first version

app/.gitignore

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+/build

app/build.gradle.kts

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+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    compileSdk = 32
+
+    defaultConfig {
+        applicationId = "pub.chara.disablealttab"
+        minSdk = 30
+        targetSdk = 32
+        versionCode = 1
+        versionName = "1"
+    }
+
+    buildTypes {
+        named("release") {
+            isShrinkResources = true
+            isMinifyEnabled = true
+            proguardFiles("proguard-rules.pro")
+        }
+    }
+
+    androidResources {
+        additionalParameters("--allow-reserved-package-id", "--package-id", "0x45")
+    }
+
+    packagingOptions {
+        resources {
+            excludes += "/META-INF/**"
+            excludes += "/kotlin/**"
+            excludes += "/*.txt"
+            excludes += "/*.bin"
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_11.toString()
+    }
+}
+
+dependencies {
+    implementation("com.github.kyuubiran:EzXHelper:0.9.2")
+    compileOnly("de.robv.android.xposed:api:82")
+}

app/proguard-rules.pro

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+-keep class pub.chara.disablealttab.MainHook

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="pub.chara.disablealttab">
+
+    <application
+        android:icon="@android:drawable/sym_def_app_icon"
+        android:label="@string/app_name"
+        android:roundIcon="@android:drawable/sym_def_app_icon">
+        <meta-data
+            android:name="xposedmodule"
+            android:value="true" />
+        <meta-data
+            android:name="xposeddescription"
+            android:value="@string/xposed_desc" />
+        <meta-data
+            android:name="xposedminversion"
+            android:value="93" />
+        <!-- xposed-scope here -->
+        <meta-data
+            android:name="xposedscope"
+            android:resource="@array/xposedscope" />
+    </application>
+
+</manifest>

app/src/main/assets/xposed_init

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+pub.chara.disablealttab.MainHook

app/src/main/java/pub/chara/disablealttab/MainHook.kt

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+package pub.chara.disablealttab
+
+import android.os.Build
+import com.github.kyuubiran.ezxhelper.init.EzXHelperInit
+import com.github.kyuubiran.ezxhelper.utils.Log
+import com.github.kyuubiran.ezxhelper.utils.Log.logexIfThrow
+import de.robv.android.xposed.IXposedHookLoadPackage
+import de.robv.android.xposed.XposedBridge
+import de.robv.android.xposed.callbacks.XC_LoadPackage
+import pub.chara.disablealttab.hook.*
+
+private const val PACKAGE_NAME_HOOKED = "android"
+private const val TAG = "DisableAltTab"
+
+class MainHook : IXposedHookLoadPackage {
+    override fun handleLoadPackage(lpparam: XC_LoadPackage.LoadPackageParam) {
+        if (lpparam.packageName == PACKAGE_NAME_HOOKED) {
+            // Init EzXHelper
+            EzXHelperInit.initHandleLoadPackage(lpparam)
+            EzXHelperInit.setLogTag(TAG)
+            EzXHelperInit.setToastTag(TAG)
+            initHooks(AltTabHook)
+        }
+    }
+
+    private fun initHooks(vararg hook: BaseHook) {
+        hook.forEach {
+            runCatching {
+                if (it.isInit) return@forEach
+                it.init()
+                it.isInit = true
+                Log.i("Inited hook: ${it.javaClass.simpleName}")
+            }.logexIfThrow("Failed init hook: ${it.javaClass.simpleName}")
+        }
+    }
+}

app/src/main/java/pub/chara/disablealttab/hook/AltTabHook.kt

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+package pub.chara.disablealttab.hook
+
+import android.view.KeyEvent
+import com.github.kyuubiran.ezxhelper.utils.*
+import de.robv.android.xposed.XposedBridge
+
+object AltTabHook : BaseHook() {
+    override fun init() {
+        try {
+            //disable alt-tab
+            //this works for any android version
+            findMethod("com.android.server.policy.PhoneWindowManager") {
+                name == "interceptKeyBeforeDispatching"
+            }.hookBefore { param ->
+                run {
+                    val arg1: KeyEvent = param.args[1] as KeyEvent;
+                    // alt-tab
+                    if ((arg1.isAltPressed && arg1.keyCode == 61)) {
+                        param.result = 0L;
+                    }
+                }
+            }
+            XposedBridge.log("MiuiPadMeta: AltTabHook success!")
+        } catch (e: Throwable) {
+            XposedBridge.log("MiuiPadMeta: AltTabHook failed!")
+            XposedBridge.log(e)
+        }
+    }
+}

app/src/main/java/pub/chara/disablealttab/hook/BaseHook.kt

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+package pub.chara.disablealttab.hook
+
+abstract class BaseHook {
+    var isInit: Boolean = false
+    abstract fun init()
+}

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

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string-array name="xposedscope">
+    <item>android</item>
+    </string-array>
+</resources>

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

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+<resources>
+    <string name="app_name">MiuiPadMeta</string>
+    <string name="xposed_desc">A Xposed module to disable Alt-Tab hotkey for generic android devices.</string>
+</resources>