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.*/// @SystemApipublic 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() {@Overridepublic 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}}};