I have a menu item with an icon (imagine for example a clock with a single lancet), I would like to make its icon rotate indefinitely.
How could I manage this effect? Thank you.
4
- You can use Indeterminate progress bar : developer.android.com/reference/android/widget/…shivamDev31– shivamDev312015-03-03 19:59:21 +00:00Commented Mar 3, 2015 at 19:59
- Can I use it also to make a custom icon rotate?madx– madx2015-03-03 20:00:20 +00:00Commented Mar 3, 2015 at 20:00
- Ohh you want to rotate custom icon... I think you can... let me check if I get something for youshivamDev31– shivamDev312015-03-03 20:02:13 +00:00Commented Mar 3, 2015 at 20:02
- I think this will work : stackoverflow.com/questions/9162481/… not sure though so there is no harm in trying.shivamDev31– shivamDev312015-03-03 20:05:33 +00:00Commented Mar 3, 2015 at 20:05
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2 Answers
Add a file res/layout/iv_refresh.xml (replace ic_launcher with your custom icon):
<?xml version="1.0" encoding="utf-8"?> <ImageView xmlns:android="http://schemas.android.com/apk/res/android" style="@android:style/Widget.ActionButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/app_name" android:src="@drawable/ic_launcher" /> Add a file res/anim/rotate_refresh.xml:
<?xml version="1.0" encoding="utf-8"?> <rotate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fromDegrees="0" android:interpolator="@android:anim/linear_interpolator" android:pivotX="50%" android:pivotY="50%" android:toDegrees="360"> </rotate> Finally in your java code you can start the animation like this:
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); ImageView iv = (ImageView)inflater.inflate(R.layout.iv_refresh, null); Animation rotation = AnimationUtils.loadAnimation(this, R.anim.rotate_refresh); rotation.setRepeatCount(Animation.INFINITE); iv.startAnimation(rotation); menu.findItem(R.id.my_menu_item_id).setActionView(iv); 13 Comments
Apurva
But how to set this for menu item?
Jesson Atherton
Get your view and assign the animation
Jesson Atherton
stackoverflow.com/questions/8614293/… this may be of use
madx
I tried with this:
((View)menu.findItem(R.id.my_menu_item_id)).startAnimation(mAnimation); but I got this: java.lang.ClassCastException: android.support.v7.internal.view.menu.m cannot be cast to android.view.Viewmadx
Could you provide an example where you show how to do this?
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the best way is here:
public class HomeActivity extends AppCompatActivity { public static ActionMenuItemView btsync; public static RotateAnimation rotateAnimation; @Override protected void onCreate(Bundle savedInstanceState) { rotateAnimation = new RotateAnimation(360, 0, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); rotateAnimation.setDuration((long) 2*500); rotateAnimation.setRepeatCount(Animation.INFINITE); and then:
private void sync() { btsync = this.findViewById(R.id.action_sync); //remember that u cant access this view at onCreate() or onStart() or onResume() or onPostResume() or onPostCreate() or onCreateOptionsMenu() or onPrepareOptionsMenu() if (isSyncServiceRunning(HomeActivity.this)) { showConfirmStopDialog(); } else { if (btsync != null) { btsync.startAnimation(rotateAnimation); } Context context = getApplicationContext(); context.startService(new Intent(context, SyncService.class)); } } Remember that u cant access "btsync = this.findViewById(R.id.action_sync);" at onCreate() or onStart() or onResume() or onPostResume() or onPostCreate() or onCreateOptionsMenu() or onPrepareOptionsMenu() if u want get it just after activity start put it in a postdelayed:
public static void refreshSync(Activity context) { Handler handler = new Handler(Looper.getMainLooper()); handler.postDelayed(new Runnable() { public void run() { btsync = context.findViewById(R.id.action_sync); if (btsync != null && isSyncServiceRunning(context)) { btsync.startAnimation(rotateAnimation); } else if (btsync != null) { btsync.clearAnimation(); } } }, 1000); } 