Android酱油笔记之关于java.lang.IllegalArgumentException: contains a path separator的问题

该问题主要出现于Android2.2版本以前。

我们可以借助下面这个类来解决这个低版本问题。

class DatabaseContext extends ContextWrapper {

private static final String DEBUG_CONTEXT = "DatabaseContext";

public DatabaseContext(Context base) {
    super(base);
}

@Override
public File getDatabasePath(String name) 
{
    File sdcard = Environment.getExternalStorageDirectory();    
    String dbfile = sdcard.getAbsolutePath() + File.separator+ "databases" + File.separator + name;
    if (!dbfile.endsWith(".db"))
    {
        dbfile += ".db" ;
    }

    File result = new File(dbfile);

    if (!result.getParentFile().exists())
    {
        result.getParentFile().mkdirs();
    }

    if (Log.isLoggable(DEBUG_CONTEXT, Log.WARN))
    {
        Log.w(DEBUG_CONTEXT,
                "getDatabasePath(" + name + ") = " + result.getAbsolutePath());
    }

    return result;
}

@Override
public SQLiteDatabase openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory) 
{
    SQLiteDatabase result = SQLiteDatabase.openOrCreateDatabase(getDatabasePath(name), null);
    // SQLiteDatabase result = super.openOrCreateDatabase(name, mode, factory);
    if (Log.isLoggable(DEBUG_CONTEXT, Log.WARN))
    {
        Log.w(DEBUG_CONTEXT,
                "openOrCreateDatabase(" + name + ",,) = " + result.getPath());
    }
    return result;
}
}

修改SQLiteOpenHelper

public class DatabaseHelper extends SQLiteOpenHelper {

DatabaseHelper(final Context context, String databaseName) 
    {
    	super(new DatabaseContext(context), databaseName, null, DATABASE_VERSION);
    }
}

补充，关于ContextWrapper和Context的关系

参考： http://stackoverflow.com/questions/5332328/sqliteopenhelper-problem-with-fully-qualified-db-path-name