解決方法1:
あなたは、データベースに関するいくつかの情報を見ることがadb shell dumpsys dbinfo -v
コマンドを使用することができます。私の場合は
は、私が二度強制的に同じレコードを挿入する小さな例を作成しましたSQLiteConstraintException
:これは私のネクサス4でadb shell dumpsys dbinfo -v
コマンドの出力(私はわからないが、
MyDB db = new MyDB(this);
// Insert the same record twice to force a SQLiteConstraintException
db.insertIntoMyTable("1","MyName");
db.insertIntoMyTable("1","MyName");
ですが、私は、出力情報)はデバイス間で異なることができると思います。
Connection pool for /data/data/com.your.package.name/databases/MyDB:
Open: true
Max connections: 1
Available primary connection:
Connection #0:
connectionPtr: 0xffffffffb883aaf0
isPrimaryConnection: true
onlyAllowReadOnlyOperations: false
Most recently executed operations:
0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)"
1: [2015-11-13 17:59:16.227] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)"
2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"]
3: [2015-11-13 17:59:16.209] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)"
4: [2015-11-13 17:59:16.208] executeForLong took 1ms - succeeded, sql="PRAGMA user_version;"
5: [2015-11-13 17:59:16.208] prepare took 0ms - succeeded, sql="PRAGMA user_version;"
6: [2015-11-13 17:59:16.208] executeForString took 0ms - succeeded, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1"
7: [2015-11-13 17:59:16.207] execute took 1ms - succeeded, sql="CREATE TABLE IF NOT EXISTS android_metadata (locale TEXT)"
8: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint=100"
9: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint"
10: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit=524288"
11: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit"
12: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA synchronous"
13: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA journal_mode=PERSIST"
14: [2015-11-13 17:59:16.205] executeForString took 1ms - succeeded, sql="PRAGMA journal_mode"
15: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA foreign_keys"
16: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA page_size"
Prepared statement cache:
0: statementPtr=0xffffffffb8839558, numParameters=0, type=1, readOnly=true, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1"
Available non-primary connections:
<none>
Acquired connections:
<none>
Connection waiters:
<none>
は、私は、以下の情報を取得Most recently executed operations:
で、出力を分析する()1つのレコードが正常に挿入され、別のに失敗しました:
0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)"
2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"]
解決方法2:
このソリューションは少しトリッキーですが、Javaコードを経由して同様の情報を取得するためにandroid.database.sqlite.SQLiteDebug
クラスを使用することができます。
thisを見ると、このクラスは@hide
とマークされています。つまり、SQLiteDebugクラスはAPIドキュメントから除外されていますが、リフレクションによってアクセスできます。私が使用してこの場合
MyDB db = new MyDB(this);
// Insert the same record twice to force a SQLiteConstraintException
db.insertIntoMyTable("1","MyName");
db.insertIntoMyTable("1","MyName");
try {
Printer p = new LogPrinter(Log.ERROR, "DB");
Class<?> c = Class.forName("android.database.sqlite.SQLiteDebug");
Method method = c.getMethod("dump", new Class[]{Printer.class, String[].class});
method.invoke(null, p, new String[]{"-v"});
}
catch (Exception e) {
Log.e("MyTag", e.getMessage());
}
:ソリューションを説明するため
// The messages will be printed as Log.ERROR using the tag "DB"
Printer p = new LogPrinter(Log.ERROR, "DB");
// We will invoke the "dump" method of the "android.database.sqlite.SQLiteDebug" class
// We eill use the "-v" parameter because we want the output to be verbose
Class<?> c = Class.forName("android.database.sqlite.SQLiteDebug");
Method method = c.getMethod("dump", new Class[]{Printer.class, String[].class});
method.invoke(null, p, new String[]{"-v"});
簡単な例:
ので、SQLiteのデータベースのためのデバッグ情報を印刷するには、次のコードを使用することができますデバッグ情報をlogcatにダンプするにはLogPrinter
が必要ですが、独自のPrinter
実装を使用することができます。私のネクサス4で
は、logcatは(私はわからないが、私は、出力情報がデバイス間で異なることができると思います)、次のようになります
:
E/SQLiteLog(22296): (1555) abort at 10 in [INSERT INTO MyTable(name,_id) VALUES (?,?)]: UNIQUE constraint failed: MyTable._id
E/SQLiteDatabase(22296): Error inserting name=MyName _id=1
E/SQLiteDatabase(22296): android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: MyTable._id (code 1555)
E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method)
E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:782)
E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788)
