CustomFiltControl一个用作筛选的弹窗控件

2018-04-04 本文已影响0人 Ze权

效果：

device-2018-04-04-141614.png

起初踩的坑：

刚开始是因为项目中需要用到筛选的功能，以前也遇到过但都是其他同事做的，而我看他们的实现大多都是自己一个个的码布局，然后做事件处理很麻烦，还有的是通过网上的一些线性排列控件自己组合实现的。

如今自己遇到了我开始想的也是通过LinearLayout动态去添加选项，title部分就是也是动态添加，一个打的LinearLayout包两个小的，然后在小的里面又包很多选项，但是遇到要换行的时候又需要添加一个LinearLayout，也就是但是有个问题，布局繁琐，得不到很好的复用。

后面突然想到了GridLayout，然后又使用了LinearLayout+GridLayout，对GridLayout是可以避免在你换行的时候去计算，只要你设置好行列，它会自动换行，这是确实实现了上面的效果，但是博主写好了又发现不够完美，既然GridLayout能自动换行，又可以一个站多行多列，为什么不把title也放到GridLayout中呢，有了这个想法，又来修改，在计算行列的时候确实遇到了阻碍，不过终究是完成了，最后封装在了popuwindow中直接调用。

看看主要实现吧：
package com.zzq.mack.customfiltcontrol;

import android.content.Context;
import android.graphics.Color;
import android.support.v7.widget.GridLayout;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.Toast;

import com.zzq.mack.customfiltcontrol.model.FiltModel;

import java.util.List;

/**

Author:xqt
Email:zzq1573@gmail.com
Date:2018/3/31 0031 11:24
Description:筛选弹框版权所有转载请注明出处
*/
public class FiltPopuWindow extends PopupWindow{
public FiltPopuWindow(Context context,View view){
//这里可以修改popupwindow的宽高
super(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
setContentView(view);
initViews();
}
private void initViews() {
setAnimationStyle(R.style.popwin_anim_style);
//setBackgroundDrawable(new ColorDrawable(0x00000000));
setFocusable(true);
setOutsideTouchable(true);
}

public static class Builder {
    private Context context;
    private List<FiltModel> listData;
    private int columnCount;
    private GridLayout rootGridLayout;
    private LinearLayout contextll;
    //背景颜色
    private int colorBg = Color.parseColor("#F8F8F8");
    private int titleTextSize = 14;//SP
    private int tabTextSize = 14;//SP
    private int titleTextColor = Color.parseColor("#333333");//标题字体颜色
    private int tabTextColor = R.color.fit_item_textcolor;//选项字体颜色
    private int tabBgDrawable = R.drawable.item_lable_bg_shape;//选项背景颜色
    //当前加载的行数
    private int row = -1;
    private FiltPopuWindow mFiltPopuWindow;

    public Builder(Context context) {
        this.context = context;
    }
    /**
     * 设置数据源
     * @return
     */
    public Builder setDataSource(List<FiltModel> listData) {
        this.listData = listData;
        return this;
    }

    public Builder setColumnCount(int columnCount){
        this.columnCount = columnCount;
        return this;
    }

    public Builder setColorBg(int color){
        colorBg = context.getResources().getColor(color);
        return this;
    }

    public Builder setTitleTextSize(int titleTextSize) {
        this.titleTextSize = titleTextSize;
        return this;
    }

    public Builder setTabTextSize(int tabTextSize) {
        this.tabTextSize = tabTextSize;
        return this;
    }

    public Builder setTitleTextColor(int titleTextColor) {
        this.titleTextColor = titleTextColor;
        return this;
    }

    public Builder setTabTextColor(int tabTextColor) {
        this.tabTextColor = tabTextColor;
        return this;
    }

    public Builder setTabBgDrawable(int tabBgDrawable) {
        this.tabBgDrawable = tabBgDrawable;
        return this;
    }

    public Builder build(){
        newItemLayout(getRowCount(),columnCount);
        for (int i = 0; i < listData.size(); i++){
            ++row;
            TextView view = new TextView(context);
            view.setText(listData.get(i).getTypeName());
            view.setTextColor(titleTextColor);
            view.setTextSize(titleTextSize);
            //配置列 第一个参数是起始列标 第二个参数是占几列 title（筛选类型）应该占满整行，so -> 总列数
            GridLayout.Spec columnSpec = GridLayout.spec(0,columnCount);
            //配置行 第一个参数是起始行标  起始行+起始列就是一个确定的位置
            GridLayout.Spec rowSpec = GridLayout.spec(row);
            //将Spec传入GridLayout.LayoutParams并设置宽高为0或者WRAP_CONTENT，必须设置宽高，否则视图异常
            GridLayout.LayoutParams lp = new GridLayout.LayoutParams(rowSpec, columnSpec);
            lp.width = GridLayout.LayoutParams.WRAP_CONTENT;
            lp.height = GridLayout.LayoutParams.WRAP_CONTENT;
            lp.setGravity(Gravity.LEFT | Gravity.CENTER_VERTICAL);
            lp.bottomMargin = context.getResources().getDimensionPixelSize(R.dimen.dp_8);
            rootGridLayout.addView(view,lp);
            //添加选项
            addTabs(listData.get(i),i);
        }

