java-为什么我的android活动执行得这么慢？

概述从第二次单击通知活动按钮起,程序立即开始运行缓慢.由于某种原因,此屏幕需要几分钟才能以非常小故障和抽出的方式向下滚动.我该怎么做才能加快并简化通知活动屏幕？NotificationActivity：publicclassNotificationActivityextendsBaseActivity{publicstaticfinalStringTAG

从第二次单击通知活动按钮起,程序立即开始运行缓慢.由于某种原因,此屏幕需要几分钟才能以非常小故障和抽出的方式向下滚动.我该怎么做才能加快并简化通知活动屏幕？

NotificationActivity：

public class NotificationActivity extends BaseActivity {public static final String TAG = LoginActivity.class.getSimplename();private NotificationAdapter notificationAdapter;private headerLayout headerLayout;private FooterLayout footerLayout;private SimpleGestureFilter detector;private ListVIEw mNotificationLv;@OverrIDeprotected voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.activity_notification);    mNotificationLv = (ListVIEw) findVIEwByID(R.ID.notification_lv);    mNotificationLv = (ListVIEw) findVIEwByID(R.ID.notification_lv);    notificationAdapter = new NotificationAdapter(this);    notificationAdapter.setList(AtlasApplication.lstNotificationModels);    mNotificationLv.setAdapter(notificationAdapter);    // Detect touched area    detector = new SimpleGestureFilter(this,this);}@OverrIDeprotected voID onResume() {    super.onResume();    List<NotificationModel> usermodelList = AtlasApplication.lstNotificationModels;    notificationAdapter = new NotificationAdapter(this);    notificationAdapter.setList(usermodelList);    mNotificationLv.setAdapter(notificationAdapter);}}

