[UITracker] Display current activity name when possible

In addition to displaying class name and its hierarchies, the window will now
display the activity name when there's is an activity (not all windows are
activities). This requires the usage stats permission which is enforced here
even if it's disabled in the settings. This is because this feature is meant to
be used as a useful tool separated from the rest of the app, but with some level
of integration.

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

app/src/main/java/io/github/muntashirakon/AppManager/accessibility/activity/LeadingActivityTrackerActivity.java

@@ -18,13 +18,21 @@
 import io.github.muntashirakon.AppManager.R;
 import io.github.muntashirakon.AppManager.accessibility.AccessibilityMultiplexer;
 import io.github.muntashirakon.AppManager.accessibility.NoRootAccessibilityService;
+import io.github.muntashirakon.AppManager.self.SelfPermissions;
+import io.github.muntashirakon.AppManager.settings.FeatureController;
+import io.github.muntashirakon.AppManager.utils.ThreadUtils;
 
 public class LeadingActivityTrackerActivity extends BaseActivity {
     private final ActivityResultLauncher<Intent> mSettingsLauncher = registerForActivityResult(
             new ActivityResultContracts.StartActivityForResult(), result -> {
                 // Init again
                 init();
             });
+    private final ActivityResultLauncher<Intent> mUsageAccessSettingsLauncher = registerForActivityResult(
+            new ActivityResultContracts.StartActivityForResult(), result -> {
+                // Init again
+                init();
+            });
 
     @Override
     protected void onAuthenticated(@Nullable Bundle savedInstanceState) {
@@ -51,6 +59,18 @@ private void init() {
                     .show();
             return;
         }
+        if (!SelfPermissions.checkUsageStatsPermission()) {
+            ThreadUtils.postOnMainThread(() -> new MaterialAlertDialogBuilder(this)
+                    .setTitle(R.string.grant_usage_access)
+                    .setMessage(R.string.grant_usage_acess_message)
+                    .setCancelable(false)
+                    .setPositiveButton(R.string.go, (dialog, which) -> {
+                        mUsageAccessSettingsLauncher.launch(new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS));
+                    })
+                    .setNegativeButton(R.string.go_back, (dialog, which) -> finish())
+                    .show());
+            return;
+        }
         if (!NoRootAccessibilityService.isAccessibilityEnabled(this)) {
             new MaterialAlertDialogBuilder(this)
                     .setTitle(R.string.grant_required_permission)

app/src/main/java/io/github/muntashirakon/AppManager/accessibility/activity/TrackerWindow.java

@@ -3,6 +3,7 @@
 package io.github.muntashirakon.AppManager.accessibility.activity;
 
 import android.annotation.SuppressLint;
+import android.app.usage.UsageEvents;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.PixelFormat;
@@ -29,11 +30,13 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Objects;
 import java.util.concurrent.Future;
 
