wx.chooseLocation真机未开启调试不能显示，开发工具可以显示，真机开启调试可以显示！ 这个bug在电脑端小程序也有同样问题。也可以提供录屏。这个很神奇。 wx.chooseLocation({ success(res){ maps.getlocation(res).then(result=>{ that.setData({'corpinfo.corp_address_info':result}) }) } }) [图片] [图片]

为什么wx.navigateBack 调用eventChannel会失败？？？？ wx.navigateBack({ delta: 1, success: function(res) { res.eventChannel.emit('pagestaffchoose', data) } }) return MiniProgramError Cannot read property 'emit' of undefined TypeError: Cannot read property 'emit' of undefined     at success (http://127.0.0.1:57434/appservice/pages/xxx/xxxxx/xxxx.js:63:30)     at Function.forEach.s.<computed> (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:2450694)     at <api navigateBack success callback function>     at Object.success (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:114522)     at r (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1191114)     at http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1191297     at v (http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1191301)     at http://127.0.0.1:57434/appservice/__dev__/WAService.js?t=wechat&s=1646121741371&v=2.19.1:2:1192725     at http://127.0.0.1:57434/appservice/__dev__/asdebug.js:1:48487     at C (http://127.0.0.1:57434/appservice/__dev__/asdebug.js:1:48142)

wx.saveImageToPhotosAlbum不会再次提示用户授权，是否有方法唤起用户再次授权？ 复现方法：可以先拒绝授权，然后选择保存图片，测试。

PC端微信小程序文件上传？pc 端 wx.chooseMessageFile上传文件问题啥时候解决？

模拟器没一点问题，真机各种问题 const eventChannel = that.getOpenerEventChannel() eventChannel.emit('acceptDataFromSelectPositionPage', postdata) wx.navigateBack({ elta: 1 }) 这样emit都能undefined？上线几个月都没问题，这两天天天出问题？ [图片]

微信支付v3。回调签名认证一直失败。支付后的回调验证，已经按照他一模一样处理了，还是不行。 https://wechatpay-api.gitbook.io/wechatpay-api-v3/qian-ming-zhi-nan-1/qian-ming-yan-zheng

微信支付v3。回调签名认证一直失败。支付后的回调验证，已经按照他一模一样处理了，还是不行。 https://wechatpay-api.gitbook.io/wechatpay-api-v3/qian-ming-zhi-nan-1/qian-ming-yan-zheng

wx.canvasToTempFilePath({ x: x,y: y,width: width,height: height,destWidth: width,destHeight: height ,canvas: canvas, success: (res) => { console.log(res) }, fail(res){console.log(res)}, complete(res){console.log(res)} }) <canvas type="2d" id="canvas1"></canvas> <canvas type="2d" id="canvas2"></canvas> 第一个canvas，wx.canvasToTempFilePath渲染有返回， 第二个canvas,success,fail,complete，都没任何返回。

想实现canvas do，undo的效果，发现canvas.toDataURL is not a function? do(e){ var that=this wx.createSelectorQuery().select('#canvas'+that.data.list.genre).fields({ node: true, size: true }).exec( (res)=>{ const canvas = res[0].node that.data.canvas.history=[] that.data.canvas.history.push(canvas.toDataURL('image/png',1)) } ) }[图片]

appid:wx78808602da8913f8 url:https://api.muaaa.cn/apii/acswechat/opindex public function opindexAction(){         header("Content-type: text/html; charset=utf-8");         //valid signature , option         if ($this->checkSignature()) {             echo $_GET["echostr"];             exit;         }     }          //验证所有者使用     private function checkSignature(){         header("Content-type: text/html; charset=utf-8");         $signature = $_GET["signature"];         $timestamp = $_GET["timestamp"];         $nonce = $_GET["nonce"];         $token = 'muaaawechattoken';         $tmpArr = [$token, $timestamp, $nonce];         sort($tmpArr);         $tmpStr = implode('',$tmpArr);         $tmpStr = sha1( $tmpStr );         if( $tmpStr == $signature ){             return true;         }else{             return false;         }     }