Android uses Animation-list for frame-by-frame Animation and android for frame-by-frame Animation.

Android uses Animation-list for frame-by-frame Animation and android for frame-by-frame Animation.
What we want to achieve

Prepare resource files and place them in res/drawableFile

Light01.png

Light02.png

Light03.png

Write loading.xmlPut in res/drawable

<! -- Animation-list: root tag oneshot: Indicates whether to display only once. If it is set to false, the loop playback animation will be continuously played. android: duration indicates the animation duration of the image --> <? Xml version = "1.0" encoding = "UTF-8"?> <Animation-list xmlns: android = "http://schemas.android.com/apk/res/android" android: oneshot = "false"> <item android: drawable = "@ drawable/light01" android: duration = "50"/> <item android: drawable = "@ drawable/light02" android: duration = "50"/> <item android: drawable = "@ drawable/light03" android: duration = "50"/> </animation-list>

In activity_main.xmlIn the layout file, write

<? 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"> <ImageView android: id = "@ + id/main_img_loading" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: padding = "5px" android: src = "@ drawable/loading"/> <Button android: id = "@ + id/main_bt_start" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: padding = "5px" android: text = ""/> <Button android: id = "@ + id/main_bt_stop" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: padding = "5px" android: text = "stop"/> </LinearLayout>

Write in Activity like this

Bt_start.setOnClickListener (new OnClickListener () {@ Override public void onClick (View v) {// obtain AnimationDrawable animationDrawable = (AnimationDrawable) animationIV. getDrawable (); // start animation animationDrawable. start () ;}}); bt_stop.setOnClickListener (new OnClickListener () {@ Override public void onClick (View v) {// get AnimationDrawable animationDrawable = (AnimationDrawable) animationIV. getDrawable (); // stop the animation animationDrawable. stop ();}});

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