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我正在与一个让我发疯的问题作斗争：我有一个非常简单的 ListView，它在一个设备上平滑滚动，而在另一个几乎 100% 相同的设备上非常笨拙。

在这里您可以找到 luggy 滚动的视频，在这里 您可以找到（几乎）平滑滚动的视频。

慢滚动发生在具有此规格的设备上，平滑滚动发生在具有此规格的设备上

这是我使用的非常基本的代码（显然使用 ViewHolder 模式），这怎么可能？请有人帮助我！！！

public DealerAdapter(Context context, int skinLayoutResourceId, ArrayList<Dealer> items) {
        super(context, skinLayoutResourceId, items);
        _items = items;
        mContext = context;
        layout = skinLayoutResourceId;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        DealerViewHolder holder = null;
        // reuse views
        if (convertView == null) {
            LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(layout, null);
            // configure view holder
            holder = new DealerViewHolder();
            holder.lblName = (TextView) convertView.findViewById(R.skinDealer.lblNameSurname);
            holder.lblSapCode = (TextView) convertView.findViewById(R.skinDealer.lblSapCode);
            holder.lblAddress = (TextView) convertView.findViewById(R.skinDealer.lblAddress);
            convertView.setTag(holder);
        } else
            holder = (DealerViewHolder) convertView.getTag();
        try {
            holder.lblName.setText(_items.get(position).getName());
            holder.lblCode.setText(_items.get(position).getCode());
            holder.lblAddress.setText(_items.get(position).getAddress());
        } catch (Exception e) {
            // TODO: handle exception
        }
        return convertView;
    }

    static class DealerViewHolder {
        TextView lblName;
        TextView lblAddress;
        TextView lblCode;
    }

编辑：

我在另一台三星设备 Galaxy Note 10.1 上测试了相同的代码，与具有平滑滚动和更强大硬件的操作系统版本相同，结果令人惊讶！ 这是行为，这是设备的规格。

有时android是一个真正的巨大问号！！！！

编辑2：

这是使用 android 4.2.2 在设备上执行滚动时的 logcat

01-27 10:34:59.994: V/AlarmManager(2371): waitForAlarm result :8
01-27 10:35:00.004: D/KeyguardClockWidgetService(4910): onReceive action=android.intent.action.TIME_TICK
01-27 10:35:00.004: V/AlarmManager(2371): ClockReceiver onReceive() ACTION_TIME_TICK
01-27 10:35:00.034: D/IconMerger(2561): overflowShown = false
01-27 10:35:00.034: D/IconMerger(2561): moreRequired = false
01-27 10:35:00.094: I/WAKELOCK_RELEASE(2371): TIMESTAMP=3927849415108, TAG=AlarmManager, TYPE=PARTIAL_WAKE_LOCK             , COUNT=0, PID=2371, UID=1000
01-27 10:35:00.474: I/InputReader(2371): Touch event's action is 0x0 (deviceType=0) [pCnt=1, s=0.146 ] when=3598409874000
01-27 10:35:00.474: I/InputDispatcher(2371): Delivering touch to: action: 0x0
01-27 10:35:00.494: I/ThermalZone(2371): TEMP 41000 newMaxSensorState 0
01-27 10:35:00.504: I/CustomFrequencyManager(4461): newFrequencyRequest  - mFrequency = 800000, mTimeoutMs = -1, mPkgName = LIST_SCROLL_BOOSTER@3
01-27 10:35:00.504: I/CustomFrequencyManager(4461): Boost Request from package = LIST_SCROLL_BOOSTER@3 frequency : 800000type = 6
01-27 10:35:00.504: I/CustomFrequencyManager(4461): !! pkgName = LIST_SCROLL_BOOSTER@3
01-27 10:35:00.504: I/CustomFrequencyManager(4461): Request from package name pkgName = LIST_SCROLL_BOOSTER@3
01-27 10:35:00.504: I/CustomFrequencyManager(4461): mContext is Not Null  mContext.pkgName = com.reply.fasttrack
01-27 10:35:00.504: I/CustomFrequencyManager(4461): mToken is Null....Creating New Binder!
01-27 10:35:00.504: I/CustomFrequencyManager(4461): CPUDVFSControlRequest : doFrequencyRequest::  = 800000 Timeout : -1
01-27 10:35:00.504: I/power(2371): *** acquire_dvfs_lock : lockType : 1  freq : 800000 
01-27 10:35:00.504: D/CustomFrequencyManagerService(2371): acquireDVFSLockLocked : type : DVFS_MIN_LIMIT  frequency : 800000  uid : 10169  pid : 4461  pkgName : LIST_SCROLL_BOOSTER@3
01-27 10:35:00.614: I/InputReader(2371): Touch event's action is 0x1 (deviceType=0) [pCnt=1, s=] when=3598555846000
01-27 10:35:00.614: I/InputDispatcher(2371): Delivering touch to: action: 0x1
01-27 10:35:01.984: I/Monitor(2371): SIOP:: Current AP = 365, CP = 0
01-27 10:35:03.354: D/BatteryService(2371): update start
01-27 10:35:03.354: D/BatteryService(2371): level:21, scale:100, status:3, health:2, present:true, voltage: 3614, temperature: 319, technology: Li-ion, AC powered:false, USB powered:true, Wireless powered:false, icon:17303346, invalid charger:0, online:4, charge type:1, current avg:-368
01-27 10:35:03.354: D/BatteryService(2371): Sending ACTION_BATTERY_CHANGED.
01-27 10:35:03.364: D/STATUSBAR-BatteryController(2561): onReceive() - ACTION_BATTERY_CHANGED
01-27 10:35:03.364: D/STATUSBAR-BatteryController(2561): onReceive() - BATTERY_STATUS_DISCHARGING: tw_stat_sys_battery_usb_not_charge
01-27 10:35:03.364: D/STATUSBAR-PhoneStatusBar(2561):  mBrightnessEnablebySettings = true mBrightnessEnablebyBattery = true mBrightnessEnablebyDisableFlag = true
01-27 10:35:03.514: I/power(2371): *** release_dvfs_lock : lockType : 1 
01-27 10:35:03.514: D/CustomFrequencyManagerService(2371): releaseDVFSLockLocked : Getting Lock type frm List : DVFS_MIN_LIMIT  frequency : 800000  uid : 10169  pid : 4461  tag : LIST_SCROLL_BOOSTER@3
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2 回答 2

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我看到的设备之间的唯一区别是 Android 版本。Android 4.4 引入了一些变化，以使整个系统更加流畅，即使在低内存设备中也是如此。

在这里你有更多的细节： https ://developer.android.com/about/versions/kitkat.html#svelte

它可能不是很有帮助，但如果版本是唯一的区别，它可能就是这样。

于 2015-01-26T18:25:04.820 回答
0

经过数周的调查，原因令人难以置信：问题是由布局根部的背景图像引起的，其中包含太大的列表视图（几乎 2MB）。虽然我知道使用大图像作为背景不是一个好习惯，但我真的不明白为什么在高性能设备上这会导致问题，而在性能较差的设备上一切都运行得很好！

顺便说一句，我希望这会帮助任何遇到我同样问题的人

于 2015-02-23T16:54:20.077 回答