尝试以编程方式安装 apk 时出现 XMLResourceParserError

Question

我正在尝试以编程方式下载并安装 apk 文件。

以下是我的代码，

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                Uri    apkUri = FileProvider.getUriForFile(MainActivity.activity, BuildConfig.APPLICATION_ID + ".provider", new File(mainActivity.destination));
                Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
                intent.setData(apkUri);
                intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                activity.startActivity(intent);
            } else {
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setDataAndType(Uri.fromFile(new File(mainActivity.destination)), "application/vnd.android.package-archive");
                mainActivity.context.startActivity(intent);
            }

但是我收到以下错误，

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference

错误指向行

        Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);

我怎样才能解决这个问题？

Answer 1

Uri apkUri = FileProvider.getUriForFile(MainActivity.activity, BuildConfig.APPLICATION_ID + ".provider", new File(mainActivity.destination));

.文件提供者

尝试以编程方式安装 apk 时出现 XMLResourceParserError

XMLResourceParserError while trying to install an apk programmatically

android

parse-error