扫描二维码简单实现Zxing

素颜马尾好姑娘i 2022-07-11 09:00 217阅读 0赞

本文介绍了Zxing简单使用，目前是使用build.gradle引用方式，效果为横屏扫描，至于如何调整为竖屏使用，好多帖子采用修改源码实现，各位若有更简洁可行的办法，麻烦不吝赐教，谢谢。  
![这里写图片描述][SouthEast]

![这里写图片描述][SouthEast 1]

![这里写图片描述][SouthEast 2]

具体实现分三步：

### 1. 在build.gradle中加入如下代码（参考上图） ###

与android\{\}并列加入：

repositories {
        mavenCentral()
        maven {
            url "http://dl.bintray.com/journeyapps/maven"
        }
    }

dependencies中加入zxing相关compile：

dependencies {
        compile fileTree(dir: 'libs', include: ['*.jar'])
        testCompile 'junit:junit:4.12'
        compile 'com.android.support:appcompat-v7:23.4.0'
        // Supports Android 4.0.3 and later (API level 15)
        compile 'com.journeyapps:zxing-android-embedded:2.0.1@aar'
    
        // Supports Android 2.1 and later (API level 7), but not optimal for later Android versions.
        // If you only plan on supporting Android 4.0.3 and up, you don't need to include this.
        compile 'com.journeyapps:zxing-android-legacy:2.0.1@aar'
    
        // Convenience library to launch the scanning and encoding Activities.
        // It automatically picks the best scanning library from the above two, depending on the
        // Android version and what is available.
        compile 'com.journeyapps:zxing-android-integration:2.0.1@aar'
    
        // Version 3.0.x of zxing core contains some code that is not compatible on Android 2.2 and earlier.
        // This mostly affects encoding, but you should test if you plan to support these versions.
        // Older versions e.g. 2.2 may also work if you need support for older Android versions.
        compile 'com.google.zxing:core:3.0.1'
    }

### 2. 清单文件中加入对应权限 ###

<uses-permission android:name="android.permission.CAMERA"/>  
    <uses-permission android:name="android.permission.VIBRATE"/>  
    <uses-permission android:name="android.permission.INTERNET"/>

### 3. 代码中引用：初始化扫描界面，重写onActivityResult() ###

public class MainActivity extends AppCompatActivity { 
        private TextView tv_result;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            tv_result = (TextView) findViewById(R.id.tv_result);
        }
    
        //点击事件
        public void startScan(View view) {
            IntentIntegrator integrator = new IntentIntegrator(MainActivity.this);
            integrator.initiateScan();
        }
    
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // super.onActivityResult(requestCode, resultCode, data);
            IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
            if (scanResult != null) {
                String result = scanResult.getContents();
                if (null != result) {
                    tv_result.setText(result);
                    Toast.makeText(MainActivity.this, result, Toast.LENGTH_SHORT).show();
                }
            }
        }
    }

提示：可以使用草料生成二维码，用于测试。

[SouthEast]: /images/20220711/0284639feef241ef873009e9d2bc345c.png
[SouthEast 1]: /images/20220711/8dfe4ef099124269a0ef6c5aab2cb72e.png
[SouthEast 2]: /images/20220711/b5c13339469547a78288abfd3dc3fcd1.png