json fetch and home screen refresh adjustments

app/src/main/java/com/vanced/manager/core/App.kt

@@ -11,6 +11,7 @@ import com.vanced.manager.utils.InternetTools.baseUrl
 import com.vanced.manager.utils.JsonHelper.getJson
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
 import kotlinx.coroutines.launch
 
 open class App: Application() {
@@ -21,20 +22,23 @@ open class App: Application() {
     var manager: JsonObject? = null
 
     override fun onCreate() {
-        loadJson()
+        CoroutineScope(Dispatchers.IO).launch {
-        super.onCreate()
+            loadJsonAsync().await()
-        PRDownloader.initialize(this)
+            super.onCreate()
+            PRDownloader.initialize(this@App)
+
+            Crowdin.init(this@App,
+                CrowdinConfig.Builder()
+                    .withDistributionHash("36c51aed3180a4f43073d28j4s6")
+                    .withNetworkType(NetworkType.WIFI)
+                    .build()
+            )
+        }
 
-        Crowdin.init(this,
-        CrowdinConfig.Builder()
-            .withDistributionHash("36c51aed3180a4f43073d28j4s6")
-            .withNetworkType(NetworkType.WIFI)
-            .build()
-        )
 
     }
 
-    fun loadJson() = CoroutineScope(Dispatchers.IO).launch {
+    fun loadJsonAsync() = CoroutineScope(Dispatchers.IO).async {
         val latest = getJson("$baseUrl/latest.json")
         vanced = latest.obj("vanced")
         music = latest.obj("music")

app/src/main/java/com/vanced/manager/model/DataModel.kt

@@ -12,7 +12,7 @@ import com.vanced.manager.R
 import com.vanced.manager.utils.PackageHelper.isPackageInstalled
 
 open class DataModel(
-    jsonObject: JsonObject?,
+    private val jsonObject: JsonObject?,
     variant: String = "nonroot",
     app: String,
     private val context: Context
@@ -35,7 +35,7 @@ open class DataModel(
     val buttonIcon = ObservableField<Drawable>()
     val changelog = ObservableField<String>()
 
-    init {
+    fun fetch() {
         isAppInstalled.set(isPackageInstalled(appPkg, context.packageManager))
         versionName.set(jsonObject?.string("version")?.removeSuffix("-vanced")  ?: context.getString(R.string.unavailable))
         installedVersionName.set(getPkgVersionName(isAppInstalled.get(), appPkg))
@@ -45,6 +45,10 @@ open class DataModel(
         buttonIcon.set(compareIntDrawable(installedVersionCode.get(), versionCode.get()))
         changelog.set(jsonObject?.string("changelog") ?: context.getString(R.string.unavailable))
     }
+
+    init {
+        fetch()
+    }
     
     private fun getPkgVersionName(toCheck: Boolean, pkg: String): String  {
         return if (toCheck) {

app/src/main/java/com/vanced/manager/ui/MainActivity.kt

@@ -4,17 +4,19 @@ import android.content.Context
 import android.os.Bundle
 import android.util.Log
 import android.view.MenuItem
+import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import androidx.databinding.DataBindingUtil
+import androidx.navigation.fragment.NavHostFragment
 import androidx.preference.PreferenceManager.getDefaultSharedPreferences
 import com.crowdin.platform.Crowdin
 import com.crowdin.platform.LoadingStateListener
 import com.google.android.material.tabs.TabLayout
 import com.google.android.material.tabs.TabLayoutMediator
 import com.google.firebase.messaging.FirebaseMessaging
+import com.topjohnwu.superuser.Shell
 import com.vanced.manager.R
 import com.vanced.manager.adapter.SectionVariantAdapter
-import com.vanced.manager.core.App
 import com.vanced.manager.databinding.ActivityMainBinding
 import com.vanced.manager.ui.dialogs.DialogContainer
 import com.vanced.manager.ui.fragments.UpdateCheckFragment
@@ -45,6 +47,12 @@ class MainActivity : AppCompatActivity() {
     private val tabListener = object : TabLayout.OnTabSelectedListener {
 
         override fun onTabSelected(tab: TabLayout.Tab) {
+            if (tab.position == 1 && !Shell.rootAccess()) {
+                tab.select(0)
+                Toast.makeText(this@MainActivity, getString(R.string.root_not_granted), Toast.LENGTH_SHORT).show()
+                return
+            }
+
             getDefaultSharedPreferences(this@MainActivity).edit().putString("vanced_variant", 
                 when (tab.position) {
                     1 -> "root"
@@ -104,6 +112,12 @@ class MainActivity : AppCompatActivity() {
         binding.mainTablayout.addOnTabSelectedListener(tabListener)
     }
 
