安卓SQLiteConstraintException：错误code 19：约束失败 [英] Android SQLiteConstraintException: error code 19: constraint failed

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问题描述

我已经看到了有关此异常的其他问题，但他们都似乎与该行的主键已经存在指定的解决方案来解决。这似乎并没有对我的情况。我曾尝试更换所有的单引号在我的琴弦用双引号，但出现了同样的问题。

I've seen other questions about this exception, but all of them seem to be resolved with the solution that a row with the primary key specified already exists. This doesn't seem to be the case for me. I have tried replacing all single quotes in my strings with double quotes, but the same problem occurs.

我想插入一行到我已经通过执行以下操作创建的SQLite数据库的设置表：

I'm trying to insert a row into the Settings table of the SQLite database I've created by doing the following:

db.execSQL("DROP TABLE IF EXISTS "+Settings.SETTINGS_TABLE_NAME + ";");
db.execSQL(CREATE_MEDIA_TABLE);
db.execSQL(CREATE_SETTINGS_TABLE);
Cursor c = getAllSettings();
//If there isn't already a settings row, create a row full of defaults
if(c.getCount()==0){
    ContentValues cv  = new ContentValues();
    cv.put(Settings.SETTING_UNIQUE_ID, "'"+Settings.uniqueID+"'");          
    cv.put(Settings.SETTING_DEVICE_ID, Settings.SETTING_DEVICE_ID_DEFAULT);
    cv.put(Settings.SETTING_CONNECTION_PREFERENCE, Settings.SETTING_CONNECTION_PREFERENCE_DEFAULT);
    cv.put(Settings.SETTING_AD_HOC_ENABLED, Settings.SETTING_AD_HOC_ENABLED_DEFAULT);
    cv.put(Settings.SETTING_SERVER_ADDRESS, Settings.SETTING_SERVER_ADDRESS_DEFAULT);
    cv.put(Settings.SETTING_RECORDING_MODE, Settings.SETTING_RECORDING_MODE_DEFAULT);
    cv.put(Settings.SETTING_PREVIEW_ENABLED, Settings.SETTING_PREVIEW_ENABLED_DEFAULT);
    cv.put(Settings.SETTING_PICTURE_RESOLUTION_X, Settings.SETTING_PICTURE_RESOLUTION_X_DEFAULT);
    cv.put(Settings.SETTING_PICTURE_RESOLUTION_Y, Settings.SETTING_PICTURE_RESOLUTION_Y_DEFAULT);
    cv.put(Settings.SETTING_VIDEO_RESOLUTION_X, Settings.SETTING_VIDEO_RESOLUTION_X_DEFAULT);
    cv.put(Settings.SETTING_VIDEO_RESOLUTION_Y, Settings.SETTING_VIDEO_RESOLUTION_Y_DEFAULT);
    cv.put(Settings.SETTING_VIDEO_FPS, Settings.SETTING_VIDEO_FPS_DEFAULT);
    cv.put(Settings.SETTING_AUDIO_BITRATE_KBPS, Settings.SETTING_AUDIO_BITRATE_KBPS_DEFAULT);
    cv.put(Settings.SETTING_STORE_TO_SD, Settings.SETTING_STORE_TO_SD_DEFAULT);
    cv.put(Settings.SETTING_STORAGE_LIMIT_MB, Settings.SETTING_STORAGE_LIMIT_MB_DEFAULT);

    this.db.insert(Settings.SETTINGS_TABLE_NAME, null, cv);
}

该CREATE_SETTINGS_TABLE字符串定义如下：

The CREATE_SETTINGS_TABLE string is defined as the following:

