微信分享，網絡圖片url轉Bitmap

時間 2020-04-17

原文原文鏈接

先看一下效果圖 java

1.產品需求說明：商品分享

因此在進入商品詳情頁，請求後端，獲取分享的內容（包括：標題，描述，圖片，連接）android

GoodDetailActivity相關部分代碼以下：web

public class GoodDetailActivity extends BaseActivity<GoodsViewModel, ActivityGoodsDetailBinding> {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_goods_detail);
        getShareByGoodId();
    }
    
        private ShareResult shareResult;
    /**
     * 分享
     */
    private void getShareByGoodId(){
        viewModel.getShareByGoodId(goods_id).observe(this, shareResult -> {
            if (shareResult != null){
                this.shareResult = shareResult;
                getImgBitmap();
            }
        });
    }
    
    /**
    * 關鍵點！！！
    * 網絡圖片url轉Bitmap
    */
    private void getImgBitmap(){
        Glide.with(this).asBitmap().load(shareResult.getShare_image()).into(new SimpleTarget<Bitmap>() {

            @Override
            public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                //2
                Bitmap thumbBmp = null;
                if (resource.getHeight()>100 && resource.getWidth()>100) {
                    thumbBmp = Bitmap.createScaledBitmap(resource, 100, 100, true);
                }else {
                    thumbBmp = resource;
                }
                if (thumbBmp != null) {
                    shareResult.setBitmap(thumbBmp);
//                    dismissLoading();
//                    DialogUtils.shareDailog(mContext, url, "標題", "內容", thumbBmp);
                } else {
//                    dismissLoading();
//                    ToastUtils.showShort("獲取分享圖片失敗");
                }
            }
        });
    }

    /**
    *點擊分享按鈕
    */
    public void onClickShare(View view){
        if (shareResult == null){
            getShareByGoodId();
            return;
        }
        toShare();
    }

    private void toShare(){
        String url = shareResult.getShare_image();
        if (shareResult.getShare_link() != null && !"".equals(shareResult.getShare_link()) ){
            url = shareResult.getShare_link();
        }
        WXShareUtil.wxShare(this, url, shareResult.getShare_title(),
                shareResult.getShare_description(), false, shareResult.getBitmap());
    }
}
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分享返回類ShareResult代碼：後端

public class ShareResult {
    /**
     * "share_title": null,
     *     "share_description": null,
     *     "share_image": "http://.....com",
     *     "share_link": ""
     */

    private String share_title;
    private String share_description;
    private String share_image;
    private String share_link;
    private Bitmap bitmap;

    public Bitmap getBitmap() {
        return bitmap;
    }

    public void setBitmap(Bitmap bitmap) {
        this.bitmap = bitmap;
    }

    public String getShare_title() {
        return share_title;
    }

    public void setShare_title(String share_title) {
        this.share_title = share_title;
    }

    public String getShare_description() {
        return share_description;
    }

    public void setShare_description(String share_description) {
        this.share_description = share_description;
    }

    public String getShare_image() {
        return share_image;
    }

    public void setShare_image(String share_image) {
        this.share_image = share_image;
    }

    public String getShare_link() {
        return share_link;
    }

    public void setShare_link(String share_link) {
        this.share_link = share_link;
    }
}
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微信分享工具類WXShareUtil代碼：api

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Rect;
import com.example.jingbin.zkfudou.R;
import com.tencent.mm.opensdk.modelmsg.SendMessageToWX;
import com.tencent.mm.opensdk.modelmsg.WXImageObject;
import com.tencent.mm.opensdk.modelmsg.WXMediaMessage;
import com.tencent.mm.opensdk.modelmsg.WXMusicObject;
import com.tencent.mm.opensdk.modelmsg.WXTextObject;
import com.tencent.mm.opensdk.modelmsg.WXVideoObject;
import com.tencent.mm.opensdk.modelmsg.WXWebpageObject;
import com.tencent.mm.opensdk.openapi.IWXAPI;
import com.tencent.mm.opensdk.openapi.WXAPIFactory;
import java.io.ByteArrayOutputStream;

public class WXShareUtil {
    private static IWXAPI api;

    /**
     * 微信文字分享
     * @param text 分享內容
     * @param context
     */
    public static void WXTextShare(String text, Context context){
        //初始化一個WXTextObject對象，填寫分享的文本內容
        WXTextObject textObject = new WXTextObject();
        textObject.text = text;

        //用WXTextObject對象初始化一個WXMediaMessage對象
        WXMediaMessage msg = new WXMediaMessage();
        msg.mediaObject = textObject;
        msg.description = text;

        //構造一個Req
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
        //分享到朋友圈：req.scene = SendMessageToWX.Req.WXSceneTimeline;
        //分享到好友會話：req.scene = SendMessageToWX.Req.WXSceneSession;
        //添加到微信收藏：req.scene = SendMessageToWX.Req.WXSceneFavorite;

