Android9.0中怎么实现静默安装源码，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

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import android.content.BroadcastReceiver;import android.content.Context;import android.content.IIntentReceiver;import android.content.IIntentSender;import android.content.Intent;import android.content.IntentFilter;import android.content.IntentSender;import android.content.pm.ApplicationInfo;import android.content.pm.PackageInfo;import android.content.pm.PackageInstaller;import android.content.pm.PackageManager;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.IBinder;import android.os.RemoteException;import android.util.Log;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.lang.reflect.Constructor;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.util.concurrent.SynchronousQueue;import java.util.concurrent.TimeUnit public class PackageManagerCompatP {  private final static String TAG = PackageManagerCompatP.class.getSimpleName();  public static final long MAX_WAIT_TIME = 25 * 1000;  public static final long WAIT_TIME_INCR = 5 * 1000;  private static final String SECURE_CONTAINERS_PREFIX = "/mnt/asec";  private Context mContext;  public PackageManagerCompatQ(Context context) {    this.mContext = context;  }  private static class LocalIntentReceiver {    private final SynchronousQueue mResult = new SynchronousQueue<>();    private IIntentSender.Stub mLocalSender = new IIntentSender.Stub() {      @Override      public void send(int code, Intent intent, String resolvedType, IBinder whitelistToken,               IIntentReceiver finishedReceiver, String requiredPermission, Bundle options) {        try {          mResult.offer(intent, 5, TimeUnit.SECONDS);        } catch (InterruptedException e) {          throw new RuntimeException(e);        }      }    };    public IntentSender getIntentSender() {      Class aClass = null;      try {        aClass = Class.forName("android.content.IntentSender");      } catch (ClassNotFoundException e) {        e.printStackTrace();      }      if (aClass == null) {        return null;      }      try {        Constructor[] declaredConstructors = aClass.getDeclaredConstructors();        for (Constructor declaredConstructor : declaredConstructors) {          Log.i(TAG, "declaredConstructor.toString():" + declaredConstructor.toString());          Log.i(TAG, "declaredConstructor.getName():" + declaredConstructor.getName());          Class[] parameterTypes = declaredConstructor.getParameterTypes();          for (Class parameterType : parameterTypes) {            Class aClass1 = parameterType.getClass();            Log.i(TAG, "parameterTypes...aClass1:" + aClass1.getName());          }        }      } catch (Exception e) {        e.printStackTrace();      }      Constructor constructor = null;      try {        constructor = aClass.getDeclaredConstructor(IIntentSender.class);      } catch (NoSuchMethodException e) {        e.printStackTrace();      }      if (constructor == null) {        return null;      }      Object o = null;      try {        o = constructor.newInstance((IIntentSender) mLocalSender);      } catch (IllegalAccessException e) {        e.printStackTrace();      } catch (InstantiationException e) {        e.printStackTrace();      } catch (InvocationTargetException e) {        e.printStackTrace();      }      return (IntentSender) o;//         new IntentSender((IIntentSender) mLocalSender)    }    public Intent getResult() {      try {        return mResult.take();      } catch (InterruptedException e) {        throw new RuntimeException(e);      }    }  }  private PackageManager getPm() {    return mContext.getPackageManager();  }  private PackageInstaller getPi() {    return getPm().getPackageInstaller();  }  private void writeSplitToInstallSession(PackageInstaller.Session session, String inPath,                      String splitName) throws RemoteException {    long sizeBytes = 0;    final File file = new File(inPath);    if (file.isFile()) {      sizeBytes = file.length();    } else {      return;    }    InputStream in = null;    OutputStream out = null;    try {      in = new FileInputStream(inPath);      out = session.openWrite(splitName, 0, sizeBytes);      int total = 0;      byte[] buffer = new byte[65536];      int c;      while ((c = in.read(buffer)) != -1) {        total += c;        out.write(buffer, 0, c);      }      session.fsync(out);    } catch (IOException e) {      e.printStackTrace();    } finally {      IoUtils.closeQuietly(out);      IoUtils.closeQuietly(in);      IoUtils.closeQuietly(session);    }  }  /**   * 入口方法   * String apkPackageName = ""; //填写安装的包名   * String apkPath = "";//填写安装的路径   **/  public void testReplaceFlagSdcardInternal(String apkPackageName, String apkPath) throws Exception {    // Do not run on devices with emulated external storage.    if (Environment.isExternalStorageEmulated()) {      return;    }    int iFlags = 0x00000008;// PackageManager.INSTALL_EXTERNAL 0x00000008    int rFlags = 0;    //这个暂时用不上    //InstallParams ip = sampleInstallFromRawResource(iFlags, false);    Uri uri = Uri.fromFile(new File(apkPath));    GenericReceiver receiver = new ReplaceReceiver(apkPackageName);    int replaceFlags = rFlags | 0x00000002;//PackageManager.INSTALL_REPLACE_EXISTING 0x00000002    try {      invokeInstallPackage(uri, replaceFlags, receiver, true);      //assertInstall(ip.pkg, iFlags, ip.pkg.installLocation);    } catch (Exception e) {      Log.e(TAG, "Failed with exception : " + e);    } finally {//      cleanUpInstall(ip);    }  }//  class InstallParams {//    Uri packageURI;////    PackageParser.Package pkg;////    InstallParams(String outFileName, int rawResId) throws PackageParserException {//      this.pkg = getParsedPackage(outFileName, rawResId);//      this.packageURI = Uri.fromFile(new File(pkg.codePath));//    }////    InstallParams(PackageParser.Package pkg) {//      this.packageURI = Uri.fromFile(new File(pkg.codePath));//      this.pkg = pkg;//    }////    long getApkSize() {//      File file = new