...

app/src/main/java/com/base/pdfviewerscannerwhite/helper/BaseActivity.kt

@@ -13,7 +13,6 @@ import com.base.pdfviewerscannerwhite.utils.ActivityLauncher
 import com.base.pdfviewerscannerwhite.utils.ActivityManagerUtils
 import com.base.pdfviewerscannerwhite.utils.LanguageUtils.changeAppLanguage
 import com.base.pdfviewerscannerwhite.utils.LogEx
-import java.util.Locale
 
 abstract class BaseActivity<T : ViewBinding> : AppCompatActivity() {
     private val TAG = "BaseActivity"

app/src/main/java/com/base/pdfviewerscannerwhite/ui/guide/GuideActivity.kt

 package com.base.pdfviewerscannerwhite.ui.guide
 
-import androidx.appcompat.app.AppCompatActivity
+import android.view.View
+import androidx.fragment.app.Fragment
+import androidx.viewpager2.adapter.FragmentStateAdapter
+import androidx.viewpager2.widget.ViewPager2
 import com.base.pdfviewerscannerwhite.databinding.ActivityGuideBinding
 import com.base.pdfviewerscannerwhite.helper.BaseActivity
+import com.base.pdfviewerscannerwhite.ui.guide.GuideDialog.showGuideDialog
 
 class GuideActivity : BaseActivity<ActivityGuideBinding>() {
 
+    private val page1 by lazy {
+        GuidePageFragment(1)
+    }
+    private val page2 by lazy {
+        GuidePageFragment(2)
+    }
+    private val page3 by lazy {
+        GuidePageFragment(3)
+    }
+
+    private val fragments = arrayOf(page1, page2, page3)
+
     override val binding: ActivityGuideBinding by lazy {
         ActivityGuideBinding.inflate(layoutInflater)
     }
 
+
     override fun initView() {
+
+        initViewPager2()
+
+        showGuideDialog(close = {
+            finishToMain()
+        }, view = {
+            binding.viewPager2.visibility = View.VISIBLE
+        })
+    }
+
+    private fun initViewPager2() {
+        val pageAdapter = object : FragmentStateAdapter(this) {
+            override fun getItemCount(): Int {
+                return fragments.size
+            }
+
+            override fun createFragment(position: Int): Fragment {
+                return fragments[position]
+            }
+
+        }
+        binding.viewPager2.run {
+            isUserInputEnabled = true
+            //https://www.jianshu.com/p/f69bd30cf5b0
+            //FragmentStateAdapter 这里必须传人fragment
+            adapter = pageAdapter
+            offscreenPageLimit = 4
+        }
+        binding.viewPager2.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
+
+            override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
+                super.onPageScrolled(position, positionOffset, positionOffsetPixels)
+            }
+
+            override fun onPageSelected(position: Int) {
+
+            }
+        })
+    }
+
+    fun changePage(index: Int) {
+        binding.viewPager2.setCurrentItem(index, true)
     }
 
 }
\ No newline at end of file

app/src/main/java/com/base/pdfviewerscannerwhite/ui/guide/GuideDialog.kt

@@ -4,11 +4,15 @@ import android.app.AlertDialog
 import android.content.Context
 import android.view.Gravity
 import android.view.LayoutInflater
+import android.widget.LinearLayout
 import com.base.pdfviewerscannerwhite.databinding.DialogGuideBinding
 
 object GuideDialog {
 
-    fun Context.showGuideDialog() {
+    fun Context.showGuideDialog(
+        close: () -> Unit,
+        view: () -> Unit
+    ) {
         val dialog = AlertDialog.Builder(this).create()
         val binding = DialogGuideBinding.inflate(LayoutInflater.from(this))
         dialog.setView(binding.root)
@@ -17,11 +21,21 @@ object GuideDialog {
         dialog.show()
 
         val params = dialog.window?.attributes
+        params?.width = LinearLayout.LayoutParams.MATCH_PARENT
 //        params?.width = resources.getDimensionPixelOffset(R.dimen.dp_345)
 //        params?.height = LinearLayout.LayoutParams.WRAP_CONTENT
         params?.gravity = Gravity.BOTTOM
         dialog.window?.attributes = params
         dialog.window?.setBackgroundDrawableResource(android.R.color.transparent)
 
