这是我的错误：
03-30 21:34:59.928: E/AndroidRuntime(13901): FATAL EXCEPTION: main
03-30 21:34:59.928: E/AndroidRuntime(13901): Process: com.fcsit.leazy, PID: 13901
03-30 21:34:59.928: E/AndroidRuntime(13901): android.database.sqlite.SQLiteException: near "TABLE": syntax error (code 1): , while compiling: CREATE TABLE TABLE DATA (ID integer primary key autoincrement,USERNAME text,PASSWORD text,WEIGHT integer,HEIGHT integer,AGE integer,GENDER integer,CALORIES integer,CALORIES_BURNED integer,CALORIES_PEDO integer );
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1113)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:690)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1806)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1737)
03-30 21:34:59.928: E/AndroidRuntime(13901): at com.fcsit.leazy.DataBaseHelper.onCreate(DataBaseHelper.java:20)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
03-30 21:34:59.928: E/AndroidRuntime(13901): at com.fcsit.leazy.LoginDataBaseAdapter.open(LoginDataBaseAdapter.java:42)
03-30 21:34:59.928: E/AndroidRuntime(13901): at com.fcsit.leazy.HomeFragment.onCreateView(HomeFragment.java:28)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:938)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:478)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.support.v4.view.ViewPager$3.run(ViewPager.java:244)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.view.Choreographer.doCallbacks(Choreographer.java:614)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.view.Choreographer.doFrame(Choreographer.java:583)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:800)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.os.Handler.handleCallback(Handler.java:733)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.os.Handler.dispatchMessage(Handler.java:95)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.os.Looper.loop(Looper.java:146)
03-30 21:34:59.928: E/AndroidRuntime(13901): at android.app.ActivityThread.main(ActivityThread.java:5602)
03-30 21:34:59.928: E/AndroidRuntime(13901): at java.lang.reflect.Method.invokeNative(Native Method)
03-30 21:34:59.928: E/AndroidRuntime(13901): at java.lang.reflect.Method.invoke(Method.java:515)
03-30 21:34:59.928: E/AndroidRuntime(13901): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
03-30 21:34:59.928: E/AndroidRuntime(13901): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
03-30 21:34:59.928: E/AndroidRuntime(13901): at dalvik.system.NativeStart.main(Native Method)
我的代码如下： DatabseHelper.java
package com.fcsit.leazy;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class DataBaseHelper extends SQLiteOpenHelper
{
public DataBaseHelper(Context context, String name,CursorFactory factory, int version)
{
super(context, name, factory, version);
}
// Called when no database exists in disk and the helper class needs
// to create a new one.
@Override
public void onCreate(SQLiteDatabase _db)
{
_db.execSQL(LoginDataBaseAdapter.DATABASE_CREATE);
}
// Called when there is a database version mismatch meaning that the version
// of the database on disk needs to be upgraded to the current version.
@Override
public void onUpgrade(SQLiteDatabase _db, int _oldVersion, int _newVersion)
{
// Log the version upgrade.
Log.w("TaskDBAdapter", "Upgrading from version " +_oldVersion + " to " +_newVersion + ", which will destroy all old data");
// Upgrade the existing database to conform to the new version. Multiple
// previous versions can be handled by comparing _oldVersion and _newVersion
// values.
// The simplest case is to drop the old table and create a new one.
_db.execSQL("DROP TABLE IF EXISTS " + "TEMPLATE");
// Create a new one.
onCreate(_db);
}
}
LoginDataBaseAdapter.java
package com.fcsit.leazy;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
public class LoginDataBaseAdapter {
static final String DATABASE_NAME = "leazy.db";
static final int DATABASE_VERSION = 1;
public static final int NAME_COLUMN = 1;
// TODO: Create public field for each column in your table.
// SQL Statement to create a new database.
static final String DATABASE_CREATE = "CREATE TABLE " + "TABLE DATA" + " ("
+ "ID" + " integer primary key autoincrement,"
+ "USERNAME" +" text,"
+ "PASSWORD" +" text,"
+ "WEIGHT" + " integer,"
+ "HEIGHT" + " integer,"
+ "AGE" + " integer,"
+ "GENDER" + " integer,"
+ "CALORIES" + " integer,"
+ "CALORIES_BURNED" + " integer,"
+ "CALORIES_PEDO" + " integer"
+ " );";
// Variable to hold the database instance
public SQLiteDatabase db;
// Context of the application using the database.
