package com.mcxtzhang.animdemo.ui;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.ScaleAnimation;
import android.widget.ImageView;
import com.mcxtzhang.animdemo.R;
public class WaterWaveActivity extends AppCompatActivity {
private ImageView mNormal, mWave1, mWave2, mWave3;
private AnimationSet mAnimationSet1, mAnimationSet2, mAnimationSet3;
private static final int OFFSET = 600; //每个动画的播放时间间隔
private static final int MSG_WAVE2_ANIMATION = 2;
private static final int MSG_WAVE3_ANIMATION = 3;
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_WAVE2_ANIMATION:
mWave2.startAnimation(mAnimationSet2);
break;
case MSG_WAVE3_ANIMATION:
mWave3.startAnimation(mAnimationSet3);
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_water_wave);
mNormal = (ImageView) findViewById(R.id.normal);
mWave1 = (ImageView) findViewById(R.id.wave1);
mWave2 = (ImageView) findViewById(R.id.wave2);
mWave3 = (ImageView) findViewById(R.id.wave3);
mAnimationSet1 = initAnimationSet();
mAnimationSet2 = initAnimationSet();
mAnimationSet3 = initAnimationSet();
mNormal.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
showWaveAnimation();
break;
case MotionEvent.ACTION_UP:
clearWaveAnimation();
break;
case MotionEvent.ACTION_CANCEL:
clearWaveAnimation();
}
return true;
}
});
}
private AnimationSet initAnimationSet() {
AnimationSet as = new AnimationSet(true);
ScaleAnimation sa = new ScaleAnimation(1f, 2.3f, 1f, 2.3f,
ScaleAnimation.RELATIVE_TO_SELF, 0.5f,
ScaleAnimation.RELATIVE_TO_SELF, 0.5f);
sa.setDuration(OFFSET * 3);
sa.setRepeatCount(Animation.INFINITE);// 设置循环
AlphaAnimation aa = new AlphaAnimation(1, 0.1f);
aa.setDuration(OFFSET * 3);
aa.setRepeatCount(Animation.INFINITE);//设置循环
as.addAnimation(sa);
as.addAnimation(aa);
return as;
}
private void showWaveAnimation() {
mWave1.startAnimation(mAnimationSet1);
mHandler.sendEmptyMessageDelayed(MSG_WAVE2_ANIMATION, OFFSET);
mHandler.sendEmptyMessageDelayed(MSG_WAVE3_ANIMATION, OFFSET * 2);
}
private void clearWaveAnimation() {
mWave1.clearAnimation();
mWave2.clearAnimation();
mWave3.clearAnimation();
}
}