layout :
<?xml version=”1.0″ encoding=”utf-8″?>
<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”
android:orientation=”vertical”
android:background=”#fff”
android:layout_width=”fill_parent”
android:layout_height=”fill_parent”
>
<ImageView
android:id=”@+id/imageView_welcome”
android:layout_width=”match_parent”
android:layout_height=”match_parent”
android:src=”@drawable/wellcom” />
</LinearLayout>
java:
public class Wellcom extends Activity implements AnimationListener{
private ImageView imageView = null;
private Animation alphaAnimation = null;
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.wellcome);
imageView = (ImageView)findViewById(R.id.imageView_welcome);
alphaAnimation = AnimationUtils.loadAnimation(this, R.anim.welcom_alpha);
alphaAnimation.setFillEnabled(true); //启动Fill保持
alphaAnimation.setFillAfter(true); //设置动画的最后一帧是保持在View上面
imageView.setAnimation(alphaAnimation);
alphaAnimation.setAnimationListener(this); //为动画设置监听
}
public void onAnimationEnd(Animation animation) {
//动画结束时结束欢迎界面并转到软件的主界面
Intent intent = new Intent(this, Bluetoothoyl.class);
startActivity(intent);
this.finish();
}
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
//在欢迎界面屏蔽BACK键,在退出的时候就不会返回这个欢迎页
if(keyCode==KeyEvent.KEYCODE_BACK) {
return false;
}
return false;
}
}
anim:
<set xmlns:android=”http://schemas.android.com/apk/res/android”
android:interpolator=”@android:anim/accelerate_interpolator”>
<alpha
android:fromAlpha=”0.0″
android:toAlpha=”1.0″
android:duration=”500″
/>
<alpha
android:fromAlpha=”1.0″
android:toAlpha=”0.2″
android:startOffset=”1000″
android:duration=”300″
/>
</set>