private final Context context;
// Database open/upgrade helper
private DataBaseHelper dbHelper;
public LoginDataBaseAdapter(Context _context) {
context = _context;
dbHelper = new DataBaseHelper(context, DATABASE_NAME, null,
DATABASE_VERSION);
}
public LoginDataBaseAdapter open() throws SQLException {
db = dbHelper.getWritableDatabase();
return this;
}
public void close() {
db.close();
}
public SQLiteDatabase getDatabaseInstance() {
return db;
}
public void insertEntry(Data data){
ContentValues newValues= new ContentValues();
newValues.put("USERNAME", data.getUsername());
newValues.put("PASSWORD", data.getPassword());
newValues.put("AGE", data.getAge());
newValues.put("GENDER", data.getGender());
newValues.put("WEIGHT", data.getWeight());
newValues.put("HEIGHT", data.getHeight());
newValues.put("CALORIES", data.getCalories());
newValues.put("CALORIES_BURNED", data.getCalories_burned());
newValues.put("CALORIES_PEDO", data.getCalories_pedo());
db.insert("TABLE DATA", null, newValues);
}
public int deleteEntry(Data data) {
// String id=String.valueOf(ID);
String where = "USERNAME=?";
int numberOFEntriesDeleted = db.delete("TABLE DATA", where,
new String[] { data.getUsername() });
// Toast.makeText(context,
// "Number fo Entry Deleted Successfully : "+numberOFEntriesDeleted,
// Toast.LENGTH_LONG).show();
return numberOFEntriesDeleted;
}
public String getSinlgeEntry(String userName)
{
Cursor cursor=db.query("TABLE DATA", null, " USERNAME=?", new String[]{userName},
null, null, null);
if(cursor.getCount()<1) // UserName Not Exist
{
cursor.close();
return "NOT EXIST";
}
cursor.moveToFirst();
String password= cursor.getString(cursor.getColumnIndex("PASSWORD"));
cursor.close();
return password;
}
public void updateEntry(Data data) {
// Define the updated row content.
ContentValues updatedValues = new ContentValues();
// Assign values for each row.
updatedValues.put("USERNAME", data.getUsername());
updatedValues.put("PASSWORD", data.getPassword());
String where = "USERNAME = ?";
db.update("TABLE DATA", updatedValues, where, new String[] { data.getUsername() });
}
}
HomeFragment.java
package com.fcsit.leazy;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class HomeFragment extends Fragment {
Button btnSignIn, btnSignUp;
LoginDataBaseAdapter loginDataBaseAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.main, container, false);
// create a instance of SQLite Database
loginDataBaseAdapter = new LoginDataBaseAdapter(getActivity());
loginDataBaseAdapter = loginDataBaseAdapter.open();
// Get The Reference Of Buttons
btnSignIn = (Button) v.findViewById(R.id.buttonSignIN);
btnSignUp = (Button) v.findViewById(R.id.buttonSignUP);
btnSignIn.setOnClickListener(onClickListener);
btnSignUp.setOnClickListener(onClickListener);
return v;
// btnSignUp.setOnClickListener(new View.OnClickListener() {
// public void onClick(View v) {
// // TODO Auto-generated method stub
//
// // / Create Intent for SignUpActivity and Start The Activity
// Intent intentSignUP = new Intent(getActivity(),
// SignUpFragment.class);
// startActivity(intentSignUP);
// }
// });
}
final OnClickListener onClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == btnSignUp) {
// / Create Intent for SignUpActivity and Start The Activity
Intent intentSignUP = new Intent(getActivity(),
SignUpActivity.class);
startActivity(intentSignUP);
}
else if (v == btnSignIn) {
final Dialog dialog = new Dialog(getActivity());
dialog.setContentView(R.layout.login);
dialog.setTitle("Login");
// get the References of views
final EditText editTextUserName = (EditText) dialog
.findViewById(R.id.editTextUserNameToLogin);
final EditText editTextPassword = (EditText) dialog
.findViewById(R.id.editTextPasswordToLogin);
Button btnSignIn = (Button) dialog
.findViewById(R.id.buttonSignIn);
// Set On ClickListener
btnSignIn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// get The User name and Password
String userName = editTextUserName.getText().toString();
String password = editTextPassword.getText().toString();
// fetch the Password form database for respective user
// nameS
Data data = new Data();
String storedPassword = loginDataBaseAdapter
.getSinlgeEntry(data.getUsername());
// check if the Stored password matches with Password
// entered by
// user
if (password.equals(storedPassword)) {
Toast.makeText(getActivity(),
"Congrats: Login Successful",
Toast.LENGTH_LONG).show();
dialog.dismiss();
Intent intent = new Intent(getActivity(),
SelectionActivity.class);
