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Code Issues Releases Wiki Activity

Blend out bottom bar

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vanitasvitae 2016-06-21 16:18:19 +02:00
parent f7f72a404b
commit 9e5b2b1235
2 changed files with 105 additions and 1 deletions
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102
app/src/main/java/com/github/dfa/diaspora_android/ui/BottomBarBehavior.java Normal file
View file

@ -0,0 +1,102 @@
package com.github.dfa.diaspora_android.ui;
import android.content.Context;
import android.os.Build;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPropertyAnimatorListener;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.LinearLayout;
import com.github.dfa.diaspora_android.R;
/**
* Created by vanitas on 21.06.16.
*/
public class BottomBarBehavior extends CoordinatorLayout.Behavior<LinearLayout> {
private static final FastOutSlowInInterpolator INTERPOLATOR = new FastOutSlowInInterpolator();
private boolean mIsAnimatingOut = false;
public BottomBarBehavior(Context context, AttributeSet attrs) {
super();
}
@Override
public boolean onStartNestedScroll(final CoordinatorLayout coordinatorLayout, final LinearLayout child,
final View directTargetChild, final View target, final int nestedScrollAxes) {
return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
|| super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
}
@Override
public void onNestedScroll(final CoordinatorLayout coordinatorLayout, final LinearLayout child,
final View target, final int dxConsumed, final int dyConsumed,
final int dxUnconsumed, final int dyUnconsumed) {
super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
if (dyConsumed < 0 && !this.mIsAnimatingOut && child.getVisibility() == View.VISIBLE) {
// User scrolled down and the FAB is currently visible -> hide the FAB
animateOut(child);
} else if (dyConsumed > 0 && child.getVisibility() != View.VISIBLE) {
// User scrolled up and the FAB is currently not visible -> show the FAB
animateIn(child);
}
}
private void animateOut(final LinearLayout linearLayout) {
if (Build.VERSION.SDK_INT >= 14) {
ViewCompat.animate(linearLayout).translationY(168F).alpha(0.0F).setInterpolator(INTERPOLATOR).withLayer()
.setListener(new ViewPropertyAnimatorListener() {
public void onAnimationStart(View view) {
BottomBarBehavior.this.mIsAnimatingOut = true;
}
public void onAnimationCancel(View view) {
BottomBarBehavior.this.mIsAnimatingOut = false;
}
public void onAnimationEnd(View view) {
BottomBarBehavior.this.mIsAnimatingOut = false;
view.setVisibility(View.GONE);
}
}).start();
} else {
Animation anim = AnimationUtils.loadAnimation(linearLayout.getContext(), R.anim.bottom_bar_up);
anim.setInterpolator(INTERPOLATOR);
anim.setDuration(200L);
anim.setAnimationListener(new Animation.AnimationListener() {
public void onAnimationStart(Animation animation) {
BottomBarBehavior.this.mIsAnimatingOut = true;
}
public void onAnimationEnd(Animation animation) {
BottomBarBehavior.this.mIsAnimatingOut = false;
linearLayout.setVisibility(View.GONE);
}
@Override
public void onAnimationRepeat(final Animation animation) {
}
});
linearLayout.startAnimation(anim);
}
}
private void animateIn(LinearLayout linearLayout) {
linearLayout.setVisibility(View.VISIBLE);
if (Build.VERSION.SDK_INT >= 14) {
ViewCompat.animate(linearLayout).translationY(0).scaleX(1.0F).scaleY(1.0F).alpha(1.0F)
.setInterpolator(INTERPOLATOR).withLayer().setListener(null)
.start();
} else {
Animation anim = AnimationUtils.loadAnimation(linearLayout.getContext(), R.anim.bottom_bar_down);
anim.setDuration(200L);
anim.setInterpolator(INTERPOLATOR);
linearLayout.startAnimation(anim);
}
}
}

4
app/src/main/res/layout/main__app_bar.xml
View file

@ -42,13 +42,15 @@
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:theme="@style/AppTheme.AppBarOverlay">
android:theme="@style/AppTheme.AppBarOverlay"
app:layout_behavior=".ui.BottomBarBehavior">
<android.support.v7.widget.ActionMenuView
android:id="@+id/toolbar2"
android:layout_width="match_parent"
android:layout_height="45dp"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|snap"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>