1、创建 ScrollListener 接口监听滑动距离

public interface ScrollListener {void onScrollChanged(ScrollListenerView scrollView, int x, int y, int oldX, int oldY);
}

view阴影属性

android:elevation="4dp"

2、重写 ScrollView 自定义 ScrollListenerView

public class ScrollListenerView extends ScrollView {private ScrollListener scrollViewListener = null;public ScrollListenerView(Context context) {super(context);}public ScrollListenerView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}public ScrollListenerView(Context context, AttributeSet attrs) {super(context, attrs);}public void setScrollListener(ScrollListener scrollViewListener) {this.scrollViewListener = scrollViewListener;}@Overrideprotected void onScrollChanged(int x, int y, int oldX, int oldY) {super.onScrollChanged(x, y, oldX, oldY);if (scrollViewListener != null) {scrollViewListener.onScrollChanged(this, x, y, oldX, oldY);}}
}

判断scrollView是否滚动到底部方法

@Override
protected void onScrollChanged(int x, int y, int oldX, int oldY) {super.onScrollChanged(x, y, oldX, oldY);if (scrollViewListener != null) {scrollViewListener.onScrollChanged(this, x, y, oldX, oldY);}if (getScrollY() + getHeight() >= computeVerticalScrollRange()) {Log.d("lgq", "------滚动到最下方------");} else {Log.d("Lgq", "没有到最下方");}
}

3、在layout xml文件使用ScrollListenerView

<com.tianxinyw.mapclient.views.ScrollListenerViewandroid:id="@+id/slv"android:layout_width="match_parent"android:layout_height="match_parent"android:scrollbars="none"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="match_parent">

</RelativeLayout></com.tianxinyw.mapclient.views.ScrollListenerView>

上下层标题渐变色布局，titlelitwo是下层

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:id="@+id/activity_popup"android:orientation="vertical"><LinearLayoutandroid:id="@+id/titlelitwo"android:layout_width="match_parent"android:layout_height="38dp"android:background="@color/homeiconokc"android:gravity="center"android:orientation="horizontal"><TextViewandroid:id="@+id/titletetwo"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="天鑫计费2"android:textColor="@color/white"android:textSize="16dp"android:textStyle="bold"/></LinearLayout><LinearLayoutandroid:id="@+id/lishititleli"android:layout_width="match_parent"android:layout_height="38dp"android:background="@color/homeiconokc"android:gravity="center"android:orientation="horizontal"><TextViewandroid:id="@+id/lishititlete"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="天鑫计费"android:textColor="@color/white"android:textSize="16dp"android:textStyle="bold"/></LinearLayout>

4、Activity 实现滑动距离监听接口

public class HomeFragment extends BaseFragment implements ScrollListener{

初始化

@BindView(R.id.slv)
ScrollListenerView slv;

设置监听

slv.setScrollListener(this);

实现方法：

@Override
public void onScrollChanged(ScrollListenerView scrollView, int x, int y, int oldX, int oldY) {if (y - oldY > 0&&y>0) {float f = (y + 0f) / 400;//滑动距离350pxif (f > 1) {f = 1f;}if (f < 0) {f = 0;}if (f > 0 && f < 0.3) {f = (float) 0.333;}Log.i("lgq", "......向上滑。。。" + f + ".......y====" + y);lishititleli.setBackgroundColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.homeiconokc), (int) (1 - f * 1 * 0xff)));lishititlete.setTextColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.white), (int) (1 - f * 1 * 0xff)));titlelitwo.setBackgroundColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.homeiconokc), (int) (f * 1 * 0xff)));titletetwo.setTextColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.white), (int) (f * 1 * 0xff)));} else if (y-oldY<0&&y>=0){float f = (y + 0f) / 400;//滑动距离350pxif (f > 1) {f = 1f;}if (f < 0) {f = 0;}Log.e("lgq", "......向xia滑。。。" + f + ".......y====" + y + "......zhi====" + (1 - f * 1 * 0xff) + ".....yy===" + f * 1 * 0xff);if (y <= 0||f<0.01) {lishititleli.setBackgroundColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.homeiconokc), (int) (1 * 1 * 0xff)));lishititlete.setTextColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.white), (int) (1 * 1 * 0xff)));return;}lishititleli.setBackgroundColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.homeiconokc), (int) (1 - f * 1 * 0xff)));lishititlete.setTextColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.white), (int) (1 - f * 1 * 0xff)));titlelitwo.setBackgroundColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.homeiconokc), (int) (f * 1 * 0xff)));titletetwo.setTextColor(Utils.changeAlpha(ContextCompat.getColor(getActivity(), R.color.white), (int) (f * 1 * 0xff)));}}