        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(context, Constant.WEIXIN_APP_ID);
        }
        api.sendReq(req);
    }

    /**
     * 微信分享圖片
     * @param resId 圖片資源id
     * @param context
     */
    public static void WXBitmapShare(int resId, Context context){
        Bitmap bmp = BitmapFactory.decodeResource(context.getResources(),resId);

        //初始化一個WXImageObject對象和WXMediaMessage對象
        WXImageObject imgObj = new WXImageObject(bmp);
        WXMediaMessage msg = new WXMediaMessage();
        msg.mediaObject = imgObj;

        //設置縮略圖
        Bitmap thumbBmp = Bitmap.createScaledBitmap(bmp,100,100,true);
        bmp.recycle();
//        msg.thumbData = ConvertUtil.ConvertBitmapToBytes(thumbBmp,true);
        msg.thumbData = Util.bmpToByteArray(thumbBmp,true);

        //構造一個Req
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.transaction = buildTransaction("img");//transaction字段用於惟一標識一個請求
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
        //分享到朋友圈：req.scene = SendMessageToWX.Req.WXSceneTimeline;
        //分享到好友會話：req.scene = SendMessageToWX.Req.WXSceneSession;
        //添加到微信收藏：req.scene = SendMessageToWX.Req.WXSceneFavorite;

        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(context, Constant.WEIXIN_APP_ID);
        }
        api.sendReq(req);
    }

    /**
     * 微信分享圖片
     * @param bitmap 圖片
     * @param context
     */
    public static void WXBitmapShare(Bitmap bitmap, Context context){
        //初始化一個WXImageObject對象和WXMediaMessage對象
        WXImageObject imgObj = new WXImageObject(bitmap);
        WXMediaMessage msg = new WXMediaMessage();
        msg.mediaObject = imgObj;

        //設置縮略圖
        Bitmap thumbBmp = Bitmap.createScaledBitmap(bitmap,100,100,true);
        bitmap.recycle();
//        msg.thumbData = ConvertUtil.ConvertBitmapToBytes(thumbBmp,true);
        msg.thumbData = Util.bmpToByteArray(thumbBmp,true);
        //構造一個Req
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.transaction = buildTransaction("img");//transaction字段用於惟一標識一個請求
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
        //分享到朋友圈：req.scene = SendMessageToWX.Req.WXSceneTimeline;
        //分享到好友會話：req.scene = SendMessageToWX.Req.WXSceneSession;
        //添加到微信收藏：req.scene = SendMessageToWX.Req.WXSceneFavorite;

        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(context, Constant.WEIXIN_APP_ID);
        }
        api.sendReq(req);
    }

    private static String buildTransaction(String img) {
        return System.currentTimeMillis()+img;
    }

    /**
     * 微信分享音樂
     * @param musicUrl
     * @param context
     */
    public static void WXMusicShare(String musicUrl, Context context){
        //初始化一個WXMusicObject對象,填寫url
        WXMusicObject music = new WXMusicObject();
        music.musicUrl = musicUrl;
        //用WXMusicObject初始化一個WXMediaMessage對象,填寫標題、描述
        WXMediaMessage msg = new WXMediaMessage();
        msg.mediaObject = music;
        msg.title = "音樂標題";
        msg.description = "音樂描述";
        //設置縮略圖
        Bitmap thumbBmp = BitmapFactory.decodeResource(context.getResources(), R.mipmap.icon_head_default);
//        msg.thumbData = ConvertUtil.ConvertBitmapToBytes(thumbBmp,true);
        msg.thumbData = Util.bmpToByteArray(thumbBmp,true);

        //構造一個Req
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.transaction = buildTransaction("music");//transaction字段用於惟一標識一個請求
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
        //分享到朋友圈：req.scene = SendMessageToWX.Req.WXSceneTimeline;
        //分享到好友會話：req.scene = SendMessageToWX.Req.WXSceneSession;
        //添加到微信收藏：req.scene = SendMessageToWX.Req.WXSceneFavorite;

        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(context, Constant.WEIXIN_APP_ID);
        }
        api.sendReq(req);
    }

    /**
     * 微信分享視頻
     * @param videoUrl
     * @param context
     */
    public static void WXVideoShare(String videoUrl, Context context){
        //初始化一個WXVideoObject對象,填寫url
        WXVideoObject video = new WXVideoObject();
        video.videoUrl = videoUrl;
        //用WXVideoObject初始化一個WXMediaMessage對象,填寫標題、描述
        WXMediaMessage msg = new WXMediaMessage();
        msg.mediaObject = video;
        msg.title = "視頻標題";
        msg.description = "視頻描述";
        //設置縮略圖
        Bitmap thumbBmp = BitmapFactory.decodeResource(context.getResources(), R.mipmap.icon_head_default);
//        msg.thumbData = ConvertUtil.ConvertBitmapToBytes(thumbBmp,true);
        msg.thumbData = Util.bmpToByteArray(thumbBmp,true);
        //構造一個Req
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.transaction = buildTransaction("video");//transaction字段用於惟一標識一個請求
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
        //分享到朋友圈：req.scene = SendMessageToWX.Req.WXSceneTimeline;
        //分享到好友會話：req.scene = SendMessageToWX.Req.WXSceneSession;
        //添加到微信收藏：req.scene = SendMessageToWX.Req.WXSceneFavorite;

