我的TABLE_NAME的“类别”似乎有些不对劲，但我可能错了。
我所知道的是，我收到了这个错误，还有其他一些错误。我花了几个小时在这个改变代码上无济于事。请参阅logcat和下面的类。
我希望有更多经验的SQLite可以指出我正确的方向：）
感谢您的时间。
logcat的：
11-17 13:55:55.556 6903-6966/com.example.michael.budgetapp E/SQLiteLog: (1) near "categories": syntax error
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: Process: com.example.michael.budgetapp, PID: 6903
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: java.lang.RuntimeException: An error occured while executing doInBackground()
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.os.AsyncTask$3.done(AsyncTask.java:304)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.FutureTask.run(FutureTask.java:242)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.lang.Thread.run(Thread.java:818)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: Caused by: android.database.sqlite.SQLiteException: near "categories": syntax error (code 1): , while compiling: CREATE TABLE CATEGORIES categories (_id INTEGER PRIMARY KEY AUTOINCREMENT, category_name TEXT, category_date TEXT, frequency TEXT, currency TEXT,duration_value TEXT, duration_modifier TEXT, overage TEXT, surplus TEXT);
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1674)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1605)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at com.example.michael.budgetapp.Database.CategoriesTable.onCreate(CategoriesTable.java:44)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:251)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at com.example.michael.budgetapp.Database.Add.doInBackground(Add.java:37)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at com.example.michael.budgetapp.Database.Add.doInBackground(Add.java:9)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.os.AsyncTask$2.call(AsyncTask.java:292)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
11-17 13:55:55.557 6903-6966/com.example.michael.budgetapp E/AndroidRuntime: at java.lang.Thread.run(Thread.java:818)
AddCategory.class：
public class AddCategory extends AppCompatActivity {
EditText catName;
Spinner currencySpinner, freqSpinner, durationValueSpinner, durationModifierSpinner;
LinearLayout overageReaction, surplusReaction;
RadioGroup overageRG, surplusRG;
RadioButton overStatic, overVariable, underStatic, underVariable;
TextView reminder, example;
RelativeLayout categoryRelativeLayout;
Snackbar snackbar;
Time today = new Time(Time.getCurrentTimezone());
String currencySelection, dMSselection, dVSselection;
private Cursor data = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_category);
categoryRelativeLayout = (RelativeLayout) findViewById(R.id.categoryRelativeLayout);
overageRG = (RadioGroup) findViewById(R.id.overageRG);
surplusRG = (RadioGroup) findViewById(R.id.surplusRG);
overStatic = (RadioButton) findViewById(R.id.overStatic);
overVariable = (RadioButton) findViewById(R.id.overVariable);
underStatic = (RadioButton) findViewById(R.id.underStatic);
underVariable = (RadioButton) findViewById(R.id.underVariable);
overageReaction = (LinearLayout) findViewById(R.id.overageReaction);
surplusReaction = (LinearLayout) findViewById(R.id.surplusReaction);
catName = (EditText) findViewById(R.id.catName);
currencySpinner = (Spinner) findViewById(R.id.currencySpinner);
freqSpinner = (Spinner) findViewById(R.id.freqSpinner);
durationValueSpinner = (Spinner) findViewById(R.id.durationValueSpinner);
durationModifierSpinner = (Spinner) findViewById(R.id.durationModifierSpinner);
reminder = (TextView) findViewById(R.id.reminder);
example = (TextView) findViewById(R.id.example);
Toolbar toolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Add a Category");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
ArrayAdapter<CharSequence> currencyAdapter = ArrayAdapter.createFromResource(this,
R.array.currency, android.R.layout.simple_spinner_item);
currencyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
currencySpinner.setAdapter(currencyAdapter);
ArrayAdapter<CharSequence> freqAdapter = ArrayAdapter.createFromResource(this,
R.array.frequency, android.R.layout.simple_spinner_item);
freqAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
freqSpinner.setAdapter(freqAdapter);
ArrayAdapter<CharSequence> durModAdapter = ArrayAdapter.createFromResource(this,
R.array.duration, android.R.layout.simple_spinner_item);
durModAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
durationModifierSpinner.setAdapter(durModAdapter);
ArrayAdapter<CharSequence> durValueAdapter = ArrayAdapter.createFromResource(this,
R.array.onetothirtyone, android.R.layout.simple_spinner_item);
durValueAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
durationValueSpinner.setAdapter(durValueAdapter);
freqSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if (freqSpinner.getSelectedItem().toString().equals("Daily")) {
overageReaction.setVisibility(View.INVISIBLE);
surplusReaction.setVisibility(View.INVISIBLE);
reminder.setText(getText(R.string.suggestion));
example.setVisibility(View.INVISIBLE);
} else {
overageReaction.setVisibility(View.VISIBLE);
surplusReaction.setVisibility(View.VISIBLE);
reminder.setText(getText(R.string.variableBudgetExplainer));
example.setVisibility(View.VISIBLE);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
overageReaction.setVisibility(View.INVISIBLE);
surplusReaction.setVisibility(View.INVISIBLE);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_add_category, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
/*
String overageValue, surplusValue;
overageValue = ((RadioButton)this.findViewById(overageRG.getCheckedRadioButtonId())).getText().toString();
surplusValue = ((RadioButton)this.findViewById(surplusRG.getCheckedRadioButtonId())).getText().toString();
*/
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
