android mvvm databinding在activity中的使用

在自己写的几个项目中，mvvm相比其他（mvc,mvp）框架，个人觉得对于前期编码，以及后期的迭代开发，维护都是比较方便的。将原本繁琐的逻辑处理功能交给了viewmodel层来实现，通过model层可以使用databinding实现页面数据的绑定，findviewById一去不复返了，而且对于点击onclick事件，onCheckedchange等事件不用去实现相关listener相关接口，直接通过布局绑定实现。

MainViewModel

public class MainViewModel {
    private ActivityMainBinding activityMainBinding;
    private BaseActivity baseActivity;
    private String[] authType={"密码","人脸"};

    public MainViewModel(ActivityMainBinding activityMainBinding, BaseActivity baseActivity) {
        this.activityMainBinding = activityMainBinding;
        this.baseActivity = baseActivity;
        activityMainBinding.setMainViewModel(this);
        activityMainBinding.tvCurrentuser.setText(AppManager.getInstance().getUserModel().userName);
    }

    public void onDestroy() {

    }

    public void finish(View view){
        baseActivity.finish();
    }

    public void intentUserManage(View view){
       // chooseCheckType(4);
        Intent intent=new Intent(baseActivity, UserManageActivity.class);
        baseActivity.startActivity(intent);
    }

    public void intentRecord(View view){
        Intent intent=new Intent(baseActivity, RecordActivity.class);
        baseActivity.startActivity(intent);
    }

    public void intentDeviceManage(View view){
        Intent intent=new Intent(baseActivity, DeviceManageActivity.class);
        baseActivity.startActivity(intent);
    }

    public void intentSetting(View view){
        Intent intent=new Intent(baseActivity, SettingActivity.class);
        baseActivity.startActivity(intent);
    }

    public void intentAllAuth(View view){
        Intent intent=new Intent(baseActivity, AllAuthActivity.class);
        baseActivity.startActivity(intent);
    }

    public void intentPartAuth(View view){
        Intent intent=new Intent(baseActivity, PartAuthActivity.class);
        baseActivity.startActivity(intent);
    }

    private void chooseCheckType(int flag){
        AlertDialog.Builder builder=new AlertDialog.Builder(baseActivity);
        builder.setTitle("选择验证方式")
                .setItems(authType, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        switch (which){
                            case 0:
                                Intent intent=new Intent(baseActivity, LoginByPwdActivity.class);
                                intent.putExtra("flag",flag);
                                baseActivity.startActivity(intent);
                                break;
                            case 1:
                                Intent intent1=new Intent(baseActivity, VerifyActivity.class);
                                intent1.putExtra("flag",flag);
                                baseActivity.startActivity(intent1);
                                break;
                        }
                    }
                });
        builder.show();
    }

    public void receiveEvent() {

    }
}

MainActivity

public class MainActivity extends BaseActivity {
    private ActivityMainBinding activityMainBinding;
    private MainViewModel mainViewModel;

    @Override
    protected void onCreate( Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        activityMainBinding= DataBindingUtil.setContentView(this, R.layout.activity_main);
        mainViewModel=new MainViewModel(activityMainBinding,this);
    }

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

    @Override
    protected void receiveEvent(MessageEvent event) {
        super.receiveEvent(event);
        mainViewModel.receiveEvent();
    }
}