android图片自动定时切换
布局文件：
<RelativeLayout
android:id="@+id/rv_img_nupt"android:layout_width="match_parent"
android:layout_height="100dp"
android:gravity="center">
<!-- ViewFlipper是可以使用动画的控件，可以分页，这里因个人项目需要，把像素给定了 -->
<ViewFlipper
android:id="@+id/viewFlipper"
android:layout_width="853px"
android:layout_height="510px">
<!-- 第一页 -->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/eduinfo_img_nupt1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:contentDescription="@string/app_name"
android:background="@drawable/ying"/>
</LinearLayout>
<!-- 第二页 -->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/eduinfo_img_nupt2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:contentDescription="@string/app_name"
android:background="@drawable/biye"/>
</LinearLayout>
<!-- 第三页 -->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/eduinfo_img_nupt3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:contentDescription="@string/app_name"
android:background="@drawable/zhaopian"/>
</LinearLayout>
</ViewFlipper>
</RelativeLayout>
Activity：
public class EduinfoLayoutActivity extends Activity implements OnClickListener{
//返回主界面的ImageView
private ImageView imgSlide;
private ViewFlipper viewFlipper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_eduinfo_layout);
//返回主界面的ImageView
imgSlide=(ImageView) findViewById(R.id.img_slide);
imgSlide.setOnClickListener(this);
//初始化参数
final Animation in = AnimationUtils.loadAnimation(this, R.anim.in_alpha);
final Animation out = AnimationUtils.loadAnimation(this, R.anim.out_alpha);
viewFlipper = (ViewFlipper) findViewById(R.id.viewFlipper);
//开始图片自动播放，第一个时间为间隔时间，第二个时间未知
new CountDownTimer(3500,100000) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
viewFlipper.setInAnimation(in);
viewFlipper.setOutAnimation(out);
viewFlipper.showNext();
start();
}
}.start();
}
}
anim文件夹下建一个in_alpha.xml
<?xml version="1.0" encoding="utf-8"?>
<set android:oneshot="false" xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0"
android:toAlpha="1.0"
android:duration="2000"/>
</set>
anim文件夹下建一个out_alpha.xml
<?xml version="1.0" encoding="utf-8"?>
<set android:oneshot="false" xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0"
android:toAlpha="1.0"
android:duration="2000"/>
</set>