Android GridView multiple-selection effect of instance code _android

The specific code is as follows:

Main.xml

Copy Code code as follows:

<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"

Xmlns:tools= "Http://schemas.android.com/tools"

Android:background= "#000000"

Android:layout_width= "Fill_parent"

android:layout_height= "Fill_parent"

Tools:context= ". Mainactivity ">

<gridview

Android:layout_width= "Fill_parent"

android:layout_height= "Fill_parent"

Android:id= "@+id/grid"

Android:verticalspacing= "3DP"

Android:horizontalspacing= "3DP"

Android:numcolumns= "3"

></GridView>

</LinearLayout>

Item.xml

Copy Code code 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= "Vertical" >

<imageview

Android:scaletype= "Fitxy"

Android:padding= "3DP"

android:layout_height= "70DP"

Android:layout_width= "70DP"

Android:id= "@+id/image_item"

/>

</LinearLayout>

Mainactivity.java

Copy Code code as follows:

Package Com.imageview;
Import Android.os.Bundle;
Import android.app.Activity;
Import Android.view.View;
Import Android.widget.AdapterView;
Import Android.widget.GridView;
Import Android.widget.AdapterView.OnItemClickListener;

public class Mainactivity extends activity {
Private Adpter Adpter;
Private GridView GridView;
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.main);
int [] IMAGE={R.DRAWABLE.DOG1,R.DRAWABLE.M2,R.DRAWABLE.M3,R.DRAWABLE.M4,R.DRAWABLE.M5,R.DRAWABLE.DOG2};
Adpter=new Adpter (image, this);
gridview= (GridView) Findviewbyid (R.id.grid);
Gridview.setadapter (Adpter);
Gridview.setonitemclicklistener (New Onitemclicklistener () {
@Override
public void Onitemclick (adapterview<?> arg0, View arg1,
int position, long Arg3) {
Adpter.chicestate (position);
}
});
}
}

Adpter.java

Copy Code code as follows:

Package Com.imageview;

Import Android.content.Context;
Import Android.graphics.Bitmap;
Import Android.graphics.BitmapFactory;
Import android.graphics.drawable.BitmapDrawable;
Import android.graphics.drawable.Drawable;
Import android.graphics.drawable.LayerDrawable;
Import Android.util.Log;
Import Android.view.LayoutInflater;
Import Android.view.View;
Import Android.view.ViewGroup;
Import Android.widget.BaseAdapter;
Import Android.widget.ImageView;

public class Adpter extends Baseadapter {
Private int[] image;
Private Boolean ischice[];
private context;

Public Adpter (int[] IM, context context) {
This.image = im;
LOG.I ("Hck", im.length+ "lenght");
Ischice=new Boolean[im.length];
for (int i = 0; i < im.length; i++) {
Ischice[i]=false;
}
This.context = context;
}

@Override
public int GetCount () {
return image.length;
}

@Override
Public Object getitem (int arg0) {
return IMAGE[ARG0];
}

@Override
public long getitemid (int arg0) {
return arg0;
}

@Override
Public View getview (int arg0, View arg1, ViewGroup arg2) {
View view = Arg1;
GetView Getview=null;
if (view = = null) {
View = Layoutinflater.from (context). Inflate (R.layout.item, NULL);
GetView = new GetView ();
getview.imageview= (ImageView) View.findviewbyid (R.id.image_item);
View.settag (GetView);
} else {
GetView = (GetView) view.gettag ();
}
GetView.imageView.setImageDrawable (GetView (arg0));

return view;
}

Static Class GetView {
ImageView ImageView;
}

The main thing is the following code.
Private layerdrawable GetView (int post) {

Bitmap Bitmap = (bitmapdrawable) context.getresources (). getdrawable (Image[post)). Getbitmap ();
Bitmap Bitmap2=null;
Layerdrawable La=null;
if (ischice[post]== true) {
BITMAP2 = Bitmapfactory.decoderesource (Context.getresources (),
R.drawable.editable_mode_checked_tag);
}
if (bitmap2!=null) {
drawable[] array = new DRAWABLE[2];
Array[0] = new bitmapdrawable (bitmap);
ARRAY[1] = new bitmapdrawable (BITMAP2);
La= new Layerdrawable (array);
La.setlayerinset (0, 0, 0, 0, 0); The spacing of the first few pictures from each side
La.setlayerinset (1, 0, 65, 65, 0);
}
else {
drawable[] array = new DRAWABLE[1];
Array[0] = new bitmapdrawable (bitmap);
La= new Layerdrawable (array);
La.setlayerinset (0, 0, 0, 0, 0);
}
Return to LA; Returns the superimposed graph
}
public void chicestate (int post)
{
Ischice[post]=ischice[post]==true?false:true;
This.notifydatasetchanged ();
}
}