        return this;
    }

    private void newItemLayout(int rowCount,int columnCount){
        contextll = new LinearLayout(context);
        contextll.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
        contextll.setBackgroundColor(context.getResources().getColor(R.color.color_33000000));
        contextll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mFiltPopuWindow != null){
                    mFiltPopuWindow.dismiss();
                    //点击外部消失
                }
            }
        });
        rootGridLayout = new GridLayout(context);
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        rootGridLayout.setOrientation(GridLayout.HORIZONTAL);
        rootGridLayout.setRowCount(rowCount);
        rootGridLayout.setColumnCount(columnCount);
        rootGridLayout.setBackgroundColor(colorBg);
        rootGridLayout.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                return true;
            }
        });
        int pandd = context.getResources().getDimensionPixelSize(R.dimen.dp_10);
        lp.weight = 1;
        rootGridLayout.setPadding(pandd,pandd,pandd,pandd);
        contextll.addView(rootGridLayout,lp);
    }

    /**
     * 添加选项
     * @param model
     */
    private void addTabs(final FiltModel model, final int titleIndex){
        List<FiltModel.TableMode> tabs = model.getTabs();
        for (int i = 0; i < tabs.size(); i++){
            if (i % columnCount == 0){
                row ++;
            }
            final FiltModel.TableMode tab = tabs.get(i);
            final TextView lable = new TextView(context);
            lable.setTextColor(context.getResources().getColorStateList(tabTextColor));
            lable.setBackgroundDrawable(context.getResources().getDrawable(tabBgDrawable));
            lable.setSingleLine(true);
            lable.setGravity(Gravity.CENTER);
            lable.setEllipsize(TextUtils.TruncateAt.MIDDLE);
            //这里可以自行修改tab框框的大小
            int panddT = context.getResources().getDimensionPixelSize(R.dimen.dp_2);
            int panddL = context.getResources().getDimensionPixelSize(R.dimen.dp_8);
            lable.setPadding(panddL,panddT,panddL,panddT);
            lable.setTextSize(tabTextSize);
            rootGridLayout.addView(lable,getItemLayoutParams(i,row));
            lable.setText(tab.name);
            if (tabs.get(i) == model.getTab()){
                lable.setSelected(true);
            }
            lable.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //lable.setSelected(true);
                    if (tab != model.getTab()){
                        //清空上次选中
                        rootGridLayout.getChildAt(getIndex(model,titleIndex)).setSelected(false);
                        //设置当前选中
                        model.setTab(tab);
                        lable.setSelected(true);
                    }
                }
            });
        }
    }

    private GridLayout.LayoutParams getItemLayoutParams(int i,int row){
        //使用Spec定义子控件的位置和比重
        GridLayout.Spec rowSpec = GridLayout.spec(row,1f);
        GridLayout.Spec columnSpec = GridLayout.spec(i%columnCount,1f);
        //将Spec传入GridLayout.LayoutParams并设置宽高为0，必须设置宽高，否则视图异常
        GridLayout.LayoutParams lp = new GridLayout.LayoutParams(rowSpec, columnSpec);
        lp.width = 0;
        lp.height = GridLayout.LayoutParams.WRAP_CONTENT;
        lp.bottomMargin = context.getResources().getDimensionPixelSize(R.dimen.dp_8);
        if(i % columnCount == 0) {//最左边
            lp.leftMargin = context.getResources().getDimensionPixelSize(R.dimen.dp_10);
            lp.rightMargin = context.getResources().getDimensionPixelSize(R.dimen.dp_20);
        }else if((i + 1) % columnCount == 0){//最右边
            lp.rightMargin = context.getResources().getDimensionPixelSize(R.dimen.dp_10);
        }else {//中间
            lp.rightMargin = context.getResources().getDimensionPixelSize(R.dimen.dp_20);
        }
        return lp;
    }

    /**
     * 获取当前选中tab的 在整个GridLayout的索引
     * @return
     */
    private int getIndex(FiltModel model,int titleIndex){
        int index = 0;
        for (int i = 0; i < titleIndex; i++){
            //计算当前类型之前的元素所占的个数 title算一个
            index += listData.get(i).getTabs().size() + 1;
        }
        //加上当前 title下的索引
        FiltModel.TableMode tableModel = model.getTab();
        index += model.getTabs().indexOf(tableModel) + 1;
        return index;
    }

    /**
     * 计算行数
     * @return
     */
    private int getRowCount(){
        int row = 0;
        for (FiltModel model : listData){
            //计算当前类型之前的元素所占的个数 title算一个
            row ++;
            int size = model.getTabs().size();
            row += (size / columnCount) + (size % columnCount > 0 ? 1 : 0) ;
        }
        return row;
    }
    public FiltPopuWindow createPop(){
        if (listData == null || listData.size() == 0){
            try {
                throw new Exception("没有筛选条件");
            } catch (Exception e) {
                Toast.makeText(context,e.getMessage(),Toast.LENGTH_SHORT).show();
                e.printStackTrace();
            }
            return null;
        }
        mFiltPopuWindow = new FiltPopuWindow(context,contextll);
        return mFiltPopuWindow;
    }

}

}

通过设置columnCount的大小可以改变列数，测试2，3，4，5没问题，只是列数越多就越挤，这是必然的。

希望对你有帮助，有问题欢迎给我留言。

这里准备了一个demo作为参考

GitHub:CutomFiltControl

CustomFiltControl一个用作筛选的弹窗控件

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