Android 超简易Zxing框架 生成二维码+扫码功能

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
  }

<uses-sdk tools:overrideLibrary="com.google.zxing.client.android" /> 
<uses-permission android:name="android.permission.CAMERA"/>

public Bitmap encodeBitmap(String contents, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) throws WriterException

package com.example.xianyu;
import android.graphics.Bitmap;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.journeyapps.barcodescanner.BarcodeEncoder;
import java.util.HashMap;
import java.util.Map;

public class QRcode{
  public Bitmap qrcode(String content){
  int width = 400;
  int height = 400;
    //HashMap设置二维码参数
    Map map = new HashMap();
    //  设置容错率 L>M>Q>H 等级越高扫描时间越长,准确率越高
    map.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
    //设置字符集
    map.put(EncodeHintType.CHARACTER_SET,"utf-8");
    //设置外边距
    map.put(EncodeHintType.MARGIN,1);
    //利用编码器，生成二维码
    BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
    Bitmap bitmap = null;
    try {
      bitmap = barcodeEncoder.encodeBitmap(content, BarcodeFormat.QR_CODE, width, height,map);
    } catch (WriterException e) {
      e.printStackTrace();
    }
    return bitmap;
  }
}

public class MainActivity extends AppCompatActivity {
 ImageView Code;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Code = findViewById(R.id.iv_code);
    QRcode qrcode = new QRcode();
    Bitmap bitmap= qrcode.qrcode("CSDN");
    Code.setImageBitmap(bitmap);
    }

IntentIntegrator.parseActivityResult(requestCode, resultCode, data);

public static IntentResult parseActivityResult(int requestCode, int resultCode, Intent intent) {
    if (requestCode == REQUEST_CODE) {
      return parseActivityResult(resultCode, intent);
    }
    return null;
  }

Code.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View view) {
       Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
       startActivityForResult(intent,REQUEST_CODE);
     }
   });

@Override
  protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
      IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if(result != null) {
      if(result.getContents() == null) {
        Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
      } else {
        Toast.makeText(this, "Scanned: "   result.getContents(), Toast.LENGTH_LONG).show();
      }
    } else {
      super.onActivityResult(requestCode, resultCode, data);
    }
    }