usage: improve accessibility and localization

- Bar chart is now accessible for screen reading apps and from keyboards
- Made the usage header accessible to screen readers
- Add localization support for bar chart.

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

Author: MuntashirAkon

app/src/main/java/io/github/muntashirakon/AppManager/usage/AppUsageActivity.java

@@ -29,6 +29,7 @@
 import io.github.muntashirakon.AppManager.utils.BetterActivityResult;
 import io.github.muntashirakon.AppManager.utils.UIUtils;
 import io.github.muntashirakon.adapters.SelectedArrayAdapter;
+import io.github.muntashirakon.util.AccessibilityUtils;
 import io.github.muntashirakon.util.UiUtils;
 import io.github.muntashirakon.view.ProgressIndicatorCompat;
 import io.github.muntashirakon.widget.MaterialSpinner;
@@ -43,6 +44,8 @@ public class AppUsageActivity extends BaseActivity implements SwipeRefreshLayout
             R.id.action_sort_by_wifi_data};
 
     AppUsageViewModel viewModel;
+    MaterialSpinner spinner;
+    RecyclerView recyclerView;
     LinearProgressIndicator progressIndicator;
     private SwipeRefreshLayout mSwipeRefresh;
     private AppUsageAdapter mAppUsageAdapter;
@@ -68,7 +71,7 @@ protected void onAuthenticated(Bundle savedInstanceState) {
         progressIndicator.setVisibilityAfterHide(View.GONE);
 
         // Interval
-        MaterialSpinner spinner = findViewById(R.id.spinner);
+        spinner = findViewById(R.id.spinner);
         UiUtils.applyWindowInsetsAsMargin(spinner, false, false);
         spinner.requestFocus();
         ArrayAdapter<CharSequence> intervalSpinnerAdapter = SelectedArrayAdapter.createFromResource(this,
@@ -82,7 +85,7 @@ protected void onAuthenticated(Bundle savedInstanceState) {
 
         // Get usage stats
         mAppUsageAdapter = new AppUsageAdapter(this);
-        RecyclerView recyclerView = findViewById(R.id.scrollView);
+        recyclerView = findViewById(R.id.scrollView);
         recyclerView.setEmptyView(findViewById(android.R.id.empty));
         recyclerView.setLayoutManager(UIUtils.getGridLayoutAt450Dp(this));
         recyclerView.setAdapter(mAppUsageAdapter);
@@ -94,6 +97,15 @@ protected void onAuthenticated(Bundle savedInstanceState) {
         viewModel.getPackageUsageInfoList().observe(this, packageUsageInfoList -> {
             ProgressIndicatorCompat.setVisibility(progressIndicator, false);
             mAppUsageAdapter.setDefaultList(packageUsageInfoList);
+            // Focus on the first item
+            recyclerView.post(() -> {
+                if (recyclerView.getChildCount() > 0) {
+                    View firstChild = recyclerView.getChildAt(0);
+                    if (firstChild != null) {
+                        AccessibilityUtils.requestAccessibilityFocus(firstChild);
+                    }
+                }
+            });
         });
         viewModel.getPackageUsageInfo().observe(this, packageUsageInfo -> {
             AppUsageDetailsDialog fragment = AppUsageDetailsDialog.getInstance(packageUsageInfo,

app/src/main/java/io/github/muntashirakon/AppManager/usage/AppUsageAdapter.java

@@ -145,9 +145,17 @@ public void onBindViewHolder(@NonNull ListHeaderViewHolder holder) {
         int intervalType = mActivity.viewModel.getCurrentInterval();
         long duration = mActivity.viewModel.getTotalScreenTime();
         long date = mActivity.viewModel.getCurrentDate();
-
-        holder.screenTimeView.setText(DateUtils.getFormattedDuration(mActivity, duration));
-        holder.usageIntervalView.setText(UsageUtils.getIntervalDescription(mActivity, intervalType, date));
+        CharSequence formattedDuration = DateUtils.getFormattedDuration(mActivity, duration);
+        CharSequence intervalDescription = UsageUtils.getIntervalDescription(mActivity, intervalType, date);
+        StringBuilder contentDescription = new StringBuilder()
+                .append(mActivity.getString(R.string.app_usage))
+                .append(" ")
+                .append(intervalDescription)
+                .append(". ")
+                .append(formattedDuration);
+        holder.itemView.setContentDescription(contentDescription);
+        holder.screenTimeView.setText(formattedDuration);
+        holder.usageIntervalView.setText(intervalDescription);
         holder.nextButton.setVisibility(UsageUtils.hasNextDay(date) ? View.VISIBLE : View.INVISIBLE);
         holder.nextButton.setOnClickListener(v -> mActivity.viewModel.loadNext());
         holder.previousButton.setOnClickListener(v -> mActivity.viewModel.loadPrevious());