java - Android dynamically add custom component to LinearLayout -

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i want add custom component on linearlayout whenever touch button.

this code:

layoutinflater vi = (layoutinflater) getapplicationcontext().getsystemservice(context.layout_inflater_service); linearlayout root = (linearlayout) findviewbyid(r.id.layout_cartelle_immagini);  view custom = vi.inflate(r.layout.custom_list_folder, null); textview textview = (textview) custom.findviewbyid(r.id.label_pathfolder); textview.settext(pathdirectory);  spinner spinnerlevel = (spinner) custom.findviewbyid(r.id.spinner_level);  try{  root.addview(custom); }catch(throwable e) {     log.e("burgerclub", "mex: " + e.getmessage());     e.printstacktrace(); }

in way, first custom component added, why?

thanks

edit: i've modified code:

linearlayout.layoutparams params = new linearlayout.layoutparams( linearlayout.layoutparams.wrap_content, linearlayout.layoutparams.wrap_content); ((viewgroup) root).addview(custom, mycount, params);

this custom component:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:background="@drawable/border_bottom"     android:layout_marginbottom="2dp"     android:paddingright="20dp"     android:paddingleft="20dp"     style="@style/theme.burgerclubstyle" >      <textview         android:id="@+id/label_pathfolder"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginleft="10dp"         android:gravity="center"         android:padding="20dp"         android:textsize="25sp"         style="@style/customtext" />      <spinner         android:id="@+id/spinner_level"         android:layout_width="300dp"         android:layout_height="wrap_content"         android:layout_toleftof="@+id/btn_show_desc_img"         android:entries="@array/n_level_array"         android:padding="20dp"         android:prompt="@string/n_level_prompt"         android:textalignment="3"         style="@style/customtext" />      <imagebutton         android:id="@+id/btn_show_desc_img"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_toleftof="@+id/btn_remove_folder"         android:layout_marginleft="20dp"         android:layout_centervertical="true"         android:background="@drawable/button_press"         android:contentdescription="@string/showdescimg"         android:src="@drawable/ic_desc" />      <imagebutton         android:id="@+id/btn_remove_folder"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginleft="20dp"         android:layout_alignparentright="true"         android:layout_centervertical="true"         android:background="@drawable/button_press"         android:contentdescription="@string/showdescimg"         android:src="@drawable/ic_delete" />  </relativelayout>

the first time press button, custom component added, other times not. first custom element not overwrite, it's visible!

where's layout_cartelle_immagini declared?

probably it's horizontal linearlayout, set orientation vertical , code should work (considering code add custom view inside onclicklistener).


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