Android9.0無法通過以下兩種方式實現靜默安裝：

1.runtime執行shell cmd2.PackageInstall 反射機制

但是Google已經給我們推薦了相關的APIDemos，所以建議大家多看看源碼~

在frameworks/base/core/java/android/content/pm/PackageInstaller.java有段關于該類的介紹：

The ApiDemos project contains examples of using this API: <code>ApiDemos/src/com/example/android/apis/content/InstallApk*.java</code>.

/** * Offers the ability to install, upgrade, and remove applications on the * device. This includes support for apps packaged either as a single * 'monolithic' APK, or apps packaged as multiple 'split' APKs. * <p> * An app is delivered for installation through a * {@link PackageInstaller.Session}, which any app can create. Once the session * is created, the installer can stream one or more APKs into place until it * decides to either commit or destroy the session. Committing may require user * intervention to complete the installation. * <p> * Sessions can install brand new apps, upgrade existing apps, or add new splits * into an existing app. * <p> * Apps packaged as multiple split APKs always consist of a single 'base' APK * (with a {@code null} split name) and zero or more 'split' APKs (with unique * split names). Any subset of these APKs can be installed together, as long as * the following constraints are met: * <ul> * <li>All APKs must have the exact same package name, version code, and signing * certificates. * <li>All APKs must have unique split names. * <li>All installations must contain a single base APK. * </ul> * <p> * ###########此處告訴開發者如何調用API安裝apk############## * The ApiDemos project contains examples of using this API: * <code>ApiDemos/src/com/example/android/apis/content/InstallApk*.java</code>. */public class PackageInstaller

翻閱源碼，InstallApk*.java相關的一共兩個demoInstallApkSessionApi.java //靜默安裝InstallApk.java //普通安裝，調用系統install intent進行安裝

下面是InstallApkSessionApi.java的具體demo

package com.example.android.apis.content;// Need the following import to get access to the app resources, since this// class is in a sub-package.import com.example.android.apis.R;import android.app.Activity;import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.content.IntentSender;import android.content.pm.PackageInstaller;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;/** * Demonstration of package installation and uninstallation using the package installer Session * API. * * @see InstallApk for a demo of the original (non-Session) API. */public class InstallApkSessionApi extends Activity { private static final String PACKAGE_INSTALLED_ACTION = 'com.example.android.apis.content.SESSION_API_PACKAGE_INSTALLED'; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.install_apk_session_api); // Watch for button clicks. Button button = (Button) findViewById(R.id.install); button.setOnClickListener(new OnClickListener() { public void onClick(View v) {PackageInstaller.Session session = null;try { PackageInstaller packageInstaller = getPackageManager().getPackageInstaller(); PackageInstaller.SessionParams params = new PackageInstaller.SessionParams( PackageInstaller.SessionParams.MODE_FULL_INSTALL); int sessionId = packageInstaller.createSession(params); session = packageInstaller.openSession(sessionId); addApkToInstallSession('HelloActivity.apk', session); // Create an install status receiver. Context context = InstallApkSessionApi.this; Intent intent = new Intent(context, InstallApkSessionApi.class); intent.setAction(PACKAGE_INSTALLED_ACTION); //此處也可以使用getBoradcast或者getService回調通知 PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0); IntentSender statusReceiver = pendingIntent.getIntentSender(); // Commit the session (this will start the installation workflow). session.commit(statusReceiver);} catch (IOException e) { throw new RuntimeException('Couldn’t install package', e);} catch (RuntimeException e) { if (session != null) { session.abandon(); } throw e;} } }); } private void addApkToInstallSession(String assetName, PackageInstaller.Session session) throws IOException { // It’s recommended to pass the file size to openWrite(). Otherwise installation may fail // if the disk is almost full. try (OutputStream packageInSession = session.openWrite('package', 0, -1); InputStream is = getAssets().open(assetName)) { byte[] buffer = new byte[16384]; int n; while ((n = is.read(buffer)) >= 0) {packageInSession.write(buffer, 0, n); } } } // Note: this Activity must run in singleTop launchMode for it to be able to receive the intent // in onNewIntent(). @Override protected void onNewIntent(Intent intent) { Bundle extras = intent.getExtras(); if (PACKAGE_INSTALLED_ACTION.equals(intent.getAction())) { int status = extras.getInt(PackageInstaller.EXTRA_STATUS); String message = extras.getString(PackageInstaller.EXTRA_STATUS_MESSAGE); switch (status) {case PackageInstaller.STATUS_PENDING_USER_ACTION: // This test app isn’t privileged, so the user has to confirm the install. Intent confirmIntent = (Intent) extras.get(Intent.EXTRA_INTENT); startActivity(confirmIntent); break;case PackageInstaller.STATUS_SUCCESS: Toast.makeText(this, 'Install succeeded!', Toast.LENGTH_SHORT).show(); break;case PackageInstaller.STATUS_FAILURE:case PackageInstaller.STATUS_FAILURE_ABORTED:case PackageInstaller.STATUS_FAILURE_BLOCKED:case PackageInstaller.STATUS_FAILURE_CONFLICT:case PackageInstaller.STATUS_FAILURE_INCOMPATIBLE:case PackageInstaller.STATUS_FAILURE_INVALID:case PackageInstaller.STATUS_FAILURE_STORAGE: Toast.makeText(this, 'Install failed! ' + status + ', ' + message, Toast.LENGTH_SHORT).show(); break;default: Toast.makeText(this, 'Unrecognized status received from installer: ' + status, Toast.LENGTH_SHORT).show(); } } }}

另外，權限要求：

需要系統簽名permission

<uses-permission android:name='android.permission.INSTALL_PACKAGES' /><uses-permission android:name='android.permission.READ_EXTERNAL_STORAGE' />

到此這篇關于Android P實現靜默安裝的方法示例(官方Demo)的文章就介紹到這了,更多相關Android P 靜默安裝 內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！