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在之前这个抽源码实现9.0静默曾经是可以的https://www.jianshu.com/p/3013a64ce4b5

import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.content.pm.PackageInstaller;import android.content.pm.PackageManager;import android.os.Build;import android.util.Log;import androidx.annotation.RequiresApi;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import static com.mo.github.invokeinstallpackage.IoUtils.closeQuietly;/** * Copyright (C), 2018-2019 * Author: ziqimo * Date: 2019-12-31 14:55 * Description: * History: * 
    
     
      
      
        * 作者姓名 修改时间 版本号 描述 */public class AndroidP {    private static final String TAG = AndroidP.class.getSimpleName();    // 适配android9的安装方法。    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)    public void install28(Context context, String apkFilePath, PackageManager packageManager) {        File apkFile = new File(apkFilePath);        PackageInstaller packageInstaller = packageManager.getPackageInstaller();        PackageInstaller.SessionParams sessionParams = new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL);        sessionParams.setSize(apkFile.length());        int sessionId = createSession(packageInstaller, sessionParams);        if (sessionId != -1) {            boolean copySuccess = copyInstallFile(packageInstaller, sessionId, apkFilePath);            if (copySuccess) {                execInstallCommand(context, packageInstaller, sessionId);            }        }    }    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)    private int createSession(PackageInstaller packageInstaller,                              PackageInstaller.SessionParams sessionParams) {        int sessionId = -1;        try {            sessionId = packageInstaller.createSession(sessionParams);        } catch (IOException e) {            e.printStackTrace();        }        return sessionId;    }    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)    private boolean copyInstallFile(PackageInstaller packageInstaller,                                    int sessionId, String apkFilePath) {        InputStream in = null;        OutputStream out = null;        PackageInstaller.Session session = null;        boolean success = false;        try {            File apkFile = new File(apkFilePath);            session = packageInstaller.openSession(sessionId);            out = session.openWrite("base.apk", 0, apkFile.length());            in = new FileInputStream(apkFile);            int total = 0, c;            byte[] buffer = new byte[65536];            while ((c = in.read(buffer)) != -1) {                total += c;                out.write(buffer, 0, c);            }            session.fsync(out);            Log.i(TAG, "streamed " + total + " bytes");            success = true;        } catch (IOException e) {            e.printStackTrace();        } finally {            closeQuietly(out);            closeQuietly(in);            closeQuietly(session);        }        return success;    }    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)    private void execInstallCommand(Context context, PackageInstaller packageInstaller, int sessionId) {        PackageInstaller.Session session = null;        try {            session = packageInstaller.openSession(sessionId);            Intent intent = new Intent(context, InstallResultReceiver.class);            PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 1, intent, PendingIntent.FLAG_UPDATE_CURRENT);            session.commit(pendingIntent.getIntentSender());        } catch (IOException e) {            e.printStackTrace();        } finally {            closeQuietly(session);        }    }
      
     
   

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.pm.PackageInstaller;public class InstallResultReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        if (intent != null) {            final int status = intent.getIntExtra(PackageInstaller.EXTRA_STATUS,                    PackageInstaller.STATUS_FAILURE);            if (status == PackageInstaller.STATUS_SUCCESS) {                // success            } else {                //Log.e(TAG, intent.getStringExtra(PackageInstaller.EXTRA_STATUS_MESSAGE));            }        }    }}``

import java.io.Closeable;import java.io.IOException;import java.net.Socket;public final class IoUtils {    public static void closeQuietly(Closeable c) {        if (c != null) {            try {                c.close();            } catch (IOException ignored) {                ignored.printStackTrace();            }        }    }    public static void closeQuietly(Socket c) {        if (c != null) {            try {                c.close();            } catch (IOException ignored) {                ignored.printStackTrace();            }        }

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