Android development, if installing and updating APK files within the application?

[Jason0247]

The function implemented by the following code is: for Android system development, click the button to download an APK file from the server, and then open the APK file to update the application.
In some app applications, it is common to see cases where the APK is downloaded internally during updates and can be installed directly after the download is complete. Although the system will display a warning prompt during installation, users can manually click on trust to continue the installation.
I want to implement this function through the Air SDK. Strangely, after downloading the APK and opening it, the system will pop up the installation method selection, but there is no option to install the APK. Instead, there are two ways to open it: "Notes" and "Security Tips".
I would like to know how to implement the above functions? Is there something not set correctly?
thank you.

`import flash.filesystem.*;

// 主时间线上的代码
stop();

// 创建UI元素
createUI();

function createUI():void {
// 下载按钮
var downloadBtn:Sprite = createButton("下载并安装更新", 0x3498db);
downloadBtn.x = (stage.stageWidth - downloadBtn.width) / 2;
downloadBtn.y = (stage.stageHeight - downloadBtn.height) / 2;
addChild(downloadBtn);

// 进度显示
var progressText:TextField = new TextField();
progressText.width = stage.stageWidth;
progressText.y = downloadBtn.y + downloadBtn.height + 20;
progressText.textColor = 0x000000;
addChild(progressText);

downloadBtn.addEventListener(MouseEvent.CLICK, function(e:MouseEvent):void {
    downloadAndInstallAPK("https://www.yuntuomedia.com/Test.apk", "update.apk", progressText);
});

}

function createButton(label:String, color:uint = 0x3498db):Sprite {
var btn:Sprite = new Sprite();
btn.graphics.beginFill(color);
btn.graphics.drawRoundRect(0, 0, 200, 60, 10);
btn.graphics.endFill();

var btnText:TextField = new TextField();
btnText.text = label;
btnText.width = 200;
btnText.height = 60;
btnText.textColor = 0xFFFFFF;
btnText.selectable = false;
btnText.y = 10;
btnText.x = 10;
btn.addChild(btnText);

return btn;

}

function downloadAndInstallAPK(apkUrl:String, apkName:String, progressText:TextField):void {
var apkFile:File = File.applicationStorageDirectory.resolvePath(apkName);

// 如果文件已存在，直接安装
if (apkFile.exists) {
    progressText.text = "发现已下载文件，准备安装...";
    installAPK(apkFile, progressText);
    return;
}

var urlStream:URLStream = new URLStream();
var fileStream:FileStream = new FileStream();

urlStream.addEventListener(ProgressEvent.PROGRESS, function(e:ProgressEvent):void {
    var percent:Number = Math.round((e.bytesLoaded / e.bytesTotal) * 100);
    progressText.text = "下载中: " + percent + "%";
});

urlStream.addEventListener(Event.COMPLETE, function(e:Event):void {
    try {
        fileStream.open(apkFile, FileMode.WRITE);
        var bytes:ByteArray = new ByteArray();
        urlStream.readBytes(bytes);
        fileStream.writeBytes(bytes);
        fileStream.close();
        progressText.text = "下载完成，准备安装...";
        installAPK(apkFile, progressText);
    } catch (e:Error) {
        progressText.text = "文件保存错误: " + e.message;
    } finally {
        urlStream.close();
    }
});

urlStream.addEventListener(IOErrorEvent.IO_ERROR, function(e:IOErrorEvent):void {
    progressText.text = "下载错误: " + e.text;
});

progressText.text = "开始下载...";
try {
    urlStream.load(new URLRequest(apkUrl));
} catch (e:Error) {
    progressText.text = "下载启动错误: " + e.message;
}

}

function installAPK(apkFile:File, progressText:TextField):void {
// 方法1: 使用openWithDefaultApplication
try {
apkFile.openWithDefaultApplication();
progressText.text = "正在启动安装程序...";
return;
} catch (e:Error) {
trace("openWithDefaultApplication失败: " + e.message);
}

