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flowlayout's Introduction

Android Gems

FlowLayout

Android流式布局,支持单选、多选等,适合用于产品标签等。

##特色

  • 以setAdapter形式注入数据
  • 直接设置selector为background即可完成标签选则的切换,类似CheckBox
  • 支持控制选择的Tag数量,比如:单选、多选
  • 支持setOnTagClickListener,当点击某个Tag回调
  • 支持setOnSelectListener,当选择某个Tag后回调
  • 支持adapter.notifyDataChanged
  • Activity重建(或者旋转)后,选择的状态自动保存

##效果图

用法

dependencies {
 compile 'com.hyman:flowlayout-lib:1.1.2'
}

声明

布局文件中声明:

 <com.zhy.view.flowlayout.TagFlowLayout
        android:id="@+id/id_flowlayout"
        zhy:max_select="-1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="20dp">
    </com.zhy.view.flowlayout.TagFlowLayout>

支持属性:

max_select:-1为不限制选择数量,>=1的数字为控制选择tag的数量

支持通过state=checked来控制选中和取消,也可以自己在Adapter 的onSelected和unSelected中分别处理显示。

###设置数据

mFlowLayout.setAdapter(new TagAdapter<String>(mVals)
   {
       @Override
       public View getView(FlowLayout parent, int position, String s)
       {
           TextView tv = (TextView) mInflater.inflate(R.layout.tv,
                   mFlowLayout, false);
           tv.setText(s);
           return tv;
       }
   });

getView中回调,类似ListView等用法。

对于选中状态

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/tag_select_textcolor"
          android:drawable="@drawable/checked_bg"
          android:state_checked="true"></item>
    <item android:drawable="@drawable/normal_bg"></item>
</selector>

设置个background,上面一个状态为android:state_checked,另一个为正常。写写布局文件我都嫌慢,怎么能写一堆代码控制效果,设置改个效果,岂不是没时间dota了。

也可以不依赖state_checked,在下面的回调中自行设置:

#Adapter
@Override
public void onSelected(int position, View view) {
    super.onSelected(position, view);
}

@Override
public void unSelected(int position, View view) {
    super.unSelected(position, view);
}

###事件

mFlowLayout.setOnTagClickListener(new TagFlowLayout.OnTagClickListener()
{
  @Override
  public boolean onTagClick(View view, int position, FlowLayout parent)
  {
      Toast.makeText(getActivity(), mVals[position], Toast.LENGTH_SHORT).show();
      return true;
  }
});

点击标签时的回调。

mFlowLayout.setOnSelectListener(new TagFlowLayout.OnSelectListener()
{
  @Override
  public void onSelected(Set<Integer> selectPosSet)
  {
      getActivity().setTitle("choose:" + selectPosSet.toString());
  }
});

选择多个标签时的回调。

##预先设置Item选中

//预先设置选中
mAdapter.setSelectedList(1,3,5,7,8,9);
//获得所有选中的pos集合
flowLayout.getSelectedList();

flowlayout's People

Contributors

camnter avatar hongyangandroid avatar liaohuqiu avatar yansha87 avatar

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