public bool SendImage(Android.Graphics.Bitmap bitmap, WXScene scene = 0)
{
if (bitmap == null)
{
throw new Exception("(Android.Graphics.Bitmap) bitmap is null");
}
WXImageObject imgObj = new WXImageObject(bitmap);
WXMediaMessage wxMediaMessage = new WXMediaMessage();
wxMediaMessage.MyMediaObject = imgObj;
// 设置缩略图
int thumbSize = 150; // 150是根据官网demo设置
Android.Graphics.Bitmap thumbBmp = bitmap.ScaledBitmap(thumbSize, thumbSize, false); // 扩展方法
bitmap.Recycle();
wxMediaMessage.ThumbData = thumbBmp.ToArray(true); // 扩展方法
//构造一个Req请求
SendMessageToWX.Req req = new SendMessageToWX.Req();
//唯一的请求标志
req.Transaction = System.Guid.NewGuid().ToString();
req.Message = wxMediaMessage;
// req.Scene = SendMessageToWX.Req.WXSceneSession; // 发送信息
// req.Scene = SendMessageToWX.Req.WXSceneTimeline; // 发送朋友圈
req.Scene = (int)scene;
//发送数据
return(api.SendReq(req));
}
//分享图片
partial void UIButton12_TouchUpInside(UIButton sender)
{
try
{
//初始化一个WXImageObject对象，设置要分享的图片
WXImageObject imageObj = new WXImageObject();
NSData data = NSData.FromFile("icon.png");
imageObj.ImageData = data;
//设置WXMediaMessage对象
WXMediaMessage msg = new WXMediaMessage();
msg.SetThumbImage(UIImage.FromFile("icon.png"));
msg.MediaObject = imageObj;
//构造SendMessageToWXReq请求
SendMessageToWXReq req = new SendMessageToWXReq();
req.BText = false;
req.Message = msg;
req.Scene = (int)WXScene.Timeline;
//发送数据
var result = WXApi.SendReq(req);
UIAlertView alertView = new UIAlertView("", "分享结果:" + result, null, "取消");
alertView.Show();
}
catch (Exception ex)
{
UIAlertView alertView = new UIAlertView("", "异常:" + ex, null, "取消");
alertView.Show();
}
}
//分享图片类型
private void BtnImage_Click(object sender, EventArgs e)
{
Bitmap bitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.Icon);
//设置缩略图
Bitmap thumb = Bitmap.CreateScaledBitmap(bitmap, 50, 50, true);
bitmap.Recycle();
MemoryStream ms = new MemoryStream();
thumb.Compress(Bitmap.CompressFormat.Png, 0, ms);
byte[] bytes = ms.ToArray();
//初始化WXImageObject，设置分享的图片
WXImageObject imgObj = new WXImageObject(bitmap);
//初始化WXMediaMessage对象
WXMediaMessage msg = new WXMediaMessage();
msg.MyMediaObject = imgObj;
msg.ThumbData = bytes;
//构造一个Req请求
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.Transaction = Guid.NewGuid().ToString();
req.Message = msg;
req.Scene = SendMessageToWX.Req.WXSceneSession;
//发送数据
api.SendReq(req);
}
/// <summary>
/// 分享一张图片
/// </summary>
/// <param name="shareBitmap">网页链接</param>
/// <param name="isWXSceneTimeline">true:分享到朋友圈;false:分享给好友</param>
/// <returns>无</returns>
public void ShareImage(Bitmap shareBitmap, bool isWXSceneTimeline)
{
WXImageObject imgObj = new WXImageObject(shareBitmap);
WXMediaMessage msg = new WXMediaMessage();
msg.MyMediaObject = imgObj;
Bitmap thumbBmp = Bitmap.CreateScaledBitmap(shareBitmap, THUMB_SIZE, THUMB_SIZE, true);
using (MemoryStream stream = new MemoryStream())
{
shareBitmap.Compress(Bitmap.CompressFormat.Png, 100, stream);
msg.ThumbData = stream.ToArray(); //设置缩略图
}
SendMessageToWX.Req req = new SendMessageToWX.Req()
{
Transaction = buildTransaction("img"),
Message = msg,
Scene = isWXSceneTimeline ? WECHAT_SHARE_TYPE_FRENDS
: WECHAT_SHARE_TYPE_TALK,
};
mWXApi.SendReq(req);
}
