Initial commit

2023-09-07 18:51:22 +02:00
commit 2eed6345fd
51 changed files with 2009 additions and 0 deletions
--- a/android/.gitignore
+++ b/android/.gitignore
@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.cxx
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -0,0 +1,51 @@
+group 'org.moxxy.moxxy_native'
+version '1.0-SNAPSHOT'
+
+buildscript {
+    ext.kotlin_version = '1.8.21'
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:7.1.2'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+
+android {
+    compileSdkVersion 33
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    defaultConfig {
+        minSdkVersion 26
+    }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation "androidx.activity:activity-ktx:1.7.2"
+}
--- a/android/gradle/wrapper/gradle-wrapper.jar
+++ b/android/gradle/wrapper/gradle-wrapper.jar
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/android/gradlew
+++ b/android/gradlew
@@ -0,0 +1,240 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/android/gradlew.bat
+++ b/android/gradlew.bat
@@ -0,0 +1,91 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/android/settings.gradle
+++ b/android/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'moxxy_native'
--- a/android/src/main/AndroidManifest.xml
+++ b/android/src/main/AndroidManifest.xml
@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="org.moxxy.moxxy_native">
+</manifest>
--- a/android/src/main/kotlin/org/moxxy/moxxy_native/AsyncRequestTracker.kt
+++ b/android/src/main/kotlin/org/moxxy/moxxy_native/AsyncRequestTracker.kt
@@ -0,0 +1,5 @@
+package org.moxxy.moxxy_native
+
+object AsyncRequestTracker {
+    val requestTracker: MutableMap<Int, (Result<Any>) -> Unit> = mutableMapOf()
+}
--- a/android/src/main/kotlin/org/moxxy/moxxy_native/Constants.kt
+++ b/android/src/main/kotlin/org/moxxy/moxxy_native/Constants.kt
@@ -0,0 +1,8 @@
+package org.moxxy.moxxy_native
+
+const val TAG = "moxxy_native"
+
+// Request codes
+const val PICK_FILE_REQUEST = 42
+const val PICK_FILES_REQUEST = 43
+const val PICK_FILE_WITH_DATA_REQUEST = 44
--- a/android/src/main/kotlin/org/moxxy/moxxy_native/MoxxyNativePlugin.kt
+++ b/android/src/main/kotlin/org/moxxy/moxxy_native/MoxxyNativePlugin.kt
@@ -0,0 +1,110 @@
+package org.moxxy.moxxy_native
+
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.util.Log
+import androidx.activity.result.PickVisualMediaRequest
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.annotation.NonNull
+
+import io.flutter.embedding.engine.plugins.FlutterPlugin
+import io.flutter.embedding.engine.plugins.activity.ActivityAware
+import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding
+import org.moxxy.moxxy_native.generated.FilePickerType
+import org.moxxy.moxxy_native.generated.MoxxyPickerApi
+import org.moxxy.moxxy_native.picker.PickerResultListener
+
+class MoxxyNativePlugin: FlutterPlugin, ActivityAware, MoxxyPickerApi {
+  private var context: Context? = null
+  private var activity: Activity? = null
+  private lateinit var pickerListener: PickerResultListener
+
+  override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
+    context = flutterPluginBinding.applicationContext
+    MoxxyPickerApi.setUp(flutterPluginBinding.binaryMessenger, this)
+    pickerListener = PickerResultListener(context!!)
+    Log.d(TAG, "Attached to engine")
+  }
+
+  override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
+    Log.d(TAG, "Detached from engine")
+  }
+
+  override fun onAttachedToActivity(binding: ActivityPluginBinding) {
+    activity = binding.activity
+    binding.addActivityResultListener(pickerListener)
+    Log.d(TAG, "Attached to activity")
+  }
+
+  override fun onDetachedFromActivityForConfigChanges() {
+    activity = null
+    Log.d(TAG, "Detached from activity")
+  }
+
+  override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) {
+    activity = binding.activity
+  }
+
+  override fun onDetachedFromActivity() {
+    activity = null
+    Log.d(TAG, "Detached from activity")
+  }
+
+  override fun pickFiles(
+    type: FilePickerType,
+    multiple: Boolean,
+    callback: (Result<List<String>>) -> Unit
+  ) {
+    val requestCode = if (multiple) PICK_FILES_REQUEST else PICK_FILE_REQUEST
+    AsyncRequestTracker.requestTracker[requestCode] = callback as (Result<Any>) -> Unit
+    if (type == FilePickerType.GENERIC) {
+      val pickIntent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
+        addCategory(Intent.CATEGORY_OPENABLE)
+        this.type = "*/*"
+
+        // Allow/disallow picking multiple files
+        putExtra(Intent.EXTRA_ALLOW_MULTIPLE, multiple)
+      }
+      activity?.startActivityForResult(pickIntent, requestCode)
+      return
+    }
+
+    val contract = when (multiple) {
+      false -> ActivityResultContracts.PickVisualMedia()
+      true -> ActivityResultContracts.PickMultipleVisualMedia()
+    }
+    val pickType = when (type) {
+      // We keep FilePickerType.GENERIC here, even though we know that @type will never be
+      // GENERIC to make Kotlin happy.
