读取游标行失败 window android
failed to read row of cursor window android
我在我的 android 应用程序中使用 sqlite 来处理我的会话。我希望用户注册，然后在登录后转到配置文件并在配置文件中显示一些数据库项目。
android 工作室不断显示：Unable to start activity ComponentInfo{com.example.neshat.bluedot/com.example.neshat.bluedot.profile}: java.lang.IllegalStateException: Couldn't read row 0, col 5 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
我检查了类似的问题，其中 none 个是我的答案。我给你复制了相关代码。
这是我的 sqlitehandlre:
@Override
public void onCreate(SQLiteDatabase db)
{
String CREATE_LOGIN_TABLE = "CREATE TABLE " + TABLE_USER + "("
+ KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT,"
+ KEY_EMAIL + " TEXT UNIQUE," + KEY_TOTALPOINTS + "TEXT," + KEY_DIGIPOINTS + "TEXT," + KEY_UID + " TEXT,"
+ KEY_CREATED_AT + " TEXT" + ");";
db.execSQL(CREATE_LOGIN_TABLE);
Log.d(TAG, "Database tables created");
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_USER);
// Create tables again
onCreate(db);
}
/**
* Storing user details in database
* */ // db.addUser(name, email,totalpoints, digipoints, uid, created_at);
public void addUser(String name, String email ,String totalpoints, String digipoints , String uid, String created_at) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, name); // Name
values.put(KEY_EMAIL, email); // Email
values.put(KEY_TOTALPOINTS, totalpoints);
values.put(KEY_DIGIPOINTS, digipoints);
values.put(KEY_UID, uid);
values.put(KEY_CREATED_AT, created_at); // Created At
// Inserting Row
long id = db.insert(TABLE_USER, null, values);
db.close(); // Closing database connection
Log.d(TAG, "New user inserted into sqlite: " + id);
}
/**
* Getting user data from database
* */
public HashMap<String, String> getUserDetails() {
HashMap<String, String> user = new HashMap<String, String>();
String selectQuery = "SELECT * FROM " + TABLE_USER;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// Move to first row
cursor.moveToFirst();
if (cursor.getCount() > 0) {
user.put("name", cursor.getString(1));
user.put("email", cursor.getString(2));
user.put("totalpoints", cursor.getString(3));
user.put("digipoints", cursor.getString(4));
user.put("uid", cursor.getString(5));
user.put("created_at", cursor.getString(6));
}
cursor.close();
db.close();
// return user
Log.d(TAG, "Fetching user from Sqlite: " + user.toString());
return user;
}
这是我的收银机activity
private void registerUser(final String name, final String email, final String password)
{
// Tag used to cancel the request
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
StringRequest strReq = new StringRequest(Method.POST, AppConfig.URL_REGISTER, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response.toString());
Toast.makeText(getApplicationContext(), response.toString(), Toast.LENGTH_LONG).show();
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error)
{
// User successfully stored in MySQL
// Now store the user in sqlite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String email = user.getString("email");
String totalpoints = user.getString("totalpoints");
String digipoints = user.getString("digipoints");
String created_at = user.getString("created_at");
Log.d("sqlite", uid);
Log.d("sqlite", name);
Log.d("sqlite", email);
Log.d("sqlite", totalpoints);
Log.d("sqlite", digipoints);
Log.d("sqlite", created_at);
// Inserting row in users table
db.addUser(name, email,totalpoints, digipoints, uid, created_at);
Toast.makeText(getApplicationContext(), "User successfully registered. Try login now!", Toast.LENGTH_LONG).show();
// Launch login activity
Intent intent = new Intent(
RegisterActivity.this,
LoginActivity.class);
startActivity(intent);
finish();
} else
{
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(), errorMsg, Toast.LENGTH_LONG).show();
Log.d("Debug", errorMsg);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.toString());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
这是我的个人资料 activity :
db = new SQLiteHandler(getApplicationContext());
// session manager
session = new SessionManager(getApplicationContext());
txtName = (TextView) findViewById(R.id.name);
pointsview = (TextView) findViewById(R.id.points);
//txtEmail = (TextView) findViewById(R.id.email);
btnLogout = (Button) findViewById(R.id.lgot);
if (!session.isLoggedIn())
{
logoutUser();
}
//Fetching user details from sqlite
HashMap<String, String> user = db.getUserDetails();
String name = user.get("name");
String email = user.get("email");
String tpoints = user.get("totalpoints");
String dpoints = user.get("digipoints");
// Displaying the user details on the screen
txtName.setText(name);
pointsview.setText(tpoints);
这是我的 logcat:
mple.neshat.bluedot E/CursorWindow﹕ Failed to read row 0, column 5 from a CursorWindow which has 2 rows, 5 columns.
