安卓APP在线升级

安卓APP在线升级

通过IDHTTP组件在线下载APP到手机中，然后自动安装这个APP程序。

1）在线下载APP程序

需引用单元: 

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{$IFDEF ANDROID} FMX.Helpers.Android, Androidapi.JNI.GraphicsContentViewText, Androidapi.JNI.Net, Androidapi.JNI.JavaTypes; {IFDEF} procedure TForm1.Button2Click(Sender: TObject); var caminho_d: string; MyFile: TFileStream; begin //verifica se ja existe para apagar e criar novamente if FileExists(GetSharedDownloadsDir+’/PJMOBILE.apk’) then DeleteFile(GetSharedDownloadsDir+’/PJMOBILE.apk’); // definir o link caminho_d:= ‘http://susite.com.br/download/APP.apk‘; // aqui defini um caminho pard鉶 pro download , pode ser trocado por um edit, etc MyFile := TFileStream.Create(GetSharedDownloadsDir+’/APP.apk’, fmCreate); // local no celular e nome do arquivo com a extens鉶, onde vai salvar. try IdHTTP1.Get(caminho_d, MyFile); // fazendo o download do arquivo e salva no celular finally MyFile.Free; end; end; procedure TForm1.IdHTTP1Work(ASender: TObject; AWorkMode: TWorkMode; AWorkCount: Int64); begin ProgressBar1.value := AWorkCount; Application.ProcessMessages; end; procedure TForm1.IdHTTP1WorkBegin(ASender: TObject; AWorkMode: TWorkMode; AWorkCountMax: Int64); begin ProgressBar1.value := 0; ProgressBar1.Max := AWorkCountMax; Label1.Text := ‘开始下载’; end; procedure TForm1.IdHTTP1WorkEnd(ASender: TObject; AWorkMode: TWorkMode); begin ProgressBar1.Value := ProgressBar1.Max; Label1.text := ‘下载完成’; end;

　　

2）安装下载的APK

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procedure TForm1.Button1Click(Sender: TObject); var aFile:Jfile; Intent:JIntent; begin aFile:=TJfile.JavaClass.init(stringtojstring(GetSharedDownloadsDir),stringtojstring(‘APP.apk’)); Intent := TJIntent.Create ; Intent.setAction(TJIntent.JavaClass.ACTION_VIEW); Intent.addFlags(TJIntent.JavaClass.FLAG_ACTIVITY_NEW_TASK); Intent.setDataAndType(TJnet_Uri.JavaClass.fromFile(aFile),StringToJString(‘application/vnd.android.package-archive’)); SharedActivityContext.startActivity(Intent); end;