Android高级UI ViewFlipper左右滑屏切换页面

一、简单的几幅图片自动切换实例

xml布局文件-ViewFlipper布局

<?xml version="1.0" encoding="utf-8"?>
<ViewFlipper xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ViewFlipper"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <include
        android:id="@+id/view1"
        layout="@layout/view1"
        />

    <include
        android:id="@+id/view2"
        layout="@layout/view2"
        />

    <include
        android:id="@+id/view3"
        layout="@layout/view3"
        />

    <include
        android:id="@+id/view4"
        layout="@layout/view4"
        />

</ViewFlipper>

各个画面的布局

View1:其中@drawable/video_greenhouse_1为自己准备的图片

一共View1~View4四个界面，不重复展示代码。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/video_greenhouse_1">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="view1"
        android:textSize="30sp"
        android:layout_gravity="center"/>

</LinearLayout>

java：ViewFlipper的使用

public class ViewFlipperActivity extends AppCompatActivity {

    ViewFlipper viewFlipper = null; //ViewFlipper控件

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_view_flipper);

        viewFlipper = (ViewFlipper) findViewById(R.id.ViewFlipper);//获取自动切换

        viewFlipper.setAutoStart(true); //设置自动开始
        viewFlipper.setFlipInterval(1000); //切换间隔为1s
    }
}

二、左右滑屏切换画面实例

步骤

1-注释掉Activity中自动切换的代码

viewFlipper.setAutoStart(true); //设置自动开始

viewFlipper.setFlipInterval(1000); //切换间隔为1s

2-实现OnTouchListenner用于监听触屏

3-设置监听器

java代码

public class ViewFlipperActivity extends AppCompatActivity implements View.OnTouchListener{

    ViewFlipper viewFlipper = null; //ViewFlipper控件

    private float touchDownX;//手指按下的X坐标
    private float touchUpX;//手指松开的X坐标

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_view_flipper);

        viewFlipper = (ViewFlipper) findViewById(R.id.ViewFlipper);//获取自动切换
        viewFlipper.setOnTouchListener(this);
//        viewFlipper.setAutoStart(true); //设置自动开始
//        viewFlipper.setFlipInterval(1000); //切换间隔为1s
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) { //触屏

        if(event.getAction() == MotionEvent.ACTION_DOWN) {
            //要取得左右滑动时手指“按下”的X坐标
            touchDownX = event.getX(); //
            return true;
        }else if(event.getAction() == MotionEvent.ACTION_UP){
            //要取得左右滑动时手指“松开”的X坐标
            touchUpX = event.getX(); //
            if(touchUpX - touchDownX > 100)//从左向右
            {
                viewFlipper.showPrevious(); //从左向右,显示上一幅图片
            }else if(touchDownX - touchUpX > 100)
            {
                viewFlipper.showNext(); //从左向右,显示下一幅图片
            }
            return true;
        }
        return false;
    }
}

切换的动画效果

1-创建动画目录

在res下面创建目录anim

2-创建动画xml

在anim中创建四种动画
push_left_in.xml

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

    <translate android:duration="500"
        android:fromXDelta="100.0%p"
        android:toXDelta="0.0"/>

    <alpha android:duration="500"
        android:fromAlpha="0.1"
        android:toAlpha="1.0"/>

</set>

push_left_out.xml

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

    <translate android:duration="500"
        android:fromXDelta="0.0"
        android:toXDelta="-100.0%p"/>

    <alpha android:duration="500"
        android:fromAlpha="1.0"
        android:toAlpha="0.1"/>

</set>

push_right_in.xml

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

    <translate android:duration="500"
        android:fromXDelta="-100.0%p"
        android:toXDelta="0.0"/>

    <alpha android:duration="500"
        android:fromAlpha="0.1"
        android:toAlpha="1.0"/>

</set>

push_right_out.xml

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

    <translate android:duration="500"
        android:fromXDelta="0.0"
        android:toXDelta="100.0%p"/>

    <alpha android:duration="500"
        android:fromAlpha="1.0"
        android:toAlpha="0.1"/>

</set>

3-设置动画效果

if(touchUpX - touchDownX > 100)//从左向右
{
                //设置切换动画
                viewFlipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));
                viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));
                //显示上一个View
                viewFlipper.showPrevious(); //从左向右,显示上一幅图片
}else if(touchDownX - touchUpX > 100){
                //设置切换动画
                viewFlipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
                viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));

                viewFlipper.showNext(); //从左向右,显示下一幅图片
}