+      FilePickerType.GENERIC, FilePickerType.IMAGE -> ActivityResultContracts.PickVisualMedia.ImageOnly
+      FilePickerType.VIDEO -> ActivityResultContracts.PickVisualMedia.VideoOnly
+      FilePickerType.IMAGEANDVIDEO -> ActivityResultContracts.PickVisualMedia.ImageAndVideo
+    }
+    val pickIntent = contract.createIntent(context!!, PickVisualMediaRequest(pickType))
+    activity?.startActivityForResult(pickIntent, requestCode)
+  }
+
+  override fun pickFileWithData(type: FilePickerType, callback: (Result<ByteArray?>) -> Unit) {
+    AsyncRequestTracker.requestTracker[PICK_FILE_WITH_DATA_REQUEST] = callback as (Result<Any>) -> Unit
+    if (type == FilePickerType.GENERIC) {
+      val pickIntent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
+        addCategory(Intent.CATEGORY_OPENABLE)
+        this.type = "*/*"
+      }
+      activity?.startActivityForResult(pickIntent, PICK_FILE_WITH_DATA_REQUEST)
+      return
+    }
+
+    val pickType = when (type) {
+      // We keep FilePickerType.GENERIC here, even though we know that @type will never be
+      // GENERIC to make Kotlin happy.
+      FilePickerType.GENERIC, FilePickerType.IMAGE -> ActivityResultContracts.PickVisualMedia.ImageOnly
+      FilePickerType.VIDEO -> ActivityResultContracts.PickVisualMedia.VideoOnly
+      FilePickerType.IMAGEANDVIDEO -> ActivityResultContracts.PickVisualMedia.ImageAndVideo
+    }
+    val contract = ActivityResultContracts.PickVisualMedia()
+    val pickIntent = contract.createIntent(context!!, PickVisualMediaRequest(pickType))
+    activity?.startActivityForResult(pickIntent, PICK_FILE_WITH_DATA_REQUEST)
+  }
+}
--- a/android/src/main/kotlin/org/moxxy/moxxy_native/generated/PickerApi.kt
+++ b/android/src/main/kotlin/org/moxxy/moxxy_native/generated/PickerApi.kt
@@ -0,0 +1,130 @@
+// Autogenerated from Pigeon (v11.0.1), do not edit directly.
+// See also: https://pub.dev/packages/pigeon
+
+package org.moxxy.moxxy_native.generated
+
+import android.util.Log
+import io.flutter.plugin.common.BasicMessageChannel
+import io.flutter.plugin.common.BinaryMessenger
+import io.flutter.plugin.common.MessageCodec
+import io.flutter.plugin.common.StandardMessageCodec
+import java.io.ByteArrayOutputStream
+import java.nio.ByteBuffer
+
+private fun wrapResult(result: Any?): List<Any?> {
+  return listOf(result)
+}
+
+private fun wrapError(exception: Throwable): List<Any?> {
+  if (exception is FlutterError) {
+    return listOf(
+      exception.code,
+      exception.message,
+      exception.details
+    )
+  } else {
+    return listOf(
+      exception.javaClass.simpleName,
+      exception.toString(),
+      "Cause: " + exception.cause + ", Stacktrace: " + Log.getStackTraceString(exception)
+    )
+  }
+}
+
+/**
+ * Error class for passing custom error details to Flutter via a thrown PlatformException.
+ * @property code The error code.
+ * @property message The error message.
+ * @property details The error details. Must be a datatype supported by the api codec.
+ */
+class FlutterError (
+  val code: String,
+  override val message: String? = null,
+  val details: Any? = null
+) : Throwable()
+
+enum class FilePickerType(val raw: Int) {
+  /** Pick only image(s) */
+  IMAGE(0),
+  /** Pick only video(s) */
+  VIDEO(1),
+  /** Pick image(s) and video(s) */
+  IMAGEANDVIDEO(2),
+  /** Pick any kind of file(s) */
+  GENERIC(3);
+
+  companion object {
+    fun ofRaw(raw: Int): FilePickerType? {
+      return values().firstOrNull { it.raw == raw }
+    }
+  }
+}
+
+/** Generated interface from Pigeon that represents a handler of messages from Flutter. */
+interface MoxxyPickerApi {
+  /**
+   * Open either the photo picker or the generic file picker to get a list of paths that were
+   * selected and are accessable. If the list is empty, then the user dismissed the picker without
+   * selecting anything.
