android: Adjust log lifecycle

Now logging will start when the frontend starts like qt does. This also adjusts the share log button to follow where we share the current log if we just returned from a game or return the old log if we haven't started a game yet.

src/android/app/src/main/java/org/yuzu/yuzu_emu/activities/EmulationActivity.kt

@@ -47,6 +47,7 @@ import org.yuzu.yuzu_emu.model.EmulationViewModel
 import org.yuzu.yuzu_emu.model.Game
 import org.yuzu.yuzu_emu.utils.ForegroundService
 import org.yuzu.yuzu_emu.utils.InputHandler
+import org.yuzu.yuzu_emu.utils.Log
 import org.yuzu.yuzu_emu.utils.MemoryUtil
 import org.yuzu.yuzu_emu.utils.NfcReader
 import org.yuzu.yuzu_emu.utils.ThemeHelper
@@ -80,6 +81,7 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        Log.gameLaunched = true
         ThemeHelper.setTheme(this)
 
         super.onCreate(savedInstanceState)

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/HomeSettingsFragment.kt

@@ -42,6 +42,7 @@ import org.yuzu.yuzu_emu.model.HomeViewModel
 import org.yuzu.yuzu_emu.ui.main.MainActivity
 import org.yuzu.yuzu_emu.utils.FileUtil
 import org.yuzu.yuzu_emu.utils.GpuDriverHelper
+import org.yuzu.yuzu_emu.utils.Log
 
 class HomeSettingsFragment : Fragment() {
     private var _binding: FragmentHomeSettingsBinding? = null
@@ -312,19 +313,32 @@ class HomeSettingsFragment : Fragment() {
         }
     }
 
+    // Share the current log if we just returned from a game but share the old log
+    // if we just started the app and the old log exists.
     private fun shareLog() {
-        val file = DocumentFile.fromSingleUri(
+        val currentLog = DocumentFile.fromSingleUri(
             mainActivity,
             DocumentsContract.buildDocumentUri(
                 DocumentProvider.AUTHORITY,
                 "${DocumentProvider.ROOT_ID}/log/yuzu_log.txt"
             )
         )!!
-        if (file.exists()) {
-            val intent = Intent(Intent.ACTION_SEND)
-                .setDataAndType(file.uri, FileUtil.TEXT_PLAIN)
-                .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                .putExtra(Intent.EXTRA_STREAM, file.uri)
+        val oldLog = DocumentFile.fromSingleUri(
+            mainActivity,
+            DocumentsContract.buildDocumentUri(
+                DocumentProvider.AUTHORITY,
+                "${DocumentProvider.ROOT_ID}/log/yuzu_log.txt.old.txt"
+            )
+        )!!
+
+        val intent = Intent(Intent.ACTION_SEND)
+            .setDataAndType(currentLog.uri, FileUtil.TEXT_PLAIN)
+            .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+        if (!Log.gameLaunched && oldLog.exists()) {
+            intent.putExtra(Intent.EXTRA_STREAM, oldLog.uri)
+            startActivity(Intent.createChooser(intent, getText(R.string.share_log)))
+        } else if (currentLog.exists()) {
+            intent.putExtra(Intent.EXTRA_STREAM, currentLog.uri)
             startActivity(Intent.createChooser(intent, getText(R.string.share_log)))
         } else {
             Toast.makeText(

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/Log.kt

@@ -4,6 +4,9 @@
 package org.yuzu.yuzu_emu.utils
 
 object Log {
+    // Tracks whether we should share the old log or the current log
+    var gameLaunched = false
+
     external fun debug(message: String)
 
     external fun warning(message: String)

src/android/app/src/main/jni/native.cpp

@@ -248,6 +248,11 @@ void EmulationSession::ConfigureFilesystemProvider(const std::string& filepath)
 }
 
 void EmulationSession::InitializeSystem() {
+    // Initialize logging system
+    Common::Log::Initialize();
+    Common::Log::SetColorConsoleBackendEnabled(true);
+    Common::Log::Start();
+
     // Initialize filesystem.
     m_system.SetFilesystem(m_vfs);
     m_system.GetUserChannel().clear();
@@ -462,10 +467,6 @@ void EmulationSession::OnEmulationStopped(Core::SystemResultStatus result) {
 }
 
 static Core::SystemResultStatus RunEmulation(const std::string& filepath) {
-    Common::Log::Initialize();
-    Common::Log::SetColorConsoleBackendEnabled(true);
-    Common::Log::Start();
-
     MicroProfileOnThreadCreate("EmuThread");
     SCOPE_EXIT({ MicroProfileShutdown(); });