The GridView of Android

The GridView usage is basically similar to a ListView.

Program Layout file Main.xml

<?xml version= "1.0" encoding= "Utf-8"?>
<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
android:orientation= "vertical" android:layout_width= "fill_parent"
android:layout_height= "Fill_parent" >
<textview android:layout_width= "Fill_parent"
android:layout_height= "Wrap_content" android:text= "@string/hello"/>
<gridview android:id= "@+id/gridview01" android:layout_width= "Fill_parent"
android:layout_height= "Wrap_content"/>
</LinearLayout>

Where the GridView layout file for each row is grid_row.xml as follows:

<?xml version= "1.0" encoding= "Utf-8"?>
<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
Android:layout_width= "Match_parent" android:layout_height= "Match_parent"
android:orientation= "Horizontal" >
<imageview android:id= "@+id/imageview01" android:scaletype= "Fitxy"
Android:layout_width= "50dip" android:layout_height= "50dip"/>
<textview android:id= "@+id/tv01" android:layout_width= "100dip"
android:layout_height= "Wrap_content" android:textsize= "24dip"
android:paddingleft= "5dip"/>
<textview android:id= "@+id/tv02" android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content" android:textsize= "24dip"
android:paddingleft= "5dip"/>
</LinearLayout>

Configure the adapter of the GridView in the main function:

@Override
public void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.main);

GridView = (GridView) Findviewbyid (R.ID.GRIDVIEW01);
Simpleadapter adapter = new Simpleadapter (this, generatedatalist (),
R.layout.grid_row, new string[] {"Col1", "col2", "Col3"},
New int[] {r.id.imageview01, r.id.tv01, r.id.tv02});
Gridview.setadapter (adapter);
}

where Generatedatalist () generates the data in the adapter, whose type is list< Extends Map<string,? >>:

Private list<? Extends Map<string,?>> generatedatalist () {
TODO auto-generated Method Stub
Arraylist<map<string,object>> list=new arraylist<map<string,object>> ();
int rowcount=drawableids.length;
for (int i=0;i<rowcount;i++) {
Hashmap<string, object> hmap=new hashmap<string, object> ();
Hmap.put ("Col1", Drawableids[i]);
Hmap.put ("Col2", This.getresources (). getString (Nameids[i]));
Hmap.put ("Col3", This.getresources (). getString (Msgids[i]));
List.add (HMAP);
}
return list;
}

To add an event to the GridView:

Gridview. Setonitemselectedlistener (New Onitemselectedlistener () {

@Override
public void onitemselected (adapterview<?> arg0, View arg1,
int arg2, long arg3) {
TODO auto-generated Method Stub
TextView TextView = (TextView) Findviewbyid (R.ID.TEXTVIEW01);
LinearLayout ll = (linearlayout)arg1;
TextView tv01 = (TextView) ll.getchildat (1);
TextView tv02 = (TextView) ll.getchildat (2);
StringBuilder sb = new StringBuilder ();
Sb.append (Tv01.gettext ());
Sb.append ("");
Sb.append (Tv02.gettext ());
Textview.settext (Sb.tostring ());

}

@Override
public void onnothingselected (adapterview<?> arg0) {
TODO auto-generated Method Stub

}
});
Gridview. Setonitemclicklistener (New Onitemclicklistener () {

@Override
public void Onitemclick (adapterview<?> arg0, View arg1, int arg2,
Long Arg3) {
TODO auto-generated Method Stub
LinearLayout ll = (linearlayout) arg1;
TextView tv01 = (TextView) ll.getchildat (1);
TextView tv02 = (TextView) ll.getchildat (2);
StringBuilder sb = new StringBuilder ();
Sb.append (Tv01.gettext ());
Sb.append ("");
Sb.append (Tv02.gettext ());
Toast.maketext (Mainactivity.this, sb.tostring (),
Toast.length_long). Show ();
}
});

The GridView for Android