentValues to add key "column"/value
ContentValues values = new ContentValues();
values.put(COLUMN_GOAL, newuserdb.getGoal()); // get title
values.put(COLUMN_NAME, newuserdb.getName()); // get author
values.put(COLUMN_EMAIL, newuserdb.getEmail());
values.put(COLUMN_DOB, newuserdb.getDob());
values.put(COLUMN_HEIGHT, newuserdb.getHeight());
values.put(COLUMN_WEIGHT, newuserdb.getWeight());
values.put(COLUMN_GENGER, newuserdb.getGender());
values.put(COLUMN_ZIP, newuserdb.getZip());
// 3. insert
db.insert(TABLE_INFO, // table
null, // nullColumnHack
values); // key/value -> keys = column names/ values = column
// values
// 4. close
db.close();
}
public NewUserDb getNewUserDb(int id) {
// 1. get reference to readable DB
SQLiteDatabase db = this.getReadableDatabase();
// 2. build query
Cursor cursor = db.query(TABLE_INFO, // a. table
COLUMNS, // b. column names
" id = ?", // c. selections
new String[] { String.valueOf(id) }, // d. selections args
null, // e. group by
null, // f. having
null, // g. order by
null); // h. limit
// 3. if we got results get the first one
if (cursor != null)
cursor.moveToFirst();
// 4. build book object
NewUserDb newUserdb = new NewUserDb();
newUserdb.setId(Integer.parseInt(cursor.getString(0)));
newUserdb.setGoal(cursor.getString(1));
newUserdb.setName(cursor.getString(2));
newUserdb.setEmail(cursor.getString(3));
newUserdb.setDob(cursor.getString(4));
newUserdb.setHeight(cursor.getString(5));
newUserdb.setWeight(cursor.getString(6));
newUserdb.setGender(cursor.getString(7));
newUserdb.setZip(cursor.getString(8));
// Log.d("getBook("+id+")", book.toString());
// 5. return book
return newUserdb;
}
// Deleting single book
public void deleteUser(NewUserDb newuserDB) {
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
// 2. delete
db.delete(TABLE_INFO, COLUMN_ID + " = ?",
new String[] { String.valueOf(newuserDB.getId()) });
// 3. close
db.close();
Log.d("deleteBook", newuserDB.toString());
}
}
NewUserDb.java
public class NewUserDb {
private int id;
private String goal;
private String name;
private String email;
private String dob;
private String height;
private String weight;
private String gender;
private String zip;
public NewUserDb() {
}
public NewUserDb(int id, String goal, String name, String email,
String dob, String height, String weight, String gender, String zip) {
super();
this.id = id;
this.goal = goal;
this.name = name;
this.email = email;
this.dob = dob;
this.height = height;
this.weight = weight;
this.gender = gender;
this.zip = zip;
};
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getGoal() {
return goal;
}
public void setGoal(String goal) {
this.goal = goal;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getDob() {
return dob;
}
public void setDob(String dob) {
this.dob = dob;
}
public String getHeight() {
return height;
}
public void setHeight(String height) {
this.height = height;
}
public String getWeight() {
return weight;
}
public void setWeight(String weight) {
this.weight = weight;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getZip() {
return zip;
}
public void setZip(String zip) {
this.zip = zip;
}
public String toString() {
return "User [id=" + id + ", goal=" + goal + ", name=" + name
+ ", email=" + email + ", dob=" + dob + ", height=" + height
+ ", weight=" + weight + ", gender=" + gender + ", zip =" + zip
+ "]";
}
}
AccountActivity.java
public class AccountActivity extends Activity {
private EditText et_weight, et_height, et_email, et_dob, et_name;
private Button btn_uploadPhoto, btn_shootPhoto, btn_del, btn_save;
private Switch genderSwitch;
private DatePickerDialog datePickerDialog;
private String year;
private String month;
private String day;
DatabaseHelper dbh = new DatabaseHelper(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.accounts);
btn_shootPhoto = (Button) findViewById(R.id.button1);
btn_uploadPhoto = (Button) findViewById(R.id.button2);
btn_del = (Button) findViewById(R.id.btn_del);
btn_save = (Button) findViewById(R.id.btn_save);
et_dob = (EditText) findViewById(R.id.et_dob);
genderSwitch = (Switch) findViewById(R.id.mySwitch);
et_name = (EditText) findViewById(R.id.et_name);
et_email = (EditText) findViewById(R.id.et_email);
et_height = (EditText) findViewById(R.id.et_height);
et_height.setInputType(InputType.TYPE_CLASS_NUMBER);
et_weight = (EditText) findViewById(R.id.et_weight);
et_weight.setInputType(InputType.TYPE_CLASS_NUMBER);
btn_save.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
//what to do here ??
}
});
}
答案 0 :(得分：0)
在EditText上尝试.getText()
如yourEditText.getText();并将其设置为NewUserDb并将NewUserDb对象传递给DatabaseHelper类的addUser方法
答案 1 :(得分：-1)
首先在DatabaseHelper类中声明数据库创建表查询字符串，如下所示：
private static final String DATABASE_CREATE_USER = "create table UserInfo("
+ "_id VARCHAR(20)," + "userGOAL VARCHAR(20),"
+ "userName VARCHAR(20)," + "userEmail VARCHAR(20),"
+ "userDOB VARCHAR(20)," + "userHeight VARCHAR(10),"
+ "userWeight VARCHAR(10)," + "userGender VARCHAR(10),"
+ "userZIP VARCHAR(10) "+ ")";
然后在DatabaseHelper的onCreate方法中写入
db.execSQL(DATABASE_CREATE_USER);
然后在您的AcountActivity中声明SqliteDatabase和DatabseHelper的对象，如下所示：
DatabaseHelper dbHelper;
SQLiteDatabase db;
在你的按钮onClick方法中写下面的代码：
dbHelper= new DatabaseHelper(ActountActivity.this);
db = dbHelper.getWritableDatabase();
ContentValues insertValues = new ContentValues();
insertValues.put("_id", "User_Id");
insertValues.put("userGOAL", "User_Goal");
insertValues.put("userName", "User_Name");
insertValues.put("userEmail", "User_Email");
insertValues.put("userDOB", "User_DOB");
insertValues.put("userHeight", "User_Height");
insertValues.put("userWeight", "User_Weight");
insertValues.put("userGender", "User_Gender");
insertValues.put("userZIP", "User_Zip");
db.insert("UserInfo", null, insertValues);
db.close();
愿这对你有所帮助。