// 方法2: 使用navigateToURL
try {
    navigateToURL(new URLRequest("file://" + apkFile.nativePath));
    progressText.text = "正在尝试安装...";
    return;
} catch (e:Error) {
    trace("navigateToURL失败: " + e.message);
}

// 方法3: 使用NativeProcess (如果支持)
if (NativeProcess.isSupported) {
    try {
        var nativeProcessStartupInfo:NativeProcessStartupInfo = new NativeProcessStartupInfo();
        var processArgs:Vector.<String> = new Vector.<String>();
        
        processArgs.push("am");
        processArgs.push("start");
        processArgs.push("-a");
        processArgs.push("android.intent.action.VIEW");
        processArgs.push("-t");
        processArgs.push("application/vnd.android.package-archive");
        processArgs.push("-d");
        processArgs.push("file://" + apkFile.nativePath);
        
        nativeProcessStartupInfo.arguments = processArgs;
        nativeProcessStartupInfo.executable = File.applicationDirectory.resolvePath("/system/bin/sh");
        
        var process:NativeProcess = new NativeProcess();
        process.start(nativeProcessStartupInfo);
        progressText.text = "正在通过NativeProcess安装...";
        return;
    } catch (error:Error) {
        trace("NativeProcess安装错误: " + error.message);
    }
}

// 所有方法都失败后的处理
progressText.text = "无法自动安装，文件已保存到: " + apkFile.nativePath;
showManualInstallAlert(apkFile, progressText);

}

function showManualInstallAlert(apkFile:File, progressText:TextField):void {
// 创建提示按钮
var alertBtn:Sprite = createButton("手动安装", 0xE74C3C);
alertBtn.x = (stage.stageWidth - alertBtn.width) / 2;
alertBtn.y = progressText.y + 40;
addChild(alertBtn);

alertBtn.addEventListener(MouseEvent.CLICK, function(e:MouseEvent):void {
    try {
        // 尝试打开文件所在目录
        apkFile.parent.openWithDefaultApplication();
        progressText.text = "正在打开文件目录...";
    } catch (e:Error) {
        progressText.text = "无法打开目录，请手动查找: " + apkFile.parent.nativePath;
    }
    
    // 移除按钮
    removeChild(alertBtn);
});

}

`

[Jason0247]

seek help! Does anyone understand? thank you!

[marchbold]

You can use my package manager extension for this:

https://docs.airnativeextensions.com/docs/packagemanager/installing-apps

It's freely available here:

https://github.com/airnativeextensions/ANE-PackageManager

[Jason0247]

Test.zip

When I tried to add ANE and package it for installation as required, the installation was normal, but when I opened the app, it immediately crashed.
May I ask what the reason is? thank you!

java.lang.RuntimeException: Unable to get provider com.distriqt.extension.packagemanager.content.PackageManagerFileProvider: java.lang.ClassNotFoundException: Didn't find class "com.distriqt.extension.packagemanager.content.PackageManagerFileProvider" on path: DexPathList[[zip file "/data/app/~~vQoDOy7KFLUUnHk4BCQnUw==/air.Test-6Abn-LpQcEdUAy9DRu8dhA==/base.apk"],nativeLibraryDirectories=[/data/app/~~vQoDOy7KFLUUnHk4BCQnUw==/air.Test-6Abn-LpQcEdUAy9DRu8dhA==/lib/arm64, /data/app/~~vQoDOy7KFLUUnHk4BCQnUw==/air.Test-6Abn-LpQcEdUAy9DRu8dhA==/base.apk!/lib/arm64-v8a, /system/lib64, /system_ext/lib64]]
	at android.app.ActivityThread.installProvider(ActivityThread.java:9144)
	at android.app.ActivityThread.installContentProviders(ActivityThread.java:8644)
	at android.app.ActivityThread.handleBindApplication(ActivityThread.java:8272)
	at android.app.ActivityThread.-$$Nest$mhandleBindApplication(Unknown Source:0)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2653)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loopOnce(Looper.java:249)
	at android.os.Looper.loop(Looper.java:337)
	at android.app.ActivityThread.main(ActivityThread.java:9580)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:593)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.distriqt.extension.packagemanager.content.PackageManagerFileProvider" on path: DexPathList[[zip file "/data/app/~~vQoDOy7KFLUUnHk4BCQnUw==/air.Test-6Abn-LpQcEdUAy9DRu8dhA==/base.apk"],nativeLibraryDirectories=[/data/app/~~vQoDOy7KFLUUnHk4BCQnUw==/air.Test-6Abn-LpQcEdUAy9DRu8dhA==/lib/arm64, /data/app/~~vQoDOy7KFLUUnHk4BCQnUw==/air.Test-6Abn-LpQcEdUAy9DRu8dhA==/base.apk!/lib/arm64-v8a, /system/lib64, /system_ext/lib64]]
	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:259)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:637)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
	at android.app.AppComponentFactory.instantiateProvider(AppComponentFactory.java:147)
	at android.app.ActivityThread.installProvider(ActivityThread.java:9128)
	... 11 more
	Suppressed: java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/content/FileProvider;
		at java.lang.VMClassLoader.findLoadedClass(Native Method)
		at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:1276)
		at java.lang.ClassLoader.loadClass(ClassLoader.java:621)
		... 14 more
	Caused by: java.lang.ClassNotFoundException: androidx.core.content.FileProvider
		... 17 more

