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Code Issues Releases Wiki Activity

Postpone creating text until view is requested

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Wait until the measurement is actually to be shown in the gui until
creating the spanned text. Cache it so that it doesn't have to be
recalculated.

Drop the first hidden column that contained the id. Instead implement
Adapter.getItemId and use the supplied id in onClickListenerRow.

Speeds up the initial loading of the table.
This commit is contained in:
Erik Johansson
2018-02-07 20:48:39 +01:00
parent 49bd7130f9
commit 11be8a7c85
1 changed files with 88 additions and 91 deletions
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179
android_app/app/src/main/java/com/health/openscale/gui/fragments/TableFragment.java
View File

@@ -31,7 +31,6 @@ import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.SpannedString;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MenuItem;
@@ -109,6 +108,9 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
tableDataView = (ListView) tableView.findViewById(R.id.tableDataView);
tableHeaderView = (LinearLayout) tableView.findViewById(R.id.tableHeaderView);
tableDataView.setAdapter(new ListViewAdapter());
tableDataView.setOnItemClickListener(new onClickListenerRow());
optionMenu = (ImageView) tableView.findViewById(R.id.optionMenu);
measurementsList = new ArrayList<>();
@@ -192,15 +194,12 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
@Override
public void updateOnView(List<ScaleMeasurement> scaleMeasurementList)
{
tableDataView.setAdapter(new ListViewAdapter(new ArrayList<HashMap<Integer, Spanned>>())); // delete all data in the table with an empty adapter array list
if (scaleMeasurementList.isEmpty()) {
return;
}
final int maxSize = 25;
int subpageCount = (int)Math.ceil(scaleMeasurementList.size() / (double)maxSize);
final int subpageCount = (int)Math.ceil(scaleMeasurementList.size() / (double)maxSize);
if (selectedSubpageNr >= subpageCount) {
selectedSubpageNr = Math.max(0, subpageCount - 1);
}
subpageView.removeAllViews();
@@ -216,7 +215,7 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
moveSubpageLeft.setEnabled(selectedSubpageNr > 0);
subpageView.addView(moveSubpageLeft);
for (int i=0; i<subpageCount; i++) {
for (int i = 0; i < subpageCount; i++) {
TextView subpageNrView = new TextView(tableView.getContext());
subpageNrView.setOnClickListener(new onClickListenerSubpageSelect());
subpageNrView.setText(Integer.toString(i+1));
@@ -225,6 +224,7 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
subpageView.addView(subpageNrView);
}
if (subpageView.getChildCount() > 1) {
TextView selectedSubpageNrView = (TextView) subpageView.getChildAt(selectedSubpageNr + 1);
if (selectedSubpageNrView != null) {
@@ -247,6 +247,7 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
tableHeaderView.removeAllViews();
ArrayList<MeasurementView> visibleMeasurements = new ArrayList<>();
for (MeasurementView measurement : measurementsList) {
measurement.updatePreferences(prefs);
@@ -259,50 +260,16 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
headerIcon.getLayoutParams().height = pxImageDp(20);
tableHeaderView.addView(headerIcon);
visibleMeasurements.add(measurement);
}
}
ArrayList<HashMap<Integer, Spanned>> dataRowList = new ArrayList<>();
ListViewAdapter adapter = (ListViewAdapter) tableDataView.getAdapter();
int displayCount = 0;
for (int i = (maxSize * selectedSubpageNr); i < scaleMeasurementList.size(); i++) {
ScaleMeasurement scaleMeasurement = scaleMeasurementList.get(i);
ScaleMeasurement prevScaleMeasurement = null;
if (i < scaleMeasurementList.size() - 1) {
prevScaleMeasurement = scaleMeasurementList.get(i + 1);
}
HashMap<Integer, Spanned> dataRow = new HashMap<>();
int columnNr = 0;
dataRow.put(columnNr++, new SpannedString(Long.toString(scaleMeasurement.getId())));
for (MeasurementView measurement : measurementsList) {
measurement.loadFrom(scaleMeasurement, prevScaleMeasurement);
if (measurement.isVisible()) {
SpannableStringBuilder text = new SpannableStringBuilder();
text.append(measurement.getValueAsString());
text.append("\n");
measurement.appendDiffValue(text);
dataRow.put(columnNr++, text);
}
}
dataRowList.add(dataRow);
displayCount++;
if (maxSize <= displayCount) {
break;
}
}
tableDataView.setAdapter(new ListViewAdapter(dataRowList));
tableDataView.setOnItemClickListener(new onClickListenerRow());
final int startOffset = maxSize * selectedSubpageNr;
final int endOffset = Math.min(startOffset + maxSize + 1, scaleMeasurementList.size());