NotificationAdapter：

public class NotificationAdapter extends BaseAdapter{private List<NotificationModel> lstNotificationModels;private sqliteAdapter sqliteAdapter;private Context context;public NotificationAdapter(Context context) {    this.context = context; sqliteAdapter=new sqliteAdapter(context, this, new Dialog(context));}public voID setList(List<NotificationModel> genres) {    this.lstNotificationModels = genres;    notifyDataSetChanged();}private class VIEwHolder {    TextVIEw mNotifiactionTypeTv, mNotifiactionTextTv, mNotifiactionTimeTv;    linearLayout rowNotificationLl;}public voID setRead(int i){    sqliteAdapter.updateNotificationStatus(i, "read");    lstNotificationModels.get(i).setmNotificationStatus("read");}@OverrIDepublic VIEw getVIEw(int position, VIEw convertVIEw, VIEwGroup parent) {    VIEwHolder holder = null;    LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);    if (convertVIEw == null) {        convertVIEw = mInflater.inflate(R.layout.row_notification, null);        holder = new VIEwHolder();        holder.rowNotificationLl = (linearLayout) convertVIEw.findVIEwByID(R.ID.row_notification_ll);        holder.mNotifiactionTextTv = (TextVIEw) convertVIEw.findVIEwByID(R.ID.notification_text_tv);        holder.mNotifiactionTimeTv = (TextVIEw) convertVIEw.findVIEwByID(R.ID.notification_time_tv);        holder.mNotifiactionTypeTv = (TextVIEw) convertVIEw.findVIEwByID(R.ID.notification_type_atv);        convertVIEw.setTag(holder);    } else {        holder = (VIEwHolder) convertVIEw.getTag();    }    final NotificationModel notificationModel = lstNotificationModels.get(position);    final String newFullText = sqliteAdapter.getFullText(notificationModel.getmLawID());    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");    Date currentDate = new Date();    Date notificationDate = new Date();    String timeElapsed = "moments ago.";    try {        notificationDate = simpleDateFormat.parse(notificationModel.getmNotificationTime().trim());    } catch(ParseException e){    }    long millIElapsed = currentDate.getTime() - notificationDate.getTime() + 14400000;    if(millIElapsed>=60000){        long minutesElapsed = millIElapsed/60000;        timeElapsed = minutesElapsed + " minutes ago.";        if(minutesElapsed>=60){            long hoursElapsed = minutesElapsed/60;            timeElapsed = hoursElapsed + " hours ago.";            if(hoursElapsed>=24){                long daysElapsed = hoursElapsed/60;                timeElapsed = daysElapsed + " days ago.";                if(daysElapsed>=7){                    long weeksElapsed = daysElapsed/7;                    timeElapsed = hoursElapsed + " weeks ago.";                    if(weeksElapsed>=4){                        long monthsElapsed = weeksElapsed/4;                        timeElapsed = monthsElapsed + " months ago.";                        if(daysElapsed>=365){                            long yearsElapsed = daysElapsed/365;                            timeElapsed = yearsElapsed + " years ago.";                        }                    }                }            }        }    }    holder.mNotifiactionTextTv.setText(HTML.fromHTML(notificationModel.getmNotificationText().trim()));    holder.mNotifiactionTimeTv.setText(timeElapsed);    if (notificationModel.getmNotificationStatus().equalsIgnoreCase("unread")) {        convertVIEw.findVIEwByID(R.ID.unread_vw).setVisibility(VIEw.VISIBLE);        holder.rowNotificationLl.setBackgroundResource(R.color.black);    }    else {        convertVIEw.findVIEwByID(R.ID.unread_vw).setVisibility(VIEw.GONE);        holder.rowNotificationLl.setBackgroundResource(R.color.grad_light);    }    switch (notificationModel.getmNotificationType().tolowerCase()){        case "traffic":            holder.mNotifiactionTypeTv.setBackgroundResource(R.drawable.traffic_noti_bg);            holder.mNotifiactionTypeTv.setText("f");            holder.mNotifiactionTypeTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_TRAFFIC;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(0);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            holder.mNotifiactionTextTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_TRAFFIC;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(0);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                    catch(Exception e){                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            break;        case "law enforcement":            