androd 微信分享view给好友或朋友圈

image.png
image.png

/**
     * 该方式原理主要是：View组件显示的内容可以通过cache机制保存为bitmap
     */
fun createBitmapFromView(view: View): Bitmap {
    val bitmap = Bitmap.createBitmap(view.width, view.height,Bitmap.Config.RGB_565)
    val canvas = Canvas(bitmap)
    view.draw(canvas)
    return bitmap
}

bitmap转byteArray

fun wxBmpToByteArray(bmp: Bitmap,needRecycle: Boolean): ByteArray? {
        val output = ByteArrayOutputStream()
        bmp.compress(Bitmap.CompressFormat.PNG, 100, output)
        if (needRecycle) {
            bmp.recycle()
        }
        val result = output.toByteArray()
        try {
            output.close()
        } catch (e: java.lang.Exception) {
            e.printStackTrace()
        }
        return result
    }

调用案例

val bmp = PublicTools.tools.createBitmapFromView(llPostLay)
bmp?.let {
      val api = WXAPIFactory.createWXAPI(context, MyParms.APPID)
      val imgObj = WXImageObject(it)

      val msg = WXMediaMessage()
      msg.mediaObject = imgObj
      val thumbBmp = Bitmap.createScaledBitmap( it,150,150, true )
      msg.thumbData = PublicTools.tools.wxBmpToByteArray(thumbBmp,true)
      it.recycle()

     val req = SendMessageToWX.Req()
     req.transaction = PublicTools.tools.buildTransaction("img")
     req.message = msg
     req.scene = SendMessageToWX.Req.WXSceneTimeline
     api.sendReq(req)
}