本文实例为大家分享了Android属性动画使用的具体代码,供大家参考,具体内容如下
MainActivity.java
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/* 属性动画的特点:动画效果会改变控件的位置.且开启动画的是动画对象,而不是控件对象. 只有旋转的属性动画是经常用的,注意参数. 注意:这些方法都是安卓在3.0以后出现的新特性,所以要把AndroidManifest.xml里的android:minSdkVersion值修改为11以上 */ //注释后面有222的暂时不用管. public class MainActivity extends AppCompatActivity implements View.OnClickListener { private ImageButton imageView; private Button alpha_bt; private Button rotationY_bt; private Button scaleX_bt; private Button translationX_bt; private Button AnimatorSet_bt; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 对控件进行初始化 init(); // 此处用的是xml的形式.引用在Xml里的属性动画资源. AnimatorInflater.loadAnimator(上下文,R.animator..)222 Animator Xmlanimator = AnimatorInflater.loadAnimator( this , R.animator.objectanimator); // 把要做动画控件对象放进去.Animator.setTarget(View对象);222 Xmlanimator.setTarget(imageView); // 开启动画.Animator.start.222 Xmlanimator.start(); } // 对于控件进行初始化 private void init() { //找到ImageView控件对象 imageView = (ImageButton) findViewById(R.id.animation_iv); //找到Button控件对象. alpha_bt = (Button) findViewById(R.id.alpha_bt); rotationY_bt = (Button) findViewById(R.id.rotationY_bt); scaleX_bt = (Button) findViewById(R.id.scaleX_bt); translationX_bt = (Button) findViewById(R.id.translationY_bt); AnimatorSet_bt = (Button) findViewById(R.id.AnimatorSet_bt); //为button设置点击事件 alpha_bt.setOnClickListener( this ); rotationY_bt.setOnClickListener( this ); scaleX_bt.setOnClickListener( this ); translationX_bt.setOnClickListener( this ); AnimatorSet_bt.setOnClickListener( this ); } /** * 根据点击事件类型.调用控件做属性动画的 * * @param view */ @Override public void onClick(View view) { switch (view.getId()) { case R.id.alpha_bt: //做透明动画,参数1:View,代表你要修改那个控件的属性. 参数2:propertyName代表实现什么样子的动画:"alpha",String类型. //参数3:float... values,控件修改的参数,new float[]{0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0f} ObjectAnimator alpha = ObjectAnimator.ofFloat(imageView, "alpha" , new float []{ 0 .0f, 0 .2f, 0 .4f, 0 .6f, 0 .8f, 1 .0f}); //设置动画执行时长.setDuration alpha.setDuration( 2000 ); //设置动画执行的模式setRepeatMode,参数用ObjectAnimator引用. alpha.setRepeatMode(ObjectAnimator.RESTART); //设置动画执行的次数.setRepeatCount alpha.setRepeatCount( 1 ); //使用ObjectAnimator对象开启动画. alpha.start(); break ; case R.id.rotationY_bt: //做旋转动画,"rotationY".rotationX,rotation new float[]{90f, 180f, 270f, 360f} ObjectAnimator rotationY = ObjectAnimator.ofFloat(imageView, "rotationY" , new float []{90f, 180f, 270f, 360f}); rotationY.setDuration( 2000 ); rotationY.setRepeatMode(ObjectAnimator.RESTART); rotationY.setRepeatCount( 1 ); rotationY.start(); break ; case R.id.scaleX_bt: //做缩放动画,scaleX,scaleY new float[]{1f, 2f, 3f, 4f, 5f, 6f,1f} ObjectAnimator scaleX = ObjectAnimator.ofFloat(imageView, "scaleX" , new float []{1f, 2f, 3f, 4f, 5f, 6f, 1f}); scaleX.setDuration( 2000 ); scaleX.setRepeatMode(ObjectAnimator.RESTART); scaleX.setRepeatCount( 1 ); scaleX.start(); break ; case R.id.translationY_bt: //做平移动画,translationY,translationX new float[]{10f, 20f, 30f, 40f, 60f, 80f} ObjectAnimator translationY = ObjectAnimator.ofFloat(imageView, "translationY" , new float []{10f, 20f, 30f, 40f, 60f, 80f}); translationY.setDuration( 2000 ); translationY.setRepeatMode(ObjectAnimator.RESTART); translationY.setRepeatCount( 1 ); translationY.start(); //做动画集合AnimatorSet,分别创建两个动画对象.注意playTogether(动画对象...)和playSequentially的区别.最后开启动画.start case R.id.AnimatorSet_bt: AnimatorSet set = new AnimatorSet(); ObjectAnimator oa = ObjectAnimator.ofFloat(imageView, "translationX" , new float []{10f, 20f, 30f, 40f, 60f, 80f}); oa.setDuration( 3000 ); ObjectAnimator oa2 = ObjectAnimator.ofFloat(imageView, "translationY" , new float []{-10f, -20f, -30f, -40f, -60f, -80f}); oa2.setDuration( 3000 ); set.playTogether(oa, oa2); set.start(); break ; default : break ; } } } |
activity_main.xml
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< LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "match_parent" android:orientation = "vertical" > <!-- 注意background的属性置为null --> < Button android:id = "@+id/alpha_bt" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "alpha" /> < Button android:id = "@+id/translationY_bt" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "translationY" /> < Button android:id = "@+id/scaleX_bt" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "scaleX" /> < Button android:id = "@+id/rotationY_bt" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "rotationY" /> < Button android:id = "@+id/AnimatorSet_bt" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "AnimatorSet" /> < ImageButton android:onClick = "yyyy" android:id = "@+id/animation_iv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_gravity = "center" android:src = "@drawable/a8" android:background = "@null" /> </ LinearLayout > |
在res目录下创建animator文件夹在文件夹里创建以下xml
objectanimator.xml
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< objectAnimator xmlns:android = "http://schemas.android.com/apk/res/android" android:propertyName = "rotationX" android:duration = "3000" android:repeatCount = "1" android:repeatMode = "reverse" android:startOffset = "0" android:valueFrom = "360.0" > </ objectAnimator > <!--注意:在xml定义动画类的属性,浮点型小数,直接写小数即可,不用再带f. 提示:控件位移的参照单位在xml文件里有所不同,不过更简单,不用再特意去定义参照物属性了,直接是根据值,区分两种方式: 一种是以整个屏幕为参照物,在xml文件属性定义值是int%p; 一种以控件自身大小为参照物,在xml文件属性定义值是int--> |
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作者:FanRQ_
来源:CSDN
原文:https://blog.csdn.net/FanRQ_/article/details/84072052
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