java - 在 DialogFragment 中使用 getIntent() 和 getPackageInfo

Question

我正在创建一个对话框，显示特定应用程序所需的权限。问题是我无法在不扩展Activity的类中使用getIntent()和getPackageInfo，那么我该怎么办？代码是这样的。

public class DialogPermissions extends DialogFragment{

    public android.app.Dialog onCreateDialog(Bundle savedInstanceState) {

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        String value2;
        LayoutInflater inflater = getActivity().getLayoutInflater();
        View view = inflater.inflate(R.layout.dialog_permissions, null);
        builder.setView(view);

        TextView permissions = (TextView)view.findViewById(R.id.permissions);

        Bundle extras = getIntent().getExtras();
        if(extras!=null) {
        value2 = getIntent().getStringExtra("packageApplication");
        }

        try {
            PackageInfo packageInfo = getPackageInfo(value2, PackageManager.GET_PERMISSIONS);

            String[] requestedPermissions = packageInfo.requestedPermissions;
            if ( requestedPermissions != null ) {
                for (int i = 0; i < requestedPermissions.length; i++) {
                }

            }
        }
        catch ( PackageManager.NameNotFoundException e ) {
            e.printStackTrace();
        }

        builder.setTitle("Permission")
               .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int id) {
                       dismiss();
}
               });

        return builder.create();
    }
}

Answer 1

你可以这样使用它-

Intent i = getActivity().getIntent();

和-

getActivity().getPackageManager().getPackageInfo(packageName, flags)