StickLayout

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粘性控件，其任意一个子控件都可滑动停留，本质为NestedScrollView和LinearLayout的结合。

StickLayout 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# StickLayout [ ![Download](https://api.bintray.com/packages/wkp/maven/StickLayout/images/download.svg) ](https://bintray.com/wkp/maven/StickLayout/_latestVersion)
粘性控件，其任意一个子控件都可滑动停留，无论是View，还是ViewGroup；用该控件可以轻松实现支付宝"全部应用"界面。
## 演示图
![DragGridView](https://github.com/wkp111/StickLayout/blob/master/StickLayout.gif "演示图")
![DragGridView](https://github.com/wkp111/StickLayout/blob/master/StickLayout1.gif "演示图1")
![DragGridView](https://github.com/wkp111/StickLayout/blob/master/StickLayout2.gif "演示图2") 
Note：图1为设置属性wkp_canScrollToEndViewTop=true，图2没有；图3为设置滑动改变监听。
## Gradle集成
```groovy
dependencies{
 compile 'com.wkp:StickLayout:1.0.7'
 //Android Studio3.0+可用以下方式
 //implementation 'com.wkp:StickLayout:1.0.7'
}

//如不愿意等待，请加上我的maven仓库地址
maven { url "https://dl.bintray.com/wkp/maven" }
```
Note：可能存在Jcenter还在审核阶段，这时会集成失败！注意SDK版本targetSdkVersion >= 26.
## 使用详解
> 属性讲解
```xml
        
 <attr name="wkp_stick" format="boolean"/>
        
 <attr name="wkp_canScrollToEndViewTop" format="boolean"/>
```
Note：每个属性都有对应的java设置代码！
> 布局
```xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical">

<com.wkp.sticklayout_lib.widget.StickLayout
 android:id="@+id/sl"
 android:layout_width="match_parent"
 android:layout_height="wrap_content">

</LinearLayout>

</com.wkp.sticklayout_lib.widget.StickLayout>

</LinearLayout>

```
Note：ScrollView嵌套StickLayout时事件被拦截，无效果！StickLayout嵌套如ListView的条目控件时会只显示第一行，注意解决！
> 代码示例
```java
public class MainActivity extends AppCompatActivity {

private StickLayout mSl;
    private TextView mTv2;
    private View mTv3;
    private View mTv7;
    private View mTv4;
    private int currentPosition = -1;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSl = findViewById(R.id.sl);
        mTv2 = findViewById(R.id.tv2);
        mTv3 = findViewById(R.id.tv3);
        mTv4 = findViewById(R.id.tv4);
        mTv7 = findViewById(R.id.tv7);
//        mSl.setStickView(findViewById(R.id.tv2)); //设置粘性控件
//        mSl.setStickView(findViewById(R.id.tv3));
//        mSl.canScrollToEndViewTop(true);      //设置是否开启最后控件滑动到顶部
        //设置滑动改变监听（一滑动就会有回调）
        mSl.setOnScrollChangeListener(new StickLayout.OnScrollChangeListener() {
            @Override
            public void onScrollChange(StickLayout v, View currentView, int position, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
                //直到当前控件改变在做事情
                if (currentPosition != position) {
                    Toast.makeText(v.getContext(), ((TextView) currentView).getText().toString(), Toast.LENGTH_SHORT).show();
                    currentPosition = position;
                }
            }
        });
    }

public void addView(View view) {
        TextView textView = new TextView(view.getContext());
        textView.setGravity(Gravity.CENTER);
        textView.setPadding(10, 10, 10, 10);
        textView.setText("新条目");
        mSl.addView(textView, 0);
    }

public void scrollTo2(View view) {
        //滑动到指定子控件
        mSl.scrollToView(mTv2);
    }

public void scrollTo3(View view) {
        mSl.scrollToView(mTv3);
    }

public void scrollTo4(View view) {
        mSl.scrollToView(mTv4);
    }

public void scrollTo7(View view) {
 mSl.scrollToView(mTv7);
 }
}
```
Note：还有其他API请根据需要自行参考！ 
## 寄语
控件支持直接代码创建，还有更多API请观看<a href="https://github.com/wkp111/StickLayout/blob/master/sticklayout-lib/src/main/java/com/wkp/sticklayout_lib/widget/StickLayout.java">StickLayout.java</a>内的注释说明。 
欢迎大家使用，感觉好用请给个Star鼓励一下，谢谢！ 
大家如果有更好的意见或建议以及好的灵感，请邮箱作者，谢谢！ 
QQ邮箱：1535514884@qq.com 
163邮箱：15889686524@163.com 
Gmail邮箱：wkp15889686524@gmail.com

## 版本更新
* v1.0.7 
修复crash：当所有子控件均未设置wkp_stick属性时，使用pair导致空指针。 
* v1.0.6 
修复悬停控件高度设置wrap_content时无高度BUG。 
* v1.0.5 
修复悬停子控件在悬停时触发onLayout方法导致的悬停子控件消失的BUG。 
感谢<a href="https://github.com/Zero-Crazy">Zero-Crazy</a>的使用反馈。 
* v1.0.4 
新增滑动改变监听，主要为解决滑动过程中做一些联动操作 
* v1.0.3 
新增滑动到指定子控件API 
* v1.0.1 
新创建子可粘性停留控件库
## License

Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

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