Reveal Color View Demo

activity_my.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="3">

        <at.markushi.ui.RevealColorView
            android:id="@+id/reveal"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#212121"/>

        <TextView
            android:id="@+id/title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
            android:layout_marginBottom="64dip"
            android:fontFamily="sans-serif-light"
            android:paddingBottom="16dip"
            android:paddingLeft="72dip"
            android:text="Reveal Color Demo"
            android:textColor="#DDFFFFFF"
            android:textSize="36sp"/>


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="56dip"
            android:layout_gravity="bottom"
            android:orientation="horizontal"
            android:layout_marginBottom="8dip"
            android:paddingLeft="72dip"
            android:paddingRight="16dip">

            <Button
                android:id="@+id/btn_1"
                android:layout_width="0dip"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@drawable/selectable_item_selector"
                android:tag="#8bc34a"
                android:layout_marginRight="8dip"
                android:text="1"
                android:textColor="@android:color/white"/>

            <Button
                android:id="@+id/btn_2"
                android:layout_width="0dip"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@drawable/selectable_item_selector"
                android:tag="#3f51b5"
                android:layout_marginRight="8dip"
                android:text="2"
                android:textColor="@android:color/white"/>

            <Button
                android:id="@+id/btn_3"
                android:layout_width="0dip"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@drawable/selectable_item_selector"
                android:tag="#00bcd4"
                android:text="3"
                android:layout_marginRight="8dip"
                android:textColor="@android:color/white"/>

            <Button
                android:id="@+id/btn_4"
                android:layout_width="0dip"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@drawable/selectable_item_selector"
                android:tag="#e91e63"
                android:text="4"
                android:textColor="@android:color/white"/>
        </LinearLayout>


    </FrameLayout>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="3"
        android:paddingLeft="72dip"
        android:text="A simple demo on how to use reveal color view."
        android:paddingTop="16dip"/>

</LinearLayout>

MyActivity.java

package at.markushi.reveal;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.Point;
import android.os.Bundle;
import android.view.View;

import at.markushi.ui.RevealColorView;

public class MyActivity extends Activity implements View.OnClickListener {

	private RevealColorView revealColorView;
	private View selectedView;
	private int backgroundColor;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_my);

		revealColorView = (RevealColorView) findViewById(R.id.reveal);
		backgroundColor = Color.parseColor("#212121");

		findViewById(R.id.btn_1).setOnClickListener(this);
		findViewById(R.id.btn_2).setOnClickListener(this);
		findViewById(R.id.btn_3).setOnClickListener(this);
		findViewById(R.id.btn_4).setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		final int color = getColor(v);
		final Point p = getLocationInView(revealColorView, v);

		if (selectedView == v) {
			revealColorView.hide(p.x, p.y, backgroundColor, 0, 300, null);
			selectedView = null;
		} else {
			revealColorView.reveal(p.x, p.y, color, v.getHeight() / 2, 340, null);
			selectedView = v;
		}
	}

	private Point getLocationInView(View src, View target) {
		final int[] l0 = new int[2];
		src.getLocationOnScreen(l0);

		final int[] l1 = new int[2];
		target.getLocationOnScreen(l1);

		l1[0] = l1[0] - l0[0] + target.getWidth() / 2;
		l1[1] = l1[1] - l0[1] + target.getHeight() / 2;

		return new Point(l1[0], l1[1]);
	}

	private int getColor(View view) {
		return Color.parseColor((String) view.getTag());
	}
}

good

好的

nice