        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(context, Constant.WEIXIN_APP_ID);
        }
        api.sendReq(req);
    }

    public static void WXWebpageShare(String webpageUrl,String title,String description,int imgRes, Context context){
//        Log.e("WXShare","webpage share WXWebpageObject");
        //初始化一個WXWebpageObject對象,填寫url
        WXWebpageObject webpage = new WXWebpageObject();
        webpage.webpageUrl = webpageUrl;
//        Log.e("WXShare","webpage share WXMediaMessage");
        //用WXWebpageObject初始化一個WXMediaMessage對象,填寫標題、描述
        WXMediaMessage msg = new WXMediaMessage();
        msg.mediaObject = webpage;
        msg.title = title;
        msg.description = description;
//        Log.e("WXShare","webpage share thumbBmp");
        //設置縮略圖
//        Bitmap bitmap= Glide.with(context).asBitmap().load(imgUrl);
////        Bitmap thumbBmp = BitmapFactory.decodeResource(context.getResources(), R.mipmap.icon_head_default);
////        msg.thumbData = ConvertUtil.bitmap2Bytes(thumbBmp,32*1024);
//        if (bitmap != null) {
//            msg.thumbData = Util.image2Bytes(imgUrl);
        Bitmap thumbBmp = BitmapFactory.decodeResource(context.getResources(), imgRes);
//        msg.thumbData = ConvertUtil.ConvertBitmapToBytes(thumbBmp,true);
        msg.thumbData = Util.bmpToByteArray(thumbBmp,true);
//        }

//        Log.e("WXShare","webpage share req");
        //構造一個Req
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.transaction = buildTransaction("webpage");//transaction字段用於惟一標識一個請求
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
        //分享到朋友圈：req.scene = SendMessageToWX.Req.WXSceneTimeline;
        //分享到好友會話：req.scene = SendMessageToWX.Req.WXSceneSession;
        //添加到微信收藏：req.scene = SendMessageToWX.Req.WXSceneFavorite;

        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(context, Constant.WEIXIN_APP_ID);
        }
//        Log.e("WXShare","webpage share sendReq");
        api.sendReq(req);
    }


    /**
     * 微信分享
     * @param mContext
     * @param url 地址
     * @param title 標題
     * @param desc 介紹
     * @param isFriends 朋友圈或好友
     * @param img 圖片
     */
    public static void wxShare(Context mContext, String url, String title, String desc, boolean isFriends, Bitmap img) {
        WXWebpageObject webpage = new WXWebpageObject();
        webpage.webpageUrl = url;
        WXMediaMessage msg = new WXMediaMessage(webpage);
        msg.title = title;
        msg.description = desc;
        msg.thumbData = bitmapBytes(img,true);
        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.transaction = String.valueOf(System.currentTimeMillis());
        req.message = msg;
        req.scene = SendMessageToWX.Req.WXSceneSession;
//        req.scene = friendsCircle ? SendMessageToWX.Req.WXSceneTimeline : SendMessageToWX.Req.WXSceneSession;
        //調用api接口發送數據到微信
        if (api==null){
            api = WXAPIFactory.createWXAPI(mContext, Constant.WEIXIN_APP_ID);
        }
//        Log.e("WXShare","webpage share sendReq");
        api.sendReq(req);
//        BaseApp.mWxApi.sendReq(req);
    }

    public static byte[] bitmapBytes(final Bitmap bmp, final boolean needRecycle) {
        int i;
        int j;
        if (bmp.getHeight() > bmp.getWidth()) {
            i = bmp.getWidth();
            j = bmp.getWidth();
        } else {
            i = bmp.getHeight();
            j = bmp.getHeight();
        }

        Bitmap localBitmap = Bitmap.createBitmap(i, j, Bitmap.Config.RGB_565);
        Canvas localCanvas = new Canvas(localBitmap);

        while (true) {
            localCanvas.drawBitmap(bmp, new Rect(0, 0, i, j), new Rect(0, 0,i, j), null);
            if (needRecycle)
                bmp.recycle();
            ByteArrayOutputStream localByteArrayOutputStream = new ByteArrayOutputStream();
            localBitmap.compress(Bitmap.CompressFormat.JPEG, 100,
                    localByteArrayOutputStream);
            localBitmap.recycle();
            byte[] arrayOfByte = localByteArrayOutputStream.toByteArray();
            try {
                localByteArrayOutputStream.close();
                return arrayOfByte;
            } catch (Exception e) {
                //F.out(e);
            }
            i = bmp.getHeight();
            j = bmp.getHeight();
        }
    }

}

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