+        binding.ivClose.setOnClickListener {
+            dialog.dismiss()
+            close.invoke()
+        }
+        binding.tvView.setOnClickListener {
+            dialog?.dismiss()
+            view.invoke()
+        }
+
     }
 }
\ No newline at end of file

app/src/main/java/com/base/pdfviewerscannerwhite/ui/guide/GuidePageFragment.kt

 package com.base.pdfviewerscannerwhite.ui.guide
 
+import android.view.View
+import com.base.pdfviewerscannerwhite.R
+import com.base.pdfviewerscannerwhite.ads.admob.AdmobNativeUtils
 import com.base.pdfviewerscannerwhite.databinding.FragmentGuidePageBinding
 import com.base.pdfviewerscannerwhite.helper.BaseFragment
 
-class GuidePageFragment : BaseFragment<FragmentGuidePageBinding>() {
+class GuidePageFragment(
+    val page: Int = 1
+) : BaseFragment<FragmentGuidePageBinding>() {
 
     override val binding: FragmentGuidePageBinding by lazy {
         FragmentGuidePageBinding.inflate(layoutInflater)
     }
 
     override fun setView() {
+        AdmobNativeUtils.showNativeAd(requireActivity(), binding.flAd, R.layout.layout_admob_document_in)
 
+        when (page) {
+            1 -> {
+                binding.tvNo.text = "1 / "
+                binding.tv1.text = requireContext().getString(R.string.discover_the_feature_of_smart_pdf_reader)
+                binding.tv2.visibility = View.GONE
+                binding.iv.setImageResource(R.mipmap.ydyetu2)
+                binding.tvBtn.text = requireContext().getString(R.string.next)
+            }
+
+            2 -> {
+                binding.tvNo.text = "2 / "
+                binding.tv1.text = requireContext().getString(R.string.easy_and_immersive_to_read)
+                binding.tv2.visibility = View.VISIBLE
+                binding.tv2.text = getString(R.string.supports_pdf_doc_excel_ppt)
+                binding.iv.setImageResource(R.mipmap.ydyetu3)
+                binding.tvBtn.text = requireContext().getString(R.string.next)
+            }
+
+            3 -> {
+                binding.tvNo.text = "3 / "
+                binding.tv1.text = getString(R.string.pdf_toolkit_solutions)
+                binding.tv2.visibility = View.VISIBLE
+                binding.tv2.text = getString(R.string.convert_multiple_file_types)
+                binding.iv.setImageResource(R.mipmap.ydyetu4)
+                binding.tvBtn.text = requireContext().getString(R.string.go_to_start)
+            }
+        }
+
+        binding.tvBtn.setOnClickListener {
+            val activity = requireActivity() as GuideActivity
+            when (page) {
+                1 -> {
+                    activity.changePage(1)
+                }
+
+                2 -> {
+                    activity.changePage(2)
+                }
+
+                3 -> {
+                    activity.finishToMain()
+                }
+            }
+        }
     }
 
 }
\ No newline at end of file

app/src/main/java/com/base/pdfviewerscannerwhite/ui/permission/PermissionActivity.kt

 package com.base.pdfviewerscannerwhite.ui.permission
 
 import android.annotation.SuppressLint
+import android.content.Intent
 import android.graphics.Color
 import android.os.Build
 import android.os.Environment
@@ -14,6 +15,8 @@ import androidx.core.view.updatePadding
 import com.base.pdfviewerscannerwhite.R
 import com.base.pdfviewerscannerwhite.databinding.ActivityPermissionBinding
 import com.base.pdfviewerscannerwhite.helper.BaseActivity
+import com.base.pdfviewerscannerwhite.ui.guide.GuideActivity
+import com.base.pdfviewerscannerwhite.utils.AppPreferences
 import com.base.pdfviewerscannerwhite.utils.BarUtils
 import com.base.pdfviewerscannerwhite.utils.PermissionUtils.requestStoragePermission
 import kotlinx.coroutines.MainScope
@@ -52,7 +55,13 @@ class PermissionActivity : BaseActivity<ActivityPermissionBinding>() {
     override fun initListener() {
         super.initListener()
         onBackPressedDispatcher.addCallback {
-            finishToMain()
+            val isGuide = AppPreferences.getInstance().getBoolean("isGuide", false)
+            if (!isGuide) {
+                AppPreferences.getInstance().put("isGuide", true)
+                startActivity(Intent(this@PermissionActivity, GuideActivity::class.java))
+            } else {
+                finishToMain()
+            }
         }
         binding.tvLater.setOnClickListener {
             onBackPressedDispatcher.onBackPressed()
@@ -60,7 +69,7 @@ class PermissionActivity : BaseActivity<ActivityPermissionBinding>() {
         binding.tvAllow.setOnClickListener {
             requestStoragePermission(launcher, jumpAction = {
                 MainScope().launch {
-                    if(!delayOpen()){
+                    if (!delayOpen()) {
                         delayOpen()
                     }
                 }
@@ -71,7 +80,7 @@ class PermissionActivity : BaseActivity<ActivityPermissionBinding>() {
     }
 
