Monday, August 3, 2015

Example to create Animator of CircularReveal

A example to create Animator of CircularReveal, demo on TextView and ImageView.


package com.example.eric.androidcircularreveal;

import android.animation.Animator;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewAnimationUtils;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {

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

        TextView textView = (TextView)findViewById(R.id.textView);
        ImageView imageView1 = (ImageView) findViewById(R.id.imageView1);
        ImageView imageView2 = (ImageView) findViewById(R.id.imageView2);

        textView.setOnClickListener(viewOnClickListener);
        imageView1.setOnClickListener(viewOnClickListener);
        imageView2.setOnClickListener(viewOnClickListener);
    }

    /*
    Animator createCircularReveal(View view, int centerX,
    int centerY, float startRadius, float endRadius)
    */
    View.OnClickListener viewOnClickListener = new View.OnClickListener(){
        @Override
        public void onClick(View v) {

            Animator animatorCircularReveal = ViewAnimationUtils.createCircularReveal(
                    v,
                    0,
                    0,
                    0,
                    (float) Math.hypot(v.getWidth(), v.getHeight()));
            animatorCircularReveal.setInterpolator(new AccelerateDecelerateInterpolator());

            animatorCircularReveal.start();

        }
    };

}


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textStyle="bold"
        android:textSize="30dp"
        android:text="Animator CircularReveal example" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher" />
    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center_horizontal"
        android:src="@mipmap/ic_launcher" />

</LinearLayout>