Android.Hack.02_Animations
#01# TextView 和 ImageView
TextView和Imageview切换卡顿，为了实现更好的切换，可以用动画来实现，系统自带的TextViewSwitcher 和ImageViewSwitcher，其中设置自定义动画，可以使用如下Demo:
private TextSwitcher mTextSwitcher;
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.main); Animation in = AnimationUtils.loadAnimation(this, android.R.anim.fade_in); Animation out = AnimationUtils.loadAnimation(this, android.R.anim.fade_out); mTextSwitcher = (TextSwitcher) findViewById(R.id.your_textview); mTextSwitcher.setFactory(new ViewFactory() {
@Override public View makeView() { TextView t = new TextView(YourActivity.this); t.setGravity(Gravity.CENTER);
//21 Adding eye candy to your ViewGroup’s children
return t; } }); mTextSwitcher.setInAnimation(in); mTextSwitcher.setOutAnimation(out); }
参考链接：http://developer.android.com/reference/android/widget/TextSwitcher.html
http://developer.android.com/guide/topics/graphics/view-animation.html
#02# 为viewgroup的children添加动画-----LayoutAnimationController
例子是最好的诠释：
mListView = (ListView) findViewById(R.id.my_listview_id);
AnimationSet set = new AnimationSet(true);
Animation animation = new AlphaAnimation(0.0f, 1.0f);
animation.setDuration(50);
set.addAnimation(animation);
animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
- 1.0f, Animation.RELATIVE_TO_SELF, 0.0f);
animation.setDuration(100);
set.addAnimation(animation);
LayoutAnimationController controller = new LayoutAnimationController(
set, 0.5f);
Create LayoutAnimationController
and delay between animations. mListView.setLayoutAnimation(controller);
参考链接：http://developer.android.com/reference/android/view/animation/LayoutAnimationController.html
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#03# Android 使用NineOldAndroids实现绚丽的ListView左右滑动删除Item效果
Nine Old Androids 亦可以实现，图片的缩放的效果，跟官方API里面的图片效果一样。即是：：Ken Burns特效，
比较详细的Demo，已经有人翻译过了：
：http://blog.csdn.net/manoel/article/details/39164225
一个实现Ken Burns effect图片展示效果的效果android控件。Ken Burns effect是一种图片在切换之前，会缓慢在页面移动或者放大缩小，然后再慢慢切换过去。这样的效果使得每一张静止图片都有动态的效果感觉。类似的效果在电子相册，或者在电影视频对静态图片的处理中经常可见。
项目地址https://github.com/flavioarfaria/KenBurnsView
用法：
最简单的用法是直接将项目中提供的jar文件放入，然后在xml中添加：
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<com.flaviofaria.kenburnsview.KenBurnsView <span id="1_nwp" style="width: auto; height: auto; float: none;"><a id="1_nwl" href="http://cpro.baidu.com/cpro/ui/uijs.php?rs=1&u=http%3A%2F%2Fwww%2Ejcodecraeer%2Ecom%2Fa%2Fanzhuokaifa%2Fandroidkaifa%2F2014%2F0920%2F1698%2Ehtml&p=baidu&c=news&n=10&t=tpclicked3_hc&q=01072140_cpr&k=android&k0=android&kdi0=8&k1=%B6%AF%BB%AD&kdi1=8&k2=%B5%E7%D7%D3%CF%E0%B2%E1&kdi2=8&sid=861a9a46d40c70b6&ch=0&tu=u1921070&jk=015869c8e072c03f&cf=29&rb=0&fv=16&stid=9&urlid=0&luki=1&seller_id=1&di=128" target="_blank" mpid="1" style="text-decoration: none;"><span style="color:#0000ff;font-size:14px;width:auto;height:auto;float:none;">android</span></a></span>:id="@+id/image" android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/your_drawable" /> |
高级用法：
1.设置listener：
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KenBurnsView kbv = (KenBurnsView) findViewById(R.id.image);kbv.setTransitionListener(new TransitionListener() { @Override public void onTransitionStart(Transition transition) { } @Override public void onTransitionEnd(Transition transition) { }}); |
2.你可以用kbv.pause() 和 kbv.resume();暂停和恢复动画。
3.你可以设置动画的插值和过度时间：
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RandomTransitionGenerator generator = new RandomTransitionGenerator(duration, interpolator);kbv.setTransitionGenerator(generator);
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