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
}