[移动开发]Android简单二维码库使用

本篇文章使用的是

Github：GitHub - yipianfengye/android-zxingLibrary: 几行代码快速集成二维码扫描功能

代码中使用了dataBinding

在app的build.gradle中添加

implementation 'cn.yipianfengye.android:zxing-library:2.2'

Application中执行初始化操作

ZXingLibrary.initDisplayOpinion(this)

?定制化显示扫描UI

activity_scan.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>

    </data>

    <androidx.appcompat.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <androidx.appcompat.widget.Toolbar
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/white"
            app:navigationIcon="@drawable/ic_back">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="@string/scan_setting"
                android:textColor="@color/black"
                android:textSize="18sp"
                android:textStyle="bold" />

        </androidx.appcompat.widget.Toolbar>

        <FrameLayout
            android:id="@+id/fl_my_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </androidx.appcompat.widget.LinearLayoutCompat>
</layout>

?扫描界面代码

ScanActivity.kt

class ScanActivity : AppCompatActivity() {
    private lateinit var binding: ActivityScanBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityScanBinding.inflate(layoutInflater)
        setContentView(binding.root)
        initView()
    }

    private fun initView() {
        val captureFragment = CaptureFragment()
        CodeUtils.setFragmentArgs(captureFragment, R.layout.my_camera)
        captureFragment.analyzeCallback = analyzeCallback
        supportFragmentManager.beginTransaction().replace(R.id.fl_my_container, captureFragment)
            .commit()
    }

    private val analyzeCallback = object : CodeUtils.AnalyzeCallback {
        override fun onAnalyzeSuccess(bitmap: Bitmap, result: String) {
            val resultIntent = Intent()
            val bundle = Bundle()
            bundle.putInt(CodeUtils.RESULT_TYPE, CodeUtils.RESULT_SUCCESS)
            bundle.putString(CodeUtils.RESULT_STRING, result)
            resultIntent.putExtras(bundle)
            setResult(RESULT_OK, resultIntent)
            finish()
        }

        override fun onAnalyzeFailed() {
            val resultIntent = Intent()
            val bundle = Bundle()
            bundle.putInt(CodeUtils.RESULT_TYPE, CodeUtils.RESULT_FAILED)
            bundle.putString(CodeUtils.RESULT_STRING, "")
            resultIntent.putExtras(bundle)
            setResult(RESULT_OK, resultIntent)
            finish()
        }
    }

}

?MainActivity调用

class MainActivity : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
private lateinit var registerForActivityResult: ActivityResultLauncher<Intent>

 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
        initData()
    }

    private fun initData() {
        register()
        //...
        initListener()
    }

    private fun initListener() {
        binding.btnScan.noFastClick {
            registerForActivityResult.launch(Intent(this, ScanActivity::class.java))
        }
    }

 private fun register() {
        registerForActivityResult =
            registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
                if (it.data != null && it.resultCode == Activity.RESULT_OK) {
                    val bundle = it.data?.extras
                    bundle?.let {
                        if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS) {
                            //扫码成功
                            val result = bundle.getString(CodeUtils.RESULT_STRING)
                            }
                        } else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED) {
                            //扫码失败
                        }
                    }
                }
            }
    }

    override fun onDestroy() {
        registerForActivityResult.unregister()
        super.onDestroy()
    }
}

更多请看作者GitHub