+    override fun onBackPressed() {
+        super.onBackPressed()
+        val navHost = supportFragmentManager.findFragmentById(R.id.nav_host) as NavHostFragment
+        navHost.navController.popBackStack()
+    }
+
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         if (installing) {
             return false
@@ -131,10 +145,14 @@ class MainActivity : AppCompatActivity() {
         super.attachBaseContext(Crowdin.wrapContext(newBase))
     }
 
+    fun TabLayout.Tab.select(position: Int) {
+        this.parent?.getTabAt(position)?.select()
+    }
+
     private fun initDialogs() {
         val prefs = getDefaultSharedPreferences(this)
         val variant = prefs.getString("vanced_variant", "nonroot")
-        val showRootDialog = prefs.getBoolean("show_root_dialog", true)
+        prefs.getBoolean("show_root_dialog", true)
 
         when {
             prefs.getBoolean("firstStart", true) -> {

app/src/main/java/com/vanced/manager/ui/fragments/HomeFragment.kt

@@ -153,6 +153,7 @@ open class HomeFragment : Fragment(), View.OnClickListener {
     private fun registerReceivers() {
         val intentFilter = IntentFilter()
         intentFilter.addAction(INSTALL_FAILED)
+        intentFilter.addAction(REFRESH_HOME)
         localBroadcastManager.registerReceiver(broadcastReceiver, intentFilter)
     }
 

app/src/main/java/com/vanced/manager/ui/fragments/MainFragment.kt

@@ -67,6 +67,8 @@ class MainFragment : Fragment() {
             findViewById<MaterialToolbar>(R.id.home_toolbar).navigationIcon = if (isNeeded) ContextCompat.getDrawable(requireActivity(), R.drawable.ic_keyboard_backspace_black_24dp) else null
         }
     }
+
+
     
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {

app/src/main/java/com/vanced/manager/ui/viewmodels/HomeViewModel.kt

@@ -27,7 +27,6 @@ import com.vanced.manager.utils.PackageHelper.uninstallApk
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import okhttp3.internal.wait
 
 open class HomeViewModel(application: Application): AndroidViewModel(application) {
 
@@ -47,13 +46,15 @@ open class HomeViewModel(application: Application): AndroidViewModel(application
 
     val navigateDestination : LiveData<Event<Int>> = _navigateDestination
 
-    fun fetchData() {
+    fun fetchData() = CoroutineScope(Dispatchers.IO).launch {
-        CoroutineScope(Dispatchers.IO).launch {
+        fetching.set(true)
-            fetching.set(true)
+        managerApp.loadJsonAsync().await()
-            managerApp.loadJson()
+        vanced.get()?.fetch()
-            Crowdin.forceUpdate(getApplication())
+        music.get()?.fetch()
-            fetching.set(false)
+        microg.get()?.fetch()
-        }
+        manager.get()?.fetch()
+        Crowdin.forceUpdate(getApplication())
+        fetching.set(false)
     }
     
     //private val microgSnackbar = Snackbar.make(, R.string.no_microg, Snackbar.LENGTH_LONG).setAction(R.string.install) { downloadMicrog(getApplication()) }
@@ -143,8 +144,9 @@ open class HomeViewModel(application: Application): AndroidViewModel(application
 
     init {
         fetching.set(true)
-        while (managerApp.manager == null)
+        //while (managerApp.manager == null)
-            this.wait()
+            //this.wait()
+
         vanced.set(DataModel(managerApp.vanced, variant, "vanced", app))
         microg.set(DataModel(managerApp.microg, app = "microg", context = app))
         music.set(DataModel(managerApp.music, app = "music", context = app))

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

@@ -21,7 +21,7 @@
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
                 app:titleTextColor="?attr/toolbarIconColor"
-                android:background="@android:color/transparent"/>
+                android:background="?colorSurface"/>
 
         </com.google.android.material.appbar.AppBarLayout>