UI系列_roration旋转动画

xml实现

         res  /  anim  / roration

<set xmlns:android="http://schemas.android.com/apk/res/android">   <rotate android:fromDegrees="100"           android:toDegrees="360"           android:duration="5000"  /></set>

           mainAcitivy.java 

public class MainActivity extends Activity {    private ImageView img;    private Button startBut;    private Animation rorate=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);img=(ImageView)findViewById(R.id.img);startBut=(Button)findViewById(R.id.button);rorate=AnimationUtils.loadAnimation(this, R.anim.roration);startBut.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v) {img.startAnimation(rorate);//不要用setAnimation(rorate) 这个启动需要条件}});}}

           

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