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Code Issues Projects Releases Packages Wiki Activity Actions

Show/Hide action button depending on scroll direction

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This commit is contained in:
Michael Schättgen 2019-03-26 00:53:32 +01:00
parent cebf15ba44
commit a5778e6b38
2 changed files with 57 additions and 0 deletions
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43
app/src/main/java/com/beemdevelopment/aegis/ui/MainActivity.java
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@ -1,6 +1,8 @@
package com.beemdevelopment.aegis.ui;
import android.Manifest;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;
@ -12,6 +14,9 @@ import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.SubMenu;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.LinearLayout;
import android.widget.Toast;
@ -31,6 +36,9 @@ import com.beemdevelopment.aegis.db.DatabaseManagerException;
import com.beemdevelopment.aegis.db.DatabaseEntry;
import com.beemdevelopment.aegis.db.DatabaseManager;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.interpolator.view.animation.FastOutSlowInInterpolator;
public class MainActivity extends AegisActivity implements EntryListView.Listener {
// activity request codes
private static final int CODE_SCAN = 0;
@ -499,4 +507,39 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
public void onEntryChange(DatabaseEntry entry) {
saveDatabase();
}
private boolean isAnimating;
@Override
public void onScroll(int dx, int dy) {
if (dy > 0 && _fabMenu.getVisibility() == View.VISIBLE && !isAnimating) {
isAnimating = true;
CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) _fabMenu.getLayoutParams();
int fabBottomMargin = lp.bottomMargin;
_fabMenu.animate()
.translationY(_fabMenu.getHeight() + fabBottomMargin)
.setInterpolator(new AccelerateInterpolator(2))
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
isAnimating = false;
_fabMenu.setVisibility(View.INVISIBLE);
super.onAnimationEnd(animation);
}
}).start();
}
else if (dy < 0 && _fabMenu.getVisibility() != View.VISIBLE && !isAnimating) {
_fabMenu.setVisibility(View.VISIBLE);
_fabMenu.animate()
.translationY(0)
.setInterpolator(new DecelerateInterpolator(2))
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
isAnimating = false;
super.onAnimationEnd(animation);
}
}).start();
}
}
}