 import io.github.muntashirakon.AppManager.BuildConfig;
 import io.github.muntashirakon.AppManager.R;
 import io.github.muntashirakon.AppManager.accessibility.AccessibilityMultiplexer;
+import io.github.muntashirakon.AppManager.compat.UsageStatsManagerCompat;
 import io.github.muntashirakon.AppManager.details.AppDetailsActivity;
 import io.github.muntashirakon.AppManager.utils.ThreadUtils;
 import io.github.muntashirakon.AppManager.utils.UIUtils;
@@ -48,6 +51,7 @@ public class TrackerWindow implements View.OnTouchListener {
     private final ShapeableImageView mIconView;
     private final MaterialCardView mContentView;
     private final TextInputTextView mPackageNameView;
+    private final TextInputTextView mActivityNameView;
     private final TextInputTextView mClassNameView;
     private final TextInputTextView mClassHierarchyView;
     private final MaterialButton mPlayPauseButton;
@@ -83,6 +87,7 @@ public TrackerWindow(@NonNull Context context) {
         mIconView = mView.findViewById(R.id.icon);
         mContentView = mView.findViewById(R.id.content);
         mPackageNameView = mView.findViewById(R.id.package_name);
+        mActivityNameView = mView.findViewById(R.id.activity_name);
         mClassNameView = mView.findViewById(R.id.class_name);
         mClassHierarchyView = mView.findViewById(R.id.class_hierarchy);
         mPlayPauseButton = mView.findViewById(R.id.action_play_pause);
@@ -94,6 +99,14 @@ public TrackerWindow(@NonNull Context context) {
             copyText("Package name", packageName);
             return true;
         });
+        mActivityNameView.setOnLongClickListener(v -> {
+            Editable activityName = mActivityNameView.getText();
+            if (TextUtils.isEmpty(activityName)) {
+                return false;
+            }
+            copyText("Activity name", activityName);
+            return true;
+        });
         mClassNameView.setOnLongClickListener(v -> {
             Editable className = mClassNameView.getText();
             if (TextUtils.isEmpty(className)) {
@@ -120,7 +133,7 @@ public TrackerWindow(@NonNull Context context) {
             try {
                 context.startActivity(appInfoIntent);
             } catch (Throwable th) {
-                UIUtils.displayLongToast(th.getMessage());
+                UIUtils.displayLongToast("Error: " + th.getMessage());
             }
         });
         mView.findViewById(R.id.mini).setOnClickListener(v -> iconify());
@@ -191,7 +204,11 @@ public void showOrUpdate(AccessibilityEvent event) {
             mClassNameView.setText(event.getClassName());
             mClassHierarchyResult = ThreadUtils.postOnBackgroundThread(() -> {
                 CharSequence classHierarchy = TextUtils.join("\n", getClassHierarchy(event));
-                ThreadUtils.postOnMainThread(() -> mClassHierarchyView.setText(classHierarchy));
+                String activityName = getActivityName(event);
+                ThreadUtils.postOnMainThread(() -> {
+                    mActivityNameView.setText(activityName);
+                    mClassHierarchyView.setText(classHierarchy);
+                });
             });
         }
     }
@@ -247,6 +264,38 @@ private void copyText(CharSequence label, CharSequence content) {
         Utils.copyToClipboard(mView.getContext(), label, content);
     }
 
+    @Nullable
+    public String getActivityName(@NonNull AccessibilityEvent event) {
+        if (event.getPackageName() == null) {
+            return null;
+        }
+        String packageName = event.getPackageName().toString();
+        UsageEvents.Event usageEvent = new UsageEvents.Event();
+        long currentTimeMillis = System.currentTimeMillis();
+        long timeDiff = 5_000;
+        int tries = 0;
+        do {
+            UsageEvents queryEvents = UsageStatsManagerCompat.queryEvents(currentTimeMillis - timeDiff,
+                    currentTimeMillis, UserHandleHidden.myUserId());
+            long lastTime = 0L;
+            String activityName = null;
+            while (queryEvents.hasNextEvent()) {
+                queryEvents.getNextEvent(usageEvent);
+                if (usageEvent.getEventType() == UsageEvents.Event.ACTIVITY_RESUMED
+                        && Objects.equals(packageName, usageEvent.getPackageName())
+                        && lastTime < usageEvent.getTimeStamp()) {
+                    lastTime = usageEvent.getTimeStamp();
+                    activityName = usageEvent.getClassName();
+                }
+            }
+            if (activityName != null) {
+                return activityName;
+            }
+            timeDiff *= 60;
+        } while ((++tries) != 3);
+        return null;
+    }
+
     @NonNull
     private static List<CharSequence> getClassHierarchy(@NonNull AccessibilityEvent event) {
         List<CharSequence> classHierarchies = new ArrayList<>();

app/src/main/res/layout/window_activity_tracker.xml

@@ -52,6 +52,24 @@
 
                 </com.google.android.material.textfield.TextInputLayout>
 
+                <com.google.android.material.textfield.TextInputLayout
+                    style="@style/Widget.AppTheme.TextInputLayout.Small"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:hint="@string/activity_name"
+                    app:hintEnabled="true">
+
+                    <io.github.muntashirakon.widget.TextInputTextView
+                        android:id="@+id/activity_name"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="none"
+                        android:maxLines="1"
+                        android:fontFamily="monospace"
+                        tools:text="io.github.muntashirakon.AppManager" />
+
+                </com.google.android.material.textfield.TextInputLayout>
+
                 <com.google.android.material.textfield.TextInputLayout
                     style="@style/Widget.AppTheme.TextInputLayout.Small"
                     android:layout_width="match_parent"