到目前为止,我的代码如下所示:
1.下载APK文件并保存到内部存储:
使用依赖服务
应用程序.xaml.cs
IDownloader downloader = DependencyService.Get<IDownloader>();
protected override void OnStart(){
downloader.OnFileDownloaded+=OnFileDownloaded;
downloader.DownloadFile("http://localhost:8080/download","folder");
}
private void OnFileDownloaded(object sender,DownloadEventArgs e) {
if(e.FileSaved) {
App.Current.MainPage.DisplayAlert("XF Downloader","File Saved Successfully","Close");
} else {
App.Current.MainPage.DisplayAlert("XF Downloader","Error while saving the file","Close");
}
}
安卓:AndroidDownloader.cs[assembly: Dependency(typeof(NoguianaNucleo.Droid.AndroidDownloader))]
namespace NoguianaNucleo.Droid {
public class AndroidDownloader: IDownloader {
public event EventHandler<DownloadEventArgs> OnFileDownloaded;
public void DownloadFile(string url,string folder) {
string pathToNewFolder = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal),folder);
Directory.CreateDirectory(pathToNewFolder);
try {
WebClient webClient = new WebClient();
webClient.DownloadFileCompleted+=new AsyncCompletedEventHandler(Completed);
string pathToNewFile = Path.Combine(pathToNewFolder,"nucleo.apk");
webClient.DownloadFileAsync(new Uri(url),pathToNewFile);
} catch(Exception ex) {
if(OnFileDownloaded!=null)
OnFileDownloaded.Invoke(this,new DownloadEventArgs(false));
}
}
private void Completed(object sender,AsyncCompletedEventArgs e) {
if(e.Error!=null) {
App.Current.MainPage.DisplayAlert("Error", e.Error.Message,"Ok");
if(OnFileDownloaded!=null)
OnFileDownloaded.Invoke(this,new DownloadEventArgs(false));
} else {
if(OnFileDownloaded!=null)
OnFileDownloaded.Invoke(this,new DownloadEventArgs(true));
}
}
}
}
2.从内部存储安装APK文件:应用程序.xaml.cs
public void OpenApk(string filepath) {
Java.IO.File file = new Java.IO.File(filepath);
Intent install = new Intent(Intent.ActionView);
// Old Approach
if(Android.OS.Build.VERSION.SdkInt<Android.OS.BuildVersionCodes.N) {
install.SetFlags(ActivityFlags.NewTask|ActivityFlags.GrantReadUriPermission);
install.SetDataAndType(Android.Net.Uri.FromFile(file),"application/vnd.android.package-archive"); //mimeType
} else {
Android.Net.Uri apkURI = Android.Support.V4.Content.FileProvider.GetUriForFile(Android.App.Application.Context,Android.App.Application.Context.ApplicationContext.PackageName+".fileprovider",file);
install.SetDataAndType(apkURI,"application/vnd.android.package-archive");
install.AddFlags(ActivityFlags.NewTask);
install.AddFlags(ActivityFlags.GrantReadUriPermission);
}
Android.App.Application.Context.StartActivity(install);
}
最后一个功能不起作用。我认为 Android.Support 它不再支持了。我也试过这个:
var downloadUri = Android.Net.Uri.Parse("/data/user/0/noguiana.nucleo/files/noguiana/nucleo.apk");
Intent install = new Intent(Intent.ActionInstallPackage);
install.AddFlags(ActivityFlags.GrantReadUriPermission);
install.AddFlags(ActivityFlags.GrantWriteUriPermission);
install.AddFlags(ActivityFlags.GrantPersistableUriPermission);
install.SetDataAndType(downloadUri,"application/vnd.android.package-archive");
context.StartActivity(install);
没有任何效果你知道在 Xamarin.Forms (Android) 中以编程方式安装 APK 的其他方法吗?
最佳答案
请改用 PackageInstaller。
ActionView 和 ACTION_INSTALL_PACKAGE 在 API 级别 29 中已被弃用。
你试过这个解决方案吗?
Android PackageInstaller not installing APK
关于c# - 以编程方式安装 APK Xamarin.Forms (Android),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/70212833/