private static String CREATE_SETTINGS_TABLE = "CREATE TABLE IF NOT EXISTS " + Settings.SETTINGS_TABLE_NAME + "("
+ Settings.SETTING_UNIQUE_ID + " TEXT NOT NULL PRIMARY KEY, "
+ Settings.SETTING_DEVICE_ID + " TEXT NOT NULL , "
+ Settings.SETTING_CONNECTION_PREFERENCE + " TEXT NOT NULL CHECK("+Settings.SETTING_CONNECTION_PREFERENCE+" IN("+Settings.SETTING_CONNECTION_PREFERENCE_ALLOWED+")), "
+ Settings.SETTING_AD_HOC_ENABLED + " TEXT NOT NULL CHECK("+Settings.SETTING_AD_HOC_ENABLED+" IN("+Settings.SETTING_AD_HOC_ENABLED_ALLOWED+")), "
+ Settings.SETTING_SERVER_ADDRESS + " TEXT NOT NULL, "
+ Settings.SETTING_RECORDING_MODE + " TEXT NOT NULL CHECK("+Settings.SETTING_RECORDING_MODE+" IN("+Settings.SETTING_RECORDING_MODE_ALLOWED+")), "
+ Settings.SETTING_PREVIEW_ENABLED + " TEXT NOT NULL CHECK("+Settings.SETTING_PREVIEW_ENABLED+" IN("+Settings.SETTING_PREVIEW_ENABLED_ALLOWED+")), "
+ Settings.SETTING_PICTURE_RESOLUTION_X + " TEXT NOT NULL, "
+ Settings.SETTING_PICTURE_RESOLUTION_Y + " TEXT NOT NULL, "
+ Settings.SETTING_VIDEO_RESOLUTION_X + " TEXT NOT NULL, "
+ Settings.SETTING_VIDEO_RESOLUTION_Y + " TEXT NOT NULL, "
+ Settings.SETTING_VIDEO_FPS + " TEXT NOT NULL, "
+ Settings.SETTING_AUDIO_BITRATE_KBPS + " TEXT NOT NULL, "
+ Settings.SETTING_STORE_TO_SD + " TEXT NOT NULL CHECK("+Settings.SETTING_STORE_TO_SD+" IN("+Settings.SETTING_STORE_TO_SD_ALLOWED+")), "
+ Settings.SETTING_STORAGE_LIMIT_MB + " TEXT NOT NULL )";

然而，当我执行我的插入，我总是得到：

However, when I execute my insert, I always get:

03-19 19:37:36.974: ERROR/Database(386): Error inserting server_address='0.0.0.0' storage_limit='-1' connection='none' preview_enabled='0' sd_enabled='1' video_fps='15' audio_bitrate='96' device_id='-1' recording_mode='none' picture_resolution_x='-1' picture_resolution_y='-1' unique_id='000000000000000' adhoc_enable='0' video_resolution_x='320' video_resolution_y='240'
03-19 19:45:34.284: ERROR/Database(446): android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed

看起来好像我在插入的所有列不为空。该行的主键必须是唯一的，因为它是在表中唯一的一行。所以，我唯一能想到的是我的CHECK条件都不是真的。下面是我使用了predefined字符串：

It seems as if all the columns in my insert are not null. The row's primary key HAS to be unique, because it's the only row in the table. Therefore, the only thing I can think of is my CHECK conditions aren't true. Here are the predefined strings I'm using:

public static final String SETTING_UNIQUE_ID = "unique_id";

public static final String SETTING_DEVICE_ID = "device_id";
public static final String SETTING_DEVICE_ID_DEFAULT = "'-1'";

public static final String SETTING_CONNECTION_PREFERENCE = "connection";
public static final String SETTING_CONNECTION_PREFERENCE_3G = "'3g'";
public static final String SETTING_CONNECTION_PREFERENCE_WIFI = "'wifi'";
public static final String SETTING_CONNECTION_PREFERENCE_NONE = "'none'";
public static final String SETTING_CONNECTION_PREFERENCE_ALLOWED = SETTING_CONNECTION_PREFERENCE_3G+","+SETTING_CONNECTION_PREFERENCE_WIFI+","+SETTING_CONNECTION_PREFERENCE_NONE;
public static final String SETTING_CONNECTION_PREFERENCE_DEFAULT = SETTING_CONNECTION_PREFERENCE_NONE;

