Android使用ViewFlipper和GestrueDetector共同实现滑屏效果实例
本文实例讲述了Android使用ViewFlipper和GestrueDetector共同实现滑屏效果。分享给大家供大家参考，具体如下：
关于GestureDetector的相关知识，前面已经介绍过了，不懂的大家可以去了解一下。
1.main.xml
<?xmlversion="1.0"encoding="utf-8"?> <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/bg" android:orientation="vertical"> <ViewFlipper android:id="@+id/viewFlipper1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:persistentDrawingCache="animation" android:flipInterval="1000" android:inAnimation="@anim/push_left_in" android:outAnimation="@anim/push_left_out" > <includeandroid:id="@+id/lay1"layout="@layout/layout1"/> <includeandroid:id="@+id/lay2"layout="@layout/layout2"/> </ViewFlipper> </LinearLayout>
注：layout1和layout2布局很简单，就是有一个textview和一个button，就不在这里写出了。其中包含了两个特效xml文件，放在res/anim下
1.push_left_in
<?xmlversion="1.0"encoding="utf-8"?> <setxmlns:Android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="100%p" android:toXDelta="0" android:duration="500"/> <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="500"/> </set>
2push_left_out
<?xmlversion="1.0"encoding="utf-8"?> <setxmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="0" android:toXDelta="-100%p" android:duration="500"/> <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="500"/> </set>
主类：
packagecom.wj.gesture;
importandroid.app.Activity;
importandroid.os.Bundle;
importandroid.view.GestureDetector;
importandroid.view.GestureDetector.OnDoubleTapListener;
importandroid.view.GestureDetector.OnGestureListener;
importandroid.view.MotionEvent;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.view.View.OnTouchListener;
importandroid.view.animation.AccelerateInterpolator;
importandroid.view.animation.Animation;
importandroid.view.animation.TranslateAnimation;
importandroid.widget.Button;
importandroid.widget.TextView;
importandroid.widget.Toast;
importandroid.widget.ViewFlipper;
publicclassGestureDetectorTestextendsActivityimplementsOnClickListener,OnTouchListener,OnGestureListener,OnDoubleTapListener{
GestureDetectorgestureDetector;
privateButtonnext=null,up=null;
privateViewFlipperflipper=null;
privatestaticfinalintFLING_MIN_DISTANCE=100;
privatestaticfinalintFLING_MIN_VELOCITY=200;
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initview();
setListener();
}
privatevoidinitview(){
gestureDetector=newGestureDetector(this);
next=(Button)this.findViewById(R.id.button1);
up=(Button)this.findViewById(R.id.button2);
next.setOnClickListener(this);
up.setOnClickListener(this);
flipper=(ViewFlipper)this.findViewById(R.id.viewFlipper1);
flipper.setLongClickable(true);
}
privatevoidsetListener(){
flipper.setOnTouchListener(this);
}
@Override
publicbooleanonTouch(Viewv,MotionEventevent){
//Toast.makeText(this,"ontouch",1000).show();
returngestureDetector.onTouchEvent(event);
}
@Override
publicbooleanonDown(MotionEvente){
//TODOAuto-generatedmethodstub
returnfalse;
}
@Override
publicvoidonShowPress(MotionEvente){
//TODOAuto-generatedmethodstub
}
@Override
publicbooleanonSingleTapUp(MotionEvente){
//TODOAuto-generatedmethodstub
returnfalse;
}
@Override
publicbooleanonScroll(MotionEvente1,MotionEvente2,floatdistanceX,
floatdistanceY){
returnfalse;
}
@Override
publicvoidonLongPress(MotionEvente){
//TODOAuto-generatedmethodstub
}
@Override
publicbooleanonFling(MotionEvente1,MotionEvente2,floatvelocityX,
floatvelocityY){
if(e1.getX()-e2.getX()>FLING_MIN_DISTANCE&&Math.abs(velocityX)>FLING_MIN_VELOCITY){
flipper.setInAnimation(inFromRightAnimation());
flipper.setOutAnimation(outToLeftAnimation());
flipper.showNext();
}elseif(e2.getX()-e1.getX()>FLING_MIN_DISTANCE&&Math.abs(velocityX)>FLING_MIN_VELOCITY){
flipper.setInAnimation(inFromLeftAnimation());
flipper.setOutAnimation(outToRightAnimation());
flipper.showPrevious();
}
returnfalse;
}
protectedAnimationinFromRightAnimation(){
AnimationinFromRight=newTranslateAnimation(
Animation.RELATIVE_TO_PARENT,+1.0f,
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,0.0f);
inFromRight.setDuration(500);
inFromRight.setInterpolator(newAccelerateInterpolator());
returninFromRight;
}
protectedAnimationoutToLeftAnimation(){
AnimationouttoLeft=newTranslateAnimation(
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,-1.0f,
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,0.0f);
outtoLeft.setDuration(500);
outtoLeft.setInterpolator(newAccelerateInterpolator());
returnouttoLeft;
}
protectedAnimationinFromLeftAnimation(){
AnimationinFromLeft=newTranslateAnimation(
Animation.RELATIVE_TO_PARENT,-1.0f,
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,0.0f);
inFromLeft.setDuration(500);
inFromLeft.setInterpolator(newAccelerateInterpolator());
returninFromLeft;
}
protectedAnimationoutToRightAnimation(){
AnimationouttoRight=newTranslateAnimation(
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,+1.0f,
Animation.RELATIVE_TO_PARENT,0.0f,
Animation.RELATIVE_TO_PARENT,0.0f);
outtoRight.setDuration(500);
outtoRight.setInterpolator(newAccelerateInterpolator());
returnouttoRight;
}
@Override
publicbooleanonSingleTapConfirmed(MotionEvente){
//TODOAuto-generatedmethodstub
returnfalse;
}
@Override
publicbooleanonDoubleTap(MotionEvente){
//TODOAuto-generatedmethodstub
returnfalse;
}
@Override
publicbooleanonDoubleTapEvent(MotionEvente){
//TODOAuto-generatedmethodstub
returnfalse;
}
@Override
publicvoidonClick(Viewv){
if(v==next){
flipper.showNext();
}else{
flipper.showPrevious();
}
}
}
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