From 7713274d159f944ee3b2cbfb9b557bccce9aa158 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=A7=92=E7=A0=82=E7=B3=96?=
 <90336521+lings03@users.noreply.github.com>
Date: Fri, 20 Sep 2024 22:24:24 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E4=BA=8C=E6=AC=A1=E8=BF=94?=
 =?UTF-8?q?=E5=9B=9E=E7=A1=AE=E8=AE=A4=20(#21)?=
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* 二次返回确认
* 其他页返回控制台
---
 .../top/laoxin/modmanager/MainActivity.kt     | 29 --------------
 .../modmanager/ui/view/ModManagerApp.kt       | 38 ++++++++++++++++++-
 2 files changed, 37 insertions(+), 30 deletions(-)

diff --git a/app/src/main/java/top/laoxin/modmanager/MainActivity.kt b/app/src/main/java/top/laoxin/modmanager/MainActivity.kt
index 270e756..1351acb 100644
--- a/app/src/main/java/top/laoxin/modmanager/MainActivity.kt
+++ b/app/src/main/java/top/laoxin/modmanager/MainActivity.kt
@@ -69,7 +69,6 @@ class MainActivity : ComponentActivity() {
         }
     }
 
-
     override fun onDestroy() {
         super.onDestroy()
         if (PermissionTools.isShizukuAvailable) {
@@ -77,34 +76,6 @@ class MainActivity : ComponentActivity() {
             Shizuku.removeRequestPermissionResultListener(PermissionTools.REQUEST_PERMISSION_RESULT_LISTENER)
         }
     }
-
-
-    // 读取文件路径
-    /*    private fun loadPath(path: String?, isUserClicked: Boolean) {
-        if (path == null) {
-            return
-        }
-        val isNavigate = !TextUtils.equals(mPathCache, path)
-        mPathCache = path
-        if (FileTools.shouldRequestUriPermission(path)) {
-            if (isUserClicked) {
-
-                // 读取安卓目录权限
-                showRequestUriPermissionDialog()
-            }
-        } else {
-            mDirectory = File(path)
-            binding.tvPath.setText(mDirectory!!.getPath())
-            val list: List<BeanFile?> = FileTools.getSortedFileList(path)
-            val bundle = Bundle()
-            bundle.putParcelableArrayList(BundleKey.FILE_LIST, list as ArrayList<out Parcelable?>)
-            if (!isNavigate) {
-                mNavController.popBackStack()
-            }
-            mNavController.navigate(R.id.fileListFragment, bundle)
-        }
-    }*/
-
 }
 
 
diff --git a/app/src/main/java/top/laoxin/modmanager/ui/view/ModManagerApp.kt b/app/src/main/java/top/laoxin/modmanager/ui/view/ModManagerApp.kt
index 63697e8..153275e 100644
--- a/app/src/main/java/top/laoxin/modmanager/ui/view/ModManagerApp.kt
+++ b/app/src/main/java/top/laoxin/modmanager/ui/view/ModManagerApp.kt
@@ -1,6 +1,9 @@
 package top.laoxin.modmanager.ui.view
 
+import android.app.Activity
 import android.content.res.Configuration
+import android.widget.Toast
+import androidx.activity.compose.BackHandler
 import androidx.annotation.StringRes
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.fadeIn
@@ -26,6 +29,7 @@ import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.platform.LocalConfiguration
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
@@ -62,7 +66,11 @@ fun ModManagerApp() {
     val pagerState = rememberPagerState()
     val configuration = LocalConfiguration.current
 
+    val scope = rememberCoroutineScope()
+    var exitTime by remember { mutableLongStateOf(0L) }
+
     Row {
+        // 根据屏幕方向选择布局
         if (configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
             NavigationRail(
                 pagerState = pagerState,
@@ -72,6 +80,7 @@ fun ModManagerApp() {
 
         Scaffold(
             topBar = {
+                // 根据当前页面显示不同的顶部工具栏
                 when (pagerState.currentPage) {
                     NavigationIndex.CONSOLE.ordinal -> ConsoleTopBar(consoleViewModel)
                     NavigationIndex.MOD.ordinal -> ModTopBar(modViewModel)
@@ -86,6 +95,7 @@ fun ModManagerApp() {
                 )
             },
             bottomBar = {
+                // 在纵向模式下显示底部导航栏
                 if (configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
                     NavigationBar(
                         pagerState = pagerState,
@@ -94,11 +104,37 @@ fun ModManagerApp() {
                 }
             }
         ) { innerPadding ->
+            val context = LocalContext.current // 在这里获取 Context
+            val exitToast: Toast =
+                remember { Toast.makeText(context, "再按一次退出应用", Toast.LENGTH_SHORT) }
+            val activity = context as? Activity // 获取当前 Activity
+
+            BackHandler(enabled = pagerState.currentPage == NavigationIndex.CONSOLE.ordinal) {
+                // 在 ConsolePage 显示退出确认
+                val currentTime = System.currentTimeMillis()
+                if (currentTime - exitTime > 2000) {
+                    exitToast.show()
+                    exitTime = currentTime
+                } else {
+                    // 安全关闭应用
+                    exitToast.cancel()
+                    activity?.finish()
+                }
+            }
+
+            BackHandler(enabled = pagerState.currentPage != NavigationIndex.CONSOLE.ordinal) {
+                // 返回到 ConsolePage
+                scope.launch {
+                    pagerState.scrollToPage(NavigationIndex.CONSOLE.ordinal)
+                }
+            }
+
             HorizontalPager(
                 state = pagerState,
                 count = NavigationIndex.entries.size,
                 modifier = Modifier.padding(innerPadding)
             ) { page ->
+                // 根据当前页显示不同的内容
                 when (page) {
                     NavigationIndex.CONSOLE.ordinal -> ConsolePage(consoleViewModel)
                     NavigationIndex.MOD.ordinal -> ModPage(modViewModel)
@@ -166,6 +202,7 @@ fun NavigationRail(
     }
 }
 
+// 底部导航
 @Composable
 fun NavigationBar(
     pagerState: PagerState,
@@ -230,7 +267,6 @@ private fun refreshCurrentPage(currentPage: Int, modViewModel: ModViewModel) {
     }
 }
 
-
 //导航
 @Composable
 fun NavigationHost(