Android uses gallery to create an infinite loop menu

Android uses gallery to create an infinite loop menu

1. Create a common class to inherit Gallery, in order to remove the inertia of gallery Rolling

package cn.com.y2m;　　 import android.content.Context;　　 import android.util.AttributeSet;　　 import android.view.MotionEvent;　　 import android.widget.Gallery;　　 public class MyGallery extends Gallery {　　public MyGallery(Context context) {　　 super(context);　　}　　public MyGallery(Context context, AttributeSet attrs, int defStyle) {　　 super(context, attrs, defStyle);　　}　　public MyGallery(Context context, AttributeSet attrs) {　　 super(context, attrs);　　}　　@Override　　public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,　　 float velocityY) {　　 return true;　　}　　}

Ii. layout file writing. Labels use classes inherited from gallery

　　 cn.com.y2m.MyGallery　　android:id="@+id/gallery_view"　　android:layout_width="fill_parent"　　android:layout_height="wrap_content"　　 /

3. Writing sub-layout files

　　 ImageView android:id="@+id/ItemImage" 　　 android:layout_width="40px"　　 android:layout_height="30px"　　 android:layout_marginLeft="25px"　　 android:layout_marginTop="6px"　　 /　　 TextView　　 android:id="@+id/ItemText"　　 android:layout_width="89px"　　 android:layout_height="20px" 　　 android:gravity="center"　　 android:textColor="#ffffff"　　 android:layout_marginBottom="4px"　　 /

4. code writing. Like listview, I like to inherit baseadapter for extended filling.

// Set the class myadapter extends baseadapter {private layoutinflater minflater; Public myadapter (context) {This. minflater = layoutinflater. from (context) ;}@ override public int getcount () {return integer. max_value ;}@ override public object getitem (INT arg0) {return arg0 ;}@ override public long getitemid (INT position) {return position ;}@ override public view getview (INT position, view convertview, viewgroup parent) {viewholder holder = NULL; If (convertview = NULL) {holder = new viewholder (); convertview = minflater. inflate (R. layout. footer_item, null); holder. image = (imageview) convertview. findviewbyid (R. id. itemimage); holder.txt = (textview) convertview. findviewbyid (R. id. itemtext); convertview. settag (holder);} else {holder = (viewholder) convertview. gettag ();} holder. image. setimageresource (menuitems. get (listmenu. get (position % listmenu. size (); holder.txt. settext (listmenu. get (position % listmenu. size (); If (ARG = position) convertview. setbackgroundresource (R. drawable. main_tab_frame_tabspec_background_current); Return convertview;} class viewholder {public imageview image; Public textview txt;} // fill in the data to the gallery = (Gallery) findviewbyid (R. id. gallery_view); // The default selected item Arg = integer. max_value/2 + 1; myadapter MA = new myadapter (this); Gallery. setadapter (MA); Gallery. setselection (ARG); Gallery. setonitemclicklistener (New adapterview. onitemclicklistener () {@ override public void onitemclick (adapterview arg0, view arg1, int arg2, long arg3) {toast. maketext (this, "you clicked" + (I + 1) + "No. Menu", 1 );}});

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