Add AppTimeSpentPreference for Spa

Bug: 236346018
Test: Manual with App Info page
Test: atest SettingsSpaUnitTests
Change-Id: Ia707dc57222797536861a7366a31aafaf91b677b

src/com/android/settings/spa/app/appinfo/AppInfoSettings.kt

@@ -92,6 +92,7 @@ private fun AppInfoSettings(packageInfoPresenter: PackageInfoPresenter) {
 
         AppPermissionPreference(app)
         AppStoragePreference(app)
+        AppTimeSpentPreference(app)
 
         Category(title = stringResource(R.string.advanced_apps)) {
             DisplayOverOtherAppsAppListProvider.InfoPageEntryItem(app)

src/com/android/settings/spa/app/appinfo/AppTimeSpentPreference.kt

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.spa.app.appinfo
+
+import android.content.Context
+import android.content.Intent
+import android.content.pm.ApplicationInfo
+import android.content.pm.PackageManager.ResolveInfoFlags
+import android.provider.Settings
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.remember
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.lifecycle.liveData
+import com.android.settings.R
+import com.android.settings.overlay.FeatureFactory
+import com.android.settingslib.spa.framework.compose.stateOf
+import com.android.settingslib.spa.widget.preference.Preference
+import com.android.settingslib.spa.widget.preference.PreferenceModel
+import com.android.settingslib.spaprivileged.model.app.hasFlag
+import com.android.settingslib.spaprivileged.model.app.userHandle
+import com.android.settingslib.spaprivileged.model.app.userId
+import kotlinx.coroutines.Dispatchers
+
+@Composable
+fun AppTimeSpentPreference(app: ApplicationInfo) {
+    val context = LocalContext.current
+    val presenter = remember { AppTimeSpentPresenter(context, app) }
+    if (!presenter.isAvailable()) return
+
+    Preference(object : PreferenceModel {
+        override val title = stringResource(R.string.time_spent_in_app_pref_title)
+        override val summary = presenter.summaryLiveData.observeAsState(
+            initial = stringResource(R.string.summary_placeholder),
+        )
+        override val enabled = stateOf(presenter.isEnabled())
+        override val onClick = presenter::startActivity
+    })
+}
+
+private class AppTimeSpentPresenter(
+    private val context: Context,
+    private val app: ApplicationInfo,
+) {
+    private val intent = Intent(Settings.ACTION_APP_USAGE_SETTINGS).apply {
+        putExtra(Intent.EXTRA_PACKAGE_NAME, app.packageName)
+    }
+    private val appFeatureProvider = FeatureFactory.getFactory(context)
+        .getApplicationFeatureProvider(context)
+
+    fun isAvailable() = context.packageManager.queryIntentActivitiesAsUser(
+        intent, ResolveInfoFlags.of(0), app.userId
+    ).any { resolveInfo ->
+        resolveInfo?.activityInfo?.applicationInfo?.isSystemApp == true
+    }
+
+    fun isEnabled() = app.hasFlag(ApplicationInfo.FLAG_INSTALLED)
+
+    val summaryLiveData = liveData(Dispatchers.IO) {
+        emit(appFeatureProvider.getTimeSpentInApp(app.packageName).toString())
+    }
+
+    fun startActivity() {
+        context.startActivityAsUser(intent, app.userHandle)
+    }
+}