(Android Control) Development Summary of the GridView Control

Document directory

• First Effect
• The following are specific implementations:

First Effect

Supplement: Download specific applications: Android Market

Problem 1: When you bind data with SimpleAdapter, the image must be in front of the Item, and the text must be in the back

Unknown reason

Question 2: Select "yes" in "set Item", which includes the green background of some systems.

Set the color of listSelector in the GridView to be consistent with that in the background.

The following are specific implementations:

1 Interface

   <GridView                      android:listSelector="#FAF4FF"                      android:id="@+id/GridView"                      android:layout_width="fill_parent"                      android:layout_height="fill_parent"                      android:columnWidth="140dp"                      android:padding="0dp"                      android:numColumns="2"                      android:stretchMode="columnWidth" >                </GridView>

Griditem Interface

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:background="@drawable/itemselect"android:layout_height="wrap_content"android:padding="10dp"><ImageView    android:layout_width="130dp"    android:background="@drawable/imgbar"    android:id="@+id/ItemImage"    android:adjustViewBounds="true"    android:padding="1dp"    android:layout_height="108dp"    android:layout_centerHorizontal="true"/><TextView    android:layout_width="wrap_content"    android:layout_height="27dp"    android:layout_marginBottom="10dp"    android:layout_below="@+id/ItemImage"    android:textColor="#000000"    android:textSize="19sp"    android:id="@+id/ItemText"    android:layout_centerHorizontal="true"/></RelativeLayout>

 

Bind background data:

ArrayList <HashMap <String, Object> meumList = new ArrayList <HashMap <String, Object> (); HashMap map = new HashMap <String, Object> (); map. put ("ItemImage", R. drawable. f11); map. put ("ItemText", "squirrel mandarin fish"); meumList. add (map); SimpleAdapter saItem = new SimpleAdapter (this, meumList, // data source R. layout. griditem, // xml implement new String [] {"ItemImage", "ItemText"}, // corresponding map Key new int [] {R. id. itemImage, R. id. itemText }); // Id of the corresponding R // Add the Item to the grid gridview. setAdapter (saItem); // Add the Click Event gridview. setOnItemClickListener (new OnItemClickListener () {@ Override public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2, long arg3) {Intent intent = new Intent (); intent. putExtra ("index", arg2); intent. setClass (Main. this, Detail. class); startActivity (intent );}});