holder.mNotifiactionTypeTv.setBackgroundResource(R.drawable.enforcement_noti_bg);            holder.mNotifiactionTypeTv.setText("c");            holder.mNotifiactionTypeTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_ENFORCEMENT;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(1);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            holder.mNotifiactionTextTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_ENFORCEMENT;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(1);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                    catch(Exception e){                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            break;        case "alcohol":            holder.mNotifiactionTypeTv.setBackgroundResource(R.drawable.alcohal_noti_bg);            holder.mNotifiactionTypeTv.setText("a");            holder.mNotifiactionTypeTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_ALCOHol;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(2);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            holder.mNotifiactionTextTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_ALCOHol;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(2);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                    catch(Exception e){                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            break;        case "taxes":            holder.mNotifiactionTypeTv.setBackgroundResource(R.drawable.taxes_noti_bg);            holder.mNotifiactionTypeTv.setText("e");            holder.mNotifiactionTypeTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_TAXES;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(3);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            holder.mNotifiactionTextTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_TAXES;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(3);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            break;        case "guns":            holder.mNotifiactionTypeTv.setBackgroundResource(R.drawable.guns_noti_bg);            holder.mNotifiactionTypeTv.setText("b");            holder.mNotifiactionTypeTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_GUNS;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(4);                        setRead(notificationModel.getmNotificaticationID());                        AtlasApplication.lstLawsForLocation.get(1).setSelected(true);                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            holder.mNotifiactionTextTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_GUNS;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(4);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                    catch(Exception e){                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            break;        case "marijuana":            holder.mNotifiactionTypeTv.setBackgroundResource(R.drawable.marijuana_noti_bg);            holder.mNotifiactionTypeTv.setText("d");            holder.mNotifiactionTypeTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_MARIJUANA;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(5);                        setRead(notificationModel.getmNotificaticationID());                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            holder.mNotifiactionTextTv.setonClickListener(new OnClickListener() {                @OverrIDe                public voID onClick(VIEw vIEw) {                    try {                        AtlasApplication.MenuTitle = Constants.CAT_MARIJUANA;                        AtlasApplication.scategoryModel = AtlasApplication.lstcategoryModels.get(5);                        setRead(notificationModel.getmNotificaticationID());                        AtlasApplication.lstLawsForLocation.get(1).setSelected(true);                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    } catch (Exception e) {                        vIEw.getContext().startActivity(SubMenuActivity.getIntent(vIEw.getContext()));                    }                }            });            break;        default:            break;    }    FontLoader.setAtlasFont(holder.mNotifiactionTypeTv);    FontLoader.setRalewayRegularFont(holder.mNotifiactionTextTv, holder.mNotifiactionTimeTv);    holder.rowNotificationLl.setID(position);    holder.rowNotificationLl.setonClickListener(new OnClickListener() {        @OverrIDe        public voID onClick(VIEw v) {        }    });    return convertVIEw;}}

