Add file to apk file

[eluser]Unknown[/eluser]
When i add file to apk file using code

Code:

if ($zip->open($file) === TRUE) {
       $type=$data['upload_data']['file_ext'];
  
    
    switch($type)
    {
    case ".jar":
    
    $zip->deleteName('agent.txt');
    $zip->addFromString('agent.txt','1989');
    $zip->deleteName('provider.txt');
    $zip->addFromString('provider.txt','khanh');
       break;
    case ".apk":
    $zip->deleteName('res/drawable-ldpi/agent.txt');
    $zip->deleteName('res/drawable-ldpi/provider.txt');
    $zip->addFromString('res/drawable-ldpi/agent.txt','1989');
    $zip->addFromString('res/drawable-ldpi/provider.txt','khanh');
    break;
    }

i dont install it on smartphone .How to fix it