生成 扫描 二维码

依赖
implementation ‘cn.bingoogolapple:bga-qrcode-zxing:1.3.4’

布局

<?  version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout  ns:android=\"http://schemas.android.com/apk/res/android\"
     ns:app=\"http://schemas.android.com/apk/res-auto\"
     ns:tools=\"http://schemas.android.com/tools\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"match_parent\"
    android:orientation=\"vertical\"
    tools:context=\".QrCodeActivity\">
    <EditText
        android:layout_margin=\"20dp\"
        android:id=\"@+id/qr\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\" />
    <Button
        android:id=\"@+id/click\"
        android:layout_margin=\"20dp\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\"
        android:text=\"生成带logo二维码\"/>
    <Button
        android:id=\"@+id/no_logo\"
        android:layout_margin=\"20dp\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\"
        android:text=\"生成不带logo二维码\"/>
    <Button
        android:id=\"@+id/sm\"
        android:layout_margin=\"20dp\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\"
        android:text=\"扫描二维码\"/>
        <ImageView
            android:id=\"@+id/make_qr\"
            android:layout_gravity=\"center\"
            android:layout_width=\"100dp\"
            android:layout_height=\"100dp\"
            android:layout_margin=\"20dp\"/>

        <cn.bingoogolapple.qrcode.zxing.ZXingView
            android:id=\"@+id/zxing\"
            android:layout_width=\"wrap_content\"
            android:layout_height=\"wrap_content\"/>

</LinearLayout>

Activity

package com.example.day20rk;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

import cn.bingoogolapple.qrcode.core.BGAQRCodeUtil;
import cn.bingoogolapple.qrcode.core.QRCodeView;
import cn.bingoogolapple.qrcode.zxing.QRCodeEncoder;
import cn.bingoogolapple.qrcode.zxing.ZXingView;

// TODO: 2018/12/20
public class QrCodeActivity extends AppCompatActivity implements QRCodeView.Delegate {
private EditText qr;
private Button click;
private ImageView make_qr;
private Button sm;
private ZXingView zxing;
private Button no_logo;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_qr_code);
    qr = findViewById(R.id.qr);
    click = findViewById(R.id.click);
    make_qr = findViewById(R.id.make_qr);
    sm = findViewById(R.id.sm);
    zxing = findViewById(R.id.zxing);
    no_logo = findViewById(R.id.no_logo);
    sm.set Listener(new View. Listener() {
        @Override
        public void  (View v) {
            initZingView();
        }
    });
    click.set Listener(new View. Listener() {
        @Override
        public void  (View v) {
            onCreateQrCode();
        }
    });
    no_logo.set Listener(new View. Listener() {
        @Override
        public void  (View v) {
            new AsyncTask<String, Integer, Bitmap>() {
                @Override
                protected Bitmap doInBackground(String... strings) {
                    String QrContent = qr.getText().toString().trim();
                    return QRCodeEncoder.syncEncodeQRCode(QrContent,150);
                }

                @Override
                protected void onPostExecute(Bitmap bitmap) {
                    super.onPostExecute(bitmap);
                    make_qr.setImageBitmap(bitmap);
                }
            }.execute();
        }
    });

}

private void onCreateQrCode() {
    new AsyncTask<String, Integer, Bitmap>() {
        @Override
        protected Bitmap doInBackground(String... strings) {
            String QrContent = qr.getText().toString().trim();
            Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher);
            return QRCodeEncoder.syncEncodeQRCode(QrContent,BGAQRCodeUtil.dp2px(QrCodeActivity.this,150),Color.BLACK,bitmap);
        }

        @Override
        protected void onPostExecute(Bitmap bitmap) {
            super.onPostExecute(bitmap);
            if(bitmap!=null){
                make_qr.setImageBitmap(bitmap);
            }else {
                Toast.makeText(QrCodeActivity.this, \"生成二维码失败\", Toast.LENGTH_SHORT).show();
            }
        }
    }.execute();
}

@Override
protected void  () {
    super. ();

}

private void initZingView() {
    //设置扫描二维码的代理
    zxing.setDelegate(this);
    //显示扫描框
    zxing.showScanRect();
    //打开摄像头
    zxing.startCamera();
    //延迟delay毫秒后开始识别
    zxing.startSpotDelay(100);
}

@Override
protected void  () {
    super. ();
    zxing.stopCamera();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    zxing.onDestroy();
}

@Override
public void onScanQRCodeSuccess(String result) {

}

@Override
public void onCameraAmbientBrightnessChanged(boolean isDark) {

}

@Override
public void onScanQRCodeOpenCameraError() {

}

}