补间动画

1. layout中的 activity_main.xml 布局

<RelativeLayout 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"
    >
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    >
    <Button
        android:layout_width="0dip"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:onClick="alph"
        android:text="透明度" />

    <Button
        android:layout_width="0dip"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:onClick="trans"
        android:text="位移" />

    <Button
        android:layout_width="0dip"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:onClick="scale"
        android:text="缩放" />

    <Button
        android:layout_width="0dip"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:onClick="rotate"
        android:text="旋转" />
</LinearLayout>

        <ImageView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/imageview"
             android:background="@drawable/ic_launcher"
             android:layout_centerInParent="true"
            />

</RelativeLayout>

2.透明度、旋转、缩放、位移动画代码的实现 MainActiviy.java

public class MainActivity extends Activity {
    ImageView imageview;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		imageview = (ImageView) findViewById(R.id.imageview);

	}

    public void alph(View view){
	  AlphaAnimation aa=new AlphaAnimation(0.0f, 1.0f);
	  aa.setDuration(2000);
	  aa.setRepeatCount(1);
	  aa.setRepeatMode(Animation.REVERSE);
	  imageview.startAnimation(aa);

     }
    public void scale(View view){
    	ScaleAnimation sa = new ScaleAnimation(0.1f, 2.0f, 0.1f, 2.0f, Animation.RELATIVE_TO_SELF,
				0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
		sa.setDuration(2000);
		sa.setRepeatCount(1);
		sa.setRepeatMode(Animation.REVERSE);
		imageview.startAnimation(sa);

    }
    public void trans(View view){
  	  TranslateAnimation ta = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f,
  			  Animation.RELATIVE_TO_PARENT,0.5f,
  			  Animation.RELATIVE_TO_PARENT,0.0f,
  			  Animation.RELATIVE_TO_PARENT,0.0f
  			  );
  	  ta.setDuration(2000);
  	  ta.setRepeatCount(1);
  	  ta.setRepeatMode(Animation.REVERSE);
  	  imageview.startAnimation(ta);

    }
    public void rotate(View view){
    	RotateAnimation ra = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF,
				0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
		ra.setDuration(2000);
		ra.setRepeatCount(1);
		ra.setRepeatMode(Animation.REVERSE);
		imageview.startAnimation(ra);

    }

}

3.组合动画，AnimationSet，把缩放、旋转、平移、透明度动画可以一起放入AnimationSet中，然后组合动画一起起作用。

未实现--------