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下面是我的代码，它使用 PackageInstaller 安装我从服务器下载的 APK。

public static final String ACTION_INSTALL_COMPLETE = BuildConfig.APPLICATION_ID + ".INSTALL_COMPLETE";
private void installApk(String apkFilePath) {
    try {
        // Create package manager installation params
        final PackageInstaller pkgInstaller = getBaseContext().getPackageManager().getPackageInstaller();
        PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL);

        // Create session callback for monitoring progress
        pkgInstaller.registerSessionCallback(new PackageInstaller.SessionCallback() {
            static final String PKG_LOG_TAG = "pkg-install-status";

            @Override
            public void onCreated(int sID) {
                Log.e(PKG_LOG_TAG, "Session created: " + sID);
                PackageInstaller.SessionInfo sessionInfo = pkgInstaller.getSessionInfo(sID);
                if (sessionInfo != null) {
                    Log.e(PKG_LOG_TAG, "Installing package name: " + sessionInfo.getAppPackageName());
                }
                else {
                    Log.e(PKG_LOG_TAG, "Session does not exist: " + sID);
                }
            }

            @Override
            public void onBadgingChanged(int sID) {
                Log.e(PKG_LOG_TAG, "Badging Changed: " + sID);
            }

            @Override
            public void onActiveChanged(int sID, boolean active) {
                Log.e(PKG_LOG_TAG, "Active Changed: " + sID + ", active=" + active);
                PackageInstaller.SessionInfo sessionInfo = pkgInstaller.getSessionInfo(sID);
                if (sessionInfo != null) {
                    Log.e(PKG_LOG_TAG, "Installing package name: " + sessionInfo.getAppPackageName());
                }
            }

            @Override
            public void onProgressChanged(int sID, float progress) {
                Log.e(PKG_LOG_TAG, "Progress changed: " + sID + ", progress=" + progress);
                PackageInstaller.SessionInfo sessionInfo = pkgInstaller.getSessionInfo(sID);
                if (sessionInfo != null) {
                    Log.e(PKG_LOG_TAG, "Installing package name: " + sessionInfo.getAppPackageName());
                }
            }

            @Override
            public void onFinished(int sID, boolean success) {
                if (!success) {
                    // Print error details
                    Log.e(PKG_LOG_TAG, "Session failed: " + sID);
                    PackageInstaller.SessionInfo sessionInfo = pkgInstaller.getSessionInfo(sID);
                    if (sessionInfo != null) {
                        if (sessionInfo.isStaged())
                            Log.e(PKG_LOG_TAG, sessionInfo.getStagedSessionErrorCode() + " -- " + sessionInfo.getStagedSessionErrorMessage());
                    }
                }
            }
        });

        // Create package manager installation session
        int sessionId = pkgInstaller.createSession(params);
        PackageInstaller.Session session = pkgInstaller.openSession(sessionId);

        // Stream downloaded APK file to package manager session
        InputStream in = new FileInputStream(apkFilePath);
        OutputStream out = session.openWrite("update_session", 0, -1);
        byte[] buffer = new byte[65536];
        int bytesRead = in.read(buffer);
        while (bytesRead != -1) {
            out.write(buffer, 0, bytesRead);
            bytesRead = in.read(buffer);
        }

        // Close streams
        session.fsync(out);
        out.close();
        in.close();

        // Close session
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, sessionId, new Intent(ACTION_INSTALL_COMPLETE),0);
        session.commit(pendingIntent.getIntentSender());
        session.close();
    }
    catch (Exception ex) {
        ex.printStackTrace();
    }
}

我得到的输出表明创建了正确的 SessionID，但在“getSessionInfo()”之后立即返回 null。根据 Android 官方文档，这表明有问题的 SessionID 不存在。但是，当我在相关会话的回调处理程序中时，这怎么可能呢？请注意，所有回调都会发生这种情况，而不仅仅是 Create。

system_process W/PackageManager: installPackageLI
E/pkg-install-status: Session created: 676341822
E/pkg-install-status: Session does not exist: 676341822
E/pkg-install-status: Active Changed: 676341822, active=true
E/pkg-install-status: Progress changed: 676341822, progress=0.8
E/pkg-install-status: Progress changed: 676341822, progress=0.90000004
E/pkg-install-status: Session failed: 676341822

这是奇怪的部分 - sessionInfo 时不时地不为空，并且会打印所需的数据。

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0 回答 0