Android GridLayout具有每行动态列数 [英] Android GridLayout with dynamic number of columns per row

问题描述

我有不同宽度的卡片，我想创建一个Grid Layout，其中width =匹配父对象(填充屏幕)和固定高度. 我想在Grid布局中设置卡片，以使列数根据适合行的元素的宽度而变化.

I have cards with different width and I would like to create a Grid Layout where width = match the parent (filling the screen) and fixed height. I would like to set the cards in the Grid layout so the number of columns changes accordingly to the width of the elements that can fit the row.

因此，元素将被设置为水平行，直到它们适合屏幕为止，然后在超过固定高度时以垂直滚动的方式转到下一行.

So the elements will be set in a horizontal row till they can fit the screen and then go to the next row, with a vertical scroll when they exceed the fixed height.

我正在尝试使用网格布局"，但我不知道它是否适合此解决方案. 我使用的是原生Android .

I am trying to use a Grid Layout but I don't know if it the suitable solution for this. I use native Android.

这里的图片看起来应该像这样:

Here a picture of it should look like:

谢谢.

推荐答案

您可以使用

You can use FlexboxLayoutManager

在您的build.gradle文件中添加以下依赖项:

Add the following dependency to your build.gradle file:

implementation 'com.google.android:flexbox:0.3.2'

示例代码

LAYOUT.XML

LAYOUT.XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <android.support.v7.widget.RecyclerView
      android:id="@+id/recyclerView"
      android:layout_width="match_parent"
      android:layout_height="250dp" />



</LinearLayout>

活动代码

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;

import com.google.android.flexbox.FlexDirection;
import com.google.android.flexbox.FlexboxLayoutManager;
import com.google.android.flexbox.JustifyContent;

import java.util.ArrayList;


public class MainActivity extends AppCompatActivity {

    RecyclerView recyclerView;
    ArrayList<String> arrayList = new ArrayList<>();
    DataAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = findViewById(R.id.recyclerView);
        initArray();
        FlexboxLayoutManager layoutManager = new FlexboxLayoutManager(this);
        layoutManager.setFlexDirection(FlexDirection.COLUMN);
        layoutManager.setJustifyContent(JustifyContent.FLEX_END);
        recyclerView.setLayoutManager(layoutManager);
        adapter = new DataAdapter(this, arrayList);
        recyclerView.setAdapter(adapter);

    }

    private void initArray() {

        arrayList.add("ioreeoe");
        arrayList.add("fghfgh");
        arrayList.add("ftyjyjhghgh");
        arrayList.add("jfgewrg");
        arrayList.add("rwrewr");
        arrayList.add("ghyjtyfghh");
        arrayList.add("gfhfgh");
        arrayList.add("gfhfht");
        arrayList.add("retretret");
        arrayList.add("retret");
        arrayList.add("ioreeoe");
        arrayList.add("fghfgh");
        arrayList.add("ftyjyjhghgh");
        arrayList.add("jfgewrg");
        arrayList.add("rwrewr");
        arrayList.add("ghyjtyfghh");
        arrayList.add("gfhfgh");
        arrayList.add("gfhfht");
        arrayList.add("retretret");
        arrayList.add("retret");
        arrayList.add("ioreeoe");
        arrayList.add("fghfgh");
        arrayList.add("ftyjyjhghgh");
        arrayList.add("jfgewrg");
        arrayList.add("rwrewr");
        arrayList.add("ghyjtyfghh");
        arrayList.add("gfhfgh");
        arrayList.add("gfhfht");
        arrayList.add("retretret");
        arrayList.add("retret");
    }

}

适配器代码

Adapter code

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;

/**
 * Created by nilesh on 3/4/18.
 */

public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {

    Context context;
    ArrayList<String> arrayList = new ArrayList<>();

    public DataAdapter(Context context, ArrayList<String> arrayList) {
        this.context = context;
        this.arrayList = arrayList;
    }

    @Override
    public DataAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.custom_layout, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(DataAdapter.ViewHolder holder, int position) {

        holder.title.setText(arrayList.get(position));
    }

    @Override
    public int getItemCount() {
        return arrayList.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        TextView title;

        public ViewHolder(View itemView) {
            super(itemView);
            title = itemView.findViewById(R.id.nilu);
        }
    }
}

custom_layout.xml

custom_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/nilu"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:background="@drawable/test"
        android:padding="10dp"
        android:textColor="#050505" />
</LinearLayout>

@ drawable/test

@drawable/test

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle"  >
            <corners android:radius="30dp"/>
            <solid android:color="#d10e0e"/>
            <stroke android:width="1dip" android:color="#070fe9" />
        </shape>
    </item>
</selector>

结果

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