工具方法：

/*** 修改颜色透明度* @param color* @param alpha* @return*/
public static int changeAlpha(int color, int alpha) {int red = Color.red(color);int green = Color.green(color);int blue = Color.blue(color);return Color.argb(alpha, red, green, blue);
}

实现效果:向上滑动渐变颜色，显示隐藏view

demo链接：https://download.csdn.net/download/meixi_android/10966003

附：左滑右滑手势

 //渐变色float x1 = 0;float x2 = 0;private int nowpersion = 0;@Overridepublic boolean dispatchTouchEvent(MotionEvent ev) {if (ev.getAction() == MotionEvent.ACTION_DOWN) {
//            Log.i("lgq","ssssMainActivity_dispatchTouchEvent==="+ev.getX());x1 = ev.getX();}return super.dispatchTouchEvent(ev);}@Overridepublic boolean onTouch(View v, MotionEvent event) {if (event.getAction() == MotionEvent.ACTION_MOVE) {x2 = event.getX();float h = x1 - x2;//            Log.i("lgq","eee==滑动距离aaa===="+(h)+"......"+nowpersion+"...."+x1);float f = (h + 0f) / 640;//滑动距离350pxif (f > 1) {f = 1f;}if (f < 0) {f = 0;}if (nowpersion == 0 && h < 0) {return false;} else if (nowpersion == 0 && h > 0) {if (f < 0.4) {return false;}TextView textView = tabLayout.getTabAt(1).getCustomView().findViewById(R.id.tab_iv);TextView textView0 = tabLayout.getTabAt(0).getCustomView().findViewById(R.id.tab_iv);textView.setTextColor(changeAlpha(ContextCompat.getColor(MainActivity.this, R.color.textlan), (int) (f * 1 * 0xff)));textView0.setTextColor(changeAlpha(ContextCompat.getColor(MainActivity.this, R.color.texthui), (int) (f * 1 * 0xff)));}}return false;}/*** 修改颜色透明度* @param color* @param alpha* @return*/public  int changeAlpha(int color, int alpha) {int red = Color.red(color);int green = Color.green(color);int blue = Color.blue(color);return Color.argb(alpha, red, green, blue);}

android 标题栏颜色渐变和阴影，ScrollView上下滑动监听，及判断scrollView是否滚动到底部相关推荐

ScrollView的滑动监听(以HorizontalScrollView为例)
ScrollView不能像其他组件一样使用onScrollChanged()方法是因为它用protected封装了 protected void onScrollChanged(int x, int ...
Android中自定义ScrollView的滑动监听事件，并在滑动时渐变标题栏背景颜色
效果图滑动前: 滑动中: 滑动到底部: 项目结构 ObservableScrollView package com.jukopro.titlebarcolor;import android.cont ...
android scrollview 滚动监听,Android开发之ScrollView的滑动监听
我们需要监听ScroView的滑动情况,比如滑动了多少距离,是否滑到布局的顶部或者底部.可惜的是SDK并没有相应的方法,不过倒是提供了一个 protected void onScrollChanged ...
android 监听webView滑动距离和标题栏颜色渐变
重写webView之 X5WebView import android.annotation.SuppressLint; import android.content.Context; import ...
Android开发之解决NestedScrollView滑动监听兼容低版本的方法
NestedScrollView的滑动监听目前仅限api23及以上,为了兼容低版本如下自定义方法可以自定义NestedScrollView即可如下: package cn.net.gfan.worl ...
Android监听左右滑删除通知,Android 滑动监听RecyclerView线性流+左右划删除+上下移动...
废话不多说了,直接给大家贴代码了.具体代码如下所示: xmlns:tools="http://schemas.android.com/tools" android:layout_w ...
Android RecyclerView（九）滑动监听综述
Android RecyclerView(九)滑动监听 1 RecyclerView 的滑动监听 1.1 RecyclerView 设置滑动监听 mRecyclerView.setOnScrollLi ...
android触摸滑动监听,Android 滑动监听的实例详解
Android 滑动监听的实例详解摘要: ScollBy,ScollTo是对内容的移动,view.ScollyBy是对view的内容的移动 view,ScollTo是对内容的移动(移动到指定位置), ...
android模拟点击滑动,模拟Android的view点击和滑动监听
一,简单形式的 /*模拟Android中的view 点击和滑动监听 * */ public class View { private OnClickListener onClickListener; ...

android 标题栏颜色渐变和阴影，ScrollView上下滑动监听，及判断scrollView是否滚动到底部

1、创建 ScrollListener 接口监听滑动距离

2、重写 ScrollView 自定义 ScrollListenerView

判断scrollView是否滚动到底部方法

3、在layout xml文件使用ScrollListenerView

4、Activity 实现滑动距离监听接口

实现效果:向上滑动渐变颜色，显示隐藏view

android 标题栏颜色渐变和阴影，ScrollView上下滑动监听，及判断scrollView是否滚动到底部相关推荐

最新文章

热门文章