Android 安装应用的两种方式--外部应用安装器安装和静默安装(系统应用)

1.调用外部安装器安装

   

/**     * 外部应用安装器安装apk（原生接口）     * @param context     * @param path apk的路径     * @return     */    public static boolean installApkByPath(Context context, String path) {        try {            Intent intent = new Intent(Intent.ACTION_VIEW);            intent.setDataAndType(Uri.fromFile(new File(path)), "application/vnd.android.package-archive");            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            context.startActivity(intent);            return true;        } catch (Exception e) {            e.printStackTrace();        }        return false;    }

2.静默安装(系统应用才有权限)

这里使用反射的方式调用  

public class PackageManager_R {    private static final String TAG = "PackageManager_R";    private static final String ERROR_TAG = "ReflectError " + TAG;    private static Method sMethod_installPackage;    /**     * 静默安装（原生接口）     *     * @param path     * @return     */    public static boolean installPackage(String path, final SystemAppInstall.InstalledCallBack callBack) {        if (sMethod_installPackage == null) {            try {                sMethod_installPackage = PackageManager.class.getMethod("installPackage", Uri.class, IPackageInstallObserver.class, int.class, String.class);            } catch (Exception e) {                LogUtils.w(ERROR_TAG, "", e);                e.printStackTrace();            }        }        IPackageInstallObserver observer = new IPackageInstallObserver.Stub() {            public void packageInstalled(String packageName, int returnCode) {                if (returnCode != 1) {                    callBack.onResult(packageName, false);                } else {                    callBack.onResult(packageName, true);                }            }        };        PackageManager pm = AppContextUtils.getAppContext().getPackageManager();        try {            sMethod_installPackage.invoke(pm, Uri.parse("file://" + path), observer, 0, null);            return true;        } catch (Exception e) {            LogUtils.w(ERROR_TAG, "", e);            e.printStackTrace();        }        return false;    }}

对应的源码的接口

/**     * @hide Install a package. Since this may take a little while, the result     *       will be posted back to the given observer. An installation will     *       fail if the calling context lacks the     *       {@link android.Manifest.permission#INSTALL_PACKAGES} permission, if     *       the package named in the package file's manifest is already     *       installed, or if there's no space available on the device.     * @param packageURI The location of the package file to install. This can     *            be a 'file:' or a 'content:' URI.     * @param observer An observer callback to get notified when the package     *            installation is complete.     *            {@link IPackageInstallObserver#packageInstalled(String, int)}     *            will be called when that happens. This parameter must not be     *            null.     * @param flags - possible values: {@link #INSTALL_FORWARD_LOCK},     *            {@link #INSTALL_REPLACE_EXISTING},     *            {@link #INSTALL_ALLOW_TEST}.     * @param installerPackageName Optional package name of the application that     *            is performing the installation. This identifies which market     *            the package came from.     * @deprecated Use {@link #installPackage(Uri, PackageInstallObserver, int,     *             String)} instead. This method will continue to be supported     *             but the older observer interface will not get additional     *             failure details.     */    // @SystemApi    public abstract void installPackage(            Uri packageURI, IPackageInstallObserver observer, int flags,            String installerPackageName);

3.监听应用的安装与卸载

//注册监听

IntentFilter installFilter = new IntentFilter();        installFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);        installFilter.addAction(Intent.ACTION_PACKAGE_ADDED);        installFilter.addDataScheme("package");        mContext.registerReceiver(mAppReceiver, installFilter);

//移除监听

mContext.unregisterReceiver(mAppReceiver);

//广播接收回调

private BroadcastReceiver mAppReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            LogUtils.d(TAG, "onReceive = " + action);            String pkgName = intent.getData().getSchemeSpecificPart();            if(action.equals(Intent.ACTION_PACKAGE_REMOVED)) {                //卸载            }else if(action.equals(Intent.ACTION_PACKAGE_ADDED)) {                //安装            }        }    };