public static final String SETTING_AD_HOC_ENABLED = "adhoc_enable";
public static final String SETTING_AD_HOC_ENABLED_ALLOWED = TRUE+","+FALSE;
public static final String SETTING_AD_HOC_ENABLED_DEFAULT = FALSE;

public static final String SETTING_SERVER_ADDRESS = "server_address";
public static final String SETTING_SERVER_ADDRESS_DEFAULT = "'0.0.0.0'";

public static final String SETTING_RECORDING_MODE = "recording_mode";
public static final String SETTING_RECORDING_MODE_VIDEO = "'video'";
public static final String SETTING_RECORDING_MODE_AUDIO = "'audio'";
public static final String SETTING_RECORDING_MODE_PICTURE = "'picture'";
public static final String SETTING_RECORDING_MODE_NONE = "'none'";
public static final String SETTING_RECORDING_MODE_ALLOWED = SETTING_RECORDING_MODE_VIDEO+","+SETTING_RECORDING_MODE_AUDIO+","+SETTING_RECORDING_MODE_PICTURE+","+SETTING_RECORDING_MODE_NONE;
public static final String SETTING_RECORDING_MODE_DEFAULT = SETTING_RECORDING_MODE_NONE;

public static final String SETTING_PREVIEW_ENABLED = "preview_enabled";
public static final String SETTING_PREVIEW_ENABLED_ALLOWED = TRUE+","+FALSE;
public static final String SETTING_PREVIEW_ENABLED_DEFAULT = FALSE;

public static final String SETTING_PICTURE_RESOLUTION_X = "picture_resolution_x";
public static final String SETTING_PICTURE_RESOLUTION_X_DEFAULT = "'-1'";

public static final String SETTING_PICTURE_RESOLUTION_Y = "picture_resolution_y";
public static final String SETTING_PICTURE_RESOLUTION_Y_DEFAULT = "'-1'";

public static final String SETTING_VIDEO_RESOLUTION_X = "video_resolution_x";
public static final String SETTING_VIDEO_RESOLUTION_X_DEFAULT = "'320'";

public static final String SETTING_VIDEO_RESOLUTION_Y = "video_resolution_y";
public static final String SETTING_VIDEO_RESOLUTION_Y_DEFAULT = "'240'";

public static final String SETTING_VIDEO_FPS = "video_fps";
public static final String SETTING_VIDEO_FPS_DEFAULT = "'15'";

public static final String SETTING_AUDIO_BITRATE_KBPS = "audio_bitrate";
public static final String SETTING_AUDIO_BITRATE_KBPS_DEFAULT = "'96'";

public static final String SETTING_STORE_TO_SD = "sd_enabled";
public static final String SETTING_STORE_TO_SD_ALLOWED = TRUE+","+FALSE;
public static final String SETTING_STORE_TO_SD_DEFAULT = TRUE;

public static final String SETTING_STORAGE_LIMIT_MB = "storage_limit";
public static final String SETTING_STORAGE_LIMIT_MB_DEFAULT = "'-1'";

public static final String SETTING_CLIP_LENGTH_SECONDS = "clip_length";
public static final String SETTING_CLIP_LENGTH_SECONDS_DEFAULT = "'300'";

有谁看看有什么可以怎么回事？我难倒。先谢谢了。

Does anyone see what could be going on? I'm stumped. Thanks in advance.

推荐答案

看来，Android的认沽（字符串，字符串）方法必须已经追加给你你的价值字符串加上引号......只要我把手工报价我已经进入我周围的字串值了（但保留他们在允许）的字符串我经过检查一下，问题解决了。

It seems that the android put(string,string) method must already append quotes around your value string for you... as soon as I took the manual quotes I had been entering around my value strings out (but kept them in the "ALLOWED") strings I was passing to CHECK, the problem was solved.

这篇关于安卓SQLiteConstraintException：错误code 19：约束失败的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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