How do I get animation in Android?
Actually I have Linear Layout
one which matchParent
(in width
and height
) and now I need to create another one layout
(below this linearLayout
) which should not be visible initially,
And when my work starts, I want to bring this hidden layout to life.
The hidden one layout
should be from bottom to top. I don't know how to achieve this animation? I don't know how to create a layout that shouldn't be visible initially, and after a delay, it should show from the bottom of the screen and sideways.
here is my xml file code
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/imageupLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="@+id/imgview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/logo" />
</LinearLayout>
<LinearLayout
android:id="@+id/hided_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#56a24b"
android:orientation="vertical"
android:visibility="visible" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="15dip"
android:background="@drawable/btn_bg"
android:gravity="center" >
<Button
android:id="@+id/btn_login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="2dip"
android:background="@drawable/btn_login" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dip"
android:background="@drawable/btn_bg"
android:gravity="center" >
<Button
android:id="@+id/btn_register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="2dip"
android:background="@drawable/btn_register" />
</LinearLayout>
<TextView
android:id="@+id/tv_just_explore"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dip"
android:layout_marginTop="20dip"
android:gravity="center"
android:text="JUST EXPLORE"
android:textColor="#FFFFFF"
android:textSize="15dip"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
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Yes, I did it. Here is my code, maybe it helps others ...
In my MainActivity.
public class MainActivity extends ActionBarActivity {
private View hiddenPanel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
hiddenPanel = findViewById(R.id.hidden_panel);
}
public void slideUpDown(final View view) {
if (!isPanelShown()) {
// Show the panel
Animation bottomUp = AnimationUtils.loadAnimation(this,
R.anim.bottom_up);
hiddenPanel.startAnimation(bottomUp);
hiddenPanel.setVisibility(View.VISIBLE);
}
else {
// Hide the Panel
Animation bottomDown = AnimationUtils.loadAnimation(this,
R.anim.bottom_down);
hiddenPanel.startAnimation(bottomDown);
hiddenPanel.setVisibility(View.GONE);
}
}
private boolean isPanelShown() {
return hiddenPanel.getVisibility() == View.VISIBLE;
}
}
In my activity_main
<?xml version="1.0" encoding="utf-8"?>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="@string/hello_world" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="@string/hello_world" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:onClick="slideUpDown"
android:text="Slide up / down" />
<RelativeLayout
android:id="@+id/hidden_panel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:visibility="gone" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/app_name"
android:layout_centerInParent="true"
android:onClick="slideUpDown" />
</RelativeLayout>
bottom_down.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromYDelta="0%p"
android:toYDelta="100%p"
android:fillAfter="true"
android:interpolator="@android:anim/linear_interpolator"
android:duration="500" />
</set>
bottom_up.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromYDelta="75%p"
android:toYDelta="0%p"
android:fillAfter="true"
android:duration="500" />
</set>
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You haven't specified which layout in the code you want to hide, and bring a different layout. But I will give you a generic code that you can apply. First for the layout you want to hide initially, set android:visibility = "gone"
and in your activity during animation below
layoutYouHideInitially.setVisibility(View.VISIBLE);
layoutYouHideInitially.animate().alpha(1).setDuration(500);
layoutYouWannaHide.setVisibility(View.GONE);
layoutYouWannaHide.animate().alpha(0).setDuration(500);
Between visibility setting GONE
or INVISIBLE
it is up to you based on usage. And for animation, you have other options that you can explore instead of alpha
, for example translationX
, scaleX
etc. Please comment if you get stuck with any issue. I am glad to help!
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