如何在没有提示的情况下以编程方式安装android应用， [英] How to Install android app programatically without prompt,

问题描述

我试图以编程方式在没有提示的情况下安装应用程序.意味着在安装应用程序时不会显示弹出窗口，用户无需在其中按安装选项. 我遵循了这的答案. 但是每当我运行代码时，它都会引发错误

I am trying to install the application programatically without prompt. Means, installing the app without showing the pop-up where user has to press install option. I followed THIS answer. But whenever I am running the code, it is throwing the error

java.io.IOException:运行exec()时出错.命令:[su，-c，adb 安装-r/storage/emulated/0/update.apk]工作目录:null 环境:null

java.io.IOException: Error running exec(). Command: [su, -c, adb install -r /storage/emulated/0/update.apk] Working Directory: null Environment: null

由以下原因引起:java.io.IOException:权限被拒绝 在java.lang.ProcessManager.exec(本地方法) 在java.lang.ProcessManager.exec(ProcessManager.java:209)

Caused by: java.io.IOException: Permission denied at java.lang.ProcessManager.exec(Native Method) at java.lang.ProcessManager.exec(ProcessManager.java:209)

它说权限被拒绝"，但不告诉是哪个权限.该apk位于设备的存储中，并且我已在清单中提供了以下权限.

It says Permission denied, but doesn't tell which permission. The apk is in the storage of the device and I have provided following permissions in the manifest.

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

以下是我用于安装apk的代码

Following is the code that I use for installing the apk

 public void InstallAPK(String filename){
    File file = new File(filename);
    if(file.exists()){
        try {
            String command;
            command = "adb install -r " + filename;
            Process proc = Runtime.getRuntime().exec(new String[] { "su", "-c", command });
            proc.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

我将此函数称为:

InstallAPK(Environment.getExternalStorageDirectory().getAbsolutePath()+"/update.apk");

有人可以请我帮忙吗?

推荐答案

您正在做的问题是，为了获得INSTALL_PACKAGES权限，您的应用程序必须位于/system/priv-app文件夹中.如果您的应用程序不在该文件夹中，则不会授予您权限，并且您的应用程序将失败.

The problem with what you are doing is that in order to get the INSTALL_PACKAGES permission your application has to be in the /system/priv-app folder. If your application is not in that folder then you will not be granted the permission and your application will fail.

另一种以编程方式安装应用程序而无需提示您具有root用户访问权限的方式如下:

Another way to install an app programatically without prompts assuming you have root access would be as follows:

首先，您必须将此权限添加到您的android清单中. <uses-permission android:name="android.permission.INSTALL_PACKAGES" /> Android Studio可能会抱怨这是系统权限，不会被授予.不用担心，由于您的应用程序将被安装到/system/priv-app文件夹中，因此它将获得该系统的唯一许可.

First you must add this permission to your android manifest. <uses-permission android:name="android.permission.INSTALL_PACKAGES" /> Android studio may complain that this is a system permission and won't be granted. Don't worry, since your app is going to be installed to the /system/priv-app folder, it will get this system only permission.

添加权限后，您可以使用以下静态方法来安装软件包.您需要做的就是提供一个String网址，该网址可用于访问该文件，并Context和该应用程序将被安装.

After adding permission you can use the following static method to install packages. All you need to do is provide a url as a String that can be used to access the file, and a Context and the application will be installed.

 public static boolean installPackage(final Context context, final String url)
        throws IOException {
    //Use an async task to run the install package method
    AsyncTask<Void,Void,Void> task = new AsyncTask<Void, Void, Void>() {
        @Override
        protected Void doInBackground(Void... voids) {
            try {
                PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
                PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(
                        PackageInstaller.SessionParams.MODE_FULL_INSTALL);

                // set params
                int sessionId = packageInstaller.createSession(params);
                PackageInstaller.Session session = packageInstaller.openSession(sessionId);
                OutputStream out = session.openWrite("COSU", 0, -1);
                //get the input stream from the url
                HttpsURLConnection apkConn = (HttpsURLConnection) new URL(url).openConnection();
                InputStream in = apkConn.getInputStream();
                byte[] buffer = new byte[65536];
                int c;
                while ((c = in.read(buffer)) != -1) {
                    out.write(buffer, 0, c);
                }
                session.fsync(out);
                in.close();
                out.close();
                //you can replace this intent with whatever intent you want to be run when the applicaiton is finished installing
                //I assume you have an activity called InstallComplete
                Intent intent = new Intent(context, InstallComplete.class);
                intent.putExtra("info", "somedata");  // for extra data if needed..
                Random generator = new Random();
                PendingIntent i = PendingIntent.getActivity(context, generator.nextInt(), intent, PendingIntent.FLAG_UPDATE_CURRENT);
                session.commit(i.getIntentSender());
            } catch (Exception ex){
                Log.e("AppStore","Error when installing application. Error is " + ex.getMessage());
            }

            return null;
        }
    };
   task.execute(null,null);
    return true;
}

注意:即使安装程序应用程序位于system/priv-app中，如果安装失败，则请确保已使用发布密钥对应用程序进行了签名.有时使用调试密钥签名将阻止授予Install_Packages权限

Note: If the installation fails even though the installer app is located in system/priv-app then ensure that you have signed the app with a release key. Sometimes signing with a debug key will prevent the Install_Packages permission from being granted

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