下载文件已经成功,但安装时出现错误“应用程序未安装” 我已经使用了INSTALL_NON_MARKET_APPS权限 安装提示已存在,但每次我尝试,它总是“应用程序未安装”错误。
public void Update(String apkurl){
try {
URL url = new URL(apkurl);
HttpURLConnection c = (HttpURLConnection) url.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
try{
c.connect();
} catch (Exception e) {
Toast.makeText(getApplicationContext(),e.getMessage() , Toast.LENGTH_LONG).show();
}
String PATH = Environment.getExternalStorageDirectory() + "/download/";
File file = new File(PATH);
file.mkdirs();
File outputFile = new File(file, "prov1.apk");
FileOutputStream fos = new FileOutputStream(outputFile);
InputStream is = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
fos.close();
is.close();//till here, it works fine - .apk is download to my sdcard in download file
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + "prov1.apk")), "application/vnd.android.package-archive");
startActivity(intent);
} catch (IOException e) {
Toast.makeText(getApplicationContext(), "Update error!", Toast.LENGTH_LONG).show();
}
}
我已经阅读了关于这个主题的另一个问题,但仍然卡住了。我非常感谢你的帮助。
答案 0 :(得分:0)
您可能已经拥有一些具有相同包名称的应用程序的问题之一。 例如,如果您尝试将com.something.prov1安装在可能已存在的相同软件包中。如果是这种情况,请先卸载应用程序
adb uninstall com.something.prov1