android开发滑动srcollerview右下角按钮根据手势显示和隐藏动画简单动画效果

最近由于项目需要需要做个简单的动画效果

关于在srcollerview滑动时右下角按钮会跟随手势进行右侧缩进隐藏，在停止滑动时在滑动至原位置显示的简单动画效果，

下面是完整代码

MainActivity.java文件

package cn.com.dh;

import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.ScrollView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
private ImageView imageView;

private ScrollView scrollView;

private static final String TAG = "MainActivity";

private boolean isSroll = true;


@Override

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

imageView = (ImageView) findViewById(R.id.img);

scrollView = (ScrollView) findViewById(R.id.sroll);

scrollView.setOnTouchListener(new View.OnTouchListener() {
@Override

public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_UP:
Toast.makeText(MainActivity.this, "停止", Toast.LENGTH_SHORT).show();

Log.e(TAG, "onTouch: " + "停止滑动");

ObjectAnimator objectAnimator1 = ObjectAnimator.ofFloat(imageView, "translationX", 300f, 0f).setDuration(1000);

objectAnimator1.start();

isSroll = true;

break;

case MotionEvent.ACTION_MOVE:
if (isSroll) {
Toast.makeText(MainActivity.this, "滑动", Toast.LENGTH_SHORT).show();

Log.e(TAG, "onTouch: " + "正在滑动");

ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 0f, 300f).setDuration(1000);

objectAnimator.start();

isSroll = false;

break;

}
break;

}
return false;

}
});

}
public void btn_click_1(View view) {
Toast.makeText(MainActivity.this, "消失", Toast.LENGTH_SHORT).show();

ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 0f, 300f).setDuration(1000);

objectAnimator.start();

//imageView.setVisibility(View.GONE);

objectAnimator.addListener(new Animator.AnimatorListener() {
@Override

public void onAnimationStart(Animator animation) {
}
@Override

public void onAnimationEnd(Animator animation) {
imageView.setVisibility(View.GONE);

}
@Override

public void onAnimationCancel(Animator animation) {
}
@Override

public void onAnimationRepeat(Animator animation) {
imageView.setVisibility(View.GONE);

}
});

}
public void btn_click_2(View view) {
imageView.setVisibility(View.VISIBLE);

Toast.makeText(MainActivity.this, "显示", Toast.LENGTH_SHORT).show();

ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageView, "translationX", 300f, 0f).setDuration(1000);

objectAnimator.start();

}
}

xml文件就是一个简单的srcollerview。

菜鸟一枚，不喜勿愤。

最后

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