@marchbold

[Jason0247]

Excuse me, is it set up here? thank you!

I have tried modifying adt.cfg to set JAVE-HOME to C: \ Users \ Administrator . jdks \ openjdk-ea-25, but the problem still hasn't been resolved.
I'm a bit confused now, I don't know where the problem lies and where to start.

I have correctly configured environment variables and tested their usability in CMD. The JDK version I downloaded is 24

Did the animate or air SDK still call an older version of the Java environment? How can I set it up so that he can use the latest SDK?

[ajwfrost]

Unfortunately JDK 24 or 25 might be too new! There are some odd compatibility things with Gradle, so it's always best to try to match whatever they do within Android Studio - mine is currently showing as JDK17:

> "c:\Program Files\Android\Android Studio\jbr\bin\java.exe" -version
openjdk version "17.0.10" 2024-01-16
OpenJDK Runtime Environment (build 17.0.10+0--11572160)
OpenJDK 64-Bit Server VM (build 17.0.10+0--11572160, mixed mode)

The other thing I'm wondering, your path there has got single backslash \ characters but that may cause a problem for the Java-based ADT to read it.. can you try editing to switch those all to forwardslash / characters?

thanks

[Jason0247]

It has been successfully installed, but when I tested whether it could be installed on different devices, PackageManagerial. service.canRequistApplication Installs showed false;
When I tested PackageManagerial. isSupported, it showed true
Excuse me, did I make a mistake in setting it up? Thank you for your help!

@marchbold

[marchbold]

Firstly, as Andrew mentioned, looks like you are trying to use too recent tools. Try installing:

• Java v17
• Android Build Tools: v34.0.0
• Android SDK: v14 (34)

Secondly, when canRequestApplicationInstalls returns false it means your user hasn't granted permission for your app to install apps. You need to redirect them to the settings by calling: PackageManager.service.showManageUnknownAppSourcesSettings();

See here for more: https://docs.airnativeextensions.com/docs/packagemanager/installing-apps#settings

[Jason0247]

Thank you for your help! When I call PackageManager. service. showManageUnknown App Sources Settings (); At that time, the authorization prompt did indeed pop up successfully. When I opened the application again, canRequestAppInstalls was set to 'ture'.
But when I downloaded the APK and called PackageManager. service. installApplication (apkFile. nativePath); At that time, there was no response from the phone and no installation operation was performed. I can ensure that this apk does indeed exist in the applicationStorage Directory.

[marchbold]

Can you grab the logs and post them here? using adb logcat

[Jason0247]

I succeeded, thank you! Permission is missing from the description file.
And the SDK has also been reinstalled once.

@marchbold @ajwfrost

[marchbold]

Great to hear!

I believe once your app has been granted this permission canRequestApplicationInstalls should return true so you shouldn't need to request it again, unless your user removes the permission.