如何检测用户是否已确认在PackageInstaller (Android)中安装

Question

背景：我正在使用PackageInstaller编程安装安卓应用程序。

我在做什么：下面提到了我正在使用的代码。这是谷歌在PackageInstaller示例中提供的相同代码。

        private void init() {
        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);
                    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();
            }
        }
    }

​

​

查询：代码运行得很好，但是PackageInstaller在单击INSTALL按钮时没有给出任何状态，在单击CANCEL按钮时，它提供了状态。当用户通过单击“安装”按钮确认安装时，我必须执行一些操作。单击“安装”按钮时，是否有其他方法获取状态？

备注：我不希望安装成功后的状态是成功的，但我希望当单击安装按钮时。

Answer 1

您可以为操作PACKAGE_ADDED注册广播，甚至可以检查包是否使用PackageManager#getPackageInfo安装。

请参阅以下问题：

• Receiving package install and uninstall events
• Check if application is installed - Android

编辑:当你意识到你试图在“安装”按钮上检索点击事件之后--我认为这是不可能的。你可以改变你的应用程序的流程，并对安装的成功做出反应，或者等待其他人来回答这个问题。他们可能是某种“无趣”的方式，但我还是不建议这样做。