01-24 05:59:22.362 11101-11101/com.example.neshat.bluedot D/AndroidRuntime﹕ Shutting down VM
01-24 05:59:22.362 11101-11101/com.example.neshat.bluedot E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.neshat.bluedot, PID: 11101
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.neshat.bluedot/com.example.neshat.bluedot.profile}: java.lang.IllegalStateException: Couldn't read row 0, col 5 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access0(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.IllegalStateException: Couldn't read row 0, col 5 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.database.CursorWindow.nativeGetString(Native Method)
at android.database.CursorWindow.getString(CursorWindow.java:438)
at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51)
at com.example.neshat.bluedot.helper.SQLiteHandler.getUserDetails(SQLiteHandler.java:101)
at com.example.neshat.bluedot.profile.onCreate(profile.java:130)
at android.app.Activity.performCreate(Activity.java:5933)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access0(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
编辑：
我替换了 user.put("name", cursor.getString(1));与 user.put("name", cursor.getString(cursor.getColumnIndex("name")))
但我的错误已更改为：
Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.database.CursorWindow.nativeGetString(Native Method)
at android.database.CursorWindow.getString(CursorWindow.java:438)
at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51)
at com.example.neshat.bluedot.helper.SQLiteHandler.getUserDetails(SQLiteHandler.java:100)
at com.example.neshat.bluedot.profile.onCreate(profile.java:130)
总分列有错误，我不明白为什么。
尝试从 Cursor 使用此方法而不是直接传递索引：
/**
* Returns the zero-based index for the given column name, or -1 if the column doesn't exist.
* If you expect the column to exist use {@link #getColumnIndexOrThrow(String)} instead, which
* will make the error more clear.
*
* @param columnName the name of the target column.
* @return the zero-based column index for the given column name, or -1 if
* the column name does not exist.
* @see #getColumnIndexOrThrow(String)
*/
int getColumnIndex(String columnName);
然后你会得到这样的东西：
user.put("email", cursor.getString(cursor.getColumnIndex("email")));
它可能会解决你的问题。
祝你好运。
SELECT * 结果集中没有第 5 列。
看起来您已经向 CREATE TABLE 添加了列，但您忘记了增加数据库版本来升级它，或者忘记卸载您的应用程序以摆脱旧数据库。有关详细信息，请参阅 When is SQLiteOpenHelper onCreate() / onUpgrade() run?。
请注意，您的 CREATE TABLE 中也存在一些白色 space 问题：列名和类型之间缺少 space。再次修复 运行 您的代码之前的那些，以免在例如 "no such column" 上出现 "no such column" 错误插入。
我在我的 android 应用程序中使用 sqlite 来处理我的会话。我希望用户注册，然后在登录后转到配置文件并在配置文件中显示一些数据库项目。
android 工作室不断显示：Unable to start activity ComponentInfo{com.example.neshat.bluedot/com.example.neshat.bluedot.profile}: java.lang.IllegalStateException: Couldn't read row 0, col 5 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
我检查了类似的问题，其中 none 个是我的答案。我给你复制了相关代码。 这是我的 sqlitehandlre:
@Override
public void onCreate(SQLiteDatabase db)
{
String CREATE_LOGIN_TABLE = "CREATE TABLE " + TABLE_USER + "("
+ KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT,"
+ KEY_EMAIL + " TEXT UNIQUE," + KEY_TOTALPOINTS + "TEXT," + KEY_DIGIPOINTS + "TEXT," + KEY_UID + " TEXT,"
+ KEY_CREATED_AT + " TEXT" + ");";
db.execSQL(CREATE_LOGIN_TABLE);
Log.d(TAG, "Database tables created");
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_USER);
// Create tables again
onCreate(db);
}
/**
* Storing user details in database
* */ // db.addUser(name, email,totalpoints, digipoints, uid, created_at);
public void addUser(String name, String email ,String totalpoints, String digipoints , String uid, String created_at) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, name); // Name
values.put(KEY_EMAIL, email); // Email
values.put(KEY_TOTALPOINTS, totalpoints);
values.put(KEY_DIGIPOINTS, digipoints);
values.put(KEY_UID, uid);
values.put(KEY_CREATED_AT, created_at); // Created At
// Inserting Row
long id = db.insert(TABLE_USER, null, values);
db.close(); // Closing database connection
Log.d(TAG, "New user inserted into sqlite: " + id);
}
/**
* Getting user data from database
* */
public HashMap<String, String> getUserDetails() {
HashMap<String, String> user = new HashMap<String, String>();
String selectQuery = "SELECT * FROM " + TABLE_USER;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// Move to first row
cursor.moveToFirst();
if (cursor.getCount() > 0) {
user.put("name", cursor.getString(1));
user.put("email", cursor.getString(2));
user.put("totalpoints", cursor.getString(3));
user.put("digipoints", cursor.getString(4));
user.put("uid", cursor.getString(5));
user.put("created_at", cursor.getString(6));
}
cursor.close();
db.close();
// return user
Log.d(TAG, "Fetching user from Sqlite: " + user.toString());
return user;
}
这是我的收银机activity
private void registerUser(final String name, final String email, final String password)