E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86)
E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1471)
E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1341)
E/SQLiteDatabase(22296): at com.example.antonio.prueba3.MyDB.insertIntoMyTable(MyDB.java:32)
E/SQLiteDatabase(22296): at com.example.antonio.prueba3.MainActivity.onCreate(MainActivity.java:24)
E/SQLiteDatabase(22296): at android.app.Activity.performCreate(Activity.java:5990)
E/SQLiteDatabase(22296): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
E/SQLiteDatabase(22296): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
E/SQLiteDatabase(22296): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
E/SQLiteDatabase(22296): at android.app.ActivityThread.access$800(ActivityThread.java:151)
E/SQLiteDatabase(22296): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
E/SQLiteDatabase(22296): at android.os.Handler.dispatchMessage(Handler.java:102)
E/SQLiteDatabase(22296): at android.os.Looper.loop(Looper.java:135)
E/SQLiteDatabase(22296): at android.app.ActivityThread.main(ActivityThread.java:5254)
E/SQLiteDatabase(22296): at java.lang.reflect.Method.invoke(Native Method)
E/SQLiteDatabase(22296): at java.lang.reflect.Method.invoke(Method.java:372)
E/SQLiteDatabase(22296): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
E/SQLiteDatabase(22296): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
E/DB (22296): Connection pool for /data/data/com.example.antonio.prueba3/databases/MyDB:
E/DB (22296): Open: true
E/DB (22296): Max connections: 1
E/DB (22296): Available primary connection:
E/DB (22296): Connection #0:
E/DB (22296): connectionPtr: 0xffffffffb883aaf0
E/DB (22296): isPrimaryConnection: true
E/DB (22296): onlyAllowReadOnlyOperations: false
E/DB (22296): Most recently executed operations:
E/DB (22296): 0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)"
E/DB (22296): 1: [2015-11-13 17:59:16.227] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)"
E/DB (22296): 2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"]
E/DB (22296): 3: [2015-11-13 17:59:16.209] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)"
E/DB (22296): 4: [2015-11-13 17:59:16.208] executeForLong took 1ms - succeeded, sql="PRAGMA user_version;"
E/DB (22296): 5: [2015-11-13 17:59:16.208] prepare took 0ms - succeeded, sql="PRAGMA user_version;"
E/DB (22296): 6: [2015-11-13 17:59:16.208] executeForString took 0ms - succeeded, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1"
E/DB (22296): 7: [2015-11-13 17:59:16.207] execute took 1ms - succeeded, sql="CREATE TABLE IF NOT EXISTS android_metadata (locale TEXT)"
E/DB (22296): 8: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint=100"
E/DB (22296): 9: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint"
E/DB (22296): 10: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit=524288"
E/DB (22296): 11: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit"
E/DB (22296): 12: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA synchronous"
E/DB (22296): 13: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA journal_mode=PERSIST"
E/DB (22296): 14: [2015-11-13 17:59:16.205] executeForString took 1ms - succeeded, sql="PRAGMA journal_mode"
E/DB (22296): 15: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA foreign_keys"
E/DB (22296): 16: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA page_size"
E/DB (22296): Prepared statement cache:
E/DB (22296): 0: statementPtr=0xffffffffb8839558, numParameters=0, type=1, readOnly=true, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1"
E/DB (22296): Available non-primary connections:
E/DB (22296): <none>
E/DB (22296): Acquired connections:
E/DB (22296): <none>
E/DB (22296): Connection waiters:
E/DB (22296): <none>
出力を分析し、私はSQLiteConstraintException
を取得します
E/SQLiteDatabase(22296): android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: MyTable._id (code 1555)
そして は、私は、以下の情報を取得Most recently executed operations:
に(1つのレコードが正常に挿入され、別のに失敗しました):
E/DB (22296): 0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)"
E/DB (22296): 2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"]
希望します。
あなたのlogcatの多くを投稿することができ –
私は自分自身の内部コードの上にlogcatのすべてを追加するように更新してください。 – ProjectJourneyman
おそらくsqlも必要です。別のテーブルの参照を持つテーブルからレコードを削除しようとしている可能性があります(またはヌルIDでレコードを削除しようとしていますか?) –