File(pkg.codePath);//      return file.length();//    }//  }////  private InstallParams sampleInstallFromRawResource(int flags, boolean cleanUp)//      throws Exception {//    return installFromRawResource("install.apk", android.R.raw.install, flags, cleanUp, false, -1,//        PackageInfo.INSTALL_LOCATION_UNSPECIFIED);//  }//  private void cleanUpInstall(InstallParams ip) {////  }  private void cleanUpInstall(String pkgName) throws Exception {    if (pkgName == null) {      return;    }    Log.i(TAG, "Deleting package : " + pkgName);    try {      final ApplicationInfo info = getPm().getApplicationInfo(pkgName,          PackageManager.MATCH_UNINSTALLED_PACKAGES);      if (info != null) {        //PackageManager.DELETE_ALL_USERS        final LocalIntentReceiver localReceiver = new LocalIntentReceiver();        //这是卸载，不调用//        getPi().uninstall(pkgName,//            0x00000002,//            localReceiver.getIntentSender());        localReceiver.getResult();        assertUninstalled(info);      }    } catch (IllegalArgumentException | PackageManager.NameNotFoundException e) {      e.printStackTrace();    }  }  private static void assertUninstalled(ApplicationInfo info) throws Exception {    File nativeLibraryFile = new File(info.nativeLibraryDir);    Log.e(TAG, "Native library directory " + info.nativeLibraryDir        + " should be erased" + nativeLibraryFile.exists());  }  private void invokeInstallPackage(Uri packageUri, int flags, GenericReceiver receiver,                   boolean shouldSucceed) {    mContext.registerReceiver(receiver, receiver.filter);    synchronized (receiver) {      final String inPath = packageUri.getPath();      PackageInstaller.Session session = null;      try {        final PackageInstaller.SessionParams sessionParams =            new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL);        try {          //sessionParams.installFlags = flags;          Field installFlags = sessionParams.getClass().getDeclaredField("installFlags");          installFlags.set(sessionParams, flags);        } catch (NoSuchFieldException e) {          e.printStackTrace();        } catch (IllegalAccessException e) {          e.printStackTrace();        }        final int sessionId = getPi().createSession(sessionParams);        session = getPi().openSession(sessionId);        writeSplitToInstallSession(session, inPath, "base.apk");        final LocalIntentReceiver localReceiver = new LocalIntentReceiver();        session.commit(localReceiver.getIntentSender());        final Intent result = localReceiver.getResult();        final int status = result.getIntExtra(PackageInstaller.EXTRA_STATUS,            PackageInstaller.STATUS_FAILURE);        if (shouldSucceed) {          if (status != PackageInstaller.STATUS_SUCCESS) {            Log.e(TAG, "Installation should have succeeded, but got code " + status);          }        } else {          if (status == PackageInstaller.STATUS_SUCCESS) {            Log.e(TAG, "Installation should have failed");          }          // We'll never get a broadcast since the package failed to install          return;        }        // Verify we received the broadcast        long waitTime = 0;        while ((!receiver.isDone()) && (waitTime < MAX_WAIT_TIME)) {          try {            receiver.wait(WAIT_TIME_INCR);            waitTime += WAIT_TIME_INCR;          } catch (InterruptedException e) {            Log.i(TAG, "Interrupted during sleep", e);          }        }        if (!receiver.isDone()) {          Log.e(TAG, "Timed out waiting for PACKAGE_ADDED notification");        }      } catch (IllegalArgumentException | IOException | RemoteException e) {        Log.e(TAG, "Failed to install package; path=" + inPath, e);      } finally {        IoUtils.closeQuietly(session);        mContext.unregisterReceiver(receiver);      }    }  }  private abstract static class GenericReceiver extends BroadcastReceiver {    private boolean doneFlag = false;    boolean received = false;    Intent intent;    IntentFilter filter;    abstract boolean notifyNow(Intent intent);    @Override    public void onReceive(Context context, Intent intent) {      if (notifyNow(intent)) {        synchronized (this) {          received = true;          doneFlag = true;          this.intent = intent;          notifyAll();        }      }    }    public boolean isDone() {      return doneFlag;    }    public void setFilter(IntentFilter filter) {      this.filter = filter;    }  }  class ReplaceReceiver extends GenericReceiver {    String pkgName;    final static int INVALID = -1;    final static int REMOVED = 1;    final static int ADDED = 2;    final static int REPLACED = 3;    int removed = INVALID;    // for updated system apps only    boolean update = false;    ReplaceReceiver(String pkgName) {      this.pkgName = pkgName;      filter = new IntentFilter(Intent.ACTION_PACKAGE_REMOVED);      filter.addAction(Intent.ACTION_PACKAGE_ADDED);      if (update) {        filter.addAction(Intent.ACTION_PACKAGE_REPLACED);      }      filter.addDataScheme("package");      super.setFilter(filter);    }    public boolean notifyNow(Intent intent) {      String action = intent.getAction();      Uri data = intent.getData();      String installedPkg = data.getEncodedSchemeSpecificPart();      if (pkgName == null || !pkgName.equals(installedPkg)) {        return false;      }      if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {        removed = REMOVED;      } else if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {        if (removed != REMOVED) {          return false;        }        boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);        if (!replacing) {          return false;        }        removed = ADDED;        if (!update) {          return true;        }      } else if (Intent.ACTION_PACKAGE_REPLACED.equals(action)) {        if (removed != ADDED) {          return false;        }        removed = REPLACED;        return true;      }      return false;    }  }}

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