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

问题描述

我有不同宽度的卡片，我想创建一个网格布局，其中宽度 = 匹配父级(填充屏幕)和固定高度.我想在网格布局中设置卡片，以便列数根据可以适合行的元素的宽度而变化.

所以元素将被设置在水平行中，直到它们适合屏幕，然后转到下一行，当它们超过固定高度时垂直滚动.

我正在尝试使用网格布局，但我不知道它是否适合于此.我使用原生 Android.

这里的图片应该是这样的:

谢谢.

解决方案

你可以使用

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.

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.

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

Here a picture of it should look like:

Thanks.

解决方案

You can use FlexboxLayoutManager

Add the following dependency to your build.gradle file:

implementation 'com.google.android:flexbox:1.0.0'

SAMPLE CODE

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>

ACTIVTY CODE

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");
    }

}

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

<?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

<?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>

RESULT

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