1. 添加依赖：
api 'com.google.zxing:core:3.3.3'
implementation 'com.king.zxing:zxing-lite:1.1.2-androidx'
2. xml布局文件：扫码界面
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.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"> <SurfaceView android:id="@+id/surfaceView" android:layout_width="match_parent" android:layout_height="match_parent"/> <com.king.zxing.ViewfinderView android:id="@+id/viewfinderView" android:layout_width="match_parent" android:layout_height="match_parent" app:labelTextColor="#ffffff" app:labelTextLocation="bottom" app:laserColor="#e06c51" app:frameColor="#e06c51" app:cornerColor="#e06c51" app:maskColor="#7f7f7f" app:laserStyle="line" app:gridHeight="0dp"/> <RelativeLayout android:id="@+id/ll" android:layout_width="match_parent" android:layout_height="50dp" android:background="#000000" tools:ignore="MissingConstraints"> <ImageView android:id="@+id/iv_scan_back" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_alignParentLeft="true" android:layout_gravity="center_vertical" android:paddingRight="14dp" android:src="@drawable/ic_back_dark_selector" /> <TextView android:id="@+id/tvTitle" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_centerHorizontal="true" android:ellipsize="middle" android:gravity="center" android:singleLine="true" android:text="@string/qrcode_scan_title" android:textColor="#ffffff" android:textSize="18dp" /> </RelativeLayout> <TextView android:id="@+id/ivFlash" android:layout_width="wrap_content" android:layout_height="wrap_content" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintBottom_toBottomOf="parent" android:layout_marginTop="560dp" android:visibility="gone" android:textColor="?android:attr/textColorPrimary"/> </androidx.constraintlayout.widget.ConstraintLayout>
3.扫码页面的类：QRCaptureActivity.java
import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Color; import android.graphics.Rect; import android.hardware.Camera; import android.media.Image; import android.os.Bundle; import android.text.TextUtils; import android.util.DisplayMetrics; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.TextView; import androidx.annotation.NonNull; import androidx.appcompat.widget.Toolbar; import com.eshare.businessclient.FindDeviceActivity; import com.eshare.businessclient.QRCodeActivity; import com.king.zxing.CaptureActivity; import com.king.zxing.DecodeFormatManager; import com.king.zxing.OnCaptureCallback; import com.king.zxing.camera.CameraConfigurationUtils; import com.king.zxing.camera.open.CameraFacing; import com.king.zxing.camera.open.OpenCamera; import com.king.zxing.camera.open.OpenCameraInterface; import com.viewsonic.vcastsender.R; import java.io.IOException; public class QRCaptureActivity extends CaptureActivity implements SurfaceHolder.Callback, OnCaptureCallback { private TextView ivFlash; private RelativeLayout ll; private ImageView ivScanBack; private SurfaceView surfaceView; int mSceenWidth; int mSceenHeight; public static void setMargins(View v, int l, int t, int r, int b) { if (v.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) { ViewGroup.MarginLayoutParams p = (ViewGroup.MarginLayoutParams) v.getLayoutParams(); p.setMargins(l, t, r, b); v.requestLayout(); } } @Override public int getLayoutId() { return R.layout.activity_qrcapture; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.d("LXP","onCreate..."); ll = findViewById(R.id.ll); setMargins(ll, 0, 50, 0, 0); TextView tvTitle = findViewById(R.id.tvTitle); tvTitle.setTextColor(Color.WHITE); ivFlash = findViewById(R.id.ivFlash); if (!hasTorch()) { ivFlash.setVisibility(View.GONE); } ivScanBack = findViewById(R.id.iv_scan_back); ivScanBack.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { finish(); } }); // 2.设置相机预览 surfaceView = findViewById(R.id.surfaceView); SurfaceHolder surfaceHolder = surfaceView.getHolder(); surfaceHolder.addCallback(this); //3.获取CaptureHelper，里面有扫码相关的配置设置 getCaptureHelper().playBeep(false)//播放音效 .vibrate(true)//震动 .decodeFormats(DecodeFormatManager.QR_CODE_FORMATS)//设置只识别二维码会提升速度 .supportVerticalCode(false)//支持扫垂直条码，建议有此需求时才使用。 .continuousScan(false);//是否连扫 } /** * 开启或关闭闪光灯（手电筒） * * @param on {@code true}表示开启，{@code false}表示关闭 */ public void setTorch(boolean on) { Camera camera = getCameraManager().getOpenCamera().getCamera(); Camera.Parameters parameters = camera.getParameters(); CameraConfigurationUtils.setTorch(parameters, on); camera.setParameters(parameters); } /** * 检测是否支持闪光灯（手电筒） * * @return */ public boolean hasTorch() { return getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH); } /** * 扫码结果回调 * * @param result 扫码结果 * @return */ @Override public boolean onResultCallback(String result) { Log.d("LXP","onResultCallback ----- result:"+result); //获取到扫码结果HmsScan，判断结果是否有效 if (result != null && !TextUtils.isEmpty(result)) { //成功 Intent resultIntent = new Intent(); Bundle bundle = new Bundle(); bundle.putInt("result_type", 1); bundle.putString("result_string", result); resultIntent.putExtras(bundle); setResult(RESULT_OK, resultIntent); finish(); } else { //失败 Intent resultIntent = new Intent(); Bundle bundle = new Bundle(); bundle.putInt("result_type", 2); bundle.putString("result_string", ""); resultIntent.putExtras(bundle); setResult(RESULT_OK, resultIntent); finish(); } return super.onResultCallback(result); } private void clickFlash(View v) { boolean isSelected = v.isSelected(); setTorch(!isSelected); v.setSelected(!isSelected); } public void onClick(View v) { switch (v.getId()) { case R.id.ivFlash: clickFlash(v); break; } } @Override public void surfaceCreated(@NonNull SurfaceHolder surfaceHolder) { } @Override public void surfaceChanged(@NonNull SurfaceHolder surfaceHolder, int i, int i1, int i2) { } @Override public void surfaceDestroyed(@NonNull SurfaceHolder surfaceHolder) { } }
4. 回调
1.点击按钮扫码 case R.id.tv_pincode_scan: if(PermissionUtils.requestCamera1Permissions(this)){ toQRCaptureActivity(); } 2.跳转扫码页面 private void toQRCaptureActivity() { Log.d("LXP","scan qrcode"); Intent intent1 = new Intent(); intent1.putExtra(KEY_TITLE, this.getString(R.string.find_device)); intent1.setClass(this.getApplicationContext(), QRCaptureActivity.class); startActivityForResult(intent1, REQUEST_CODE_SCAN); } 3.数据回调 @Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { Log.d("LXP","onActivityResult-----requestCode:"+requestCode+" resultCode:"+resultCode); super.onActivityResult(requestCode, resultCode, data); if (requestCode == 1 && resultCode == -1) { String qrResult = data.getStringExtra("result_string"); Log.d("LXP","qrResult:"+qrResult); if (!TextUtils.isEmpty(qrResult)) { qrResult = FileUtils.toURLDecoder(qrResult); parsingScanCodeData(qrResult); } } }