Android(安卓)关于微信分享图片过大失败的解决方案

参考：https://blog.csdn.net/dl10210950/article/details/53125589

https://blog.csdn.net/yaya_soft/article/details/11077155

这是因为微信对缩略图做了限制，最大不超过32K

所以可以先通过图片加载工具获取bitmap，然后进行压缩，压缩方法如下：

   //压缩图片    public Bitmap createBitmapThumbnail(Bitmap bitMap) {        int width = bitMap.getWidth();        int height = bitMap.getHeight();        // 设置想要的大小        int newWidth = 99;        int newHeight = 99;        // 计算缩放比例        float scaleWidth = ((float) newWidth) / width;        float scaleHeight = ((float) newHeight) / height;        // 取得想要缩放的matrix参数        Matrix matrix = new Matrix();        matrix.postScale(scaleWidth, scaleHeight);        // 得到新的图片        Bitmap newBitMap = Bitmap.createBitmap(bitMap, 0, 0, width, height, matrix, true);        return newBitMap;    }

然后封装成UMusic对象进行音频分享：

 final UMusic music = new UMusic(detail.path);//音频媒体对象  UMImage umImage = new UMImage(mActivity, bitmap);//将缩略图封装成UMImage对象，在设置给音频媒体对象                        music.setTitle(detail.name);                        music.setThumb(umImage);    new ShareAction(mActivity).setPlatform(media).setCallback(umShareListener)//设置回调                .withTitle(detail.name)//标题                .withText(getString(R.string.share_text_pre) + detail.name + getString(R.string.share_text_next))//描述信息                .withMedia(uMusic)//媒体对象                .withTargetUrl(url)//目标地址，就是点击分享要跳转的页面                .share();

分享视频：

   String url = postShareContent(mainUrl, detail);//url点击跳转页面地址        UMVideo image = new UMVideo(url);        image.setTitle(detail.name);        image.setThumb(detail.coverpath);//这里如果图片过大也应该和音频一样，        Log.LOG = false;        new ShareAction(mActivity).setPlatform(media).setCallback(umShareListener)                .withTitle(detail.name)                .withText(getString(R.string.share_text_pre) + detail.name + getString(R.string.share_text_next))                .withMedia(image)//                .withTargetUrl(url)//地址封装在UMVideo中，所以不必调用此方法                .share();        LoggerUtils.d(TAG + "\n" + String.format(" 分享地址 ：%s \n 分享标题 ：%s \n 分享图标 ：%s \n 分享音频 ：%s",                url,detail.name,detail.coverpath,detail.path));

分享图片：

        UMImage image = new UMImage(mActivity, detail.path);        image.setTitle(detail.name);        image.setThumb(detail.coverpath);        String url = postShareContent(mainUrl, detail);        Log.LOG = false;//        Config.IsToastTip = true;        new ShareAction(mActivity).setPlatform(media).setCallback(umShareListener)                .withTitle(detail.name)                .withText(getString(R.string.share_text_pre) + detail.name + getString(R.string.share_text_next))                .withMedia(image)                .withTargetUrl(url)                .share();

最后接口回调类：

    /**     * 分享回调监听     */    private UMShareListener umShareListener = new UMShareListener() {        @Override        public void onResult(SHARE_MEDIA platform) {            LoggerUtils.d("share Result");        }        @Override        public void onError(SHARE_MEDIA platform, Throwable t) {            if (t != null) {                LoggerUtils.d(t.getMessage());            }        }        @Override        public void onCancel(SHARE_MEDIA platform) {            LoggerUtils.d("share cancel");        }    };

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