Imageswitcher allows you to display an image. (The image is animated when it is changed)

Both imageview and imageswitcher are used to display images. However, the latter can have an animated effect when updating the displayed image.

Note:

1. to initialize imageswitcher, You need to define a viewfactory. The object generated by this viewfactory must be imageview.

Iswitcher. setfactory (New viewfactory () {@ override public view makeview () {// create an imageview object imageview = new imageview (mainactivity. this); // set the image stretching method imageview. setscaletype (imageview. scaletype. fit_start); // sets the image Filling Method imageview. setlayoutparams (New imageswitcher. layoutparams (layoutparams. wrap_content, layoutparams. wrap_content); Return imageview ;}});

 

2. There is the same method as imageview when setting an image. Generally, setimageresource (INT resid) and setimagedrawable (drawable) are used)

Layout File

<Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" xmlns: Tools = "http://schemas.android.com/tools" Android: layout_width = "match_parent" Android: layout_height = "match_parent" Android: Orientation = "vertical"><Imageswitcher Android: Id = "@ + ID/imageswitcher_id" Android: layout_width = "match_parent" Android: layout_height = "150dp" Android: layout_margin = "16dp" Android: layout_gravity = "center_horizontal" Android: inanimation = "@ Android: anim/slide_in_left" Android: outanimation = "@ Android: anim/slide_out_right"/><Button Android: Id = "@ + ID/prev_button_id" Android: layout_gravity = "center_horizontal" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: TEXT = "previous image"/> <button Android: Id = "@ + ID/next_button_id" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: layout_gravity = "center_horizontal" Android: text = "Next image"/> </linearlayout>

Mainactivity. Java

Package COM. example. imageswitcher; import android. app. activity; import android. OS. bundle; import android. view. view; import android. view. view. onclicklistener; import android. widget. button; import android. widget. gallery. layoutparams; import android. widget. imageswitcher; import android. widget. imageview; import android. widget. viewswitcher. viewfactory; public class mainactivity extends activity {imageswitcher iswitcher; button prevbtn, nextbtn; @ override protected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. activity_main); viewinit (); // The first way to set the image iswitcher. setimageresource (R. drawable. ic_launcher); prevbtn. setonclicklistener (New onclicklistener () {@ override public void onclick (view arg0) {// method stub automatically generated by todo iswitcher. setimageresource (R. drawable. ic_launcher) ;}}); nextbtn. setonclicklistener (New onclicklistener () {@ override public void onclick (view arg0) {// second method of setting the image iswitcher. setimagedrawable (getresources (). getdrawable (R. drawable. kale) ;}}) ;}private void viewinit () {iswitcher = (imageswitcher) findviewbyid (R. id. imageswitcher_id );
      Iswitcher. setfactory (New viewfactory () {@ override public view makeview () {// create an imageview object imageview = new imageview (mainactivity. this); // set the image stretching method imageview. setscaletype (imageview. scaletype. fit_start); // sets the image Filling Method imageview. setlayoutparams (New imageswitcher. layoutparams (layoutparams. wrap_content, layoutparams. wrap_content); ReturnImageview ;}});Prevbtn = (button) findviewbyid (R. Id. prev_button_id); nextbtn = (button) findviewbyid (R. Id. next_button_id );}}