sqliteAdapter：

public class sqliteAdapter {    private static final int DATABASE_VERSION = 1;   private static String DB_PATH;//= Environment.getExternalStorageDirectory() + "/" + context.getPackagename() + "/";    private sqliteDatabase msqliteDatabase;    private Context mContext;    private Dialog mDialog;    private sqliteDbqueryListener sqliteDbqueryListener;    private ExceptionHandler exceptionHandler;    public sqliteAdapter(Context c, sqliteDbqueryListener Listener, Dialog dialog) {        mContext = c;        sqliteDbqueryListener = Listener;        exceptionHandler = new ExceptionHandler(mContext, "sqliteAdapter");        mDialog = dialog;        DB_PATH = Environment.getExternalStorageDirectory() + "/" + mContext.getPackagename() + "/";        //call it so db get copIEd from assets to sdcard        //call it so db get copIEd from assets to sdcard        openToRead();        close();    }public voID updateLaw(int lawID, String newSummary, String newFullText){    int tagID = getTagID(lawID);    String tagname = getTagname(tagID);    int categoryID = getcategoryID(tagID);    String categoryname = getcategoryname(categoryID);    String location;        location = getLocationname(getLocationID(lawID));        if (location.tolowerCase().equals(AtlasApplication.sHometownSelected.getLocationname().tolowerCase())) {            location = "your current state";        } else if (location.tolowerCase().equals(AtlasApplication.sHometownSelected.getLocationname().tolowerCase())) {            location = "your home state";        }    openToWrite();        ContentValues contentValues = new ContentValues();        contentValues.put(Constants.KEY_SUMMARY, newSummary);        if(newFullText!=null)            contentValues.put(Constants.KEY_FulL_TEXT, newFullText);        msqliteDatabase.update(Constants.table_LAW, contentValues, Constants.KEY_LAW_ID + "=" + lawID, null);    close();                insertNotification(lawID, categoryname, tagname + " has changed in " + location + ".");}public int getcategoryID(int tagID){    openToRead();    int categoryID = 0;    String query = "SELECT * from " + Constants.table_category_TAG;    Cursor cursor = msqliteDatabase.rawquery(query, null);       if (cursor.movetoFirst()) {            while (cursor.isAfterLast() == false) {                    if (cursor.getInt(cursor.getColumnIndex(Constants.KEY_TAG_ID)) == tagID) {                            int indexcategoryID = cursor.getColumnIndex(Constants.KEY_category_ID);                            categoryID = cursor.getInt(indexcategoryID);                    }                cursor.movetoNext();            }        }    close();    return categoryID;}public String getcategoryname(int categoryID){    String categoryname = "";    openToRead();    String query = "SELECT * from " + Constants.table_category;    Cursor cursor = msqliteDatabase.rawquery(query, null);        if (cursor.movetoFirst()) {            while (cursor.isAfterLast() == false) {            if (cursor.getInt(cursor.getColumnIndex(Constants.KEY_category_ID)) == categoryID) {                        int indexcategoryname = cursor.getColumnIndex(Constants.KEY_category_name);                        categoryname = cursor.getString(indexcategoryname);                }                cursor.movetoNext();            }        }    close();    return categoryname.tolowerCase();}public int getLocationID(int lawID){    openToRead();    String query = "SELECT * from " + Constants.table_LAW_LOCATION;    Cursor cursor = msqliteDatabase.rawquery(query, null);    int locationID = 0;    if (cursor.movetoFirst()) {        while (cursor.isAfterLast() == false) {            try {                if(cursor.getInt(cursor.getColumnIndex(Constants.KEY_LAW_ID)) == lawID) {                    int indexTagID = cursor.getColumnIndex(Constants.KEY_LOCATION_ID);                    locationID = cursor.getInt(indexTagID);                }            } catch (Exception e) {                exceptionHandler.alert(e, "getLocationID()");            }            cursor.movetoNext();        }    }    close();    return locationID;}public String getLocationname(int locationID){    openToRead();    String query = "SELECT * from " + Constants.table_LOCATION;    Cursor cursor = msqliteDatabase.rawquery(query, null);    String locationname = "";    if (cursor.movetoFirst()) {        while (cursor.isAfterLast() == false) {                if(cursor.getInt(cursor.getColumnIndex(Constants.KEY_LOCATION_ID)) == locationID) {                    int indexTagID = cursor.getColumnIndex(Constants.KEY_LOCATION_name);                    locationname = cursor.getString(indexTagID);                }            cursor.movetoNext();        }    }    close();    return locationname;}public int getTagID(int lawID){    openToRead();    String query = "SELECT * from " + Constants.table_LAW_TAG;    Cursor cursor = msqliteDatabase.rawquery(query, null);    int tagID = 0;    if (cursor.movetoFirst()) {        while (cursor.isAfterLast() == false) {            if(cursor.getInt(cursor.getColumnIndex(Constants.KEY_LAW_ID)) == lawID) {                    int indexTagID = cursor.getColumnIndex(Constants.KEY_TAG_ID);                    tagID = cursor.getInt(indexTagID);            cursor.movetoNext();        }    }    close();    return tagID;}public String getTagname(int tagID){    openToRead();    String tagname = "";    String query = "SELECT * from " + Constants.table_TAG;    Cursor cursor = msqliteDatabase.rawquery(query, null);    if(cursor.movetoFirst()){        while (cursor.isAfterLast() == false) {            