adapter.setMeasurements(visibleMeasurements, scaleMeasurementList.subList(startOffset, endOffset), maxSize);
}
private int pxImageDp(float dp) {
@@ -311,14 +278,11 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
private class onClickListenerRow implements AdapterView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long click_id) {
LinearLayout dataRow = (LinearLayout)view;
TextView idTextView = (TextView) dataRow.getChildAt(0);
int id = Integer.parseInt(idTextView.getText().toString());
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(tableView.getContext(), DataEntryActivity.class);
intent.putExtra(DataEntryActivity.EXTRA_ID, id);
startActivityForResult(intent, 1); }
intent.putExtra(DataEntryActivity.EXTRA_ID, (int)id);
startActivityForResult(intent, 1);
}
}
private void importTable() {
@@ -480,69 +444,102 @@ public class TableFragment extends Fragment implements FragmentUpdateListener {
private class ListViewAdapter extends BaseAdapter {
private ArrayList<HashMap<Integer, Spanned>> dataList;
private LinearLayout row;
private List<MeasurementView> visibleMeasurements;
private List<ScaleMeasurement> scaleMeasurements;
private int measurementsToShow = 0;
public ListViewAdapter(ArrayList<HashMap<Integer, Spanned>> list) {
super();
this.dataList = list;
private Spanned[][] stringCache;
private ArrayList<HashMap<Integer, Spanned>> dataList;
public void setMeasurements(List<MeasurementView> visibleMeasurements,
List<ScaleMeasurement> scaleMeasurements,
int maxSize) {
this.visibleMeasurements = visibleMeasurements;
this.scaleMeasurements = scaleMeasurements;
measurementsToShow = Math.min(scaleMeasurements.size(), maxSize);
stringCache = new Spanned[measurementsToShow][visibleMeasurements.size()];
notifyDataSetChanged();
}
@Override
public int getCount() {
return dataList.size();
return measurementsToShow;
}
@Override
public Object getItem(int position) {
return dataList.get(position);
return scaleMeasurements.get(position);
}
@Override
public long getItemId(int position) {
return 0;
return scaleMeasurements.get(position).getId();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (dataList.isEmpty()) {
return convertView;
}
// Create entries in stringCache if needed
if (stringCache[position][0] == null) {
ScaleMeasurement measurement = scaleMeasurements.get(position);
ScaleMeasurement prevMeasurement = null;
if (position + 1 < scaleMeasurements.size()) {
prevMeasurement = scaleMeasurements.get(position + 1);
}
if (convertView == null) {
row = new LinearLayout(getContext());
convertView = row;
for (int i = 0; i < visibleMeasurements.size(); ++i) {
visibleMeasurements.get(i).loadFrom(measurement, prevMeasurement);
for (int i = 0; i< dataList.get(0).size(); i++) {
TextView column = new TextView(getContext());
column.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1));
column.getLayoutParams().width = 0;
column.setGravity(Gravity.CENTER);
SpannableStringBuilder string = new SpannableStringBuilder();
string.append(visibleMeasurements.get(i).getValueAsString());
string.append("\n");
visibleMeasurements.get(i).appendDiffValue(string);
if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) != Configuration.SCREENLAYOUT_SIZE_XLARGE &&
(getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) != Configuration.SCREENLAYOUT_SIZE_LARGE) {
column.setTextSize(COMPLEX_UNIT_DIP, 9);
}
if (i == 0) {
column.setVisibility(View.GONE);
}
row.addView(column);
stringCache[position][i] = string;
}
}
LinearLayout convView = (LinearLayout)convertView;
// Create view if needed
LinearLayout row;
if (convertView == null) {
row = new LinearLayout(getContext());
HashMap<Integer, Spanned> map = dataList.get(position);
final int screenSize = getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
final boolean isSmallScreen =
screenSize != Configuration.SCREENLAYOUT_SIZE_XLARGE
&& screenSize != Configuration.SCREENLAYOUT_SIZE_LARGE;
for (int i = 0; i < map.size(); i++) {
TextView column = (TextView)convView.getChildAt(i);
column.setText(map.get(i));
for (int i = 0; i < visibleMeasurements.size(); ++i) {
TextView column = new TextView(getContext());
column.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1));
column.getLayoutParams().width = 0;
column.setGravity(Gravity.CENTER);
if (isSmallScreen) {
column.setTextSize(COMPLEX_UNIT_DIP, 9);
}
row.addView(column);
}
}
else {
row = (LinearLayout) convertView;
}
return convertView;
// Fill view with data
for (int i = 0; i < visibleMeasurements.size(); ++i) {
TextView column = (TextView) row.getChildAt(i);
column.setText(stringCache[position][i]);
}
return row;
}
@Override
public boolean hasStableIds() {
return true;
}
}
}