Question

I am creating an application that installs apps downloaded from a server. I would like to Install these application After the file is downloaded the code for the method I am using to install is here:

 public void Install(String name)
{
    //prompts user to accept any installation of the apk with provided name
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setDataAndType(Uri.fromFile(new File
    (Environment.getExternalStorageDirectory() + "/ContentManager/" + name)), "application/vnd.android.package-archive");
    startActivity(intent);
    //this code should execute after the install finishes
    File file = new File(Environment.getExternalStorageDirectory() + "/ContentManager/"+name);
    file.delete();

}

I would like to have the apk file deleted from the sd card after the install is completed. This code deletes it once the install is started, causing the installation to fail. I am fairly neew to android and would much appreciate some help. I am basically trying to wait for the installation to complete before continuing with the process.

Answer 1

This might not be the best way but I solved the problem. Here is my new code for the method.

 public void Install(final String name,View view)
{
    //prompts user to accept any installation of the apk with provided name
    printstatus("Installing apk please accept permissions");
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setDataAndType(Uri.fromFile(new File
    (Environment.getExternalStorageDirectory() + "/ContentManager/" + name)), "application/vnd.android.package-archive");
    startActivity(intent);
    try {
        Thread.sleep(1500);
    } catch (InterruptedException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    for(int i=0;i<100;)
    {
        System.gc();
        if(view.getWindowVisibility()==0)
        {
            i=200;
            System.gc();
        }
        try {
            Thread.sleep(500);
            System.gc();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    File file = new File(Environment.getExternalStorageDirectory() + "/ContentManager/"+name);
    file.delete();
}

I created a loop that will wait until the window is in the front to let the method continue executing. The garbage collector and thread sleeping prevents it from slowing down the system or the Linux kernel killing the process. The sleep before the loop is needed so the package manager has time to start before the loop begins.