笔记：requires the provider be exported, or grantUriPermission()

来源：互联网发布：windows已阻止此软件编辑：程序博客网时间：2024/05/22 01:39

背景：

之前更新是通过Notification中加入PendingIntent，正常运行，现在改为下载apk后在当前Activity中启动安装。

代码：

原先使用Notification的代码如下

Intent intent = new Intent(Intent.ACTION_VIEW);intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);Uri uri;if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {    uri = FileProvider.getUriForFile(mContext, BuildConfig.APPLICATION_ID + ".provider", saveFilePath);} else {    uri = Uri.fromFile(saveFilePath);}intent.setDataAndType(uri, "application/vnd.android.package-archive");PendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0);Notification notification = new Notification.Builder(mContext).setAutoCancel(true).setOngoing(true).setContentTitle(mContext.getString(R.string.downloadSuccess)).setContentIntent(pendingIntent).setSmallIcon(R.mipmap.appicon).setWhen(System.currentTimeMillis()).setTicker(mContext.getString(R.string.downloadSuccess)).build();                            mNotificationManager.notify(R.mipmap.appicon, notification);

修改之后的代码如下（和上面代码不在同一个类中）

Intent intent= new Intent(Intent.ACTION_VIEW);       intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);Uri uri;if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {    uri = FileProvider.getUriForFile(mBaseContext,BuildConfig.APPLICATION_ID + ".provider", apkPath);            intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);} else {    uri = Uri.fromFile(apkPath);}intent.setDataAndType(uri, "application/vnd.android.package-archive");android.os.Process.killProcess(android.os.Process.myPid());

报错：

java.lang.SecurityException: Permission Denial
requires the provider be exported, or grantUriPermission()

原因：

没有获取到FLAG_GRANT_READ_URI_PERMISSION权限，需要调用grantUriPermission()方法获取，参考How to use support FileProvider for sharing content to other apps?

改正后的代码：

...uri = FileProvider.getUriForFile(mBaseContext,BuildConfig.APPLICATION_ID + ".provider", apkPath);grantUriPermission(getPackageName(),uri,Intent.FLAG_GRANT_READ_URI_PERMISSION);                    intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);                       ...

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