InstaMaterial source files

btn_feed_action.xml

<?xml version="1.0" encoding="utf-8"?>
<!--drawable/btn_feed_action.xml-->
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:enterFadeDuration="200" android:exitFadeDuration="200">
    <item android:state_pressed="false">
        <shape android:shape="oval">
            <solid android:color="@android:color/transparent" />
        </shape>
    </item>
    <item android:state_pressed="true">
        <shape android:shape="oval">
            <solid android:color="#6621425d" />
        </shape>
    </item>
</selector>

btn_feed_action_v21.xml

<?xml version="1.0" encoding="utf-8"?>
<!--drawable-v21/btn_feed_action.xml-->
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?attr/colorPrimaryDark" />

btn_send_comment.xml

<?xml version="1.0" encoding="utf-8"?>
<!--drawable/btn_send_comment.xml-->
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false">
        <layer-list>
            <item android:bottom="0dp" android:left="2dp" android:right="0dp" android:top="2dp">
                <shape android:shape="rectangle">
                    <solid android:color="@color/fab_color_shadow" />
                    <corners android:radius="2dp" />
                </shape>
            </item>

            <item android:bottom="1dp" android:left="1dp" android:right="1dp" android:top="1dp">
                <shape android:shape="rectangle">
                    <solid android:color="@color/btn_send_normal" />
                    <corners android:radius="2dp" />
                </shape>
            </item>
        </layer-list>
    </item>
    <item android:state_pressed="true">
        <shape android:bottom="0dp" android:left="2dp" android:right="0dp" android:shape="rectangle" android:top="2dp">
            <solid android:color="@color/btn_send_pressed" />
            <corners android:radius="2dp" />
        </shape>
    </item>

</selector>

btn_send_comment_v21.xml

<?xml version="1.0" encoding="utf-8"?>
<!--drawable-v21/btn_send_comment.xml-->
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="#ffffff">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/btn_send_normal" />
        </shape>
    </item>
</ripple>

cycle_2.xml

<?xml version="1.0" encoding="utf-8"?>
<cycleInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
                   android:cycles="2"/>

item_feed.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- item_feed.xml -->
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android">

        <!--...-->
        
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingLeft="8dp"
            android:paddingRight="8dp">

            <ImageButton
                android:id="@+id/btnLike"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@drawable/btn_feed_action"
                android:src="@drawable/ic_heart_outline_grey" />

            <ImageButton
                android:id="@+id/btnComments"
                android:layout_width="48dp"
                android:layout_height="48dp"
                android:background="@drawable/btn_feed_action"
                android:src="@drawable/ic_comment_outline_grey" />
        </LinearLayout>

        <!--...-->
        
</android.support.v7.widget.CardView>

MainActivity_extra_layout_space.java

public class MainActivity extends ActionBarActivity implements FeedAdapter.OnFeedItemClickListener {
   
    //...

    private void setupFeed() {
        //Increase the amount of extra space that should be laid out by LayoutManager.
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this) {
            @Override
            protected int getExtraLayoutSpace(RecyclerView.State state) {
                return 300;
            }
        };
        rvFeed.setLayoutManager(linearLayoutManager);

        //...
    }

    //...
}

SendCommentButton.java

public class SendCommentButton extends ViewAnimator implements View.OnClickListener {
    public static final int STATE_SEND = 0;
    public static final int STATE_DONE = 1;

    private static final long RESET_STATE_DELAY_MILLIS = 2000;

    private int currentState;

    private OnSendClickListener onSendClickListener;

    private Runnable revertStateRunnable = new Runnable() {
        @Override
        public void run() {
            setCurrentState(STATE_SEND);
        }
    };

    public SendCommentButton(Context context) {
        super(context);
        init();
    }

    public SendCommentButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    private void init() {
        LayoutInflater.from(getContext()).inflate(R.layout.view_send_comment_button, this, true);
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        currentState = STATE_SEND;
        super.setOnClickListener(this);
    }

    @Override
    protected void onDetachedFromWindow() {
        removeCallbacks(revertStateRunnable);
        super.onDetachedFromWindow();
    }

    public void setCurrentState(int state) {
        if (state == currentState) {
            return;
        }

        currentState = state;
        if (state == STATE_DONE) {
            setEnabled(false);
            postDelayed(revertStateRunnable, RESET_STATE_DELAY_MILLIS);
            setInAnimation(getContext(), R.anim.slide_in_done);
            setOutAnimation(getContext(), R.anim.slide_out_send);
        } else if (state == STATE_SEND) {
            setEnabled(true);
            setInAnimation(getContext(), R.anim.slide_in_send);
            setOutAnimation(getContext(), R.anim.slide_out_done);
        }
        showNext();
    }

    @Override
    public void onClick(View v) {
        if (onSendClickListener != null) {
            onSendClickListener.onSendClickListener(this);
        }
    }

    public void setOnSendClickListener(OnSendClickListener onSendClickListener) {
        this.onSendClickListener = onSendClickListener;
    }

    @Override
    public void setOnClickListener(OnClickListener l) {
        //Do nothing, you have you own onClickListener implementation (OnSendClickListener)
    }

    public interface OnSendClickListener {
        public void onSendClickListener(View v);
    }
}

shake_error.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="300"
    android:fromXDelta="0%"
    android:interpolator="@anim/cycle_2"
    android:toXDelta="2%" />

slide_in_done.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="100"
    android:fromYDelta="80%p"
    android:interpolator="@android:anim/linear_interpolator"
    android:toYDelta="0" />

slide_in_send.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="100"
    android:fromYDelta="-80%p"
    android:interpolator="@android:anim/linear_interpolator"
    android:toYDelta="0" />

slide_out_done.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="100"
    android:fromYDelta="0"
    android:interpolator="@android:anim/linear_interpolator"
    android:toYDelta="80%p" />

slide_out_send.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="100"
    android:fromYDelta="0"
    android:interpolator="@android:anim/linear_interpolator"
    android:toYDelta="-80%p" />

view_send_comment_button.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">

    <TextView
        android:id="@+id/tvSend"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="SEND"
        android:textColor="#ffffff"
        android:textSize="12sp" />

    <TextView
        android:id="@+id/tvDone"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="✓"
        android:textColor="#ffffff"
        android:textSize="12sp" />
</merge>