     @RequiresApi(Build.VERSION_CODES.R)
-    private suspend fun delayOpen():Boolean{
+    private suspend fun delayOpen(): Boolean {
         delay(600)
         if (Environment.isExternalStorageManager()) {
             onBackPressedDispatcher.onBackPressed()

app/src/main/res/drawable/bg_00b8de_ffffff.xml

@@ -2,8 +2,10 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
 
     <gradient
+
+        android:centerY="0.1"
         android:angle="-90"
-        android:endColor="#00ffffff"
+        android:endColor="#ffffff"
         android:startColor="#00B8DE" />
     <corners
         android:topLeftRadius="20dp"

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

@@ -8,4 +8,10 @@
     android:background="@color/white"
     tools:context=".ui.guide.GuideActivity">
 
+    <androidx.viewpager2.widget.ViewPager2
+        android:id="@+id/viewPager2"
+        android:visibility="invisible"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

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

@@ -3,15 +3,25 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:background="@color/transparent">
 
     <View
         android:layout_width="match_parent"
-        android:layout_height="100dp"
+        android:layout_height="0dp"
+        android:layout_marginTop="20dp"
+        android:background="@color/white"
+        app:layout_constraintBottom_toBottomOf="@id/ll"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <View
+        android:id="@+id/v"
+        android:layout_width="match_parent"
+        android:layout_height="60dp"
         android:background="@drawable/bg_00b8de_ffffff"
         app:layout_constraintTop_toTopOf="parent" />
 
+
     <ImageView
         android:id="@+id/iv_close"
         android:layout_width="wrap_content"
@@ -23,6 +33,7 @@
         tools:ignore="ContentDescription" />
 
     <LinearLayout
+        android:id="@+id/ll"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
@@ -48,6 +59,7 @@
             tools:ignore="ContentDescription" />
 
         <TextView
+            android:id="@+id/tvView"
             android:layout_width="250dp"
             android:layout_height="50dp"
             android:layout_gravity="center_horizontal"

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

@@ -47,6 +47,7 @@
         android:orientation="vertical">
 
         <TextView
+            android:id="@+id/tv1"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="center"
@@ -56,6 +57,7 @@
             android:textStyle="bold" />
 
         <TextView
+            android:id="@+id/tv2"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="6dp"
@@ -76,6 +78,7 @@
 
 
     <TextView
+        android:id="@+id/tvBtn"
         android:layout_width="250dp"
         android:layout_height="50dp"
         android:layout_gravity="center_horizontal"

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

@@ -56,7 +56,7 @@
                     tools:ignore="ContentDescription" />
 
                 <TextView
-                    android:id="@+id/ad_advertiser"
+                    android:id="@+id/ad_body"
                     android:layout_width="0dp"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center_vertical"

app/src/main/res/values/strings.xml

@@ -371,6 +371,9 @@
     <string name="hello_blank_fragment">Hello blank fragment</string>
     <string name="easy_and_immersive_to_read">Easy and immersive to read</string>
     <string name="go_to_start">Go to start !</string>
+    <string name="supports_pdf_doc_excel_ppt">Supports PDF,DOC,EXCEL,PPT</string>
+    <string name="pdf_toolkit_solutions">PDF Toolkit Solutions</string>
+    <string name="convert_multiple_file_types">Convert multiple file types</string>
 
 
 </resources>
\ No newline at end of file