Android basics ImageSwitcher view (11)

1. ImageSwitcher (image switcher ):

When you want to click an image, you need to use ImageSwitcher to display it slowly.

We also need to use the ViewFactory interface, which is a view converter. We need to override the makeView () method to create a new view that is added to the view converter (ViewSwitcher.

Animation effect:

Effect of sliding from left to right:

Android. R. anim. slide_in_left

Android. R. anim. slide_out_right

Fade in and out:

Android. R. anim. fade_in

Android. R. anim. fade_out

Demo instance:

Layout file:

Custom Attributes (attrs. xml ):

Main Code:

Public class MainActivity extends Activity implements ViewFactory {Integer [] imgId = {R. drawable. img1, R. drawable. img2, R. drawable. img3, R. drawable. img4, R. drawable. img5, R. drawable. img8, R. drawable. img9 ,}; private ImageSwitcher is; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); is = (ImageSwitcher) findViewById (R. id. I MageSwitcher1); is. setFactory (this); // sets the animation effect. Slide from left to right into is. setInAnimation (AnimationUtils. loadAnimation (this, android. r. anim. slide_in_left); is. setOutAnimation (AnimationUtils. loadAnimation (this, android. r. anim. slide_out_right); Gallery gallery = (Gallery) findViewById (R. id. gallery1); gallery. setAdapter (new ImageAdapter (this); gallery. setOnItemClickListener (new OnItemClickListener () {@ Overridepublic void onItemClick (AdapterView
 Arg0, View arg1, int arg2, long arg3) {is. setImageResource (imgId [arg2]) ;}}) ;}@ Overridepublic boolean onCreateOptionsMenu (Menu menu) {getMenuInflater (). inflate (R. menu. main, menu); return true;} // create a new View to add it to the ImageView. @ Overridepublic View makeView () {ImageView imageView = new ImageView (this); // set the background color imageView. setBackgroundColor (0xffffff00); imageView. setScaleType (ImageView. scaleType. FIT_CENTER); // fill the widget. ImageView. setLayoutParams (new ImageSwitcher. LayoutParams (LayoutParams. FILL_PARENT, LayoutParams. FILL_PARENT); return imageView;} // Image adapter class, bind Gallery. Private class ImageAdapter extends BaseAdapter {private Context context; private int item; public ImageAdapter (Context context) {this. context = context; TypedArray ta = context. obtainStyledAttributes (R. styleable. gallery1); item = ta. getResourceId (R. styleable. gallery1_android_galleryItemBackground, 0); ta. recycle () ;}@ Overridepublic int getCount () {return imgId. length ;}@ Overridepublic Object getItem (int arg0) {// TODO Auto-generated method stubreturn arg0 ;}@ Overridepublic long getItemId (int arg0) {// TODO Auto-generated method stubreturn arg0;} @ Overridepublic View getView (int arg0, View arg1, ViewGroup arg2) {// TODO Auto-generated method stubImageView image = new ImageView (context); image. setImageResource (imgId [arg0]); image. setScaleType (ImageView. scaleType. FIT_XY); image. setLayoutParams (new Gallery. layoutParams (160,130); image. setBackgroundResource (item); return image ;}}}

Running image:

When we click the image in Chapter 2:

When you click the image below:

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