if (id == R.id.delete) {
Toast.makeText(getBaseContext(), "Category data lost!", Toast.LENGTH_LONG).show();
NavUtils.navigateUpFromSameTask(this);
return true;
}
if (id == R.id.save) {
if (freqSpinner.getSelectedItem().toString().equals("Daily")) {
if (TextUtils.isEmpty(catName.getText().toString())) {
snackbar.make(categoryRelativeLayout, "Please enter a Category name", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
} else {
today.setToNow();
Add at = new Add(AddCategory.this);
at.execute(
catName.getText().toString(), // category_name edittext
today.format("%Y-%m-%d %H:%M:%S"), // date
freqSpinner.getSelectedItem().toString(), // frequency spinner
currencySpinner.getSelectedItem().toString(), // currency spinner
durationValueSpinner.getSelectedItem().toString(), // duration_value spinner
durationModifierSpinner.getSelectedItem().toString(), // duration_modifier spinner
((RadioButton)this.findViewById(overageRG.getCheckedRadioButtonId())).getText().toString(), // overage radiogroup
((RadioButton)this.findViewById(surplusRG.getCheckedRadioButtonId())).getText().toString() // surplus radiogroup
);
Toast.makeText(getBaseContext(), "Category saved!", Toast.LENGTH_LONG).show();
NavUtils.navigateUpFromSameTask(this);
}
} else {
if (overageRG.getCheckedRadioButtonId() == -1 || surplusRG.getCheckedRadioButtonId() == -1) {
snackbar.make(categoryRelativeLayout, "Please select your reactions", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
} else if (TextUtils.isEmpty(catName.getText().toString())) {
snackbar.make(categoryRelativeLayout, "Please enter a Category name", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
} else {
today.setToNow();
Add at = new Add(AddCategory.this);
at.execute(
catName.getText().toString(), // category_name spinner
today.format("%Y-%m-%d %H:%M:%S"), // date
freqSpinner.getSelectedItem().toString(), // frequency spinner
currencySpinner.getSelectedItem().toString(), // currency spinner
durationValueSpinner.getSelectedItem().toString(), // duration_value spinner
durationModifierSpinner.getSelectedItem().toString(), // duration_modifier spinner
((RadioButton)this.findViewById(overageRG.getCheckedRadioButtonId())).getText().toString(), // overage radiogroup
((RadioButton)this.findViewById(surplusRG.getCheckedRadioButtonId())).getText().toString() // surplus radiogroup
);
Toast.makeText(getBaseContext(), "Category saved!", Toast.LENGTH_LONG).show();
NavUtils.navigateUpFromSameTask(this);
}
}
return true;
}
return super.onOptionsItemSelected(item);
}
}
Add.class：
public class Add extends AsyncTask<String, Void, Long> {
private WeakReference<Context> weakReference;
private CategoriesTable db;
private Load load;
public Add(Context context){
weakReference = new WeakReference<>(context);
db = CategoriesTable.getInstance(weakReference.get());
}
@Override
protected void onPostExecute(Long newKeyId) {
load = new Load(weakReference.get());
load.execute();
}
@Override
protected Long doInBackground(String... params) {
ContentValues cv = new ContentValues();
cv.put(CategoriesTable.CATEGORY_NAME, params[0]);
cv.put(CategoriesTable.DATE, params[1]);
cv.put(CategoriesTable.FREQUENCY, params[2]);
cv.put(CategoriesTable.CURRENCY, params[3]);
cv.put(CategoriesTable.DURATION_VALUE, params[4]);
cv.put(CategoriesTable.DURATION_MODIFIER, params[5]);
cv.put(CategoriesTable.OVERAGE, params[6]);
cv.put(CategoriesTable.SURPLUS, params[7]);
return db.getWritableDatabase().insert(CategoriesTable.CATEGORIES, null, cv);
}
}
CategoriesTable.class：
public class CategoriesTable extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "budgets.db";
private static final int SCHEMA = 1;
public static final String KEY_ID = "_id";
public static final String CATEGORIES = "categories";
public static final String CATEGORY_NAME = "category_name";
public static final String DATE = "category_date";
public static final String FREQUENCY = "frequency";
public static final String CURRENCY = "currency";
public static final String DURATION_VALUE = "duration_value";
public static final String DURATION_MODIFIER = "duration_modifier";
public static final String OVERAGE = "overage";
public static final String SURPLUS = "surplus";
private static CategoriesTable mInstance = null;
public static synchronized CategoriesTable getInstance(Context context) {
if (mInstance == null) {
mInstance = new CategoriesTable(context.getApplicationContext());
}
return mInstance;
}
public CategoriesTable(Context context) {
super(context, DATABASE_NAME, null, SCHEMA);
}
public CategoriesTable(Context context, String name, SQLiteDatabase.CursorFactory factory,
int version) {
super(context, name, factory, version);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE CATEGORIES categories (_id INTEGER PRIMARY KEY AUTOINCREMENT, " +
"category_name TEXT, category_date TEXT, frequency TEXT, currency TEXT," +
"duration_value TEXT, duration_modifier TEXT, overage TEXT, surplus TEXT);");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
int upgradeTo = oldVersion + 1;
while (upgradeTo <= newVersion) {
switch (upgradeTo) {
case 2:
break;
}
upgradeTo++;
}
}
}
答案 0 :(得分：4)
您的创建表声明
中有一个重复的表名这个：
db.execSQL("CREATE TABLE categories (_id INTEGER PRIMARY KEY AUTOINCREMENT, " +
"category_name TEXT, category_date TEXT, frequency TEXT, currency TEXT," +
"duration_value TEXT, duration_modifier TEXT, overage TEXT, surplus TEXT);");
应为：
$validator = Validator::make(...);
$validator->after(function($validator) use ($email) {
if (emailExist($email)) {
$validator->errors()->add('email', 'This email has been used!');
}
});
if ($validator->fails()) {
return redirect('somewhere')
->withErrors($validator);
}
答案 1 :(得分：2)
您不需要在此处将表格名称放两次
CREATE TABLE CATEGORIES categories
将其更改为
CREATE TABLE categories