Question

我正在开发一个简单的高尔夫计分应用程序，作为针对Android设备的学习练习。输入孔的分数后，我想在主显示屏上以弹出式窗口的形式显示进度分数，该主显示屏在recyclerview中显示每个孔的结果。回收器视图中的数据将按预期更新，但是，当弹出窗口显示时，总数落后一个洞。似乎在对数据库中的总和进行查询之前，已经完成了对具有新分数的数据库更新。

我已经阅读了有关Android开发人员的部分内容，并广泛搜索了类似的问题，并完成了许多教程，但似乎没有一种适合这种情况。我已经看到一个建议，将查询作为事务运行可能会有所帮助，但是我的努力没有任何作用。

在Dao中，存在以下几种查询类型

@Transaction
    @Query("SELECT SUM(strokes) AS frontstrokes FROM score_table WHERE hole <= 9")
    LiveData<Integer> getStrokesFront();

在ViewModel中，相应的代码为

public LiveData<Integer> getStrokesFront(){return strokesFront;}

存储库包含

public LiveData<Integer> getStrokesFront() {
        return strokesFront;
    }

在MainActivity的onCreate内

scoringViewModel.getStrokesFront().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                frontstrokes = integer;
            }
        });

在onActivityResult内部，我们（从得分输入活动返回后）

 scoringViewModel.update(scoring);

            Toast.makeText(this, "Score added", Toast.LENGTH_LONG).show();

            loadData();

            showProgress();

在showProgress中，我们有

LayoutInflater inflater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View layout = inflater.inflate(R.layout.scoring_header, null);
        ((TextView) layout.findViewById(R.id.comp_name)).setText(comp);
        ((TextView) layout.findViewById(R.id.strokes_value)).setText(String.format("%d", frontstrokes));

我认为这是“定时”的原因是，如果我返回得分输入活动并且不进行任何更改，但再次按下保存，则总计更新现在是正确的。

以下内容确实出现在Logcat中

2019-06-05 14:30:13.906 31492-31492/org.ivanhoegc.ivanhoegolfscoringapp E/WindowManager: android.view.WindowLeaked: Activity org.ivanhoegc.ivanhoegolfscoringapp.MainActivity has leaked window android.widget.PopupWindow$PopupDecorView{3e7185f V.E...... R....... 0,0-800,570} that was originally added here
        at android.view.ViewRootImpl.<init>(ViewRootImpl.java:627)
        at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:377)
        at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:95)
        at android.widget.PopupWindow.invokePopup(PopupWindow.java:1573)
        at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1339)
        at android.widget.PopupWindow.showAtLocation(PopupWindow.java:1305)
        at org.ivanhoegc.ivanhoegolfscoringapp.MainActivity$override.showProgress(MainActivity.java:297)
        at org.ivanhoegc.ivanhoegolfscoringapp.MainActivity$override.onActivityResult(MainActivity.java:208)
        at org.ivanhoegc.ivanhoegolfscoringapp.MainActivity$override.access$dispatch(Unknown Source:92)
        at org.ivanhoegc.ivanhoegolfscoringapp.MainActivity.onActivityResult(Unknown Source:39)
        at android.app.Activity.dispatchActivityResult(Activity.java:8006)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4638)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4687)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1935)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7116)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:925)

编辑：我一直在做一些调试工作。

这是我的弹出窗口的代码。

private void showProgress(){

        LayoutInflater inflater = (LayoutInflater) MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View layout = inflater.inflate(R.layout.scoring_header, null);

        float density = MainActivity.this.getResources().getDisplayMetrics().density;
        final PopupWindow pw = new PopupWindow(layout, (int)density * 400, (int)density * 285,true);
        pw.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));


        scoringViewModel = ViewModelProviders.of(this).get(ScoringViewModel.class);

        scoringViewModel.getStrokesFront().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                frontstrokes = integer;
            }
        });
        scoringViewModel.getPointsFront().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                frontpoints = integer;
            }
        });
        scoringViewModel.getStrokesBack().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                backstrokes = integer;
            }
        });
        scoringViewModel.getPointsBack().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                backpoints = integer;
            }
        });
        scoringViewModel.getStrokesTotal().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                totalstrokes = integer;
            }
        });
        scoringViewModel.getPointsTotal().observe(this, new Observer<Integer>() {
            @Override
            public void onChanged(Integer integer) {
                totalpoints = integer;
            }
        });

        ((TextView) layout.findViewById(R.id.comp_name)).setText(comp);
        ((TextView) layout.findViewById(R.id.strokes_value)).setText(String.format("%d", frontstrokes));
        ((TextView) layout.findViewById(R.id.points_value)).setText(String.format("%d", frontpoints));
        ((TextView) layout.findViewById(R.id.bstrokes_value)).setText(String.format("%d", backstrokes));
        ((TextView) layout.findViewById(R.id.bpoints_value)).setText(String.format("%d", backpoints));
        ((TextView) layout.findViewById(R.id.rstrokes_value)).setText(String.format("%d", totalstrokes));
        ((TextView) layout.findViewById(R.id.rpoints_value)).setText(String.format("%d", totalpoints));

        pw.setTouchInterceptor(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if(event.getAction() == MotionEvent.ACTION_OUTSIDE){
                    pw.dismiss();
                    return true;
                }
                return false;
            }
        });
        pw.setOutsideTouchable(true);
        pw.showAtLocation(layout, Gravity.CENTER, 0, 0);
    }

查看我要显示的值，直到显示弹出窗口后，它们才会更新。尽管新的个人得分和积分值已在弹出窗口下方的“回收者”视图中清晰显示，但这仍然没有问题。在setTouchInterceptor处的中断显示旧值，而在动作检查“ if语句”处的中断显示新值。重新排列先前代码的顺序不会影响结果。

有什么想法吗？

如何在弹出窗口中显示最新数据

0 个答案: