一手遮天 Android - view（集合类）: ViewFlipper 基础
示例如下:
/view/collection/ViewFlipperDemo1.java
/**
* ViewFlipper - 页面翻页控件
*
* 本例介绍了如何让 ViewFlipper 自动翻页，以及如何通过手势操作翻页 ViewFlipper
*/
package com.webabcd.androiddemo.view.collection;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.widget.ViewFlipper;
import com.webabcd.androiddemo.R;
public class ViewFlipperDemo1 extends AppCompatActivity {
// 用于演示 ViewFlipper 的自动翻页
private ViewFlipper mViewFlipper1;
// 用于演示 ViewFlipper 的手势操作翻页
private ViewFlipper mViewFlipper2;
// 用于保存手指触摸屏幕时的 x 坐标
private float mStartTouchX;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_collection_viewflipperdemo1);
mViewFlipper1 = findViewById(R.id.viewFlipper1);
mViewFlipper2 = findViewById(R.id.viewFlipper2);
sample();
}
private void sample() {
/**
* addView() - 为 ViewFlipper 添加一个子 view
* setFlipInterval() - 翻页动画的间隔时间，单位：毫秒
* setInAnimation() - 进入的动画
* setOutAnimation() - 离开的动画
* startFlipping() - 启动动画（默认是不会启动动画的）
* stopFlipping() - 停止动画
*/
mViewFlipper1.setFlipInterval(3000);
mViewFlipper1.setInAnimation(this, R.anim.viewflipper_right_in);
mViewFlipper1.setOutAnimation(this, R.anim.viewflipper_right_out);
mViewFlipper1.startFlipping();
}
// 通过手势控制 ViewFlipper 的翻页
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
// 手指触摸时
case MotionEvent.ACTION_DOWN: {
// 保存手指触摸屏幕时的 x 坐标
mStartTouchX = event.getX();
break;
}
// 手指触摸后移动时
case MotionEvent.ACTION_MOVE: {
break;
}
// 当手离开时
case MotionEvent.ACTION_UP: {
/**
* setInAnimation() - 进入的动画
* setOutAnimation() - 离开的动画
* showNext() - 翻页到 ViewFlipper 中的下一个 view
* showPrevious() - 翻页到 ViewFlipper 的上一个 view
*/
// 手指从右向左滑动（这里判断手指的横向移动距离要大于 100 才生效）
if (mStartTouchX - event.getX() > 100) {
mViewFlipper2.setInAnimation(this, R.anim.viewflipper_right_in);
mViewFlipper2.setOutAnimation(this, R.anim.viewflipper_right_out);
mViewFlipper2.showNext();
}
// 手指从左向右滑动（这里判断手指的横向移动距离要大于 100 才生效）
else if (event.getX() - mStartTouchX > 100) {
mViewFlipper2.setInAnimation(this, R.anim.viewflipper_left_in);
mViewFlipper2.setOutAnimation(this, R.anim.viewflipper_left_out);
mViewFlipper2.showPrevious();
}
break;
}
}
return true;
}
}
/layout/activity_view_collection_viewflipperdemo1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ViewFlipper
android:id="@+id/viewFlipper1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/orange"
android:padding="24dp"
android:layout_margin="4dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 1" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 2" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 3" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 4" />
</ViewFlipper>
<ViewFlipper
android:id="@+id/viewFlipper2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/orange"
android:padding="24dp"
android:layout_margin="4dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 1" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 2" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 3" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/blue"
android:textColor="@color/white"
android:textAlignment="center"
android:text="item 4" />
</ViewFlipper>
</LinearLayout>
/anim/viewflipper_right_in.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<!--从右到左进入-->
<translate
android:duration="2000"
android:fromXDelta="100%p"
android:toXDelta="0" />
</set>
/anim/viewflipper_right_out.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<!--从右到左离开-->
<translate
android:duration="2000"
android:fromXDelta="0"
android:toXDelta="-100%p" />
</set>
/anim/viewflipper_left_in.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<!--从左到右进入-->
<translate
android:duration="500"
android:fromXDelta="-100%p"
android:toXDelta="0" />
</set>
/anim/viewflipper_left_out.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<!--从左到右离开-->
<translate
android:duration="500"
android:fromXDelta="0"
android:toXDelta="100%p" />
</set>