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Android自定義ViewGroup實(shí)現(xiàn)朋友圈九宮格控件

 更新時(shí)間：2021年07月13日 12:30:40   作者：chenyangqi  
在我們的實(shí)際應(yīng)用中,經(jīng)常需要用到自定義控件,比如自定義圓形頭像，自定義計(jì)步器等等,這篇文章主要給大家介紹了關(guān)于Android自定義ViewGroup實(shí)現(xiàn)朋友圈九宮格控件的相關(guān)資料,需要的朋友可以參考下

一、簡(jiǎn)介

最近項(xiàng)目里有個(gè)類似微信朋友圈的九圖控件的需求，Github找了一下，發(fā)現(xiàn)都不太滿足需求，我需要單張圖片的時(shí)候可以按照?qǐng)D片寬高比列在一定范圍內(nèi)自適應(yīng)，而大多開源項(xiàng)目單張圖片也是一個(gè)小正方形，所以，干脆自己動(dòng)手寫一個(gè)

1.1、效果圖如下

1.2、主要功能如下

1：?jiǎn)螐垐D片的時(shí)候支持按照?qǐng)D片寬高比列在設(shè)定區(qū)域內(nèi)自適應(yīng)

2：Adapter方式綁定數(shù)據(jù)和UI

3：圖片點(diǎn)擊事件回調(diào)

4：設(shè)置圖片間隔大小

5：自由通過Glide設(shè)置ImageView圓角效果

二、使用

2.1、自定義屬性如下

<resources>
    <declare-styleable name="NineImageLayout">
        <!-- 控件寬高 -->
        <attr name="nine_layoutWidth" format="dimension"/>
        <!-- 單張圖片時(shí)的最大寬高范圍-->
        <attr name="nine_singleImageWidth" format="dimension" />
        <!-- 圖片之間間隙大小 -->
        <attr name="nine_imageGap" format="dimension" />
    </declare-styleable>
</resources>

2.2、布局中使用自定義NineImageLayout

 <com.cyq.customview.nineLayout.view.NineImageLayout
        android:id="@+id/nine_image_layout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv_title"
        android:layout_marginTop="20dp"
        app:nine_imageGap="4dp"
        app:nine_layoutWidth="300dp"
        app:nine_singleImageWidth="180dp" />

2.3、Adapter方式綁定數(shù)據(jù)和UI

其中Glide.asBitmap是為了計(jì)算圖片寬高，如果后臺(tái)有返回圖片的寬高可以省略這一步，直接setSingleImage(width, height,imageView)，

Ps:如果可以建議后臺(tái)返回圖片寬高，這樣可以避免單張圖片的時(shí)候控件高度跳屏，比如我限制單張圖片寬高在200dp范圍，要展示寬1000px高500px的時(shí)候，在圖片未加載完成時(shí)控件寬高為200dp，圖片加載完成后高度變?yōu)?00dp，會(huì)有一個(gè)不好的用戶體驗(yàn)，所以建議上傳圖片的時(shí)候記錄圖片寬高信息

nineImageLayout.setAdapter(new NineImageAdapter() {
            @Override
            protected int getItemCount() {
                return mData.size();
            }

            @Override
            protected View createView(LayoutInflater inflater, ViewGroup parent, int i) {
                return inflater.inflate(R.layout.item_img_layout, parent, false);
            }

            @Override
            protected void bindView(View view, final int i) {
                final ImageView imageView = view.findViewById(R.id.iv_img);
                Glide.with(mContext).load(mData.get(i)).into(imageView);
                if (mData.size() == 1) {
                    Glide.with(mContext)
                            .asBitmap()
                            .load(mData.get(0))
                            .into(new SimpleTarget<Bitmap>() {
                                @Override
                                public void onResourceReady(Bitmap bitmap, Transition<? super Bitmap> transition) {
                                    final int width = bitmap.getWidth();
                                    final int height = bitmap.getHeight();
                                    nineImageLayout.setSingleImage(width, height,imageView);
                                }
                            });
                    Glide.with(mContext).load(mData.get(0)).into(imageView);
                } else {
                    Glide.with(mContext).load(mData.get(i)).into(imageView);
                }
            }

            @Override
            public void OnItemClick(int i, View view) {
                super.OnItemClick(position, view);
                Toast.makeText(mContext, "position:" + mData.get(i), Toast.LENGTH_SHORT).show();
            }
        });

