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Added a slide in and out animation to FAB when scrolling

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This commit is contained in:
Darron Lumley 2015-12-18 21:21:05 +11:00
parent 2bc41dc520
commit 08fced059c
3 changed files with 66 additions and 5 deletions
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4
Habitica/res/anim/fab_slide_in.xml Normal file
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@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="100%" android:toYDelta="0%"/>
</set>

4
Habitica/res/anim/fab_slide_out.xml Normal file
View file

@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="0%" android:toYDelta="100%"/>
</set>

63
Habitica/src/com/habitrpg/android/habitica/ui/helpers/FloatingActionMenuBehavior.java
View file

@ -9,16 +9,29 @@ import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPropertyAnimatorListener;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import com.github.clans.fab.FloatingActionMenu;
import com.habitrpg.android.habitica.R;
import java.util.List;
public class FloatingActionMenuBehavior extends CoordinatorLayout.Behavior {
private final int FAB_ANIMATION_DURATION = 500;
private float mTranslationY;
private Context context;
private boolean isAnimating;
private boolean isOffScreen;
public FloatingActionMenuBehavior(Context context, AttributeSet attrs) {
super();
this.context = context;
isAnimating = false;
isOffScreen = false;
}
@Override
@ -75,13 +88,53 @@ public class FloatingActionMenuBehavior extends CoordinatorLayout.Behavior {
}
@Override
public void onNestedScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
public void onNestedScroll(CoordinatorLayout coordinatorLayout, final View child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
if (dyConsumed > 20 && child.getVisibility() == View.VISIBLE) {
child.setVisibility(View.INVISIBLE);
} else if (dyConsumed < -20 && child.getVisibility() != View.VISIBLE) {
child.setVisibility(View.VISIBLE);
/*
Logic:
- If we're scrolling downwards or we're at the bottom of the screen
AND if we're not animating and not on screen > HIDE
*/
if ((dyConsumed > 20 || (dyConsumed == 0 && dyUnconsumed > 0)) && !isAnimating && !isOffScreen) {
isAnimating = true;
slideFabOffScreen(child);
resetAnimatingStatusWithDelay(child);
isOffScreen = true;
/*
Logic:
- If we're not on screen
AND we're scrolling upwards and not animating OR we're at the top of the screen > SHOW
*/
} else if (isOffScreen && ((dyConsumed < -10 && !isAnimating) || dyUnconsumed < 0)) {
isAnimating = true;
slideFabOnScreen(child);
resetAnimatingStatusWithDelay(child);
isOffScreen = false;
}
}
private void resetAnimatingStatusWithDelay(View child) {
child.postDelayed(new Runnable() {
@Override
public void run() {
isAnimating = false;
}
}, FAB_ANIMATION_DURATION);
}
private void slideFabOffScreen(View view){
Animation slideOff = AnimationUtils.loadAnimation(context, R.anim.fab_slide_out);
slideOff.setDuration(FAB_ANIMATION_DURATION);
slideOff.setFillAfter(true);
view.startAnimation(slideOff);
}
private void slideFabOnScreen(View view){
Animation slideIn = AnimationUtils.loadAnimation(context, R.anim.fab_slide_in);
slideIn.setDuration(FAB_ANIMATION_DURATION);
slideIn.setFillAfter(true);
view.startAnimation(slideIn);
}
}