android-animation

问题 I would like to get the background of the tab animated smoothly to the selected position (just like the default tabIndicator animates between tabs). Here is how my TabLayout looks like <android.support.design.widget.TabLayout android:layout_marginTop="10dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/tabLayout" app:tabBackground="@drawable/tab_selector" app:tabTextColor="@color/white" android:background="@drawable/tab_layout_bg" app

问题 I would like to get the background of the tab animated smoothly to the selected position (just like the default tabIndicator animates between tabs). Here is how my TabLayout looks like <android.support.design.widget.TabLayout android:layout_marginTop="10dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/tabLayout" app:tabBackground="@drawable/tab_selector" app:tabTextColor="@color/white" android:background="@drawable/tab_layout_bg" app

问题 My code Activity class SwipeHandlerActivity : AppCompatActivity(R.layout.activity_swipe_handler){ override fun onSaveInstanceState(outState: Bundle) { super.onSaveInstanceState(outState) outState.putBundle("Foo", findViewById<MotionLayout>(R.id.the_motion_layout).transitionState) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) savedInstanceState?.getBundle("Foo")?.let(findViewById<MotionLayout>(R.id.the_motion_layout)::setTransitionState) } } Layout <

问题 My code Activity class SwipeHandlerActivity : AppCompatActivity(R.layout.activity_swipe_handler){ override fun onSaveInstanceState(outState: Bundle) { super.onSaveInstanceState(outState) outState.putBundle("Foo", findViewById<MotionLayout>(R.id.the_motion_layout).transitionState) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) savedInstanceState?.getBundle("Foo")?.let(findViewById<MotionLayout>(R.id.the_motion_layout)::setTransitionState) } } Layout <

问题 I have a RecyclerView with items inside like this: I use ItemTouchHelper.SimpleCallback to listen for swipe and onChildDraw() to draw a canvas when items are swiped: A bit more swipe: My problem: I want to simulate a swipe (at run time) just on first item inside the list of items; I need first item to go (more or less ) -100 px on its X axis and then go back to original position. How to achieve this? 回答1: I created some utility method in case someone needs it import android.animation

问题 In my activity, with the touch of a button, I replace the current fragment with a new fragment using a custom animation, like in this example. @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { case R.id.action_anomalie: Fragment contentFragment = getFragmentManager().findFragmentById(R.id.content); if(contentFragment instanceof AnomalieListFragment) { getFragmentManager().popBackStack(); return true; } else {

问题 In my activity, with the touch of a button, I replace the current fragment with a new fragment using a custom animation, like in this example. @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { case R.id.action_anomalie: Fragment contentFragment = getFragmentManager().findFragmentById(R.id.content); if(contentFragment instanceof AnomalieListFragment) { getFragmentManager().popBackStack(); return true; } else {

问题 In my activity, with the touch of a button, I replace the current fragment with a new fragment using a custom animation, like in this example. @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { case R.id.action_anomalie: Fragment contentFragment = getFragmentManager().findFragmentById(R.id.content); if(contentFragment instanceof AnomalieListFragment) { getFragmentManager().popBackStack(); return true; } else {

问题 In my activity, with the touch of a button, I replace the current fragment with a new fragment using a custom animation, like in this example. @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { case R.id.action_anomalie: Fragment contentFragment = getFragmentManager().findFragmentById(R.id.content); if(contentFragment instanceof AnomalieListFragment) { getFragmentManager().popBackStack(); return true; } else {

问题 In my activity, with the touch of a button, I replace the current fragment with a new fragment using a custom animation, like in this example. @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { case R.id.action_anomalie: Fragment contentFragment = getFragmentManager().findFragmentById(R.id.content); if(contentFragment instanceof AnomalieListFragment) { getFragmentManager().popBackStack(); return true; } else {