我制作的应用程序从另一个应用程序复制db文件，然后编辑数据库。
当我尝试打开de SQLite db时出现错误：
android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
尝试了我在INTERNET上看到的很多不同的方法，没有任何作用。
这是我的代码：
public class FirstRunService extends IntentService{
/**
* Creates an IntentService. Invoked by your subclass's constructor.
*
* Service Used to name the worker thread, important only for debugging.
*/
public FirstRunService() {
super("Service");
}
String filesdir;
SharedPreferences sp;
@Override
protected void onHandleIntent(Intent intent) {
//Cargo SharedPreferences
sp = this.getSharedPreferences("FirstRun", Context.MODE_PRIVATE);
//Asigno filesdir
filesdir = intent.getStringExtra("filesdir");
//Subo XX
Boolean XX = sp.getBoolean("XX",false);
if(!XX) {
uploadxxs(intent);
}
}
protected void uploadXX (Intent intent){
//Preparo
SQLiteDatabase db;
myFTP myftp = new myFTP();
FTPClient client;
//Copio la Base de datos
RootTools.deleteFileOrDirectory(filesdir + "/XX.db", true);
RootTools.copyFile("/data/data/com.XX/databases/XX.db", filesdir+"/xx.db",true,false);
try {
RootTools.getShell(true).add(cmd);
} catch (TimeoutException e) {
e.printStackTrace();
Log.e("Root XX.db","Fallo");
FirstRunAlarm.completeWakefulIntent(intent);
stopService(intent);
} catch (RootDeniedException e) {
e.printStackTrace();
Log.e("Root XX.db","Fallo");
FirstRunAlarm.completeWakefulIntent(intent);
stopService(intent);
} catch (IOException e) {
e.printStackTrace();
Log.e("Root XX.db","Fallo");
FirstRunAlarm.completeWakefulIntent(intent);
stopService(intent);
}
//Edito db
//Edito db
File file = new File(filesdir+"/wa.db");
if (file.exists()){
Log.e("File","Existe");
db = SQLiteDatabase.openDatabase(filesdir+"/wa.db", null,SQLiteDatabase.OPEN_READWRITE);//Error in this line
}else{
db = null;
Log.e("File","No Existe");
}
db.execSQL("DROP TABLE android_metadata;");
logcat的：
12-17 22:38:17.401 15227-15242/com.lstupenengo.primeraapp E/File﹕ Existe
12-17 22:38:17.402 3076-3366/com.lstupenengo.primeraapp E/SQLiteLog﹕ (14) cannot open file at line 30192 of [00bb9c9ce4]
12-17 22:38:17.402 3076-3366/com.lstupenengo.primeraapp E/SQLiteLog﹕ (14) os_unix.c:30192: (13) open(//data/data/com.lstupenengo.primeraapp/files/XX.db) -
12-17 22:38:17.412 3076-3366/com.lstupenengo.primeraapp E/SQLiteDatabase﹕ Failed to open database 'data/data/com.lstupenengo.primeraapp/files/XX.db'.
android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:209)
at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:193)
at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:804)
at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:789)
at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:669)
at com.lstupenengo.primeraapp.FirstRunService.uploadXX(FirstRunService.java:105)
at com.lstupenengo.primeraapp.FirstRunService.onHandleIntent(FirstRunService.java:49)
at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:212)
at android.os.HandlerThread.run(HandlerThread.java:61)
12-17 22:38:17.412 3076-3366/com.lstupenengo.primeraapp W/dalvikvm﹕ threadid=11: thread exiting with uncaught exception (group=0x41648d88)
12-17 22:38:17.422 3076-3366/com.lstupenengo.primeraapp E/AndroidRuntime﹕ FATAL EXCEPTION: IntentService[Service]
Process: com.lstupenengo.primeraapp, PID: 3076
android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:209)
at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:193)
at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:804)
at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:789)
at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:669)
at com.lstupenengo.primeraapp.FirstRunService.uploadXX(FirstRunService.java:105)
at com.lstupenengo.primeraapp.FirstRunService.onHandleIntent(FirstRunService.java:49)
at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:212)
at android.os.HandlerThread.run(HandlerThread.java:61)
清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.lstupenengo.primeraapp" >
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_SUPERUSER"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".FirstRunAlarm"/>
<service android:name=".FirstRunService"/>
</application>
</manifest>
答案 0 :(得分：2)
首先检查是否存在数据库文件：
File file = new File(myPath);
if (file.exists() && !file.isDirectory())
答案 1 :(得分：2)
通过创建一个类来解决，然后直接从服务中调用该类。
类
public class xxHandler extends SQLiteOpenHelper {
Context context;
SQLiteDatabase xxdb;
public wadbHandler(Context context1) {
super(context1,"xx.db", null, 1);
context = context1;
}
// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
public void accion(SQLiteDatabase db){
wadb = SQLiteDatabase.openDatabase(context.getFilesDir()+"/xx.db", null,
SQLiteDatabase.OPEN_READWRITE);
wadb.execSQL("SELECT * FROM table;")
}
答案 2 :(得分：0)
在OpenDatabase之前添加：
file.setWritable(true);