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_8targetCompatibility 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() {@Overridepublic void onClick(View v) {startActivityForResult(new Intent(MainActivity.this, CaptureActivity.class),101);}});//生成二维码b2.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {img.setImageBitmap(CodeCreator.createQRCode("啊这",200,200,null)); //生成}});

2.1所在Activity onActivityResult方法中

@Overrideprotected 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();}}