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Android之ViewFlipper滑屏切換效果

日期：2017/3/1 10:56:15 编辑：Linux編程

設置了三個頁面，布局文件如下：

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout xmlns:Android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="@drawable/dbj">
<ViewFlipper android:id="@+id/ViewFlipper"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:text="第 1 頁"
android:textSize="35dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="115dp"
android:layout_y="20dp"/>
</AbsoluteLayout>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:text="第 2 頁"
android:textSize="35dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="120dp"
android:layout_y="20dp"/>
</AbsoluteLayout>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:text="第 3 頁"
android:textSize="35dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="120dp"
android:layout_y="20dp"/>
</AbsoluteLayout>
</ViewFlipper>
<ImageButton android:layout_width="35dp"
android:background="@drawable/pre_button" android:layout_height="40dp"
android:id="@+id/preButton1" android:layout_x="101dp"
android:layout_y="404dp">
</ImageButton>
<ImageButton android:layout_width="40dp"
android:background="@drawable/next_button" android:layout_height="40dp"
android:id="@+id/nextButton1" android:layout_x="182dp"
android:layout_y="405dp">
</ImageButton>
</AbsoluteLayout>

主程序實現了OnGestureListener 接口，具體如下：

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.animation.AnimationUtils;
import android.widget.ImageButton;
import android.widget.ViewFlipper;
/**
* ViewFlipperTest.java
* @author Cloay
* 2011-6-24
*/
public class ViewFlipperTest extends Activity implements OnGestureListener {
private ViewFlipper flipper;
private GestureDetector detector;
private ImageButton pre1Button;
private ImageButton next1Button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.zd);
pre1Button = (ImageButton)findViewById(R.id.preButton1);
pre1Button.setOnTouchListener(new OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
if(event.getAction()==MotionEvent.ACTION_DOWN){ //按鈕按下背景圖片
pre1Button.setBackgroundResource(R.drawable.pre_button1);
}
//按鈕up後設置背景圖片，並滑動到前一頁面
else if(event.getAction()==MotionEvent.ACTION_UP){
pre1Button.setBackgroundResource(R.drawable.pre_button);
flipper.setInAnimation(AnimationUtils.loadAnimation(TestFlip.this, R.anim.push_right_in));
flipper.setOutAnimation(AnimationUtils.loadAnimation(TestFlip.this,R.anim.push_right_out));
flipper.showPrevious();
}
return false;
}
});
next1Button = (ImageButton)findViewById(R.id.nextButton1);
next1Button.setOnTouchListener(new OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
if(event.getAction()==MotionEvent.ACTION_DOWN){
next1Button.setBackgroundResource(R.drawable.next_button1);
}
//按鈕up後設置背景圖片，並滑動到後一頁面
else if(event.getAction()==MotionEvent.ACTION_UP){
next1Button.setBackgroundResource(R.drawable.next_button);
flipper.setInAnimation(AnimationUtils.loadAnimation(TestFlip.this, R.anim.push_left_in));
flipper.setOutAnimation(AnimationUtils.loadAnimation(TestFlip.this,R.anim.push_left_out));
flipper.showNext();
}
return false;
}
});
detector = new GestureDetector(this);
flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper);
}
public boolean onDoubleTap(MotionEvent e) {
if(flipper.isFlipping()) {
flipper.stopFlipping();
}else {
flipper.startFlipping();
}
return true;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return this.detector.onTouchEvent(event);
}
@Override
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,float velocityY) {
//用戶按下屏幕，快速移動後松開（就是在屏幕上滑動）
//e1:第一個ACTION_DOWN事件（手指按下的那一點）
//e2:最後一個ACTION_MOVE事件（手指松開的那一點）
//velocityX:手指在x軸移動的速度單位：像素/秒
//velocityY:手指在y軸移動的速度單位：像素/秒
if (e1.getX() - e2.getX() > 60) {
this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));
this.flipper.showNext();
return true;
} else if (e1.getX() - e2.getX() < -60) {
this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));
this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));
this.flipper.showPrevious();
return true;
}
return false;
}
@Override
public void onLongPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
}