TestPropertyAnimationActivity.java

package com.google.mcommerce.sample.android.chapter13.property;

import android.animation.AnimatorInflater;
import android.animation.AnimatorSet;
import android.animation.Keyframe;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.app.Activity;
import android.graphics.PointF;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewPropertyAnimator;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.widget.Button;
import android.widget.TextView;

import com.google.mcommerce.sample.android.R;

public class TestPropertyAnimationActivity extends Activity {
	private static String tag = "My activity";
	private TextView m_tv = null;
	private MyAnimatableView m_atv = null;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.c13_property_main);
		gatherControls();
	}

	private void gatherControls() {
		m_tv = (TextView) this.findViewById(R.id.tv_id);
		m_atv = new MyAnimatableView(m_tv);
	}

	public void toggleAnimation(View btnView) {
		Button tButton = (Button) btnView;
		if (m_tv.getAlpha() != 0) {
			ObjectAnimator fadeOut = ObjectAnimator.ofFloat(m_tv, "alpha", 0f);
			fadeOut.setDuration(5000);
			fadeOut.start();
			tButton.setText("Fade In");
		} else {
			ObjectAnimator fadeIn = ObjectAnimator.ofFloat(m_tv, "alpha", 1f);
			fadeIn.setDuration(5000);
			fadeIn.start();
			tButton.setText("Fade out");
		}
	}

	public void sequentialAnimation(View bView) {
		m_tv.setAlpha(1f);
		ObjectAnimator fadeOut = ObjectAnimator.ofFloat(m_tv, "alpha", 0f);
		ObjectAnimator fadeIn = ObjectAnimator.ofFloat(m_tv, "alpha", 1f);
		AnimatorSet as = new AnimatorSet();
		as.playSequentially(fadeOut, fadeIn);
		as.setDuration(5000); // 5 secs
		as.start();
	}

	public void sequentialAnimationXML(View bView) {
		m_tv.setAlpha(1f);
		AnimatorSet set = (AnimatorSet) AnimatorInflater.loadAnimator(this,
				R.animator.fadein);
		set.setTarget(m_tv);
		set.start();
	}

	public void testAnimationBuilder(View v) {
		m_tv.setAlpha(1f);
		ObjectAnimator fadeOut = ObjectAnimator.ofFloat(m_tv, "alpha", 0f);
		ObjectAnimator fadeIn = ObjectAnimator.ofFloat(m_tv, "alpha", 1f);
		AnimatorSet as = new AnimatorSet();
		as.play(fadeOut).before(fadeIn);
		as.setDuration(2000); // 2 secs
		as.start();
	}

	public void testPropertiesHolder(View v) {
		m_tv.setAlpha(1f);
		float h = m_tv.getHeight();
		float w = m_tv.getWidth();
		float x = m_tv.getX();
		float y = m_tv.getY();

		m_tv.setX(w);
		m_tv.setY(h);
		// Go to 50 on x
		PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("x", x);

		// Go to 100 on y
		PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat("y", y);

		ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(m_tv, pvhX,
				pvhY);
		oa.setDuration(5000); // 2 secs
		oa.setInterpolator(new AccelerateDecelerateInterpolator());
		oa.start();
	}

	public void testViewAnimator(View v) {
		m_tv.setAlpha(1f);
		float h = m_tv.getHeight();
		float w = m_tv.getWidth();
		float x = m_tv.getX();
		float y = m_tv.getY();

		m_tv.setX(w);
		m_tv.setY(h);

		ViewGroup layout = (ViewGroup) m_tv.getParent();
		layout.setClipChildren(true);

		// Go to 50 on x
		ViewPropertyAnimator vpa = m_tv.animate();
		vpa.x(x);
		vpa.y(y);

		vpa.setDuration(5000); // 2 secs
		vpa.setInterpolator(new AccelerateDecelerateInterpolator());
		// vpa.start();
	}

	public void testTypeEvaluator(View v) {
		m_tv.setAlpha(1f);

		float h = m_tv.getHeight();
		float w = m_tv.getWidth();
		float x = m_tv.getX();
		float y = m_tv.getY();

		ObjectAnimator tea = ObjectAnimator.ofObject(m_atv, "point",
				new MyPointEvaluator(), new PointF(w, h), new PointF(x, y));
		tea.setDuration(5000);
		tea.start();

	}

	public void testKeyFrames(View v) {
		m_tv.setAlpha(1f);

		float h = m_tv.getHeight();
		float w = m_tv.getWidth();
		float x = m_tv.getX();
		float y = m_tv.getY();

		// Start frame : 0.2
		// alpha: 0.8
		Keyframe kf0 = Keyframe.ofFloat(0.2f, 0.8f);

		// Middle frame: 0.5
		// alpha: 0.2
		Keyframe kf1 = Keyframe.ofFloat(.5f, 0.2f);

		// end frame: 0.8
		// alpha: 0.8
		Keyframe kf2 = Keyframe.ofFloat(0.8f, 0.8f);
		PropertyValuesHolder pvhAlpha = PropertyValuesHolder.ofKeyframe(
				"alpha", kf0, kf1, kf2);

		PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("x", w, x);

		// end frame
		ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(m_tv,
				pvhAlpha, pvhX);
		anim.setDuration(5000);
		anim.start();
	}
}