Android 上下滚动TextSwitcher实例详解
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2023-11-23 22:52:52
android 上下滚动textswitcher实例详解
1.在activity中需要代码声明
textswitcher = (textswitcher)fin...
android 上下滚动textswitcher实例详解
1.在activity中需要代码声明
textswitcher = (textswitcher)findviewbyid(r.id.text_switcher); textswitcher.setfactory(new viewfactory() { @override public view makeview() { textview tv = new textview(mainactivity.this); tv.settextsize(typedvalue.complex_unit_dip, 16.0f); tv.settextcolor(color.red); return tv; } }); textswitcher.setinanimation(animationutils.loadanimation(this, r.anim.anim_in)); textswitcher.setoutanimation(animationutils.loadanimation(this, r.anim.anim_out));
2.两个anim动画xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillafter="true" android:shareinterpolator="false" android:zadjustment="top"> <translate android:duration="3000" android:fromydelta="100%p" android:toydelta="0" /> </set>
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillafter="true" android:shareinterpolator="false" android:zadjustment="top"> <translate android:duration="3000" android:fromydelta="0" android:toydelta="-100%p" /> </set>
<style name="pop_anim"> <item name="android:windowenteranimation">@anim/anim_in</item> <item name="android:windowexitanimation">@anim/anim_out</item> </style>
3.用线程或者定时器实现循环翻动。
thread t = new thread(new runnable() { @override public void run() { while (!flag) { message msg = new message(); msg.what = 1; msg.obj = getitem[i]; handler.sendmessage(msg); if (i== 2) { i = 0; } try { t.sleep(3000); i++; } catch (interruptedexception e) { // todo auto-generated catch block e.printstacktrace(); } } }
4.hanlder更新ui
private handler handler = new handler(){ public void handlemessage(android.os.message msg) { textswitcher.settext((string)msg.obj); super.handlemessage(msg); }; };
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