Android微信分享大图遇到的问题的解决方法

public void WXsharePic(String transaction, final boolean isSession, Bitmap bitmap) {
  //初始化WXImageObject和WXMediaMessage对象
  WXImageObject imageObject = new WXImageObject(bitmap);
  WXMediaMessage msg = new WXMediaMessage();
  msg.mediaObject = imageObject;
  //设置缩略图
  Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, 200, 200, true);
  bitmap.recycle();
  msg.thumbData = getBitmapByte(scaledBitmap);
  //构造一个Req
  SendMessageToWX.Req req = new SendMessageToWX.Req();
  req.transaction = transaction + Long.toString(System.currentTimeMillis());
  req.message = msg;
  //表示发送给朋友圈 WXSceneTimeline 表示发送给朋友 WXSceneSession
  req.scene = isSession ? SendMessageToWX.Req.WXSceneSession : SendMessageToWX.Req.WXSceneTimeline;
  //调用api接口发送数据到微信
  api.sendReq(req);
}

public static byte[] bitmap2Bytes(Bitmap bitmap, int maxkb) {
  ByteArrayOutputStream output = new ByteArrayOutputStream();
  bitmap.compress(Bitmap.CompressFormat.PNG, 100, output);
  int options = 100;
  while (output.toByteArray().length > maxkb&& options != 10) {
    output.reset(); //清空output
    bitmap.compress(Bitmap.CompressFormat.JPEG, options, output);//这里压缩options%，把压缩后的数据存放到output中
    options -= 10;
  }
  return output.toByteArray();
}

public void WXsharePic(String transaction, final boolean isSession, Bitmap bitmap, String path) {
  //初始化WXImageObject和WXMediaMessage对象
  WXImageObject imageObject;
  if (!StringUtil.isBlank(path)) {
    imageObject = new WXImageObject();
    imageObject.setImagePath(path);
  } else {
    imageObject = new WXImageObject(bitmap);
  }
  WXMediaMessage msg = new WXMediaMessage();
  msg.mediaObject = imageObject;
  //设置缩略图
  Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, 200, 200, true);
  bitmap.recycle();
  msg.thumbData = getBitmapByte(scaledBitmap);
  //构造一个Req
  SendMessageToWX.Req req = new SendMessageToWX.Req();
  req.transaction = transaction + Long.toString(System.currentTimeMillis());
  req.message = msg;
  //表示发送给朋友圈 WXSceneTimeline 表示发送给朋友 WXSceneSession
  req.scene = isSession ? SendMessageToWX.Req.WXSceneSession : SendMessageToWX.Req.WXSceneTimeline;
  //调用api接口发送数据到微信
  api.sendReq(req);
}

private void shareToMoment() {
  final Bitmap sharePicture = getBitmapByView(svShare);
  AndPermission.with(this)
      .permission(Permission.WRITE_EXTERNAL_STORAGE)
      .onGranted(new Action() {
        @Override
        public void onAction(List<String> permissions) {
          String path = saveImageToGallery(sharePicture);
          WXsharePic("he" + System.currentTimeMillis(), true, sharePicture, path);
        }
      })
      .onDenied(new Action() {
        @Override
        public void onAction(@NonNull List<String> permissions) {
          Log.e("Activity", "权限申请失败");
        }
      })
      .start();
}

public String saveImageToGallery(Bitmap bmp) {
   // 首先保存图片
   String storePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "dearxy";
   File appDir = new File(storePath);
   if (!appDir.exists()) {
     appDir.mkdir();
   }
   String fileName = System.currentTimeMillis() + ".jpg";
   File file = new File(appDir, fileName);
   try {
     FileOutputStream fos = new FileOutputStream(file);
     //通过io流的方式来压缩保存图片
     bmp.compress(Bitmap.CompressFormat.JPEG, 60, fos);
     fos.flush();
     fos.close();
   } catch (IOException e) {
     e.printStackTrace();
   }
   return storePath + "/" + fileName;
 }