简单实现二维码

1.导依赖

 //导依赖
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.github.yuzhiqiang1993:zxing:2.2.5'

maven { url 'https://jitpack.io' }

版本不一致 应对

//添加权限
   compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

2.布局内添加按钮控件 b1，b2

		//扫码 跳转
		b1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivityForResult(new Intent(MainActivity.this, CaptureActivity.class),101);
            }
        });
        //生成二维码
        b2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                img.setImageBitmap(CodeCreator.createQRCode("啊这",200,200,null)); //生成
            }
        });

2.1所在Activity onActivityResult方法中

@Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
       
        if (requestCode==101&&data!=null){
            String stringExtra = data.getStringExtra(Constant.CODED_CONTENT);
            Toast.makeText(this, stringExtra.toString(), Toast.LENGTH_SHORT).show();
        }
    }