# StickyDecoration

**Repository Path**: ouyangpengdev/StickyDecoration

## Basic Information

- **Project Name**: StickyDecoration
- **Description**: No description available
- **Primary Language**: Java
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-03-23
- **Last Updated**: 2021-03-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# StickyDecoration
利用`RecyclerView.ItemDecoration`实现顶部悬浮效果

![效果](http://upload-images.jianshu.io/upload_images/1638147-89986d7141741cdf.gif?imageMogr2/auto-orient/strip)

## 添加依赖
项目要求： `minSdkVersion` >= 14.
在你的`build.gradle`中 :
```gradle
repositories {
    jcenter()// If not already there
}
dependencies {
    compile 'com.gavin.com.library:stickyDecoration:1.0.2'
}
```

## 使用

- `StickyDecoration`——文字悬浮
```java
//回调
GroupListener groupListener = new GroupListener() {
    @Override
    public String getGroupName(int position) {
        //根据position获取对应的组名称
        return dataList.get(position).getProvince();
    }
};
//创建StickyDecoration，实现悬浮栏
StickyDecoration decoration = StickyDecoration.Builder
        .init(groupListener)
        .setGroupBackground(Color.parseColor("#48BDFF"))    //背景色
        .setGroupHeight(DensityUtil.dip2px(this, 35))       //高度
        .setGroupTextColor(Color.WHITE)                     //字体颜色
        .setGroupTextSize(DensityUtil.sp2px(this, 15))      //字体大小
        .setTextLeftMargin(DensityUtil.dip2px(this, 10))    //左边距
        .build();
...
mRecyclerView.addItemDecoration(decoration);
```
效果：

![效果](http://upload-images.jianshu.io/upload_images/1638147-f3c2cbe712aa65fb.gif?imageMogr2/auto-orient/strip)



- `PowerfulStickyDecoration`——自定义`View`悬浮

先创建布局`item_group`
```xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:background="@color/colorAccent"
              android:gravity="center_vertical"
              android:id="@+id/ll"
              android:orientation="horizontal">

    <ImageView
        android:id="@+id/iv"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_marginLeft="10dp"
        android:src="@mipmap/ic_launcher"/>

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textColor="@android:color/white"/>
</LinearLayout>
```
创建`PowerfulStickyDecoration`，实现自定`View`悬浮
```java
PowerGroupListener listener = new PowerGroupListener() {
    @Override
    public String getGroupName(int position) {
        return dataList.get(position).getProvince();
    }

    @Override
    public View getGroupView(int position) {
        //获取自定定义的组View
        View view = getLayoutInflater().inflate(R.layout.item_group, null, false);
        ((TextView) view.findViewById(R.id.tv)).setText(dataList.get(position).getProvince());
        return view;
    }
};
PowerfulStickyDecoration decoration = PowerfulStickyDecoration.Builder
        .init(listener)
        .setGroupHeight(DensityUtil.dip2px(this, 40))   //设置高度
        .build();

  ...
mRecyclerView.addItemDecoration(decoration);
```
效果：

![效果](http://upload-images.jianshu.io/upload_images/1638147-3fed255296a6c3db.gif?imageMogr2/auto-orient/strip)