try {                if(cursor.getInt(cursor.getColumnIndex(Constants.KEY_TAG_ID)) == tagID) {                    int indexTagname = cursor.getColumnIndex(Constants.KEY_TAG_name);                    tagname = cursor.getString(indexTagname);                }            } catch (Exception e) {                exceptionHandler.alert(e, "getTagname()");            }            cursor.movetoNext();        }    }    close();    return tagname;}public voID insertNotification(int lawID, String type, String text){    openToWrite();    try {        ContentValues contentValues = new ContentValues();        contentValues.put(Constants.KEY_LAW_ID, lawID);        contentValues.put(Constants.KEY_NOTIFICATION_TYPE, type);        contentValues.put(Constants.KEY_NOTIFICATION_TEXT, text);        contentValues.put(Constants.KEY_NOTIFICATION_STATUS, "unread");        msqliteDatabase.insert(Constants.table_NOTIFICATION, null, contentValues);    }    catch(Exception e){        exceptionHandler.alert(e, "insertNotification()");    }    close();}public voID dropNotifications(){    openToWrite();    try{        msqliteDatabase.execsql("DROP table IF EXISTS notification");    }    catch(Exception e){    }    close();}public voID updateNotificationStatus(int notificationID, String status){    openToWrite();    try {        ContentValues contentValues = new ContentValues();        contentValues.put(Constants.KEY_NOTIFICATION_STATUS, status);        msqliteDatabase.update(Constants.table_NOTIFICATION, contentValues, Constants.KEY_NOTIFICATION_ID + "=" + notificationID, null);    }    catch(Exception e){        exceptionHandler.alert(e, "updateNotificationStatus()");    }    close();}public String getNotificationStatus(int notificationID){    openToRead();    String query = "SELECT * FROM " + Constants.table_NOTIFICATION + " WHERE " + Constants.KEY_NOTIFICATION_ID + "=" + notificationID;    Cursor cursor = msqliteDatabase.rawquery(query, null);    String notificationStatus = "";    if(cursor.movetoFirst()){        while (cursor.isAfterLast() == false) {            try {                if(cursor.getInt(cursor.getColumnIndex(Constants.KEY_NOTIFICATION_ID)) == notificationID) {                    int indexNotificationStatus = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_STATUS);                    notificationStatus = cursor.getString(indexNotificationStatus);                }            } catch (Exception e) {                exceptionHandler.alert(e, "getNotificationStatus()");            }            cursor.movetoNext();        }    }    close();    return notificationStatus;}public int getNotificationID(int lawID, String time){    openToRead();    int notificationID = 0;        String query = "SELECT * FROM " + Constants.table_NOTIFICATION +                " WHERE " + Constants.KEY_NOTIFICATION_TIME + " = " + time;        Cursor cursor = msqliteDatabase.rawquery(query, null);        if (cursor.movetoFirst()) {            while (cursor.isAfterLast() == false) {                int indexNotificationID = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_ID);                notificationID = cursor.getInt(indexNotificationID);            }    }    close();    return notificationID;}public List<NotificationModel> getNotificationList(){    List<NotificationModel> lstNotifications = new ArrayList<NotificationModel>();    openToRead();    String query = "SELECT * from " + Constants.table_NOTIFICATION;    Cursor cursor = msqliteDatabase.rawquery(query, null);    if (cursor.movetoFirst()) {        while (cursor.isAfterLast() == false) {            try {                int indexNotificationID = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_ID);                int indexLawID = cursor.getColumnIndex(Constants.KEY_LAW_ID);                int indexNotificationTime = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_TIME);                int indexNotificationType = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_TYPE);                int indexNotificationText = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_TEXT);                int indexNotificationStatus = cursor.getColumnIndex(Constants.KEY_NOTIFICATION_STATUS);                int notificationID = cursor.getInt(indexNotificationID);                int lawID = indexLawID;                String notificationTime = cursor.getString(indexNotificationTime);                String notificationType = cursor.getString(indexNotificationType);                String notificationText = cursor.getString(indexNotificationText);                String notificationStatus = cursor.getString(indexNotificationStatus);                lstNotifications.add(new NotificationModel(notificationID, lawID, notificationType, notificationText, notificationTime, notificationStatus));            } catch (Exception e) {                exceptionHandler.alert(e, "getNotificationList()");            }            cursor.movetoNext();        }    }    close();    Collections.reverse(lstNotifications);    return lstNotifications;}

}

主要活动：

sqliteAdapter.updateLaw(962, "test", "test");

解决方法:

您描述的问题很难在此代码中检测到,但以下是您应考虑的注释/最佳实践列表：

>您应该始终在辅助线程而不是主线程上执行数据库查询(尝试AsyncTask).
>您有一个SimpleGestureFilter,我无法说出它的用途或作用.如果那里有一些丑陋的逻辑,则可能会影响滚动.
>在getVIEw()方法中创建了大量的LayoutInflater变量,这很糟糕.将其设为全局变量,然后在适配器的构造函数中对其进行初始化.您是否知道滚动时会调用getVIEw()方法多少次？将日志放在那里并分析:).
>绝对不将实例保存到适配器中的sqliteAdapter对象.在您的活动中执行此 *** 作,并在需要时更新适配器.适配器应该始终是数据的表示形式,不要具有逻辑或其他任何含义.
>不确定FontLoader的功能,但是如果您每次调用getVIEw()时从资产中读取一种字体,那么就会遇到麻烦.尝试尽可能少地加载字体,因为这是一项繁重的 *** 作.
>切勿捕获一般异常.尝试着重于特定的.

总结

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