+   *
+   * [type] specifies what kind of file(s) should be picked.
+   *
+   * [multiple] controls whether multiple files can be picked (true) or just a single file
+   * is enough (false).
+   */
+  fun pickFiles(type: FilePickerType, multiple: Boolean, callback: (Result<List<String>>) -> Unit)
+  /** Like [pickFiles] but sets multiple to false and returns the raw binary data from the file. */
+  fun pickFileWithData(type: FilePickerType, callback: (Result<ByteArray?>) -> Unit)
+
+  companion object {
+    /** The codec used by MoxxyPickerApi. */
+    val codec: MessageCodec<Any?> by lazy {
+      StandardMessageCodec()
+    }
+    /** Sets up an instance of `MoxxyPickerApi` to handle messages through the `binaryMessenger`. */
+    @Suppress("UNCHECKED_CAST")
+    fun setUp(binaryMessenger: BinaryMessenger, api: MoxxyPickerApi?) {
+      run {
+        val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.moxxy_native.MoxxyPickerApi.pickFiles", codec)
+        if (api != null) {
+          channel.setMessageHandler { message, reply ->
+            val args = message as List<Any?>
+            val typeArg = FilePickerType.ofRaw(args[0] as Int)!!
+            val multipleArg = args[1] as Boolean
+            api.pickFiles(typeArg, multipleArg) { result: Result<List<String>> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(wrapResult(data))
+              }
+            }
+          }
+        } else {
+          channel.setMessageHandler(null)
+        }
+      }
+      run {
+        val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.moxxy_native.MoxxyPickerApi.pickFileWithData", codec)
+        if (api != null) {
+          channel.setMessageHandler { message, reply ->
+            val args = message as List<Any?>
+            val typeArg = FilePickerType.ofRaw(args[0] as Int)!!
+            api.pickFileWithData(typeArg) { result: Result<ByteArray?> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(wrapResult(data))
+              }
+            }
+          }
+        } else {
+          channel.setMessageHandler(null)
+        }
+      }
+    }
+  }
+}
--- a/android/src/main/kotlin/org/moxxy/moxxy_native/picker/PickerResultListener.kt
+++ b/android/src/main/kotlin/org/moxxy/moxxy_native/picker/PickerResultListener.kt
@@ -0,0 +1,177 @@
+package org.moxxy.moxxy_native.picker
+
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.provider.OpenableColumns
+import android.util.Log
+import io.flutter.plugin.common.PluginRegistry.ActivityResultListener
+import org.moxxy.moxxy_native.AsyncRequestTracker
+import org.moxxy.moxxy_native.PICK_FILES_REQUEST
+import org.moxxy.moxxy_native.PICK_FILE_REQUEST
+import org.moxxy.moxxy_native.PICK_FILE_WITH_DATA_REQUEST
+import org.moxxy.moxxy_native.TAG
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.InputStream
+import java.io.OutputStream
+
+class PickerResultListener(private val context: Context) : ActivityResultListener {
+    /*
+     * Attempt to deduce the filename for the URI @uri.
+     * Based on https://stackoverflow.com/a/25005243
+     */
+    @SuppressLint("Range")
+    private fun queryFileName(context: Context, uri: Uri): String {
+        var result: String? = null
+        if (uri.scheme == "content") {
+            val cursor = context.contentResolver.query(uri, null, null, null, null)
+            cursor.use { cursor ->
+                if (cursor != null && cursor.moveToFirst()) {
+                    result = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME))
+                }
+            }
+        }
+
+        return result ?: uri.path!!.split("/").last()
+    }
+
+    /*
+     * Copy from the input stream @input to the output stream @output.
+     * On Android >= 13 uses Android's own copy method. Below, reads the stream in 4096 byte
+     * segments and write them back.
+     *
+     * Based on https://github.com/flutter/packages/blob/b8b84b2304f00a3f93ce585cc7a30e1235bde7a0/packages/image_picker/image_picker_android/android/src/main/java/io/flutter/plugins/imagepicker/FileUtils.java#L130
+     */
+    private fun copy(input: InputStream, output: OutputStream) {
+        if (Build.VERSION.SDK_INT >= 33) {
+            android.os.FileUtils.copy(input, output)
+        } else {
+            val buffer = ByteArray(4096)
+            while (input.read(buffer).also {} != -1) {
+                output.write(buffer)
+            }
+            output.flush()
+        }
+    }
+
+    /*
+     * Copy the content of the file @uri is pointing to into the cache directory for access from
+     * within Flutter.
