二维码扫描 ZBar基础

第一步、加依赖

	   implementation 'cn.bingoogolapple:bga-qrcode-zbar:1.2.1'或
	   implementation 'cn.bingoogolapple:bga-qrcode-zxing:1.2.1'

第二步、添加权限

	<!--添加权限-->
    	<uses-permission android:name="android.permission.VIBRATE" />
    	<uses-permission android:name="android.permission.CAMERA"/>

第三步、布局

	<?xml version="1.0" encoding="utf-8"?>
	<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
	    xmlns:app="http://schemas.android.com/apk/res-auto"
	    xmlns:tools="http://schemas.android.com/tools"
	    android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    tools:context=".MainActivity">
	
	    <cn.bingoogolapple.qrcode.zbar.ZBarView
	        android:id="@+id/zbarview"
	        app:qrcv_animTime="1000"
	        app:qrcv_borderColor="@android:color/white"
	        app:qrcv_borderSize="1dp"
	        app:qrcv_cornerColor="@color/colorPrimaryDark"
	        app:qrcv_cornerLength="20dp"
	        app:qrcv_cornerSize="3dp"
	        app:qrcv_isShowDefaultScanLineDrawable="true"
	        app:qrcv_maskColor="#33FFFFFF"
	        app:qrcv_rectWidth="200dp"
	        app:qrcv_scanLineColor="@color/colorPrimaryDark"
	        app:qrcv_topOffset="90dp"
	        android:layout_height="wrap_content"
	        android:layout_width="wrap_content" />
	
	</android.support.constraint.ConstraintLayout>

第四步、main方法的代码

	package com.gj.erweimazbar;

	import android.os.Vibrator;
	import android.support.v7.app.AppCompatActivity;
	import android.os.Bundle;
	import android.widget.Toast;
	
	import cn.bingoogolapple.qrcode.core.QRCodeView;
	
	public class MainActivity extends AppCompatActivity implements QRCodeView.Delegate {
	
	    private QRCodeView mQRCodeView;
	
	    @Override
	    protected void onCreate(Bundle savedInstanceState) {
	        super.onCreate(savedInstanceState);
	        setContentView(R.layout.activity_main);
	        mQRCodeView = findViewById(R.id.zbarview);
	        mQRCodeView.setDelegate(this);
	    }
	
	    //第二步：获取控件，并实现QRCodeView.Delegate接口
	    @Override
	    public void onScanQRCodeSuccess(String result) {
	        vibrate();
	        Toast.makeText(this,result,Toast.LENGTH_SHORT).show();
	        mQRCodeView.startSpot();
	    }
	
	    @Override
	    public void onScanQRCodeOpenCameraError() {
	        Toast.makeText(this,"错误",Toast.LENGTH_SHORT).show();
	    }
	
	    @Override
	    protected void onStart() {
	        super.onStart();
	        mQRCodeView.startCamera();//打开相机
	        mQRCodeView.showScanRect();//显示扫描框
	        mQRCodeView.startSpot();//开始识别二维码
	        //mQRCodeView.openFlashlight();//开灯
	        //mQRCodeView.closeFlashlight();//关灯
	    }
	
	    @Override
	    protected void onStop() {
	        mQRCodeView.startCamera();
	        super.onStop();
	    }
	
	    @Override
	    protected void onDestroy() {
	        mQRCodeView.onDestroy();
	        super.onDestroy();
	    }
	
	    private void vibrate() {
	        Vibrator vibrator  = (Vibrator) getSystemService(VIBRATOR_SERVICE);
	        vibrator.vibrate(200);
	    }
	}