Zxing扫描二维码的简单实现

1. 先导入依赖
2. 添加动态权限
3. application注册
   生成二维码

//导入依赖

 implementation 'cn.yipianfengye.android:zxing-library:2.2'  //Zxing依赖

//权限

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.VIBRATE" />

//application注册
//在manifests也要注册

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

//添加动态权限

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.VIBRATE,
                    Manifest.permission.CAMERA}, 102);
        }

//代码实现

   Intent intent = new Intent(Main2Activity.this, CaptureActivity.class);
        startActivityForResult(intent, 102);

//onActivityResult回调

  @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
       if (requestCode == 101 && resultCode == Activity.RESULT_OK) {
            if (data != null) {
                Bundle bundle = data.getExtras();
                if (bundle != null) {
                    int result_type = bundle.getInt(CodeUtils.RESULT_TYPE);
                    if (result_type== CodeUtils.RESULT_SUCCESS) {
                        String result_Str = bundle.getString(CodeUtils.RESULT_STRING);
                        Toast.makeText(this, "" + result_Str, Toast.LENGTH_SHORT).show();
                    }
                }
            }
        }
    }