+     *
+     * Based on https://github.com/flutter/packages/blob/b8b84b2304f00a3f93ce585cc7a30e1235bde7a0/packages/image_picker/image_picker_android/android/src/main/java/io/flutter/plugins/imagepicker/FileUtils.java#L54C64-L54C64
+     */
+    private fun resolveContentUri(context: Context, uri: Uri): String? {
+        try {
+            val inputStream = context.contentResolver.openInputStream(uri)
+            val cacheDir = File(context.cacheDir, "cache").apply {
+                mkdir()
+                deleteOnExit()
+            }
+            val cacheFile = File(cacheDir, queryFileName(context, uri))
+            val outputStream = FileOutputStream(cacheFile)
+            copy(inputStream!!, outputStream)
+
+            return cacheFile.path
+        } catch (ex: IOException) {
+            Log.d(TAG, "IO exception while resolving URI $uri: ${ex.message}")
+            return null
+        } catch (ex: SecurityException) {
+            Log.d(TAG, "Security exception while resolving URI $uri: ${ex.message}")
+            return null
+        }
+    }
+
+    private fun handlePickWithData(context: Context, resultCode: Int, data: Intent?, result: (Result<ByteArray?>) -> Unit) {
+        // Handle not picking anything
+        if (resultCode != Activity.RESULT_OK) {
+            result(Result.success(null))
+            return
+        }
+
+        val returnBuffer = mutableListOf<Byte>()
+        val readBuffer = ByteArray(4096)
+        try {
+            val inputStream = context.contentResolver.openInputStream(data!!.data!!)!!
+            while (inputStream.read(readBuffer).also {} != -1) {
+                returnBuffer.addAll(readBuffer.asList())
+            }
+            inputStream.close()
+
+            result(
+                Result.success(returnBuffer.toByteArray()),
+            )
+        } catch (ex: IOException) {
+            Log.w(TAG, "IO exception while reading URI ${data!!.data}: ${ex.message}")
+            result(Result.success(null))
+        } catch (ex: SecurityException) {
+            Log.w(TAG, "Security exception while reading URI ${data!!.data}: ${ex.message}")
+            result(Result.success(null))
+        }
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?): Boolean {
+        Log.d(TAG, "Got result for $requestCode")
+        if (requestCode != PICK_FILE_REQUEST && requestCode != PICK_FILES_REQUEST && requestCode != PICK_FILE_WITH_DATA_REQUEST) {
+            Log.d(TAG, "Unknown result code")
+            return false
+        }
+
+        // Check if we have a request pending
+        val result = AsyncRequestTracker.requestTracker.remove(requestCode)
+        if (result == null) {
+            Log.w(TAG, "Received result for $requestCode but we have no tracked request")
+            return true
+        }
+
+        if (requestCode == PICK_FILE_WITH_DATA_REQUEST) {
+            handlePickWithData(context, resultCode, data, result as (Result<ByteArray?>) -> Unit)
+            return true
+        }
+
+        // No file(s) picked
+        if (resultCode != Activity.RESULT_OK) {
+            Log.d(TAG, "resultCode $resultCode != ${Activity.RESULT_OK}")
+            result!!(Result.success(listOf<String>()))
+            return true
+        }
+
+        val pickedMultiple = requestCode == PICK_FILES_REQUEST
+        val pickedFiles = mutableListOf<String>()
+        if (pickedMultiple) {
+            if (data!!.clipData != null) {
+                Log.w(TAG, "Files shared: ${data!!.clipData!!.itemCount}")
+                for (i in 0 until data!!.clipData!!.itemCount) {
+                    val path = resolveContentUri(context, data!!.clipData!!.getItemAt(i).uri)
+                    if (path != null) {
+                        pickedFiles.add(path)
+                    }
+                }
+            } else if (data!!.data != null) {
+                // Handle the generic file picker with multiple=true returning only one file
+                val path = resolveContentUri(context, data!!.data!!)
+                if (path != null) {
+                    pickedFiles.add(path)
+                }
+            } else {
+                Log.w(TAG, "Multi-file intent has no clipData and data")
+            }
+        } else {
+            if (data!!.data != null) {
+                val path = resolveContentUri(context, data!!.data!!)
+                if (path != null) {
+                    pickedFiles.add(path)
+                }
+            } else {
+                Log.w(TAG, "Single-file intent has no data")
+            }
+        }
+
+        result!!(Result.success(pickedFiles))
+        return true
+    }
+}