ImageSwitcher exercise (android)

ImageSwitch requires a ViewFactory interface method to return an ImageView object and specify the setFactory method.

It tried to use ImageView to implement ImageSwitcher. There was no difference, but what was the difference?

 

The Code is as follows:

Xml

 

<? Xml version = "1.0" encoding = "UTF-8"?>
<LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android"
Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent"
Android: orientation = "vertical">

<TextView
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: text = "@ string/hello"/>
<ImageView
Android: id = "@ + id/iv"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
/>
<Button
Android: id = "@ + id/btn"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: text = "switching images"
/>

<ImageSwitcher
Android: id = "@ + id/imageswitch"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
> </ImageSwitcher>
<Button
Android: id = "@ + id/btn2"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: text = "switching Image 2"
/>
</LinearLayout>

 

Java code

Package zziss. android. imageswitchtest;

Import android. app. Activity;
Import android. OS. Bundle;
Import android. view. View;
Import android. widget. Button;
Import android. widget. ImageSwitcher;
Import android. widget. ImageView;
Import android. widget. ViewSwitcher. ViewFactory;

Public class ImageSwitchTestActivity extends Activity implements ViewFactory {
/** Called when the activity is first created .*/
Private ImageView iv;
Private ImageSwitcher imw;
Private Button btn;
Private Button btn2;
Private int I;
Private int index;
@ Override
Public void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. main );
Iv = (ImageView) this. findViewById (R. id. iv );
Btn = (Button) this. findViewById (R. id. btn );
Btn2 = (Button) this. findViewById (R. id. btn2 );

Imw = (ImageSwitcher) this. findViewById (R. id. imageswitch );
Imw. setFactory (this );
I = 0;
Index = 0;
Btn. setOnClickListener (new View. OnClickListener (){

@ Override
Public void onClick (View v ){
// TODO Auto-generated method stub
/* If (I = 0)
{
Iv.setimageresource( r.drawable.png 1410 );
I = 1;
}
Else
{
Iv.setimageresource( r.drawable.png 1411 );
I = 0;
}*/
If (index> = 3)
Index = 0;
Iv. setImageResource (imagelist [index]);
Index ++;
}
});

Btn2.setOnClickListener (new View. OnClickListener (){

@ Override
Public void onClick (View v ){
// TODO Auto-generated method stub
If (index> = 3)
Index = 0;
Imw. setImageResource (imagelist [index]);
Index ++;
}
});

}

Private static int [] imagelist =
{
R.drawtable.png 1410,
R.drawtable.png 1411,
R.drawtable.png 1412
};
@ Override
Public View makeView (){
// TODO Auto-generated method stub
Return new ImageView (this );
}
}