29、Android 微信分享checkArgs fail, thumbData is invalid

一、问题现象

在做微信分享功能时，分享网页加缩略图时，点击分享一直没反应。经过查看日志

checkArgs fail, thumbData is invalid  出现这样的一个错误提示。

二、原因分析

经过百度一番：原来微信对缩略图的大小进行了限制。超过32K 就会报参数错误！

 final boolean checkArgs() {

        if(this.getType() != 8 || this.thumbData != null && this.thumbData.length != 0) {
            if(this.getType() == 36 && (this.thumbData == null || this.thumbData.length > 131072)) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, thumbData should not be null or exceed 128kb");
                return false;
            } else if(this.getType() != 36 && this.thumbData != null && this.thumbData.length > '耀') {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, thumbData is invalid");
                return false;
            } else if(this.title != null && this.title.length() > 512) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, title is invalid");
                return false;
            } else if(this.description != null && this.description.length() > 1024) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, description is invalid");
                return false;
            } else if(this.mediaObject == null) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, mediaObject is null");
                return false;
            } else if(this.mediaTagName != null && this.mediaTagName.length() > 64) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, mediaTagName is too long");
                return false;
            } else if(this.messageAction != null && this.messageAction.length() > 2048) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, messageAction is too long");
                return false;
            } else if(this.messageExt != null && this.messageExt.length() > 2048) {
                Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, messageExt is too long");
                return false;
            } else {
                return this.mediaObject.checkArgs();
            }
        } else {
            Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, thumbData should not be null when send emoji");
            return false;
        }
    }

三、解决方法

修改微信提供的方法：

 public static byte[] bmpToByteArray(final Bitmap bmp, final boolean needRecycle) {
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        bmp.compress(Bitmap.CompressFormat.PNG, 100, output);
        if (needRecycle) {
            bmp.recycle();
        }

        byte[] result = output.toByteArray();
        try {
            output.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return result;
    }

使用这个方法：注意要是还是不行 ----》 将100 调小！！！ 至10 试试

 localBitmap.compress(Bitmap.CompressFormat.JPEG, 100,
                    localByteArrayOutputStream);

public static byte[] bmpToByteArray(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();
        }
    }