animation 与更改活动的布局

Question

What I want, when I click on the login button of the first activity the yellow part slides down and the next activity opens. when I click on the signup button of the second screen(login screen) the yellow part of the second screen slides up and the first activity (sign up Activity)opens. I have used slide-down animation on the linear layout on the first screen it works but not working smoothly. Any help??

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_signup);
        mSignUpButton = findViewById(R.id.btnSigUp);
        linearLayout=findViewById(R.id.linearLayout1);
        mGotoLoginActivityButton=findViewById(R.id.btnLoginSignUpActivity);
        slideDown= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.slide_down);

      
//listener for Login button
        mGotoLoginActivityButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                //setValidation();

                Intent intent = new Intent(SignupActivity.this, LoginActivity.class);
                startActivity(intent);
                linearLayout.startAnimation(slideDown);

            }
        });
    }

Answer 1

you shouldn't use two separated Activities for this purpose, use one and login and create account views should be packed into Fragment s. this way will be way easier to animate between two views/fragments in on Activity , but if you really must use Activity then use Transitions (probably with shared elements), not animations, as these are working in one Activity during its runtime when visible (and you are currently running new Activity , which cover old one)