【移動應用開發(fā)技術】如何在android項目中里ListView隱藏底部View

【移動應用開發(fā)技術】如何在android項目中里ListView隱藏底部View

這篇文章將為大家詳細講解有關如何在android項目中里ListView隱藏底部View，文章內容質量較高，因此在下分享給大家做個參考，希望大家閱讀完這篇文章后對相關知識有一定的了解。1。底部BottomView的內容如下，這個XML文件的內容是自定義的，根據(jù)各項目的內容需求來定義的，我例子中bottom_view.xml:<?xml

version="1.0"

encoding="UTF-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:id="@+id/button_layout"

android:layout_width="fill_parent"

android:layout_height="50dp"

android:background="#cbcbcb"

android:gravity="center_vertical"

android:orientation="horizontal"

>

<Button

android:layout_height="40dp"

android:layout_width="wrap_content"

android:layout_weight="1"

android:text="價格"

/>

<Button

android:layout_height="40dp"

android:layout_width="wrap_content"

android:layout_weight="1"

android:text="好評"

/>

<Button

android:layout_height="40dp"

android:layout_width="wrap_content"

android:layout_weight="1"

android:text="篩選"

/>

</LinearLayout>2、main.xml如下<?xml

version="1.0"

encoding="utf-8"?>

<RelativeLayout

xmlns:android="/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<com.example.BottomFloatListView.BottomFloatListView

android:id="@+id/listView"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:fadingEdge="none"

/>

<include

android:id="@+id/bottombar"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

layout="@layout/bottom_view"

>

</include>

</RelativeLayout>3、自定義ListView控件BottomFloatListViewpackage

com.example.BottomFloatListView;

import

android.content.Context;

import

android.os.Handler;

import

android.util.AttributeSet;

import

android.util.Log;

import

android.view.MotionEvent;

import

android.view.View;

import

android.view.ViewGroup;

import

android.view.animation.Animation;

import

android.view.animation.OvershootInterpolator;

import

android.view.animation.TranslateAnimation;

import

android.widget.*;

import

android.widget.AbsListView.OnScrollListener;

/**

*

底部View自動隱藏和消失listview(其他ListView可以繼承該類，如CtripBottomRefreshListView類等)

**/

public

class

BottomFloatListView

extends

ListView

implements

OnScrollListener

{

public

View

mBottomBar;

private

int

mCurrentScrollState;

private

boolean

bIsMoved

=

false;

private

boolean

bIsDown

=

false;

private

int

mDeltaY;

private

float

mMotionY;

private

int

oldFirstVisibleItem

=

0;

private

Handler

mHandler

=

new

Handler();

private

static

final

String

TAG

=

"BottomFloatListView";

public

BottomFloatListView(Context

context)

{

this(context,

null);

super.setOnScrollListener(this);

}

public

BottomFloatListView(Context

context,

AttributeSet

attrs)

{

this(context,

attrs,

0);

super.setOnScrollListener(this);

}

public

BottomFloatListView(Context

context,

AttributeSet

attrs,

int

defStyle)

{

super(context,

attrs,

defStyle);

super.setOnScrollListener(this);

}

@Override

public

void

setAdapter(ListAdapter

adapter)

{

super.setAdapter(adapter);

}

@Override

public

void

onScroll(AbsListView

view,

int

firstVisibleItem,

int

visibleItemCount,

int

totalItemCount)

{

showBottomViewOnBottom(visibleItemCount,

totalItemCount,

firstVisibleItem);

}

@Override

public

void

onScrollStateChanged(AbsListView

view,

int

scrollState)

{

hideBottomViewOnScrollStateChanged(view,

scrollState);

}

@Override

public

boolean

onTouchEvent(MotionEvent

ev)

{

float

y

=

ev.getY();

float

x

=

ev.getX();

Log.d("FloatListView",

"onTouchEvent"

+

""

+

x

+

""

+

y);

int

action

=

ev.getAction()

&

MotionEvent.ACTION_MASK;

switch

(action)

{

case

MotionEvent.ACTION_DOWN:

action_down(y);

break;

case

MotionEvent.ACTION_MOVE:

mDeltaY

=

(int)

(y

-

mMotionY);

bIsMoved

=

true;

//移動的時候，要移除掉顯示bottomView的消息

mHandler.removeCallbacks(showBottomBarRunnable);

