测试原生蓝牙打印

components/gprint/printmixin.js

+var tsc = require('./tsc.js')
+import bluetoothTool from './BluetoothTool.js'
+export default {
+    data () {
+      return {
+        devices: [],
+        currDev: null,
+        connId: '',
+        first:true,
+        tableDomId: '',
+        tableImgPath: '',
+        canvasWidth: 800,
+        canvasHeight: 600
+      }
+    },
+    created () {
+        //#ifdef APP-PLUS
+        // 蓝牙
+        bluetoothTool.init({
+            listenBTStatusCallback: (state)=> {
+                // if(state == 'STATE_ON') {
+                //     let lastBleAddress = uni.getStorageSync('lastBleAddress')
+                //     if(lastBleAddress) {
+                //         uni.showLoading({
+                //             title: '正在连接...'
+                //         })
+                //         console.log(lastBleAddress)
+                //         bluetoothTool.connDevice(lastBleAddress,(result)=>{
+                //             uni.hideLoading()
+                //             uni.showToast({
+                //                 title: result?'连接成功！':'连接失败...'
+                //             });
+                //         })
+                //     }
+                // }
+            },
+            discoveryDeviceCallback: this.onDevice,
+            discoveryFinishedCallback: function() {
+                console.log('搜索到的设备', that.devices)
+            },
+            readDataCallback: function(dataByteArr) {
+                /* if(that.receiveDataArr.length >= 200) {
+                    that.receiveDataArr = [];
+                }
+                that.receiveDataArr.push.apply(that.receiveDataArr, dataByteArr); */
+            },
+            connExceptionCallback: function(e) {
+                console.log(e);
+                that.msg = "设备连接失败";
+            }
+        });
+        this.searchBle()
+        //#endif
+    },
+    computed: {
+     
+    },
+    methods: {
+        searchBle() {
+            var that = this
+            console.log("initBule")
+            // 使用openBluetoothAdapter 接口，免去主动申请权限的麻烦
+            uni.openBluetoothAdapter({
+                success(res) {
+                    this.devices = []
+                    console.log("打开 蓝牙模块，开始搜索模式...")
+                    console.log(res)
+                    bluetoothTool.discoveryNewDevice();
+                    //that.onDevice()
+                }
+            })
+        },
+        onDevice(newDevice){
+            console.log("监听寻找到新设备的事件---------------")
+            console.log(newDevice)
+            if(newDevice.name && newDevice.name != 'null') {
+                this.devices.push({
+                    name: newDevice.name,
+                    address: newDevice.address
+                })
+                if (newDevice.name === 'CT-428D' && this.first) {
+                    this.onConn(newDevice)
+                    this.first = false
+                }
+            }
+        },
+        onConn(item) {
+            console.log("连接蓝牙---------------" + item.address)
+            /* uni.showLoading({
+                title: '连接中',
+                mask: false
+            }); */
+            
+            bluetoothTool.connDevice(item.address,(result)=>{
+                if(result) {
+                    uni.setStorageSync('lastBleAddress', item.address)
+                }
+                console.log('连接结果：',result)
+            });
+        },
+        print (filePath) {
+            const firstCanvas = uni.createCanvasContext('firstCanvas', this);
+            const that = this
+            uni.getImageInfo({
+                src: filePath,
+                success(res) {
+                    that.canvasWidth = 800
+                    that.canvasHeight = 640
+                    console.log(res, that.canvasWidth, that.canvasHeight)
+                    firstCanvas.drawImage(filePath, 0, 0, that.canvasWidth, that.canvasHeight);
+                    firstCanvas.draw();
+                    that.$nextTick(() => { //获取画布像素数据
+                        uni.canvasGetImageData({
+                            canvasId: 'firstCanvas',
+                            x: 0,
+                            y: 0,
+                            width: that.canvasWidth,
+                            height: that.canvasHeight,
+                            success: (res)=> {
+                                var command = tsc.jpPrinter.createNew()
+                                command.init()
+                                command.setSize(100, 80)
+                                command.setGap(2)
+                                command.setCls()
+                                command.setBitmap2(0, 0, 0, res)
+                                command.setPagePrint()
+                                console.log('数据发送： \n',command.getRawData())
+                                let data = command.getData()
+                                console.log('data', data)
+                                bluetoothTool.sendByteData(data)
+                                console.log('发送完毕')
+                            },
+                            fail: function(res) {
+                                console.log(res)
+                            }
+                        })
+                    })
+                },
+                fail(res) {
+                    console.log(res)
+                }
+            })
+        },
+    }
+}
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