startActivity(intent);
} else {
Toast.makeText(getActivity(),
"User Name or Password does not match",
Toast.LENGTH_LONG).show();
}
}
});
dialog.show();
}
}
};
}
SignUpFragment.java
package com.fcsit.leazy;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.Toast;
public class SignUpFragment extends Fragment {
EditText editTextUserName, editTextPassword, editTextConfirmPassword,
editTextWeight, editTextHeight, editTextAge;
Button btnCreateAccount;
RadioButton radioBtnMale, radioBtnFemale;
LoginDataBaseAdapter loginDataBaseAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.signup, container, false);
// ActionBar actionBar = getSupportActionBar();
// actionBar.setDisplayHomeAsUpEnabled(true);
// get Instance of Database Adapter
loginDataBaseAdapter = new LoginDataBaseAdapter(getActivity());
loginDataBaseAdapter = loginDataBaseAdapter.open();
// Get References of Views
editTextUserName = (EditText) v.findViewById(R.id.edittext_username);
// if (condition) {
//
// }
editTextPassword = (EditText) v.findViewById(R.id.edittext_password);
editTextConfirmPassword = (EditText) v
.findViewById(R.id.edittext_confirm_password);
editTextWeight = (EditText) v.findViewById(R.id.edittext_weight);
editTextHeight = (EditText) v.findViewById(R.id.edittext_height);
editTextAge = (EditText) v.findViewById(R.id.edittext_age);
radioBtnMale = (RadioButton) v.findViewById(R.id.radio_male);
radioBtnFemale = (RadioButton) v.findViewById(R.id.radio_female);
btnCreateAccount = (Button) v.findViewById(R.id.button_create_account);
btnCreateAccount.setOnClickListener(new View.OnClickListener() {
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch (view.getId()) {
case R.id.radio_male:
if (checked)
// Pirates are the best
break;
case R.id.radio_female:
if (checked)
// Ninjas rule
break;
}
}
public void onClick(View v) {
// TODO Auto-generated method stub
String userName = editTextUserName.getText().toString();
String password = editTextPassword.getText().toString();
String confirmPassword = editTextConfirmPassword.getText()
.toString();
String age = editTextAge.getText().toString();
String weight = editTextWeight.getText().toString();
String height = editTextHeight.getText().toString();
isAllFieldsValid();
// check if any of the fields are vacant
if (userName.equals("") || password.equals("")
|| age.equals("") || confirmPassword.equals("")
|| weight.equals("") || height.equals("")) {
// Toast.makeText(getActivity(), "Field Vaccant",
// Toast.LENGTH_LONG).show();
return;
}
// check if both password matches
if (!password.equals(confirmPassword)) {
Toast.makeText(getActivity(), "Password does not match",
Toast.LENGTH_LONG).show();
return;
} else {
// Save the Data in Database
Data suData= new Data();
suData.setUsername(userName);
suData.setPassword(password);
loginDataBaseAdapter.insertEntry(suData);
Toast.makeText(getActivity(),
"Account Successfully Created ", Toast.LENGTH_LONG)
.show();
Intent intent = new Intent(getActivity(),LoginActivity.class);
startActivity(intent);
}
}
});
return v;
}
private boolean isAllFieldsValid() {
boolean valid = true;
String trim_userName = editTextUserName.getText().toString().trim();
if("".equals(trim_userName)){
editTextUserName.setError("Please enter your username");
valid = false;
}
String trim_pasword = editTextPassword.getText().toString().trim();
if("".equals(trim_pasword)){
editTextPassword.setError("Please enter your password");
valid = false;
}
String trim_confirm_pwd = editTextConfirmPassword.getText().toString().trim();
if("".equals(trim_confirm_pwd)){
editTextConfirmPassword.setError("Please enter your confirmed password");
valid = false;
}
String trim_weight = editTextWeight.getText().toString().trim();
if("".equals(trim_weight)){
editTextWeight.setError("Please enter your weight");
valid = false;
}
String trim_height = editTextHeight.getText().toString().trim();
if("".equals(trim_height)){
editTextHeight.setError("Please enter your height");
valid = false;
}
String trim_age = editTextAge.getText().toString().trim();
if("".equals(trim_age)){
editTextAge.setError("Please enter your age");
valid = false;
}
if (radioBtnFemale.isChecked()==false && radioBtnMale.isChecked()==false) {
Toast.makeText(getActivity(), "Please selec t your gender", Toast.LENGTH_SHORT).show();;
return false;
}
return valid;
}
}
对于庞大的代码感到抱歉。以前我的数据库只存储了用户名和密码，但在我添加了其他字段，如年龄，性别，体重，身高，卡路里之后......问题就出现了。我仍然很难理解db，所以请帮忙。
答案 0 :(得分：1)
TABLE DATA不是有效的表名，因为它包含空格字符。
您可以在任何地方引用名称，但使用其他名称会更容易，例如TableData。