【移动应用开发技术】Android如何实现仿网易新闻图片详情下滑隐藏效果

【移动应用开发技术】Android如何实现仿网易新闻图片详情下滑隐藏效果

这篇文章主要为大家展示了“Android如何实现仿网易新闻图片详情下滑隐藏效果”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让在下带领大家一起研究并学习一下“Android如何实现仿网易新闻图片详情下滑隐藏效果”这篇文章吧。效果图：实例代码

public

class

InfoTextView

extends

AutoRelativeLayout

{

private

Context

context;

private

int

lastY;

private

int

offY;

private

int

MIN_HEIGHT

=

600;

public

InfoTextView(Context

context)

{

super(context);

this.context

=

context;

init();

}

public

InfoTextView(Context

context,

AttributeSet

attrs)

{

super(context,

attrs);

this.context

=

context;

init();

}

public

InfoTextView(Context

context,

AttributeSet

attrs,

int

defStyle)

{

super(context,

attrs,

defStyle);

this.context

=

context;

init();

}

private

void

init()

{

View

root

=

inflate(context,

R.layout.ad_detail_text_layout,

this);

}

@Override

public

boolean

onInterceptTouchEvent(MotionEvent

ev)

{

return

true;

}

@Override

public

boolean

onTouchEvent(MotionEvent

event)

{

return

true;

}

@Override

public

boolean

dispatchTouchEvent(MotionEvent

ev)

{

boolean

isConsume

=

false;

int

y

=

(int)

ev.getY();

switch

(ev.getAction())

{

case

MotionEvent.ACTION_DOWN:

isConsume

=

true;

lastY

=

y;

break;

case

MotionEvent.ACTION_MOVE:

offY

=

y

-

lastY;

int[]

screenSize

=

ScreenUtils.getScreenSize(context,

false);

if

(getTop()

>=

(screenSize[1]

-

MIN_HEIGHT))

{

break;

}

//

Log.d("yzk",

"y

"

+

y

+

"

getTop

"

+

getTop()

//

+

"

getBottom

"

+

getBottom()

//

+

"

screenSize[1]

-

getMeasuredHeight

"

+

(screenSize[1]

-

getMeasuredHeight())

//

+

"

screenSize[1]

-

MIN_HEIGHT

"

+

(screenSize[1]

-

MIN_HEIGHT));

if

((offY

>

0

&&

getTop()

<

screenSize[1]

-

MIN_HEIGHT)

||

offY

<

0

&&

getTop()

>

screenSize[1]

-

getMeasuredHeight())

{

layout(getLeft(),

getTop()

+

offY,

getRight(),

getBottom()

+

offY);

}

break;

cas