{
// Tag used to cancel the request
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
StringRequest strReq = new StringRequest(Method.POST, AppConfig.URL_REGISTER, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response.toString());
Toast.makeText(getApplicationContext(), response.toString(), Toast.LENGTH_LONG).show();
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error)
{
// User successfully stored in MySQL
// Now store the user in sqlite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String email = user.getString("email");
String totalpoints = user.getString("totalpoints");
String digipoints = user.getString("digipoints");
String created_at = user.getString("created_at");
Log.d("sqlite", uid);
Log.d("sqlite", name);
Log.d("sqlite", email);
Log.d("sqlite", totalpoints);
Log.d("sqlite", digipoints);
Log.d("sqlite", created_at);
// Inserting row in users table
db.addUser(name, email,totalpoints, digipoints, uid, created_at);
Toast.makeText(getApplicationContext(), "User successfully registered. Try login now!", Toast.LENGTH_LONG).show();
// Launch login activity
Intent intent = new Intent(
RegisterActivity.this,
LoginActivity.class);
startActivity(intent);
finish();
} else
{
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(), errorMsg, Toast.LENGTH_LONG).show();
Log.d("Debug", errorMsg);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.toString());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
这是我的个人资料 activity :
db = new SQLiteHandler(getApplicationContext());
// session manager
session = new SessionManager(getApplicationContext());
txtName = (TextView) findViewById(R.id.name);
pointsview = (TextView) findViewById(R.id.points);
//txtEmail = (TextView) findViewById(R.id.email);
btnLogout = (Button) findViewById(R.id.lgot);
if (!session.isLoggedIn())
{
logoutUser();
}
//Fetching user details from sqlite
HashMap<String, String> user = db.getUserDetails();
String name = user.get("name");
String email = user.get("email");
String tpoints = user.get("totalpoints");
String dpoints = user.get("digipoints");
// Displaying the user details on the screen
txtName.setText(name);
pointsview.setText(tpoints);
这是我的 logcat:
mple.neshat.bluedot E/CursorWindow﹕ Failed to read row 0, column 5 from a CursorWindow which has 2 rows, 5 columns.
01-24 05:59:22.362 11101-11101/com.example.neshat.bluedot D/AndroidRuntime﹕ Shutting down VM
01-24 05:59:22.362 11101-11101/com.example.neshat.bluedot E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.neshat.bluedot, PID: 11101
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.neshat.bluedot/com.example.neshat.bluedot.profile}: java.lang.IllegalStateException: Couldn't read row 0, col 5 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access0(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.IllegalStateException: Couldn't read row 0, col 5 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.database.CursorWindow.nativeGetString(Native Method)
at android.database.CursorWindow.getString(CursorWindow.java:438)
at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51)
at com.example.neshat.bluedot.helper.SQLiteHandler.getUserDetails(SQLiteHandler.java:101)
at com.example.neshat.bluedot.profile.onCreate(profile.java:130)
at android.app.Activity.performCreate(Activity.java:5933)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access0(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
编辑： 我替换了 user.put("name", cursor.getString(1));与 user.put("name", cursor.getString(cursor.getColumnIndex("name")))
但我的错误已更改为：
Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.database.CursorWindow.nativeGetString(Native Method)
at android.database.CursorWindow.getString(CursorWindow.java:438)
at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51)
at com.example.neshat.bluedot.helper.SQLiteHandler.getUserDetails(SQLiteHandler.java:100)
at com.example.neshat.bluedot.profile.onCreate(profile.java:130)
总分列有错误，我不明白为什么。
尝试从 Cursor 使用此方法而不是直接传递索引：
/**
* Returns the zero-based index for the given column name, or -1 if the column doesn't exist.
* If you expect the column to exist use {@link #getColumnIndexOrThrow(String)} instead, which
* will make the error more clear.
*
* @param columnName the name of the target column.
* @return the zero-based column index for the given column name, or -1 if
* the column name does not exist.
* @see #getColumnIndexOrThrow(String)
*/
int getColumnIndex(String columnName);
然后你会得到这样的东西：
user.put("email", cursor.getString(cursor.getColumnIndex("email")));
它可能会解决你的问题。
祝你好运。
SELECT * 结果集中没有第 5 列。
看起来您已经向 CREATE TABLE 添加了列，但您忘记了增加数据库版本来升级它，或者忘记卸载您的应用程序以摆脱旧数据库。有关详细信息，请参阅 When is SQLiteOpenHelper onCreate() / onUpgrade() run?。
请注意，您的 CREATE TABLE 中也存在一些白色 space 问题：列名和类型之间缺少 space。再次修复 运行 您的代码之前的那些，以免在例如 "no such column" 上出现 "no such column" 错误插入。