Android 循环滚动控件ViewFlipper，可实现跑马灯或轮播图效果

ViewFlipper——Android循环滚动控件

1、效果如下：

2、实现方法

（1）创建进出动画

上下滚动动画

y_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:fromYDelta="100%p"
        android:toYDelta="0"
        android:duration="1000"/>
</set>

y_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:fromYDelta="0"
        android:toYDelta="-100%p"
        android:duration="1000"/>
</set>

左右滚动动画

x_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:fromXDelta="100%p"
        android:toXDelta="0"
        android:duration="1000"/>
</set>

x_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:fromXDelta="0"
        android:toXDelta="-100%p"
        android:duration="1000"/>
</set>

（2）layout文件引用ViewFlipper

<ViewFlipper
    android:id="@+id/filpper"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:autoStart="true"
    android:flipInterval="2000"
    android:inAnimation="@anim/x_in"
    android:outAnimation="@anim/x_out"/>

（3）activity中java代码实现ViewFlipper跑马灯效果

TextView textView;
ViewFlipper viewFlipper;

viewFlipper= (ViewFlipper) findViewById(R.id.filpper);
for (int i = 0; i < 5; i++) {
    View view = LayoutInflater.from(getApplicationContext()).inflate(R.layout.layout_custom, null);
    textView = view.findViewById(R.id.myte1);
    textView.setText("sssssssss===="+i);

    viewFlipper.addView(view);
}

4、ViewFlipper的item点击事件——demo链接：

5、demo云盘链接：

在线回复云盘密码：qq1085220040

6、可实现banner轮播图效果

左右跑马灯

<LinearLayout android:id="@+id/ll_bottom" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:background="#FDC74B"> <TextView android:id="@+id/tv_message" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="15pt" android:layout_marginRight="15pt" android:ellipsize="marquee" android:focusable="true" android:focusableInTouchMode="true" android:gravity="center_vertical" android:includeFontPadding="false" android:marqueeRepeatLimit="marquee_forever" android:paddingBottom="15pt" android:paddingTop="15pt" android:singleLine="true" android:textColor="@color/black" android:textSize="36pt" /> </LinearLayout>

public class StringUtil { //长度加倍 public static String multiplyString(String str, int number) { if (str == null) { throw new NullPointerException("String is null!"); } if ("".equals(str)) { throw new IllegalArgumentException("The length of string is zero !"); } if (number == 0) { throw new IllegalArgumentException("Number is zero!"); } StringBuffer buffer = new StringBuffer(); for (int i = 0; i < number; i++) { buffer.append(str); } return buffer.toString(); } }  tvMessage.setText(aboutUsResult.getData().getApkmsg() + StringUtil.multiplyString(" ", 30));