依赖

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

Application

public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        ZXingLibrary.initDisplayOpinion(this);
    }
}

生成二维码

/**
         * 生成二维码图片
         */
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String textContent = editText.getText().toString();
                if (TextUtils.isEmpty(textContent)) {
                    Toast.makeText(ThreeActivity.this, "您的输入为空!", Toast.LENGTH_SHORT).show();
                    return;
                }
                editText.setText("");
                mBitmap = CodeUtils.createImage(textContent, 400, 400, BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));
                imageView.setImageBitmap(mBitmap);
            }
        });

/**
         * 生成不带logo的二维码图片
         */
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String textContent = editText.getText().toString();
                if (TextUtils.isEmpty(textContent)) {
                    Toast.makeText(ThreeActivity.this, "您的输入为空!", Toast.LENGTH_SHORT).show();
                    return;
                }
                editText.setText("");
                mBitmap = CodeUtils.createImage(textContent, 400, 400, null);
                imageView.setImageBitmap(mBitmap);
            }
        });

扫一扫

//6.0动态申请
        if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){
            requestPermissions(new String[]{Manifest.permission.INTERNET,Manifest.permission.CAMERA},101);
        }
//申请权限
//        ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.INTERNET,Manifest.permission.CAMERA},101);
share.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
        startActivityForResult(intent,100);
    }
});

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == 100) {
        //处理扫描结果（在界面上显示）
        if (null != data) {
            Bundle bundle = data.getExtras();
            if (bundle == null) {
                return;
            }
            if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS) {
                String result = bundle.getString(CodeUtils.RESULT_STRING);
                Toast.makeText(this, "解析结果:" + result, Toast.LENGTH_LONG).show();
            } else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED) {
                Toast.makeText(MainActivity.this, "解析二维码失败", Toast.LENGTH_LONG).show();
            }
        }
    }
}

添加链接描述