//補齊action_down事件，因為有的時候，action_down

事件沒有執(zhí)行

action_down(y);

break;

case

MotionEvent.ACTION_UP:

bIsMoved

=

false;

bIsDown

=

false;

if

(!bIsMoved

&&

!bIsDown)

{

//

如果屏幕上什么沒做，則過2s之后要顯示bottomView

mHandler.postDelayed(showBottomBarRunnable,

2000);

}

if

(mDeltaY

<

0)

{

//下滑影藏

hideBottomBar();

}

else

{

//上滑顯示

showBottomBar();

}

bIsMoved

=

false;

break;

}

return

super.onTouchEvent(ev);

}

private

void

action_down(float

y){

mMotionY

=

y;

bIsDown

=

true;

Log.d(TAG,

"action

down

execed");

mHandler.removeCallbacks(showBottomBarRunnable);

}

/**

*

滑動到頂部時，要隱藏bottomView

*

@param

view

*

@param

scrollState

*/

private

void

hideBottomViewOnScrollStateChanged(AbsListView

view,

int

scrollState)

{

mCurrentScrollState

=

scrollState;

if(view!=null){

if

(view.getFirstVisiblePosition()

==

0

&&

scrollState

==

SCROLL_STATE_IDLE)

{

hideBottomBar();

Log.d(TAG,

"hide

bottom

view");

}

}

}

/**

*

顯示底部浮動欄

*/

public

void

showBottomBar()

{

if

(mBottomBar

!=

null

&&

mBottomBar.getVisibility()

==

View.GONE)

{

mBottomBar.setVisibility(View.INVISIBLE);

Animation

translateAnimation

=

new

TranslateAnimation(mBottomBar.getLeft(),

mBottomBar.getLeft(),30,

0);

translateAnimation.setDuration(300);

translateAnimation.setInterpolator(new

OvershootInterpolator(0.6f));

mBottomBar.startAnimation(translateAnimation);

translateAnimation.setAnimationListener(new

Animation.AnimationListener()

{

@Override

public

void

onAnimationStart(Animation

animation)

{

}

@Override

public

void

onAnimationRepeat(Animation

animation)

{

}

@Override

public

void

onAnimationEnd(Animation

animation)

{

mBottomBar.setVisibility(View.VISIBLE);

}

});

}

}

/**

*

隱藏浮動底部欄

*/

private

void

hideBottomBar()

{

if

(mBottomBar

!=

null

&&

mBottomBar.getVisibility()

==

View.VISIBLE)

{

Animation

translateAnimation

=

new

TranslateAnimation(mBottomBar.getLeft(),

mBottomBar.getLeft(),

0,

30);

translateAnimation.setDuration(300);

translateAnimation.setInterpolator(new

OvershootInterpolator(0.6f));

mBottomBar.startAnimation(translateAnimation);

translateAnimation.setAnimationListener(new

Animation.AnimationListener()

{

@Override

public

void

onAnimationStart(Animation

animation)

{

}

@Override

public

void

onAnimationRepeat(Animation

animation)

{

}

@Override

public

void

onAnimationEnd(Animation

animation)

{

mBottomBar.setVisibility(View.GONE);

}

});

}

}

/**

*

滑動到底部時直接顯示bottomView

*

@param

visibleItemCount

*

@param

totalItemCount

*

@param

firstVisibleItem

*/

private

void

showBottomViewOnBottom(int

visibleItemCount,

int

totalItemCount,

int

firstVisibleItem)

{

Log.d(TAG,

"visible

bottem

item

count:"

+

"firstVisibleItem:"

+

firstVisibleItem

+

"oldFirstVisibleItem:"

+

oldFirstVisibleItem

+

mBottomBar);

if(getLastVisiblePosition()

==

totalItemCount

-1

&&

mCurrentScrollState

!=

SCROLL_STATE_IDLE){

showBottomBar();

}

}

private

Runnable

showBottomBarRunnable

=

new

Runnable()

{

@Override

public

void

run()

{

showBottomBar();

}

};

/**

*

將需要隱藏顯示的view傳入

*

*

@param

bottomBar

*/

public

void

setBottomBar(ViewGroup

bottomBar)

{

this.mBottomBar

=

bottomBar;

}

}4、主界面測試的Activity，MainActivity代碼如下public

class

MainActivity

extends

Activity

{

private

BottomFloatListView

mBottomFloatListView;

@Override