2.4、列表里面使用

頁(yè)面放一個(gè)RecyclerView

<FrameLayout 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"
    tools:context=".nineLayout.NineImageLayoutActivity">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</FrameLayout>

item布局如下

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="20dp">

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="標(biāo)題"
        android:textColor="@android:color/black"
        android:textSize="18sp" />

    <com.cyq.customview.nineLayout.view.NineImageLayout
        android:id="@+id/nine_image_layout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv_title"
        android:layout_marginTop="20dp"
        app:nine_imageGap="4dp"
        app:nine_layoutWidth="300dp"
        app:nine_singleImageWidth="180dp" />
</RelativeLayout>

Activity中構(gòu)造一下測(cè)試數(shù)據(jù)，大致代碼如下

public class NineImageLayoutActivity extends AppCompatActivity {
    private RecyclerView mRecyclerView;
    private MyAdapter mAdapter;
    private Random random;
    private final String URL_IMG = "http://q3x62hkt1.bkt.clouddn.com/banner/58f57dfa5bb73.jpg";
    private final String URL_IMG_2 = "http://q3x62hkt1.bkt.clouddn.com/timg.jpeg";
    private List<List<String>> mList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_nine_image_layout);
        random = new Random();
        List<String> testList = new ArrayList<>();
        testList.add(URL_IMG_2);
        for (int i = 0; i < 100; i++) {
            int count = i % 9 + 1;
            List<String> list = new ArrayList<>();
            for (int j = 0; j < count; j++) {
                list.add(URL_IMG);
            }
            if (i % 8 == 0) {
                mList.add(testList);
            }
            mList.add(list);
        }
        mRecyclerView = findViewById(R.id.recyclerview);
        mAdapter = new MyAdapter(mList, this);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        mRecyclerView.setAdapter(mAdapter);
    }
}

MyAdapter中設(shè)置數(shù)據(jù)

import java.util.List;

/**
 * @author : ChenYangQi
 * date   : 2020/1/16 13:49
 * desc   :
 */
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
    private List<List<String>> mList;
    private Context mContext;

    public MyAdapter(List<List<String>> mList, Context mContext) {
        this.mList = mList;
        this.mContext = mContext;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(mContext).inflate(R.layout.item_nine_img_layout_list, parent, false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull final MyViewHolder holder, final int position) {
        final List<String> mData = mList.get(position);
        holder.tvTitle.setText("這是" + mData.size() + "張圖片的標(biāo)題");
        final NineImageLayout nineImageLayout = holder.nineImageLayout;
        holder.nineImageLayout.setAdapter(new NineImageAdapter() {
            @Override
            protected int getItemCount() {
                return mData.size();
            }

            @Override
            protected View createView(LayoutInflater inflater, ViewGroup parent, int i) {
                return inflater.inflate(R.layout.item_img_layout, parent, false);
            }

            @Override
            protected void bindView(View view, final int i) {
                final ImageView imageView = view.findViewById(R.id.iv_img);
                Glide.with(mContext).load(mData.get(i)).into(imageView);
                if (mData.size() == 1) {
                    Glide.with(mContext)
                            .asBitmap()
                            .load(mData.get(0))
                            .into(new SimpleTarget<Bitmap>() {
                                @Override
                                public void onResourceReady(Bitmap bitmap, Transition<? super Bitmap> transition) {
                                    final int width = bitmap.getWidth();
                                    final int height = bitmap.getHeight();
                                    nineImageLayout.setSingleImage(width, height,imageView);
                                }
                            });
                    Glide.with(mContext).load(mData.get(0)).into(imageView);
                } else {
                    Glide.with(mContext).load(mData.get(i)).into(imageView);
                }
            }

            @Override
            public void OnItemClick(int i, View view) {
                super.OnItemClick(position, view);
                Toast.makeText(mContext, "position:" + mData.get(i), Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public int getItemCount() {
        return mList.size();
    }
 
    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView tvTitle;
        NineImageLayout nineImageLayout;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            tvTitle = itemView.findViewById(R.id.tv_title);
            nineImageLayout = itemView.findViewById(R.id.nine_image_layout);
        }
    }
}

三、源碼地址

具體自定義NineImageLayout過程，可以查看NineImageLayout

四、總結(jié)

到此這篇關(guān)于Android自定義ViewGroup實(shí)現(xiàn)朋友圈九宮格控件的文章就介紹到這了,更多相關(guān)Android朋友圈九宮格控件內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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