Android 掃描條形碼（Zxing插件）

使用Android Studio

一、在build.gradle(Module:app)添加代碼  下載，調用插件

 1 apply plugin: 'com.android.application'
 2 
 3 android {
 4     compileSdkVersion 24
 5     buildToolsVersion "24.0.1"
 6 
 7     defaultConfig {
 8         applicationId "com.example.ly.scanrfid"
 9         minSdkVersion 19
10         targetSdkVersion 24
11         versionCode 1
12         versionName "1.0"
13     }
14     buildTypes {
15         release {
16             minifyEnabled false
17             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
18         }
19     }
20     repositories {
21         mavenCentral()
22         maven {
23             url "http://dl.bintray.com/journeyapps/maven"
24         }
25     }
26 }
27 
28 dependencies {
29     compile fileTree(dir: 'libs', include: ['*.jar'])
30     testCompile 'junit:junit:4.12'
31     compile 'com.android.support:appcompat-v7:24.2.1'
32     // Supports Android 4.0.3 and later (API level 15)
33     compile 'com.journeyapps:zxing-android-embedded:2.0.1@aar'
34 
35     // Supports Android 2.1 and later (API level 7), but not optimal for later Android versions.
36     // If you only plan on supporting Android 4.0.3 and up, you don't need to include this.
37     compile 'com.journeyapps:zxing-android-legacy:2.0.1@aar'
38 
39     // Convenience library to launch the scanning and encoding Activities.
40     // It automatically picks the best scanning library from the above two, depending on the
41     // Android version and what is available.
42     compile 'com.journeyapps:zxing-android-integration:2.0.1@aar'
43 
44     // Version 3.0.x of zxing core contains some code that is not compatible on Android 2.2 and earlier.
45     // This mostly affects encoding, but you should test if you plan to support these versions.
46     // Older versions e.g. 2.2 may also work if you need support for older Android versions.
47     compile 'com.google.zxing:core:3.0.1'
48 }

二、添加許可權

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.example.ly.scanrfid">
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.VIBRATE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>

</manifest>

三、Activity代碼

package com.example.ly.scanrfid;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    //    掃描按鈕點擊監聽事件
    public void clickScan(View view) {
        //掃描操作
        IntentIntegrator integrator = new IntentIntegrator(MainActivity.this);
        integrator.initiateScan();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        //    跳轉掃描頁面返回掃描數據
        IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
        //        判斷返回值是否為空
        if (scanResult != null) {
            //返回條形碼數據
            String result = scanResult.getContents();
            Log.d("code", result);
            Toast.makeText(this, result, Toast.LENGTH_LONG).show();
        }
    }
}